Digital Commons Network^™

A Wedge Impact Theory Used To Predict Bow Slamming Forces, Ashok Benjamin Basil Attumaly

LSU New Orleans Theses and Dissertations

The pressures and impact forces acting on a hull while experiencing bow wave slamming is analyzed using Vorus' Impact Theory. The theory extends the hydrodynamic analysis of planing hulls from simple wedges to irregular shapes using a Boundary Element Method. A Fortran-based code developed by the Author is used to analyze hullforms. Linear strip theory is used to extend the analysis over a three dimensional hull. Post-processing of output data gives hull pressure distributions at different time steps and is visually presentable.

Impact pressure, Impact force, Planing, Wave slamming, Bow impact, Vorus' theory, Boundary Element Method, Linear strip theory

Predicting Voltage Abnormality Using Power System Dynamics, Nagendrakumar Beeravolu

LSU New Orleans Theses and Dissertations

The purpose of this dissertation is to analyze dynamic behavior of a stressed power system and to correlate the dynamic responses to a near future system voltage abnormality. It is postulated that the dynamic response of a stressed power system in a short period of time-in seconds-contains sufficient information that will allow prediction of voltage abnormality in future time-in minutes. The PSSE dynamics simulator is used to study the dynamics of the IEEE 39 Bus equivalent test system. To correlate dynamic behavior to system voltage abnormality, this research utilizes two different pattern recognition methods one being algorithmic method known as …

Hurricane-Exposed Youth And Psychological Distress: An Examination Of The Role Of Social Support, Donice M. Banks

LSU New Orleans Theses and Dissertations

Hurricane exposure places youth at risk for psychological distress such as symptoms of Posttraumatic Stress Disorder (PTSD), anxiety, and depression, while social support may contribute to resilience following disasters. This study examined associations among family and peer social support, level of hurricane exposure, and psychological distress using both a large single-time assessment sample (N = 1098) and a longitudinal sample followed over a six-month period (n = 192). Higher levels of hurricane exposure were related to lower levels of social support from family and peers as well as to higher levels of psychological distress. Higher levels of family …

A Nonlinear Ship Wave Solution Method, Li Chen

LSU New Orleans Theses and Dissertations

No abstract provided.

Rocket Motor Diagnostics Using Tunable Diode Laser Spectroscopy For Chemically Non-Reacting Air/Water Vapor Mixture In Internal Flow, Wesley Carleton

LSU New Orleans Theses and Dissertations

This research is for the implementation of non-intrusive measurement techniques in the study of high temperature pipe flow. A low pressure, laboratory scale hybrid rocket motor simulator was built to achieve high temperatures with various gases. A quartz test section was designed, built, and implemented into the existing test setup to accommodate the laser beam of the existing Tunable Diode Laser Absorption Spectrometer (TDLAS) system which was designed to observe water vapor. A super-heated water vapor injector was designed to obtain the desired water vapor concentrations. Flow characteristics were simultaneously recorded using the existing TDLAS system and the DAQ system …

Coupling Of The Hpa And Hpg Axes, Andrew Dismukes

LSU New Orleans Theses and Dissertations

The Hypothalamic-Pituitary-Adrenal (HPA) and –Gonadal (HPG) axes have been considered mutually inhibitory; however, emerging evidence supports the proposition that this might not necessarily be the case. This idea is termed “coupling,” in which the HPA-HPG axis are mutually activated or deactivated. Coupling is examined across three data sets with different time-courses of stress exposure, and results demonstrate HPA-HPG co-activation occurs. Furthermore, stress exposure influences this relationship. The discussion shows how it is physiologically possible to have positive coupling or co-activation between these axes according to complex regulatory feedback systems and overlapping neural structures. Findings are interpreted developmentally, because adolescence may …

The Association Between Hostile Attribution Bias, Social Intelligence, And Relational Aggression In Detained Boys, Gregory M. Fassnacht

LSU New Orleans Theses and Dissertations

Research on factors that contribute to the forms and functions of aggression (reactive, proactive, relational, and overt) is important for informing intervention efforts with aggressive youth. Previous research shows that aggressive youth often have cognitive and social deficits associated with their aggressive behavior. For example, aggressive youth may exhibit deficits in social variables such as social intelligence (i.e., the understanding of behaviors of people and ability to predict outcomes of situations). Hypothetically, this lack of social intelligence may be related to how youth interpret social situations, and could conceivably lead to hostile attributional bias, or the tendency to interpret ambiguous …

High Resolution X-Ray Diffraction Analysis Of Cb1 Receptor Antagonists As A Means To Explore Binding Affinity, Steven P. Fournet

LSU New Orleans Theses and Dissertations

Abstract

Charge density studies have been conducted on ten CB₁ cannabinoid receptor antagonists via high resolution x-ray crystallography. Bond critical point values and various other properties derived from these studies including the electrostatic potential were analyzed in correlation to the affinity of each compound with the CB₁ receptor. Correlation/anti-correlation was found between several properties and K_i. The data was also interpreted by principal component analysis with three principal components accounting for 85% of the data variation. Data mining was limit due to the low sample count and the requirements set for the inclusion of correlated/anti-correlated variables …

Assessing Risk In Adolescent Offenders: A Comparison Of Risk Profiles Versus Summed Risk Factors, Katherine A. Gottlieb

LSU New Orleans Theses and Dissertations

Research supports interventions for high-risk juvenile offenders to reduce recidivism. Methods for assessing delinquent risk vary, however. Aggregate risk scores (i.e. number of risk factors) and specific risk profiles (i.e. types of risk factors) are both empirically supported techniques. This study compared aggregate scores versus profiles for predicting measures of criminal severity among detained adolescents (n=292). Twenty-four risk factors from the Structured Assessment of Violence Risk in Youth (SAVRY) were summed to calculate aggregate scores. Using latent class analysis (LCA), profiles were identified based on scores from the following theoretically important SAVRY risk factors: Risk Taking/Impulsivity, Anger Management …

Anxiety Sensitivity And Its Association With Parenting Behaviors, Rebecca Graham

LSU New Orleans Theses and Dissertations

The aim of this study was to examine the association between parent and child anxiety sensitivity in the context of parenting behaviors, specifically by testing parenting behaviors as moderators or mediators of the association between parent and child anxiety sensitivity. Past research implies that parent anxiety sensitivity may be more related to child anxiety sensitivity (moderation) in girls and in the context of certain parenting. Alternatively, parenting behaviors may better account for the association (mediate) between parent and child anxiety sensitivity. To test the hypotheses 191 families (n = 255 youth aged 6-17 and their parents) completed measures of …

Special Education Co-Teachers' Perceptions: Collaboration, Involvement In Instruction, And Satisfaction, Eden Hagelman

LSU New Orleans Theses and Dissertations

Co-teaching is an approach that is frequently used by schools when students both with and without disabilities are taught in an inclusive classroom. With co-teaching, a general education teacher and a special education teacher share the responsibility of planning and teaching students. This study examined the perceptions of elementary special education co-teachers (n=81) regarding their collaboration with the general educator and their involvement in instruction in the inclusive classroom. In addition, the special education teachers' satisfaction with the co-teaching assignment was investigated. Findings showed that special education co-teachers shared an average of 30 minutes of co-planning a week, teachers who …

Hostile Attributional Bias In Aggression And Anxiety: The Role Of Perceived Provocateur Motivation, Melissa M. Kunimatsu

LSU New Orleans Theses and Dissertations

Although internalizing and externalizing problems are often considered in isolation from one another, the frequently co-occur in individuals leading to unique behavior profiles. The current study examined the associations between the forms, functions, and subtypes of aggression, anxiety, hostile attributional bias (HAB), and perceived (proactive or reactive) provocateur motivation in a sample of youth (mean age = 13.84 years, 51% male, 37.5% Caucasian). Results indicated that only reactive relational aggression significantly predicted anxiety, while relational and reactive aggression did not. HAB was not significantly associated with either anxiety or any type of aggression. Perceived proactive provocateur motivation was significantly associated …

Sistas On The Move: An Ethnographic Case Study Of Health And Friendship In Urban Space Among Black Women In New Orleans, Valerie A. Mcmillan

LSU New Orleans Theses and Dissertations

Abstract

Black women are disproportionately affected by adverse health conditions, such as obesity and heart disease. For example, more black women currently die from complications associated with diabetes, obesity and high blood pressure than any other ethnic group in the United States (Gourdine 2011). There are however, increasing numbers of everyday black women who defy these statistics and are positive role models for all women. One such group of women is the New Orleans chapter of Sistas On The Move (SOTM), an all-female running group that emphasizes the importance of black women’s health and builds community around physical activity. Through …

Knights, Dudes, And Shadow Steeds: Late Victorian Culture And The Early Cycling Clubs Of New Orleans, 1881-1891, Lacar E. Musgrove

LSU New Orleans Theses and Dissertations

In the 1880s, two cycling clubs formed in New Orleans—the New Orleans Bicycle Club in 1881 and the Louisiana Cycling Club in 1887. These clubs were institutions of Victorian middle class culture that, like other athletic clubs, arose from the conditions of urban modernity and Victorian class anxieties. The NOBC, like other American cycling clubs, conformed to Victorian values of order and respectability. The attitudes and activities of the LCC, whose membership was younger, reflected instead a counter-Victorian ethos. This paper examines these two clubs in the context of late Victorian culture in New Orleans as it responded both to …

Wastewater Disinfection In Enclosed Recirculation Systems With Electromagnetic Waves, Luis G. Mosquera

LSU New Orleans Theses and Dissertations

Finding the most cost-effective and environmental friendly way to treat and disinfect wastewater has been raising concerns around the world. Failure in performing disinfection of wastewater before returning it to the environment could have terrible consequences to human health and the ecosystem. The risks associated to continue with current practices have led to the creation of stringent regulations.

In this research the HYDROPATH technology is tested while attaching a HydroFlow 60i unit to a reactor that works as a closed recirculation system. To determine the feasibility of the HydroFlow 60i unit as an alternative method to chlorine, the EPA method …

Analysis Of Investment Strategies: A New Look At Investment Returns, Jose F. Rubio

LSU New Orleans Theses and Dissertations

Chapter 1:

Intuition suggests that constraint investment strategies will result in losses due to a limited portfolio allocation. Yet prior research has shown that this is not the case for a particular set of constraint mutual funds so-called Socially Responsible Investing, SRI. In this paper I show that such assets do face loses to portfolio efficiency due to their limited asset universe. I contribute to the literature by employing two techniques to estimate asset performance. First, I estimate a DEA based efficiency score that allows for direct comparison between ex-post efficiency rankings and test the ex-ante relevance of such scores …

Am800, James Madison Roe

LSU New Orleans Theses and Dissertations

In this paper, I will detail the film making techniques that my crew and I employed while making AM800, my thesis film at the University of New Orleans. I will detail the creative and technical steps we took, from the earliest stages of idea conceptualization to the final phases of post-production and screening. During my recounting of this process, I will discuss our creative goals, the challenges that we faced while achieving these goals, and the resulting product's effectiveness as a narrative short film. The quality of the final product will be gauged through the results of test screenings …

The Runners Of Shawnee Road, Melissa Remark

LSU New Orleans Theses and Dissertations

No abstract provided.

Experimental Investigation Of Mist Film Cooling And Feasibility Study Of Mist Transport In Gas Turbines, Reda M. Ragab

LSU New Orleans Theses and Dissertations

In the modern advanced gas turbines, the turbine inlet temperature may exceed 1500°C as a requirement to increase power output and thermal efficiency. Therefore, it is imperative that the blades and vanes are cooled so they can withstand these extreme temperatures. Film cooling is a cooling technique widely used in high-performance gas turbines. However, the film cooling effectiveness has almost reached plateau, resulting in a bottleneck for continuous improvement of gas turbines' efficiency.

In this study, an innovative cooling scheme, mist film cooling is investigated through experiments. A small amount of tiny water droplets with an average diameter about 10-15 …

A Study On The Integration Of A Novel Absorption Chiller Into A Microscale Combined Cooling, Heating, And Power (Micro-Cchp) System, Scott J. Richard

LSU New Orleans Theses and Dissertations

This study explores the application of micro-CCHP systems that utilize a 30 kW gas microturbine and an absorption chiller. Engineering Equation Solver (EES) is used to model a novel single-effect and double-effect water-lithium bromide absorption chiller that integrates the heat recovery unit and cooling tower of a conventional CCHP system into the chiller’s design, reducing the cost and footprint of the system. The results of the EES model are used to perform heat and material balances for the micro-CCHP systems employing the novel integrated chillers, and energy budgets for these systems are developed. While the thermal performance of existing CCHP …

Last Known Tomorrow, Larry J. Wormington

LSU New Orleans Theses and Dissertations

N/A

Missing Persons, Ho-Kyung Whang

LSU New Orleans Theses and Dissertations

No abstract provided.

A Numerical Study Of High Temperature And High Velocity Gaseous Hydrogen Flow In A Cooling Channel Of A Ntr Core, Sajan B. Singh

LSU New Orleans Theses and Dissertations

Two mathematical models (a one and a three-dimensional) were adopted to study, numerically, the thermal hydrodynamic behavior of flow inside a single cooling channel of a Nuclear Thermal Rocket (NTR) engine. The first model assumes the flow in the cooling channel to be one-dimensional, unsteady, compressible, turbulent, and subsonic. The working fluid (GH₂) is assumed to be compressible. The governing equations of the 1-D model are discretized using a second order accurate finite difference scheme. Also, a commercial CFD code is used to study the same problem. Numerical experiments, using both codes, simulated the flow and heat transfer …

Fraser Fir, Josie A. Scanlan

LSU New Orleans Theses and Dissertations

No abstract provided.

Stories From A Golden State, Sara R. Paul

LSU New Orleans Theses and Dissertations

No abstract provided.

4d Evolution Of Fluvial System And Channel-Fill Architecture Of The Cretaceous Blackhawk Formation, Wasatch Plateau, Utah: An Integrated Fluvial Rock Record Analysis, Hiranya Sahoo

LSU New Orleans Theses and Dissertations

Using an integrated dataset comprising outcrop, core, GPR and LiDAR data, this study targets a high-quality outcrop "window" of the upper Cretaceous Blackhawk Formation in the eastern Wasatch Plateau in central Utah, spanning a fairly large spatial (~30 km² area comprising eight contiguous, and vertical cliff faces) and temporal (~4 my) range. This research provides field-validation and -calibration of a wider range of fluvial heterogeneity: 1) large-scale heterogeneity (10’s of m vertically and 100’s of m laterally), 2) intermediate-scale heterogeneity (1’s of m vertically and 10’s of m laterally), and 3) small-scale heterogeneity (10’s of cm vertically and 1’s …

Philosophy And Counseling: A Case Study, Matthew Wegmann

LSU New Orleans Theses and Dissertations

Philosophical tenets have been at the heart of the counseling process since its inception. This study explores the factors present within a graduate-level counseling class that directly teaches these philosophical foundations through an exploration of dialectics and its impact on the medium of conversation. Interviews were conducted with both the professor that created the class as well as its current instructor along with focus groups of both current program students and program alumni. The fundamental aim was to understand the processes at work within the class and their influence on its students. The results suggest that by bringing the students …

Analysis Of Windows 8 Registry Artifacts, Jeremy M. Stormo

LSU New Orleans Theses and Dissertations

Microsoft’s series of Windows operating systems represents some of the most commonly encountered technologies in the field of digital forensics. It is then fair to say that Microsoft’s design decisions greatly affect forensic efforts. Because of this, it is exceptionally important for the forensics community to keep abreast of new developments in the Windows product line. With each new release, the Windows operating system may present investigators with significant new artifacts to explore. Described by some as the heart of the Windows operating system, the Windows registry has been proven to contain many of these forensically interesting artifacts. Given the …

A Generalization Of The Partition Problem In Statistics, Jie Zhou

LSU New Orleans Theses and Dissertations

In this dissertation, the problem of partitioning a set of treatments with respect to a control treatment is considered. Starting in 1950's a number of researchers have worked on this problem and have proposed alternative solutions. In Tong (1979), the authors proposed a formulation to solve this problem and hundreds of researchers and practitioners have used that formulation for the partition problem. However, Tong's formulation is somewhat rigid and misleading for the practitioners, if the distance between the ``good'' and the ``bad'' populations is large. In this case, the indifference zone gets quite large and the undesirable feature of the …

Buckling, Postbuckling And Imperfection Sensitivity Analysis Of Different Type Of Cylindrical Shells By Hui's Postbuckling Method, Hailan Xu

LSU New Orleans Theses and Dissertations

Hui and Chen (1986) were the first to show that the well-known Koiter’s General Theory of Elastic Stability of 1945 can be significantly improved by evaluating the postbuckling b coefficient at the actual applied load, rather than at the classical buckling load. Such improvement method was demonstrated to be (1) very simple to apply with no tedious algebra, (2) significant reduction in imperfection sensitivity and (3) although it is still asymptotically valid, there exists a significant extension of the range of validity involving larger imperfection amplitudes. Strictly speaking, Koiter’s theory of 1945 is valid only for vanishingly small imperfection amplitudes. …