Digital Commons Network^™

1, 2-Bis (Phenylsulfonyl)-1h-Indole As An Acceptor Of Organocuprate Nucleophiles, David C. Qian, Philip E. Alford, Tara L. S. Kishbaugh, Sean T. Jones, Gordon W. Gribble

Dartmouth Scholarship

1,2-Bis(phenylsulfonyl)-1H-indole is a novel example of an electron-deficient indole that undergoes nucleophilic attack at C-3. Though a variety of other organometallic nucleophiles fail to engender nucleophilic substitution, organocuprates produce 3-substituted 2-(phenylsulfonyl)-1H-indoles. These reactions contribute to the growing number of examples of nucleophilic addition to the indole core.

An Improved Synthesis Of A Ring-C Precursor To Cobyric Acid, Hui Wang, Peter A. Jacobi

Dartmouth Scholarship

Alkyne acid 10 was prepared in enantioselective fashion from allylic ester derivative (R)-18 via an E-selective Ireland-Claisen rearrangement followed by Si-assisted elimination of HBr. The present route offers significant advantages in terms of both scalability and overall yield compared to that previously described. Alkyne acid 10 is an attractive ring-C precursor for an ongoing synthesis of cobyric acid.

Sticky Points In Modeling Household Energy Consumption, Loren Lutzenhiser, Mithra Moezzi, David Hungerford, Rafael Friedmann

Center for Urban Studies Publications and Reports

A variety of approaches have been proposed to explaining individual household energy consumption, its variation, and its potential reduction. Some focus on technology, some on costs, and some on a combination of behaviors, attitudes, intentions, and norms. All try to make sense of a problem that, from a modeling perspective, involves hundreds of potentially important factors, yet is supported by highly inadequate or at best selective data. While there is value in "doing the best one can" with the resources at hand, building a defensible science requires a cold hard look at the quality of theory, research and data. This …

What Drives Academic Bioscientists: Money Or Values?, David E. Ervin, Sharmistha Nag, Hui Yang, Steven T. Buccola

Economics Faculty Publications and Presentations

The article determines the factors that drive academic bioscience to better understand the role of genetically engineered (GE) crops in the sustainability of U.S. agriculture. Some challenges brought about by GE crops in the U.S. farm sustainability include tracking and controlling water pollution, protecting against herbicide resistance and nitrogen fixation. Professional norms are also considered as a great factor driving the academic bioscience.

Optimum Land Allocation For Species Protection And Military Training On Dod Installations, Sahan T.M. Dissanayake, Hayri Önal, James D. Westervelt, Harold E. Balbach

Economics Faculty Publications and Presentations

Poster

Bisped: Filling A Critical Shortage Area, Julie Esparza Brown, Bruce A. Miller

Education Faculty Publications and Presentations

This article is # 18 in a larger 140 page work described here: The monograph showcases professional development projects by school districts and colleges of education that train teachers to work successfully with English learners (ELs) across the nation. The papers presented in this monograph offer real-life examples of successful and innovative practices, including institutionalized mentoring programs, new classroom methodologies, best practices for ELs with disabilities, collaboration between colleges of education and school districts, and the evaluation of PD programs. This monograph contains the following articles: (1) Professional Development in Action: Introduction; (2) The National Professional Development Program (Cynthia Ryan …

Seventh-Grade Curriculum In Probability (A Guide For Teachers), David Nganga Njenga

LSU Master's Theses

A review of the literature indicates that teachers try to make connections between experimental and theoretical probabilities while teaching their students, but these connections are often not very clear. This greatly increases misconceptions students have about probability. This thesis presents a treatment of teaching probability that is geared for seventh grade and intended to minimize the misconceptions that both teachers and students may have. We present a concise mathematical exposition of finite probability models as well as collection of examples and activities, so as to help teachers and students organize their thinking and minimize misconceptions. The various examples and activities …

Prototype Electron Phantom For Radiographic And Radiochromic Film Dosimetry, Chad Joseph Robertson

LSU Master's Theses

Robertson, Chad Joseph, B.S. Louisiana Tech University, 2006 Master of Science, Spring Commencement, 2006 Major: Medical Physics and Health Physics Prototype Electron Phantom for Radiographic and Radiochromic Film Dosimetry Thesis directed by Professor Kenneth R. Hogstrom Pages in thesis, 133. Words in abstract, 350 ABSTRACT Purpose: The purpose of this work is to develop a solid electron beam film phantom for use with radiographic film (RGF) and radiochromic film (RCF) to measure relative dose distributions in a principal plane containing the central axis for 6¨C20MeV electron beams. It was hypothesized that relative dose distributions measured using film will agree with …

Attitudes Of Northwest Ohio Uaw Locals Regarding Lifelong Learning, Use Of Online Strategies, And Union-Led Learning, David P. Heiser

All-Inclusive List of Electronic Theses and Dissertations

United States workers are facing a workplace in which globalization, outsourcing, accelerating technology innovation, and changing demographics demands changes in the way they keep their job skills current. As a primary representative of workers' interests in the workplace, unions want their members to acquire and improve the skills, knowledge, and qualifications that enhance their employability and increase autonomy and self esteem. The problem was to identify the attitudes of two Northwest Ohio UAW locals regarding participation in lifelong learning, and utilization of online learning strategies within a union environment. The study was a quantitative descriptive study that utilized cross sectional …

Comparing The Perceived Relevance Of Informal And Formal Learning In Skill Acquisition In A Leadership Development Program, William Kirk Smith

All-Inclusive List of Electronic Theses and Dissertations

Leadership development is at or near the top in importance to senior executives within organizations. In the criteria for the Malcolm Baldridge National Quality Award, leadership has the second highest weighting, behind only business results but ahead of customer focus, measurement, analysis, knowledge management, workforce focus, process management, and strategic planning. Corporations in the United States spend an estimated $20-30 billion per year in leadership training and there is a question of whether the learning that takes place outside the classroom, informal learning, is more relevant than formal learning. Learning within organizations is vital to success. It is the lifeblood …

Elliptic Curves And Cryptography, Senorina Ramos Vazquez

Master's Theses

In this expository thesis we study elliptic curves and their role in cryptography. In doing so we examine an intersection of linear algebra, abstract algebra, number theory, and algebraic geometry, all of which combined provide the necessary background. First we present background information on rings, fields, groups, group actions, and linear algebra. Then we delve into the structure and classification of finite fields as well as construction of finite fields and computation in finite fields. We next explore logarithms in finite fields and introduce the Diffie-Hellman key exchange system. Subsequently, we take a look at the projective and affine planes …

Microelectromechanical Systems Coulter Counter For Cell Monitoring And Counting, James D. Benson, Yifan Wu, John K. Critser, Mahmoud Almasri

Faculty Articles, Papers, and Other Scholarship

This note describes the design, fabrication, and testing of a novel microelectromechanical systems Coulter counter. The Coulter counter will be used to detect and monitor impedance changes of cells as a function of time in response to different experimental extracellular environments. The device consists of SU-8 (negative photoresist ) microchannels, vertical electroplated electrodes, polydimethylsiloxane cover, and is divided into a passive mixing region, a focusing region using negative dielectrophoretic forces, and a measuring region defined by multiple electroplated electrode pairs. The devices were tested using both microbeads in saline water and fibroblast cells in phosphate buffered saline solution. The results …

Determination Of The Economic Optimal Cycle Length For Major Sugarcane (Saccharum Spp.) Varieties In Louisiana, Juan Steer Nunes

LSU Master's Theses

The general objective of the study was to determine the economically optimal crop cycle length for major sugarcane varieties currently being produced in Louisiana. The specific objectives of the project included the specification of the mathematical acreage relationships which directly impact the production of a vegetatively propagated perennial crop in a whole farm context; the development of producer decision rules to be used to determine breakeven sugar levels on third stubble sugarcane crops for major varieties in the state; the evaluation of the impact of changes in production factors on developed crop replacement rules; and the optimal cycle length for …

Volcanological And Petrogenetic Characteristics Of Komatiites Of The 3.3 Ga Saw Mill Complex, Weltevreden Formation, Barberton Greenstone Belt, South Africa, Matthew Stephen Huber

LSU Master's Theses

The Saw Mill Complex (SMC) is a 1275 m thick layered komatiitic sequence in the 3.3 Ga Weltevreden Formation, uppermost stratigraphic unit of the Onverwacht Group in the northern part of the Barberton Greenstone Belt, South Africa. A series of ultramafic complexes in the Weltevreden Formation have been interpreted as layered ultramafic intrusions, consisting of thick, layered ultramafic units of peridotite, pyroxenite, dunite, and gabbro. However, recent work on the Pioneer complex of the Weltevreden Formation has demonstrated an extrusive origin of komatiites and tuffs. The Weltevreden Formation has been less studied than other Onverwacht Group units. It is likely …

An Economic Analysis Of The Costs Of Alternative Sugarcane Fallow Weed Control Programs, José Rodolfo Mite Cáceres

LSU Master's Theses

Economic research was conducted to present estimates of costs per acre associated with fallow sugarcane weed control programs for Louisiana in 2010. The 2010 projected costs are associated with the various phases of sugarcane fallow using different machinery, implements, and weed control practices followed by most growers in the main sugarcane production area of Louisiana. For bermudagrass and johnsongrass weed control treatments, the herbicides applied were Roundup Original Max at 46 oz/A, generic glyphosate at 64 oz/A, DuPont K4 60DG, Trifluralin 4EC at 4 qt/A, and EPTC at 3.5 pt/A. Purple nutsedge weed control treatments included Roundup Original Max at …

Oregon's Fish And Wildlife In A Changing Climate, Mark A. Hixon, Stanley V. Gregory, W. Douglas Robinson, C. Scott Baker, Harold P. Batchelder, Clinton Epps, Tiffany S. Garcia, Susan M. Haig, Ricardo M. Letelier, David A. Lytle, Bruce A. Menge, Jeffery C. Miller, David L.G. Noakes, William T. Peterson, James M. Rice, Steven S. Rumrill, Carl B. Schreck, Robert M. Suryan, Mark D. Sytsma, Angelicque E. White

Center for Lakes and Reservoirs Publications and Presentations

Chapter 7 in: The Oregon Climate Change Assessment Report

Oregon's fish and wildlife include animals on land, fish and other species in rivers and lakes, and various kinds of sea life in estuaries and coastal ocean. Oregon is one of the most ecologically diverse states in the country. The state’s robust biodiversity, some of which is already threatened or endangered -- inhabits complex and dynamic ecosystems that we have only begun to understand, let alone examine in terms of climate change.It is clear that the abundance and distribution of species are shifting already and will shift more rapidly as habitats …

Hydroacoustic Survey And Point Sampling Of Macrophytes In Diamond Lake 2009, Joseph Eilers, Benn Eilers, Mark D. Sytsma, Rich Miller

Center for Lakes and Reservoirs Publications and Presentations

MaxDepth Aquatics, Inc. was contracted to conduct a hydroacoustic survey of macrophyte distribution in Diamond Lake in 2009. The survey essentially repeated surveys conducted in 2002 and 2007, allowing for a detailed assessment of conditions in 2009 and comparisons among previous years. In addition, Portland State University was contracted to conduct a depth stratified random point sample survey of macrophyte species presence and absence. The point sample survey was similar to surveys conducted in 2005 and 2007. The results of the 2009 hydroacoustic survey showed that macrophytes were widely distributed throughout the lake at depths less than 8 meters, although …

The Effects Of Self-Assessment On Student Learning Of Mathematics, Daniel James Hotard

LSU Master's Theses

Self-assessment can be defined as students judging their own work, based on evidence and explicit criteria, for the purpose of improving future performance. Many researchers agree that implementation of student self-assessment in the classroom is an important tool for improving academic performance and self-efficacy. In this thesis, I investigated the effects of student self-assessment on learning gains of 81 alternative high school Algebra I students. This study took place over the course of two units of instruction. Classes were divided into two groups. One group of students utilized rubrics to self-assess their own work for the first unit, while the …

Metamorphic Rocks In The Sawtooth Mountains, Idaho, Usa: A Window Into The Precambrian Basement Of Southwest Laurentia, Kyle Michael Metz

LSU Master's Theses

The western North American craton consists of a mosaic of Precambrian basement terranes that developed through episodes of microcontinent collision and magmatic arc accretion. Defining the extent and boundaries of these terranes is critical to deciphering the Precambrian development of Laurentia. The poorly exposed Selway terrane occurs between the Archean Wyoming province and the Neoproterozoic rifted margin of Laurentia. A rare exposure of Precambrian metamorphic rocks, the Sawtooth Metamorphic Complex (SMC), crops out over 33 km2 in the Sawtooth Mountains of Idaho, USA, and potentially provides a window into the deep crust of the region. Field mapping, petrographic analyses, and …

The Effect Of War On Art: The Work Of Mark Rothko, Elizabeth Leigh Doland

LSU Master's Theses

My goal for this thesis was to adequately illustrate the effect war can have on art and artists. I chose to single out one particular artist who lived and worked during a time of war and explore his life and work. My choice of artist was not random: I chose an individual who was particularly concerned about his external environment, and was active in the political and social issues of the time. My subject is Mark Rothko, a Russian-Jewish artist who immigrated from Russia as a boy and spent his life in the hotspot of artistic inspiration, New York City. …

Effective Lesson Planning: Field Trips In The Science Curriculum, Cynthia Rau Rieger

LSU Master's Theses

Science field trips can positively impact students and motivate them into future studies in various science fields. However, if a field trip is not executed properly, it can result in a loss of valuable educational time and could promote misconceptions in the students. This study was undertaken to determine if a classroom lesson before an out-of-the-classroom activity would affect learner gain more or less than a lesson after the activity. The students were divided into two different groups. The groups differed based on the sequence of activities that they received. The activities involved in this study included visiting an immersive …

Is A Student's Conceptual Knowledge Affected By Their Vocabulary Instruction?, Daniel C. Cox

LSU Master's Theses

The following paper explores the possible relationship between the manner in which a student is taught vocabulary in a high school physics classroom and the ability of those students to correctly answer physics conceptual questions. Two high school physics classes taught by the same teacher (eight or nine students in one and seventeen in the other) received identical instruction throughout multiple units with the exception of vocabulary instruction. Differences were observed in the students’ ability to correctly answer conceptual questions in only one topic, heat. The students did not get better at answering a question concerning a phase change or …

Comprehensive Study Of Parameters For Volumetric Modulated Arc Therapy (Vmat) Treatment Planning, Catharine Elizabeth Talbert

LSU Master's Theses

Volumetric modulated arc therapy (VMAT) is a rotational IMRT technique that uses a radiotherapy linear accelerator gantry with a dynamic MLC, variable dose rate, and variable gantry speed. These new degrees of freedom of VMAT delivery introduced complexities for treatment planning, and Pinnacle3 SmartArc treatment module was recently developed as a solution. However, it was unclear how varying each SmartArc parameter affected the resulting plan quality. The purpose of this study was to systematically examine all planning parameters and quantify the effect of varying each on the quality of a reference plan. Parameters were separated into two categories: commissioning parameters …

Speciation Of Heavy Metals In Disturbed And Undisturbed Sediments From Atchafalaya Bay, Houma Navigation Canal, And Southwest Pass, Louisiana, Amanda Jo Zimmerman

LSU Master's Theses

In coastal Louisiana it is common to use dredge spoil to build marshland that has been lost due to a variety of factors. Under various conditions such as deposition in a drained oxygenated environment, metals in the spoil can become more bioavailable posing a threat to the ecosystem. This study compares metal availability in natural and dredged sediments to determine what changes occur in nature. Forty four samples from three locations, Atchafalaya Delta, Houma Navigation Canal, and Southwest Pass, were analyzed for 13 common elements with known or potentially harmful health effects; Al, As, Ba, Be, Cd, Cr, Co, Cu, …

The Adoption Of Best Management Practices In The Louisiana Crawfish Industry, Narayan P. Nyaupane

LSU Master's Theses

Agricultural production can have result in environmental deterioration in cases where proper management practices have not been implemented. Louisiana, one of the tropical states, has a significant agricultural base with more than 1,600 farmers raising crawfish. Large volumes of waste water containing environmental pollutants result significant environmental problem in the state. Voluntary adoption of a number of best management practices (BMPs) that are considered to be environmentally and economically beneficial is encouraged in Louisiana. The major objectives of this study are to investigate farmer adoption of 18 selected Natural Resources Conservation Service (NRCS) cost share eligible BMPs and the reasons …

The Effects Of Salinity On Nitrogen Cycling In Wetland Soils And Sediments Of The Breton Sound Estuary, La, Brett Whitfield Marks

LSU Master's Theses

Wetlands in the coastal zone are slowly becoming more saline under rising sea level over the long-term. However, there are a number of events in the coastal environment which lead to quick and temporary changes in the salinity of coastal marshes. Seawater driven inland from storm surge can significantly increase salinity in oligohaline wetlands over the short-term (weeks). Recent large-scale efforts to restore coastal wetlands in Louisiana have utilized Mississippi River surface water diversions to re-introduce freshwater into coastal marshes, decreasing the salinity of coastal marshes. We examined the effect of salinity changes on two important nitrogen cycling processes, potential …

University Admissions Officers' Perceptions Of Student Performance Within The International Baccalaureate Diploma Program, Emily Trabona Tarver

LSU Doctoral Dissertations

This qualitative study sought to provide a general perception of admissions offices of secondary institutions have toward the Diploma Program through a grounded theory approach. The first goal of the study investigated the nature of credit awards for a student’s high school academic performance. Specific attention was paid to the processes institutions use for determining credit awards, policies associated with credit awards, and perceptions related credit awards. The second goal investigated admissions policies, processes, and perceptions associated with credit awards and the DP specifically. Finally, the third goal sought to illustrate the development and/or changes in the perceptions and actions …

Investigating The Effectiveness Of Informal Science Education Through Quantitative And Qualitative Analysis: Ocean Commotion, Catherine Angela Sutera

LSU Master's Theses

Informal science education serves as an important source for science education for both individuals and school groups. However, the effectiveness of school visits to informal science education events outside of either museums or science centers has received little investigation. This study explores the short-term effects of a hands-on learning experience on students’ attitude and content knowledge. Specifically, it investigates the impact of Ocean Commotion, a one-day event where exhibitors present information and hands-on demonstrations about marine environments and products, especially those important to Louisiana. Pre-tests were utilized to document students’ initial knowledge of and attitude toward wetlands and the ocean, …

How Do They Cope: Teaching Students With Learning Difficulties In Mainstream Classrooms, Coralyn Dick

Theses : Honours

This study seeks to examine how teachers cope with the demands of teaching students with and without learning difficulties (LD) in mainstream classrooms. The relationship between psychological coping and teachers stress, self efficacy and adaptiveness was examined in a sample of 151 mainstream primary school teachers from Perth, Western Australia. Teaching experience ranged from 1 to 35 years. Three multiple regression analyses were conducted using the psychological constructs of problem-focused coping, emotion-focused coping and avoidant coping as criterion variables. Results indicated that, time management, professional investment, and instructional practices were predictors of problem-focused coping; work related stress was a predictor …

Effect Of An Activity-Based Program On The Direct And Delayed Achievement, Developing Scientific Thinking Skills, Developing Scientific Attitudes And Understanding The Nature Of Science Among Class Teacher Students., Talal Al Zubi

Journal of Educational and Psychological Studies

This study aimed at investigating the impact of using an activity-based program on the direct and delayed achievement, developing scientific thinking skills, developing scientific attitudes and understanding the nature of science among class teacher students. The study sample comprised (101) female students divide into two groups: the experimental group (n=50) and the control group (n=51). Four tools were used: The direct and delayed achievement test, developing scientificthinking skills test, developing scientific attitudes test, and understanding the nature of science test. Results showed that the experimental group (taught by using the activity-based program) outperformed the control group in direct and delayed …