Digital Commons Network^™

Using Archaeological Fish Remains To Determine The Native Status Of Anadromous Salmonids In The Upper Klamath Basin (Oregon, Usa) Through Mtdna And Geochemical Analysis, Alexander E. Stevenson

Dissertations and Theses

Within the Upper Klamath Basin, Oregon, the native status of anadromous salmonids (Oncorhynchus spp.) has been a long standing question. Ongoing efforts to establish if these fish were native to the region prior to the construction of the Copco I Dam on the Klamath River (c.1917) have relied on sparse, contradictory and sometimes unreliable historic documentation and informant testimony. Current restoration projects with very high financial and social costs necessitate accurate and reliable data on salmonid species which once called the region home. Often, archaeolofaunal remains present a novel way to determine species present in an area prior to …

Evolving Nano-Scale Associative Memories With Memristors, Arpita Sinha

Dissertations and Theses

Associative Memories (AMs) are essential building blocks for brain-like intelligent computing with applications in artificial vision, speech recognition, artificial intelligence, and robotics. Computations for such applications typically rely on spatial and temporal associations in the input patterns and need to be robust against noise and incomplete patterns. The conventional method for implementing AMs is through Artificial Neural Networks (ANNs). Improving the density of ANN based on conventional circuit elements poses a challenge as devices reach their physical scalability limits. Furthermore, stored information in AMs is vulnerable to destructive input signals. Novel nano-scale components, such as memristors, represent one solution to …

Development Of An Ultra-Lightweight Buckling-Restrained Brace Using Analytical And Numerical Methods, John Andrew Tinker

Dissertations and Theses

An ultra-lightweight buckling-restrained brace (ULWBRB) is developed using a highly ductile aluminum core and FRP restrainer. Utilization of lightweight materials results in a BRB that is 25% the weight of traditional mortar-filled tube varieties allowing easy installation in small to medium sized buildings requiring seismic retrofit without the need for heavy equipment. Construction utilizes commonly stocked materials able to be customized for required strength, drift, and geometry limitations. Analytical single degree of freedom (SDOF) and Euler buckling models are compared with published equations to determine the required restrainer stiffness (RRS). SDOF models yield RRS values 200% higher than the Euler …

A Functional Approach To Memory-Safe Operating Systems, Rebekah Leslie

Dissertations and Theses

Purely functional languages--with static type systems and dynamic memory management using garbage collection--are a known tool for helping programmers to reduce the number of memory errors in programs. By using such languages, we can establish correctness properties relating to memory-safety through our choice of implementation language alone. Unfortunately, the language characteristics that make purely functional languages safe also make them more difficult to apply in a low-level domain like operating systems construction. The low-level features that support the kinds of hardware manipulations required by operating systems are not typically available in memory-safe languages with garbage collection. Those that are provided …

Cultivating Environmental Stewardship In Middle School Students, Kelly Anne Fischer

Dissertations and Theses

Environmental stewardship is an important attribute for students and populations of all ages to have. This study looked at the effect of middle school students of a teacher who participated in a summer field ecology training program taking part in a long-term ecology project, and the impact of the experience on their environmental stewardship attitude. A variety of qualitative and quantitative techniques were used to look at changes in students' environmental stewardship attitudes including: surveying in a pre/post format, teacher, parent, and student focus groups, and teacher interviews. The teacher's experience with the summer field ecology training provided a foundation …

Dainty Hands: Perceptions Of Women And Crime In Sherlock Holmes Stories, Hadar Aviram

Faculty Scholarship

No abstract provided.

Exchange Rate Volatility And Bilateral Agricultural Trade Flows: The Case Of The United States And Oecd Countries, Kashi Ram Kafle

LSU Master's Theses

The abandonment of fixed exchange rate systems has caused exchange rate movements to become a major concern for traders, policy makers and researchers. During the previous four decades of floating exchange rates, numerous studies have been conducted to determine whether exchange rate volatility affected international trade flows. Researchers have not yet reached a general consensus as to the magnitude and direction of the impact of exchange rate volatility on trade flows. This study documents the effect of exchange rate volatility and real exchange rates on bilateral agricultural exports, imports and total trade flows between the United States and OECD countries. …

Sensory Discrimination Testing With Children, Karen Melissa Garcia

LSU Doctoral Dissertations

Literature concerning children’s performance in sensory discrimination methods is not as extensively published as performance with adults. Therefore, in this dissertation children’s performance in discrimination methods was investigated. First, performance in the triangle and 3-AFC methods was explored with children 6 to 12 years old. The paradox of discriminatory non-discriminators states that the proportion of correct responses in the 3-AFC method will be higher than that of the triangle. However, Thurstonian theory predicts that despite the difference in proportions of correct responses the degree of difference between the stimuli will be similar. The paradox and the Thurstonian predictions were challenged …

Discrete Element Modeling Of Cone Penetration In Jsc-1a Lunar Regolith Simulant, Mehmet Burak Cil

LSU Master's Theses

NASA plans to return back to the Moon for a long term presence and use of the Moon as a launch station for further space exploration to other planets. This scenario increases the importance of determining the geotechnical properties of the lunar surface. However, due to the limited availability of lunar regolith and its high scientific value, a simulant material which closely matches the composition and grain size distribution and other characteristics of the lunar regolith has become an indispensable need to benefit in hardware development as well as estimating lunar regolith properties. Therefore, JSC-1A lunar regolith simulant, which was …

Assessing The Suitability Of Various Feedstocks For Biomass Gasification, Akshya Sharma

LSU Master's Theses

Ten different types of feedstocks available in Louisiana were assessed for their suitability to produce SYNGAS in a down-draft biomass gasifier. The feedstocks tested for this research include: pine pellets, hardwood pellets, cypress mulch, pine bark nuggets, corn stover pellets, switchgrass pellets, sugarcane bagasse pellets, dairy manure pellets, and poultry litter pellets. The feedstocks were first analyzed for volatile & ash content, high heating value, moisture, and mass density. Feedstocks that met the analytical criteria and available in a form that is suitable for the down-draft gasifier at LSU were tested for gasification. The temperature profile within the gasifier and …

Using Curriculum-Based Measures To Predict Math Performance On A Statewide Assessment, Keri F. Menesses

LSU Doctoral Dissertations

One hundred forty-six students in third, fourth, and fifth grades completed two types of curriculum-based measurement (CBM) math probes, math computation and math concepts/ applications, in the winter and spring. The relationship between scores on the math probes and scores on the math portion of the Louisiana statewide assessments were analyzed by computing correlation coefficients and conducting multiple regression analyses. Both types of probes were significantly correlated with test outcomes, yet the concepts/applications probes were stronger predictors of test performance. The diagnostic accuracy of the probes was determined using receiver operating characteristic (ROC) curve analyses, which established cut scores that …

Learning And Teaching Conducting Through Musical And Non-Musical Skills: An Evaluation Of Orchestral Conducting Teaching Methods, Jose Mauricio Valle Brandao

LSU Doctoral Dissertations

The current state of conducting as an academic and professional pursuit shows a plethora of conventional traditions and techniques that are accepted without question, but a dearth of ideas and approaches that will develop the skills essential to producing an effective conductor. This profile is especially apparent in the field‘s literature. This monograph will compile a list of these titles and annotate each one, in order to determine the common threads that run between them. This information will be distilled into categories, identifying levels of approach and target audience. Evaluation of these data may lead to a discovery that many …

Regulation Of Gene Expression By Chromatin Boundary Elements, Richard Alton Kleinschmidt

LSU Doctoral Dissertations

Boundary elements consisting of barriers and insulators are genomic sequence elements that along with their associated DNA-binding proteins block the spread of heterochromatin into euchromatic regions or prevent the targeted activation of promoters from distal/proximal enhancers, respectively. In Saccharomyces cerevisiae, the deletion of RPD3, a histone deacetylase, results in an extended SIR protein-mediated silencing effect bypassing a tRNAthr barrier element adjacent to the cryptic mating locus, HMRa. We mutagenized rpd3Δ strains and identified suppressor mutants through a genetic screen that no longer displayed this enhanced silencing effect. Our results identified BRE1 and BRE2, which are either directly or indirectly responsible …

Using The Ambulatory Phonation Monitor To Measure The Vocal Parameters Of Older People With And Without Parkinson's Disease, Danielle Marie Boudreaux

LSU Master's Theses

Our project was designed to determine if there was a difference in vocal parameters, including mean fundamental frequency, mean amplitude, and total phonation time, between individuals diagnosed with Parkinson’s disease (PD) and age-and gender-matched individuals without a diagnosis of any neurologic or neurodegenerative diseases (NO PD) using the Ambulatory Phonation Monitor (APM: KayPENTAX, Lincoln Park, New Jersey). The APM was designed to gather objective data in a naturalistic environment by having participants wear the device over the course of three 8-hour days. The APM measured total phonation time, mean amplitude, and mean fundamental frequency throughout that time. The participants wore …

Criminal Justice Policy Research Institute Newsletter, Portland State University. Criminal Justice Policy Research Institute

Criminal Justice Policy Research Institute Newsletters

Newsletter provides information on:

• Latest research results
• Projects and studies underway
• Research awards and distinctions
• Recent research publications

Constitutional Challenges To The Health Care Mandate: Based In Politics, Not Law, David Orentlicher

Scholarly Works

No abstract provided.

Controlling Health Care Costs Through Public, Transparent Processes: The Conflict Between The Morally Right And The Socially Feasible, David Orentlicher

Scholarly Works

No abstract provided.

Can Congress Make You Buy Broccoli? And Why It Doesn’T Matter, David Orentlicher

Scholarly Works

No abstract provided.

Intravenous Injection Of Insulin For Measuring Insulin Sensitivity In Horses: Effects Of Epinephrine, Feeding Regimen, And Supplementation With Cinnamon For Fish Oil, Lisa Rosalee Earl

LSU Master's Theses

Seven experiments were performed to assess the use of glucose responses to insulin injections as a means of estimating insulin sensitivity in horses; to compare the insulin sensitivities of normal horses vs. those displaying hyperleptinemia; and to put this method into practical application. Experiment 3.1 examined dose-responses in mares of potentially different insulin sensitivities. Recombinant human insulin was injected at doses of 8, 20, 50, and 125 mU/kg BW, as needed, to estimate the dose of insulin causing a 50% decrease in glucose concentrations (ED50). Five mares each of low leptin concentrations (LL) and low BCS, LL and high BCS, …

Integrated Weather Sensor Platform And Decision Support System For Improved Sweet Potato Production, Jose Pablo Rojas Jimenez

LSU Master's Theses

Water management represents an essential component in all agricultural activities, where significant improvements can be achieved through the implementation of field measuring devices and irrigation scheduling models. The methods that integrate these tools may be based on information regarding the soil, crop, and weather. Evapotranspiration (ET) is one of the most important components of the soil water-balance used in modeling. A number of estimation methods have been developed to determine Reference Evapotranspiration (ETo) under various types of weather conditions. In this research, an analysis was conducted between different ETo estimation methods and ETo calculated from soil water content measurements and …

Simulated Subaverage Performance On The Block Span Task Of The Stanford-Binet Intelligence Scales-Fifth Edition, Alyse Ann Barker

LSU Master's Theses

As clinical psychologists and neuropsychologists routinely assess individuals in medicolegal and criminal forensic settings, they are faced with the challenge of evaluating and testifying on the validity of these psychological and neuropsychological assessments. Individuals possess various motives for manipulating their responses or performance on psychological and neuropsychological assessment instruments. Malingering refers to poor effort on psychological and neuropsychological tests when an external incentive is present to reward poor performance. Malingering can be assessed by stand-alone measures of effort or measures derived from the response profiles of traditionally administered neuropsychological and psychological tests. Using a dataset from the Stanford-Binet Intelligence Scales-Fifth …

The Creation Of "Echolalia: A Conversation" A Production Thesis In Acting, Olga Michele Guidry

LSU Master's Theses

This thesis, submitted to the Graduate School of Louisiana State University as partial requirement for graduation with the Master of Fine Arts degree in Theatre, follows the creation of a solo performance piece by Michele Guidry, called “Echolalia: A Conversation.” This solo project is an exploration of communication through the experience of autism from the perspective of parents, siblings, and therapists of children with autism, and the children themselves. The thesis includes topics of inspiration for creating this solo performance piece, interviews with experts and theatre artists who have personal experience with autism, a copy of the script with explanation …

Implementing Lean In Healthcare Warehouse Operations - Evaluation Of 5s Best Practice, Sanjith Venkateswaran

LSU Master's Theses

Lean strategies in healthcare aim at improving patient throughput, reducing medication errors, redesigning work flow, improving patient safety, and reducing cycle time. Documented studies to improve healthcare’s warehouse operation are not common in the literature. Managing types of medical supplies has always been a priority due to demand uncertainties and the risk of shortages that would profoundly affect patient safety. This study showcases two implementation approaches for the Lean tool 5S (Hybrid and Traditional) conducted in three different hospitals’ central warehouses at Ochsner Health System. These warehouses store similar medical products with over 1000 types of supplies (e.g. syringes, gloves, …

Neutralizing Gender: Autonomy's Role In Disarming Gender Bias, Scott Szymanski

LSU Master's Theses

Figuring out what one’s identity means has always been an essential task of human life. Decidedly, our values, commitments, aspirations, and experiences all contribute to this identity. I submit that individuals have control over who they are and what they become by way of these attributes. As such, control over these characteristics gives us the power to define ourselves as we wish. In my thesis, I attempt to express how autonomy is imperative for this control. I take issue with traditional notions of autonomy, concluding that they do not take into account all that is necessary to ensure a person …

Can Transportation Researchers Reuse Project Datasets And Programs?, Tyler Hayes, Lois Delcambre, Leonard Shapiro

Computer Science Faculty Publications and Presentations

Data users involved in research and analysis typically invest a lot of eort cleaning and manipu- lating their data as they work. Based on this observation, we have investigated two hypotheses: 1) reuse of datasets and procedures is difficult, and 2) the inability to reuse datasets and procedures is primarily due to a lack of documentation. To test these hypotheses we conducted structured interviews with data users asking questions regarding the struggles in their work pertaining to data, their documentation habits, and the importance of documentation. The interviews revealed that the data users rarely reused data or procedures, frequently encountered …

Cardiac Surgery: A Century Of Progress, Allen B Weisse

The Texas Heart Institute Journal

Well into the first decades of the 20th century, medical opinion held that any surgical attempts to treat heart disease were not only misguided, but unethical. Despite such reservations, innovative surgeons showed that heart wounds could be successfully repaired. Then, extracardiac procedures were performed to correct patent ductus arteriosus, coarctation of the aorta, and tetralogy of Fallot. Direct surgery on the heart was accomplished with closed commissurotomy for mitral stenosis. The introduction of the heart-lung machine and cardiopulmonary bypass enabled the surgical treatment of other congenital and acquired heart diseases. Advances in aortic surgery paralleled these successes. The development of …

Interposition Grafting Of Large Extracranial Carotid Aneurysm, Marlous Huyzer, Michel M P J Reijnen, Johannes E M Sybrandy, Jacob Buth, Clark J Zeebregts

The Texas Heart Institute Journal

Extracranial carotid aneurysms are a rare entity and carry an inherent risk of thromboembolic complications. Treatment options consist of endovascular and conventional surgical techniques. We describe the cases of 3 patients who were treated with an interposition graft for a large extracranial carotid aneurysm.

The patients had presented with an extracranial carotid aneurysm with a diameter of 30 to 43 mm. In all cases, the aneurysm was excluded by means of an interposition graft, without major perioperative complications. There was 1 case of temporary paresis of the facial nerve and another of temporary paresis of the vocal cord. After a …

An Investigation On Fast And Frugal Model For New Project Screening, Antonie J. Jetter, Fatima M. Albar

Engineering and Technology Management Faculty Publications and Presentations

Research in psychology is increasingly interested in decision-makers' use of heuristics or rules of thumb because they have accuracies close to more complex decision rules and seem particularly useful in difficult decision-making contexts when uncertainty is high and speed is of the essence. One particularly difficult decision setting is the fuzzy front-end of new product development because a large number of product ideas need to be screened to identify the few that should be developed further. This process is currently poorly supported through decision tools and mainly occurs on the basis of managerial “gut-feel”. This study explores managerial “gut-feel” by …

Growing Up Policed In The Age Of Aggressive Policing Policies, Brett G. Stoudt, Michelle Fine, Madeline Fox

Publications and Research

Spray-painted atop an old tenement building in the East Village of Manhattan is a large fossilized graffiti image of a tyrannosaurus rex that reads: “NYC EATS ITS YOUNG.” With its ribs exposed and mouth open, this image represents symbolically what many young people in the neighborhood already know intimately and have experienced: New York City (NYC) is not an easy place to grow up. Their social safety nets are being dismantled and the public institutions they rely on every day often fail them. In NYC, public school budgets are being slashed each year even though the high school dropout/push-out rates …

Working Memory In Simultaneous Interpreters: Effects Of Task And Age, Teresa Signorelli, Henk Haarmann, Loraine Obler

Publications and Research

This study examines whether interpreters have better working memory (WM) than noninterpreters, taking into account different WM components and the potential modulatory influence of age. Younger and older interpreters and non-interpreters were tested on reading span, nonword repetition, and order- and category-cued recall, using English, second-language materials. Articulation rate was also assessed. Interpreters outperformed non-interpreters in reading span and nonword repetition, but not cued recall and articulation rate. These results suggest that interpreters have better ability to manipulate information in working memory and process or store sub-lexical phonological representations, but have no advantage in short-term retention of words and their …