Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Physical Sciences and Mathematics (8507)
- Engineering (2534)
- Education (2290)
- Computer Sciences (1948)
- Social and Behavioral Sciences (1800)
-
- Environmental Sciences (1438)
- Physics (1217)
- Life Sciences (1213)
- Chemistry (1111)
- Arts and Humanities (1010)
- Earth Sciences (987)
- Mathematics (840)
- Law (691)
- Medicine and Health Sciences (684)
- Electrical and Computer Engineering (648)
- Oceanography and Atmospheric Sciences and Meteorology (547)
- Computer Engineering (534)
- Business (504)
- Higher Education (435)
- Science and Mathematics Education (421)
- Mechanical Engineering (406)
- Statistics and Probability (381)
- Astrophysics and Astronomy (352)
- Educational Administration and Supervision (301)
- Civil and Environmental Engineering (295)
- Geology (285)
- Natural Resources and Conservation (283)
- Teacher Education and Professional Development (277)
- History (273)
- Educational Assessment, Evaluation, and Research (272)
- Institution
-
- University of Nebraska - Lincoln (1091)
- University of South Florida (535)
- Utah State University (428)
- Louisiana State University (398)
- Wright State University (389)
-
- TÜBİTAK (387)
- Brigham Young University (373)
- Singapore Management University (373)
- California Polytechnic State University, San Luis Obispo (369)
- Missouri University of Science and Technology (337)
- Old Dominion University (326)
- Purdue University (324)
- Clemson University (303)
- University of Nevada, Las Vegas (277)
- Georgia Southern University (269)
- University of Central Florida (254)
- University of Texas at El Paso (254)
- University of Kentucky (227)
- University of Arkansas, Fayetteville (213)
- Nova Southeastern University (211)
- Portland State University (206)
- Wayne State University (200)
- Air Force Institute of Technology (197)
- Technological University Dublin (187)
- Edith Cowan University (180)
- Virginia Commonwealth University (170)
- San Jose State University (169)
- City University of New York (CUNY) (166)
- University of Northern Iowa (164)
- University of New Mexico (160)
- Keyword
-
- Education (211)
- Mathematics (132)
- Applied sciences (78)
- Climate change (78)
- Higher education (78)
-
- Georgia Southern University (71)
- Student newspaper (70)
- Engineering (66)
- Simulation (64)
- Optimization (60)
- Sustainability (59)
- Technology (59)
- Newspaper (58)
- Science (57)
- 2012 (56)
- Research (54)
- Physics (52)
- United States (52)
- Curriculum (49)
- Statistics (49)
- Assessment (48)
- Education, General (48)
- Newsletter (48)
- Remote sensing (48)
- Academic achievement (47)
- Teaching (46)
- Pure sciences (45)
- Student achievement (45)
- Chemistry (44)
- History (44)
- Publication
-
- Theses and Dissertations (717)
- Electronic Theses and Dissertations (370)
- Faculty Publications (301)
- Research Collection School Of Computing and Information Systems (295)
- Dissertations (256)
-
- USF Tampa Graduate Theses and Dissertations (171)
- Computer Science & Engineering Syllabi (164)
- Theses (156)
- Studia UBB Geologia (145)
- International Congress on Environmental Modelling and Software (144)
- Master's Theses (143)
- Graduate Theses and Dissertations (132)
- UNLV Theses, Dissertations, Professional Papers, and Capstones (130)
- Open Access Theses & Dissertations (127)
- Masters Theses (119)
- LSU Master's Theses (116)
- Articles (110)
- LSU Doctoral Dissertations (109)
- Student Works (2010-2019) (106)
- Applied Mathematics & Information Sciences (105)
- Turkish Journal of Electrical Engineering and Computer Sciences (101)
- Doctoral Dissertations (100)
- Publications (97)
- Publications and Research (96)
- All Graduate Theses and Dissertations, Spring 1920 to Summer 2023 (95)
- Browse all Theses and Dissertations (93)
- Nebraska Tractor Tests (91)
- All Dissertations (86)
- All Theses (86)
- Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions) (84)
- Publication Type
- File Type
Articles 18961 - 18990 of 19309
Full-Text Articles in Entire DC Network
Can The Rule Of Law Survive Judicial Politics?, Charles G. Geyh
Can The Rule Of Law Survive Judicial Politics?, Charles G. Geyh
Articles by Maurer Faculty
No abstract provided.
Subgradient Formulas For Optimal Control Problems With Constant Dynamics, Lingyan Huang
Subgradient Formulas For Optimal Control Problems With Constant Dynamics, Lingyan Huang
LSU Doctoral Dissertations
In this thesis our fi_x000C_rst concern is the study of the minimal time function corresponding to control problems with constant convex dynamics and closed target sets. Unlike previous work in this area, we do not make any nonempty interior or calmness assumptions and the minimal time functions is generally non-Lipschitzian. We show that the Proximal and Fréchet subgradients of the minimal time function are computed in terms of normal vectors to level sets. And we also computed the subgradients of the minimal time function in terms of the F-projection. Secondly, we consider the value function for Bolza Problem in optimal …
Law Student Knowledge Of Legal Interviewing: A Case Study Of Self-Evaluation Using Video Annotation, William Taggart Monroe
Law Student Knowledge Of Legal Interviewing: A Case Study Of Self-Evaluation Using Video Annotation, William Taggart Monroe
LSU Doctoral Dissertations
Video has long been used to support learner reflection in professional education programs in law, health, and education. Emerging video analysis tools offer learners the ability to highlight segments of video and focus their attention to specific moments or aspects of performance. These emerging tools afford opportunities for more systematic observation, analysis, and deliberate reflection on learner performance than was available previously. Expertise research has found that representative, rigorous tasks followed by immediate feedback and error correction constitute deliberate practice. Training environments that incorporate deliberate practice and emerging video annotation and analysis tools provide opportunities for learners pinpoint strengths and …
Using A Collaborative Inquiry Process And Data To Affect Curriculum In An Independent School, Sheri Lyn Pastor Goings
Using A Collaborative Inquiry Process And Data To Affect Curriculum In An Independent School, Sheri Lyn Pastor Goings
LSU Master's Theses
Literature clearly supports the use of data to support and drive school policy. Data can be immensely informative; however test scores are not the sole indicator of school effectiveness. To successfully implement a plan for data use, it is imperative to a provide climate of teacher buy-in and collaboration. Multiple sources of data should be considered collectively prior to making any judgment(s) about students, teachers, curriculum, or schools. Data use for effective decision-making is an on-going process that requires strategic planning and a long-term commitment. Over the past year, I have led the math department through a modified version of …
Educational Looping And Retention In The Middle School Setting, Mary Elizabeth Feighery
Educational Looping And Retention In The Middle School Setting, Mary Elizabeth Feighery
LSU Master's Theses
Educational looping is an educational method where teachers remain with the same core group of students over multiple academic years. The current research on this topic shows a strong positive correlation between the effects of looping and the growth of personal relationships between students and teachers, but neglects to examine the connection between looping and student educational growth. This paper explores the relationship between looping and academic gains, as well as between looping and retention of content material over time. This paper explores both the relationship between looping and academic gains and between looping and retention of content material, and …
Functional Promiscuity Of The Cog0720 Family, Gabriela Phillips, Laura L. Grochowski, Shilah Bonnett, Huimin Xu, Marc Bailly, Crysten Haas-Blaby, Basma El Yacoubi, Dirk Iwata-Reuyl, Robert H. White, Valérie De Crécy-Lagard
Functional Promiscuity Of The Cog0720 Family, Gabriela Phillips, Laura L. Grochowski, Shilah Bonnett, Huimin Xu, Marc Bailly, Crysten Haas-Blaby, Basma El Yacoubi, Dirk Iwata-Reuyl, Robert H. White, Valérie De Crécy-Lagard
Chemistry Faculty Publications and Presentations
The biosynthesis of GTP derived metabolites such as tetrahydrofolate (THF), biopterin (BH4), and the modified tRNA nucleosides queuosine (Q) and archaeosine (G+) relies on several enzymes of the Tunnel-fold superfamily. A subset of these proteins include the 6-pyruvoyl-tetrahydropterin (PTPS-II), PTPS-III, and PTPS-I homologs, all members of the COG0720 family, that have been previously shown to transform 7,8-dihydroneopterin triphosphate (H2NTP) into different products. PTPS-II catalyzes the formation of 6-pyruvoyltetrahydropterin in the BH4 pathway. PTPS-III catalyzes the formation of 6-hydroxylmethyl-7,8-dihydropterin in the THF pathway. PTPS-I catalyzes the formation of 6-carboxy-5,6,7,8-tetrahydropterin in the Q pathway. Genes of these …
Diversity Of Archaeosine Synthesis In Crenarchaeota, Gabriela Phillips, Manal A. Swairjo, Kirk W. Gaston, Marc Bailly, Patrick A. Limbach, Dirk Iwata-Reuyl, Valérie De Crécy-Lagard
Diversity Of Archaeosine Synthesis In Crenarchaeota, Gabriela Phillips, Manal A. Swairjo, Kirk W. Gaston, Marc Bailly, Patrick A. Limbach, Dirk Iwata-Reuyl, Valérie De Crécy-Lagard
Chemistry Faculty Publications and Presentations
Archaeosine (G+) is found at position 15 of many archaeal tRNAs. In Euryarchaeota, the G+ precursor, 7-cyano-7-deazaguanine (preQ0), is inserted into tRNA by tRNA-guanine transglycosylase (arcTGT) before conversion into G+ by ARChaeosine Synthase (ArcS). However, many Crenarchaeota known to harbor G+ lack ArcS homologs. Using comparative genomics approaches, two families that could functionally replace ArcS in these organisms were identified: 1) GAT-QueC, a two-domain family with an N-terminal glutamine amidotransferase class-II domain fused to a domain homologous to QueC, the enzyme that produces preQ0; 2) QueF-like, a family homologous to the bacterial enzyme catalyzing the reduction of preQ0 to 7- …
Overview Of The 2010 Carbonaceous Aerosols And Radiative Effects Study (Cares), Rahul A. Zaveri, William J. Shaw, Daniel J. Cziczo, Beat Schmid, Richard Ferrare, M. Lizabeth Alexander, Raul Alvarez, W. Patrick Arnott, Dean B. Atkinson, Sunil Baidar, Robert M. Banta, James Barnard, Josef Beranek, Larry K. Berg, Fred Brechtel, W. Alan Brewer, John F. Cahill, Brian Cairns, Christopher D. Cappa, D. Chand, S. China, Jennifer M. Comstock, Manvendra K. Dubey, Robert C. Easter, M. H. Erickson, Jerome Fast, Cody Floerchinger, B. Flowers, Edward C. Fortner, Jeffrey S. Gaffney, Mary K. Gilles, Kyle Gorkowski, William Gustafson, Madhu Gyawali, J. Hair, R. M. Hardesty, Joseph Harworth, Scott C. Herndon, Naruki Hiranuma, Chris Hostetler, John M. Hubbe, John T. Jayne, H. Jeong, B. Tom Jobson, Evgueni Kassianov, Lawrence I. Kleinman, C. Kluzek, W. Berk Knighton, Katheryn R. Kolesar, Chongai Kuang, Alena Kubátová, Andrew O. Langford, Alexander Laskin, N. Laulainen, Richard D. Marchbanks, Claudio Mazzoleni, Fan Mei, Ryan C. Moffet, Dan Nelson, Michael Obland, Hilke Oetjen, Timothy B. Onasch, I. Ortega, Matteo Ottaviani, Mikhail Pekour, Kimberly A. Prather, James Gregory Radney, Raymond R. Rogers, Scott P. Sandberg, Arthur J. Sedlacek, Christoph J. Senff, Gunnar I. Senum, Ari Setyan, John E. Shilling, Manishkumar Shrivastava, C. Song, Stephen R. Springston, R. Subramanian, Kaitlyn Suski, Jason Tomlinson, Rainer M. Volkamer, H. W. Wallace, Jian Wang, A. M. Weickmann, Douglas R. Worsnop, Xiao-Ying Yu, Alla Zelenyuk, Qi Zhang
Overview Of The 2010 Carbonaceous Aerosols And Radiative Effects Study (Cares), Rahul A. Zaveri, William J. Shaw, Daniel J. Cziczo, Beat Schmid, Richard Ferrare, M. Lizabeth Alexander, Raul Alvarez, W. Patrick Arnott, Dean B. Atkinson, Sunil Baidar, Robert M. Banta, James Barnard, Josef Beranek, Larry K. Berg, Fred Brechtel, W. Alan Brewer, John F. Cahill, Brian Cairns, Christopher D. Cappa, D. Chand, S. China, Jennifer M. Comstock, Manvendra K. Dubey, Robert C. Easter, M. H. Erickson, Jerome Fast, Cody Floerchinger, B. Flowers, Edward C. Fortner, Jeffrey S. Gaffney, Mary K. Gilles, Kyle Gorkowski, William Gustafson, Madhu Gyawali, J. Hair, R. M. Hardesty, Joseph Harworth, Scott C. Herndon, Naruki Hiranuma, Chris Hostetler, John M. Hubbe, John T. Jayne, H. Jeong, B. Tom Jobson, Evgueni Kassianov, Lawrence I. Kleinman, C. Kluzek, W. Berk Knighton, Katheryn R. Kolesar, Chongai Kuang, Alena Kubátová, Andrew O. Langford, Alexander Laskin, N. Laulainen, Richard D. Marchbanks, Claudio Mazzoleni, Fan Mei, Ryan C. Moffet, Dan Nelson, Michael Obland, Hilke Oetjen, Timothy B. Onasch, I. Ortega, Matteo Ottaviani, Mikhail Pekour, Kimberly A. Prather, James Gregory Radney, Raymond R. Rogers, Scott P. Sandberg, Arthur J. Sedlacek, Christoph J. Senff, Gunnar I. Senum, Ari Setyan, John E. Shilling, Manishkumar Shrivastava, C. Song, Stephen R. Springston, R. Subramanian, Kaitlyn Suski, Jason Tomlinson, Rainer M. Volkamer, H. W. Wallace, Jian Wang, A. M. Weickmann, Douglas R. Worsnop, Xiao-Ying Yu, Alla Zelenyuk, Qi Zhang
Chemistry Faculty Publications and Presentations
Substantial uncertainties still exist in the scientific understanding of the possible interactions between urban and natural (biogenic) emissions in the production and transformation of atmospheric aerosol and the resulting impact on climate change. The US Department of Energy (DOE) Atmospheric Radiation Measurement (ARM) program’s Carbonaceous Aerosol and Radiative Effects Study (CARES) carried out in June 2010 in Central Valley, California, was a comprehensive effort designed to improve this understanding. The primary objective of the field study was to investigate the evolution of secondary organic and black carbon aerosols and their climate-related properties in the Sacramento urban plume as it was …
An Investigation Into Technology And Motivational Influences On Creativity And Product Output In Apparel Design Students, Charles Freeman
An Investigation Into Technology And Motivational Influences On Creativity And Product Output In Apparel Design Students, Charles Freeman
LSU Doctoral Dissertations
The purpose of this study was to investigate the application of a social psychological theoretical framework to the study of creativity in apparel design, with a focus on technological engagement and motivational factors. A sample of 32 apparel design students from two major southeastern universities were selected to complete a self-report instruments regarding motivation and technological engagement. Students completed the Abbreviated Torrance Test for Adults (ATTA) as well as a design brief. Design illustrations were evaluated by a panel of expert judges in the field of apparel design using a consensual assessment technique (CAT). Results indicate levels of technology and …
Hadronic Physics From Extensive Air Showers, Guofeng Yuan
Hadronic Physics From Extensive Air Showers, Guofeng Yuan
LSU Doctoral Dissertations
Although cosmic rays were discovered exactly one century ago, the most fundamental questions about them are still not answered, especially the origin and composition of ultra-high energy cosmic rays (UHECR). The Pierre Auger Observatory (PAO) is constructed with the goal of solving these mysteries. The PAO uses hybrid design and take advantage of both the air fluorescence and surface array technique. Since its debut in 2004, PAO has published several important scientific results.
The most probable candidate for UHECR composition is proton or iron nucleus. The two candidates do show differences in both fluorescence detector (FD) signal and in the …
Opportunistic Lookahead Routing Procedure For Delay Tolerant Networks, Priyanka Rotti
Opportunistic Lookahead Routing Procedure For Delay Tolerant Networks, Priyanka Rotti
LSU Master's Theses
Delay Tolerant Networks are wireless networks that have sporadic network connectivity, thus rendering the existence of instantaneous end-to-end paths from a source to a destination difficult or impossible. Hence, in such networks, message delivery relies heavily on the store-and-forward paradigm to route messages. However, limited knowledge of the contact times between the nodes poses a big challenge to effective forwarding of messages. In this thesis, we discuss several aspects of routing in DTNs and present one algorithm and three variants for addressing the routing problem in DTNs: (i) the Look-ahead Protocol, in which the forwarding decision at each node to …
The Effects Of Carbon On Nitrogen Transformations In Restored Wetland And Wastewater Soils, Jared M. Theriot
The Effects Of Carbon On Nitrogen Transformations In Restored Wetland And Wastewater Soils, Jared M. Theriot
LSU Master's Theses
Since the industrialization of the Haber-Bosch process in the 1940’s, anthropogenic activity has nearly doubled the Earth’s nitrogen fixation. Furthermore, nitrate has become the number one groundwater contaminant in the United States and has harmful effects such as eutrophication, algal blooms, and pollution of drinking water. Soils from two sites influenced by high nitrate loading were examined to determine their biogeochemical integrity. First, the Loosahatchie Bar, located northwest of Memphis, Tennessee, is influenced by excess surface water nitrate loading by the Mississippi River. The Loosahatchie Bar is a newly restored wetland that now has similar hydrologic influence to an upstream …
U-Pb Geochronology Of Detrital Zircon In Quartzites Of The Sawtooth Metamorphic Complex, Sawtooth Range, Idaho, Usa, Philip Gerard Bergeron
U-Pb Geochronology Of Detrital Zircon In Quartzites Of The Sawtooth Metamorphic Complex, Sawtooth Range, Idaho, Usa, Philip Gerard Bergeron
LSU Master's Theses
In southwest Laurentia, the Paleoproterozoic Selway terrane has been proposed to extend as basement from the Wyoming Province to the Proterozoic rifted margin of Laurentia primarily based on limited exposures. The Sawtooth Metamorphic Complex (SMC), Idaho, a series of high-grade metasupracrustal rocks lies within the proposed region of the Selway terrane and may represent remnants of this terrane. Alternatively, it may represent another basement terrane of cratonic North America. To test the hypothesis that the SMC belongs to the Selway terrane, detrital zircon U/Pb ages of five quartzite samples were analyzed by LA-ICP-MS to establish age, possible provenance, and age …
Note – Playing Hot Potato In The Market: The Ninth Circuit’S Better Approach To Calculating Loss For Securities Fraud Sentencing, Erica Connolly
Note – Playing Hot Potato In The Market: The Ninth Circuit’S Better Approach To Calculating Loss For Securities Fraud Sentencing, Erica Connolly
UC Law Journal
In United States v. Berger, the Court of Appeals for the Ninth Circuit departed from the Second and Fifth Circuits regarding the standard required to determine loss for securities fraud under the Federal Sentencing Guidelines. Unlike its sister circuits, the Ninth Circuit held that the Supreme Court’s reasoning in Dura Pharmaceuticals, Inc. v. Broudo for loss causation in civil securities fraud actions did not apply to the criminal sentencing context. Instead, the Ninth Circuit endorsed price inflation, which was rejected in Dura Pharmaceuticals, as a method of determining loss under the Guidelines. This Note examines the circuits’ decisions in light …
Controller Reduction For Linear Systems, Lili Kong
Controller Reduction For Linear Systems, Lili Kong
LSU Doctoral Dissertations
This dissertation proposes some H-infinity and H2 performance preserving controller reduction methods for linear systems. The proposed methods can guarantee robust stability and performance for the closed-loop system with the reduced order controllers. Several H-infinity stability and performance preserving controller reduction methods are proposed in this dissertation. It is shown that the weighting functions used in the proposed controller reduction methods can be directly obtained from the parametrization of the H-infinity controllers. Hence, comparing with the most existing controller reduction approaches, the proposed controller reduction methods require less computation and are easy to apply. At the same time, several algorithms …
Assessing Effectiveness Of Concept Map As Instructional Tool In High School Biology, Ritchie Adlaon
Assessing Effectiveness Of Concept Map As Instructional Tool In High School Biology, Ritchie Adlaon
LSU Master's Theses
This thesis emphasizes on an alternate instructional tool called “Concept Map”. The goal of this study was to determine the effectiveness of using concept maps in improving the science achievement of 10th -grade students and compare it with a traditional approach for a Biology unit. Furthermore, the interaction of the student’s concept mapping ability and their learning gains was investigated. Both the control and the experimental groups were required to take a pre test before instruction and a posttest at the end of three weeks. The test consisting of 31 questions was used to assess learning gains on a Biology …
Design Of Electron Dual Foil Scattering Systems For Elekta Infinity Radiotherapy Accelerators, Justin Deloy Leblanc
Design Of Electron Dual Foil Scattering Systems For Elekta Infinity Radiotherapy Accelerators, Justin Deloy Leblanc
LSU Master's Theses
Purpose: To design a dual foil scattering system within Elekta Infinity radiotherapy accelerator constraints that results in clinical electron beams that meet flatness criteria of ±3% (±4%) along its principal axes (diagonal axes) for the 25x25cm2 applicator and most probable surface energies of 7-20 MeV (1 MeV increments). Methods: An analytical electron dual scattering foil system simulator was commissioned and verified using Monte Carlo (MC) simulations. Verification required comparing analytical simulator with MC-calculated electron fluence profiles for identical geometries: (1) only primary foil and (2) both primary and secondary foils in the beam. Also, simulator-calculated bremsstrahlung dose was validated by …
Examination Of The Relationship Between Specific Classes Of Social Skill Behaviors And Academic Competence On The Social Skills Improvement System Rating-Scales, Michael James Vance
Examination Of The Relationship Between Specific Classes Of Social Skill Behaviors And Academic Competence On The Social Skills Improvement System Rating-Scales, Michael James Vance
LSU Doctoral Dissertations
An individual’s social competencies and interpersonal relationships have been repeatedly linked to a number of behaviors not typically directly associated with social skills including depression (Hokanson & Rupert, 1991) and aggressive behavior (McColloch & Gilbert, 1991). In addition to these more social behaviors, social skills have also been shown to be predictive of both risk and protective factors related to academic functioning (Newcomb, Bukowski, & Pattee, 1993; Parker & Asher, 1987). The current study aims to add to the literature by examining the relationship between teacher, parent, and self-ratings of specific classes of social skill behaviors and teacher ratings of …
Judicial Mindsets: The Social Psychology Of Implicit Theories And The Law, Victor D. Quintanilla
Judicial Mindsets: The Social Psychology Of Implicit Theories And The Law, Victor D. Quintanilla
Articles by Maurer Faculty
This article introduces Dr. Carol Dweck’s seminal and significant line of psychological research on the phenomenon of implicit theories and draws on this research as a lens through which we might better understand judicial decision-making. In particular, the article focuses on the implications of two types of implicit theories – whether people believe that phenomena are static and fixed versus dynamic and malleable. By introducing this research, this article aims to forward a research agenda designed to examine how social, contextual, and situational forces influence judicial behavior.
An entity theory reflects the mindset that phenomena are fixed and unlikely to …
Evaluation Of Pleistocene To Holocene (Mis 5 To 1) Climatic Changes In Southwestern Black Sea: A Palynological Study Of Dsdp Site 380, Shannon Ferguson
Evaluation Of Pleistocene To Holocene (Mis 5 To 1) Climatic Changes In Southwestern Black Sea: A Palynological Study Of Dsdp Site 380, Shannon Ferguson
LSU Master's Theses
Site 380 of the Deep Sea Drilling Program [DSDP] is located in the southwestern region of the Black Sea (42°05.94’, 29°36.82’E). The location of this site is important due to its proximity to the narrow Bosphorus strait, the only present-day connection between the Black Sea and the Aegean Sea. Drops in eustatic sea level during extensive Pleistocene glacial episodes disconnected the Black Sea from the Aegean Sea at the Bosphorus strait, creating a change from brackish to freshwater within the Black Sea during these intervals. Organic-walled phytoplankton (dinoflagellate cysts, acritarchs, and fresh-water algae) are investigated to better constrain these glacio-eustatic …
An Evaluation Of Alternative Approaches For Simulating Animal Movement In Spatially-Explicit Individual-Based Models, Katherine Shepard Watkins
An Evaluation Of Alternative Approaches For Simulating Animal Movement In Spatially-Explicit Individual-Based Models, Katherine Shepard Watkins
LSU Doctoral Dissertations
Simulating animal movement in spatially-explicit individual-based models (IBMs) is both challenging and critically important to accurately estimating population dynamics. I compared four distinct movement approaches or sub-models (restricted-area search, kinesis, event-based, and run and tumble) in a series of simulation experiments. I used an IBM loosely based on a small pelagic fish that simulated growth, mortality, and movement of a cohort on a 2-dimensional grid. First, I tested the sub-models calibrated (i.e., trained) with a genetic algorithm in one set of environmental conditions in three other novel environments. The sub-models performed well, except restricted-area search and event-based that needed to …
Unit Assessments For High School Geometry, Damayanthi Srimathi Jegart
Unit Assessments For High School Geometry, Damayanthi Srimathi Jegart
LSU Master's Theses
Abstract Eight unit tests closely aligned with the Louisiana Comprehensive Curriculum for high school geometry were developed. Five of these were administered, each to the same 115 students spanning all ability and attainment levels in a magnet school in a semi-rural Louisiana district. The results were analyzed to determine the quality of the questions as well as to glean information about student-learning. The test scores were compared to the results of the state-administered end-of-course test for high-school geometry. The main findings were as follows: a) most students do not communicate their reasoning or justification unless directed to do so, and …
Proton Dose Calculations In Homogeneous Media, John Wesley Chapman, Jr.
Proton Dose Calculations In Homogeneous Media, John Wesley Chapman, Jr.
LSU Master's Theses
In this study, a proton pencil beam dose calculation algorithm was developed for a parallel, monoenergetic beam incident on a homogeneous water phantom. Fermi-Eyges theory (Eyges 1948) was used to transport pencil beams, and the characteristic width of elastic scatter events was modeled using the differential Moliere scattering power (Gottschalk 2010). The incorporation of this scattering power formalism allowed our model to account for multiple Coulomb scattering, single scattering, plural scattering, and rigorously accounted for material effects on scatter. Nonelastic nuclear interactions were incorporated into an additional pencil beam model. The attenuation of primary fluence due to nuclear events was …
A Seminaphthofluorescein-Based Fluorescent Chemodosimeter For The Highly Selective Detection Of Cysteine, Xiaofeng Yang, Yixing Guo, Robert M. Strongin
A Seminaphthofluorescein-Based Fluorescent Chemodosimeter For The Highly Selective Detection Of Cysteine, Xiaofeng Yang, Yixing Guo, Robert M. Strongin
Chemistry Faculty Publications and Presentations
A fluorescent chemodosimeter for cysteine detection was developed based on a tandem conjugate addition and intramolecular cyclization reaction. The method exhibited an excellent selectivity for cysteine over other biothiols such as homocysteine and glutathione.
An Investigation Into Urban Elementary Teachers' Educational Beliefs In Regards To Teaching Writing: Comparing Experiences And Self-Reported Beliefs To Teacher Practices, Shalanda Stanley
LSU Doctoral Dissertations
This six week study investigated six urban elementary teachers’ educational beliefs in regards to teaching writing, comparing their personal histories as writers with their self-reported beliefs on writing and teaching writing, with that of their teacher practices. A further analysis examined how closely aligned their teacher practices were to research-validated practices. During this ethnographic case study, three questions were explored. These questions were: (a) How do teachers’ personal histories with writing inform their beliefs regarding writing in general, as well as their beliefs on teaching writing?, (b) How do teachers’ educational beliefs in regards to teaching writing inform their instructional …
Three Essays On Technology Adoption And The Roles Of Off-Farm Labor, Human Capital, And Risk In Contemporary Us Agriculture, Hiroki Uematsu
Three Essays On Technology Adoption And The Roles Of Off-Farm Labor, Human Capital, And Risk In Contemporary Us Agriculture, Hiroki Uematsu
LSU Doctoral Dissertations
Agriculture can be defined as the domestication and farming of plant and animal species to produce food and fiber products. Our society is fundamentally dependent on agriculture as it is the primary source of nutrients essential to human activities. Historically, the introduction of agriculture and technological development thereafter drastically changed the way human civilization has evolved into what it is today. New technologies allow farmers to produce more outputs with fewer inputs. Saved resources from agricultural production, such as land, labor and time, were used elsewhere to produce other goods and services that enrich the quality of our life. The …
Detection And Characterization Of Environmentally Persistent Free Radicals (Epfrs) In Soils And Sediments From Superfund Sites, Albert Leo N. Dela Cruz
Detection And Characterization Of Environmentally Persistent Free Radicals (Epfrs) In Soils And Sediments From Superfund Sites, Albert Leo N. Dela Cruz
LSU Doctoral Dissertations
Environmentally persistent free radicals (EPFRs) from combustion-generated PM have been demonstrated to form via reactions of molecular precursors with redox-active transition metals at 150-500C thermal reactions in a few seconds reaction times. While ambient temperatures are much lower, soils/sediments contain similar transition metals, and reaction times of contaminants in soils/sediments are years, rather than seconds. This questions whether EPFRs could be formed at ambient temperatures in soils/sediments from Superfund sites that are contaminated with hazardous materials. Superfund soils contaminated with PCP from Georgia and Montana, and sediments contaminated with PAHs from Washington. Using EPR spectroscopy, EPFR concentrations and structural assignments …
The Role Of Managers Within The Welfare System: How Race And Negative Stereotypes About Clients Affect Managers' Tolerance Of Caseworker Discretion, Alethia Marie Picciola
The Role Of Managers Within The Welfare System: How Race And Negative Stereotypes About Clients Affect Managers' Tolerance Of Caseworker Discretion, Alethia Marie Picciola
LSU Master's Theses
Previous research studies found differences in social welfare policy implementation based on the racial and ethnical differences of clients, workers, and managers. The public perception of welfare recipients being content with living on government money and unmotivated to become self-sufficient is a central theme throughout American culture. The current study examined whether parish-level managers’ personal beliefs about their clients are associated with their tolerance of frontline staff’s discretionary practices. Additionally, the author examined the role that the race of managers plays in the personal beliefs they hold about their clients as well as their tolerance of frontline discretion. This study …
Fatigue Performance Of Existing Bridges Under Dynamic Loads From Winds And Vehicles, Wei Zhang
Fatigue Performance Of Existing Bridges Under Dynamic Loads From Winds And Vehicles, Wei Zhang
LSU Doctoral Dissertations
During the life cycle of bridges, varied amplitude of stress ranges on structural details are induced by the random traffic and wind loads. The progressive deteriorated road surface conditions might accelerate the fatigue damage accumulations. Micro-cracks in structural details might be initiated. An effective structural modeling scheme and a reasonable fatigue damage accumulation rule are essential for stress range acquisitions and fatigue life estimation. The present research targets at the development of a fatigue life and reliability prediction methodology for existing steel bridges under real wind and traffic environment with the capability of including multiple random parameters and variables in …
Integrative Gene Regulatory Network Analysis Reveals Light-Induced Regional Gene Expression Phase Shift Programs In The Mouse Suprachiasmatic Nucleus., Haisun Zhu, Rajanikanth Vadigepalli, Rachel Rafferty, Gregory E Gonye, David R Weaver, James S Schwaber
Integrative Gene Regulatory Network Analysis Reveals Light-Induced Regional Gene Expression Phase Shift Programs In The Mouse Suprachiasmatic Nucleus., Haisun Zhu, Rajanikanth Vadigepalli, Rachel Rafferty, Gregory E Gonye, David R Weaver, James S Schwaber
Department of Pathology, Anatomy, and Cell Biology Faculty Papers
We use the multigenic pattern of gene expression across suprachiasmatic nuclei (SCN) regions and time to understand the dynamics within the SCN in response to a circadian phase-resetting light pulse. Global gene expression studies of the SCN indicate that circadian functions like phase resetting are complex multigenic processes. While the molecular dynamics of phase resetting are not well understood, it is clear they involve a "functional gene expression program", e.g., the coordinated behavior of functionally related genes in space and time. In the present study we selected a set of 89 of these functionally related genes in order to further …