Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Physical Sciences and Mathematics (3661)
- Engineering (968)
- Mathematics (803)
- Chemistry (620)
- Analysis (603)
-
- Other Mathematics (592)
- Environmental Sciences (532)
- Earth Sciences (423)
- Oceanography and Atmospheric Sciences and Meteorology (377)
- Social and Behavioral Sciences (359)
- Computer Sciences (272)
- Civil and Environmental Engineering (261)
- Education (255)
- Arts and Humanities (247)
- Life Sciences (244)
- Applied Mathematics (232)
- Electrical and Computer Engineering (199)
- Chemical Engineering (196)
- Mechanical Engineering (174)
- Physics (166)
- Geology (129)
- Oceanography (121)
- Psychology (106)
- Petroleum Engineering (97)
- Astrophysics and Astronomy (88)
- Business (83)
- Music (73)
- Agriculture (64)
- Medicine and Health Sciences (62)
- Philosophy (60)
- Keyword
-
- Education (321)
- Engineering (271)
- Mathematics (231)
- General (113)
- Chemistry (89)
-
- Louisiana (87)
- Physics (78)
- Chemical (73)
- Business administration (69)
- Economics (62)
- Psychology (62)
- Biology (57)
- Agriculture (54)
- Machine learning (52)
- Gulf of Mexico (44)
- Gravitational waves (42)
- Curricula (38)
- Modeling (38)
- Course catalogs (37)
- General catalogs (37)
- Gumbo (37)
- Gumbo yearbook (37)
- La.) (37)
- Louisiana State University (Baton Rouge (37)
- Louisiana state university (37)
- Lsu yearbook (37)
- Physical (37)
- University archives (37)
- Yearbook (37)
- Computer science (36)
- Publication Year
- Publication
-
- Faculty Publications (2672)
- LSU Doctoral Dissertations (2312)
- LSU Master's Theses (1891)
- LSU Historical Dissertations and Theses (1611)
- Communications on Stochastic Analysis (432)
-
- Honors Capstones (265)
- Journal of Stochastic Analysis (159)
- Seminar on Continuity in Semilattices (102)
- LSU General Catalog (53)
- 1650-1850: Ideas, Aesthetics, and Inquiries in the Early Modern Era (46)
- Gumbo Yearbook (37)
- Clinical Research Faculty Publications (35)
- Publications (29)
- LSU Agricultural Experiment Station Reports (27)
- LSU Faculty Senate Publications (26)
- 2026 LSU Symposium on Control, Learning, and Intelligent Systems (17)
- Civil War Book Review (16)
- Population and Public Health Science Faculty Publications (14)
- Taboo: The Journal of Culture and Education (14)
- Division of Basic Science Faculty Publications (11)
- Components (10)
- Louisiana Agriculture (9)
- College of Engineering Patents (7)
- Reports (6)
- LSU AgCenter Bulletins (5)
- Research Magazine (5)
- Spark! Innovations in Early Childhood Education: A Research-to-Practice Journal for Educators (5)
- Student Senate Enrolled Legislation (5)
- Data (4)
- E-Textbooks (4)
- Publication Type
- File Type
Articles 1621 - 1650 of 9860
Full-Text Articles in Entire DC Network
General Product Formula Of Multiple Integrals Of Lévy Process, Nishant Agrawal, Yaozhong Hu, Neha Sharma
General Product Formula Of Multiple Integrals Of Lévy Process, Nishant Agrawal, Yaozhong Hu, Neha Sharma
Journal of Stochastic Analysis
No abstract provided.
Continuous Dependence On The Coefficients For Mean-Field Fractional Stochastic Delay Evolution Equations, Brahim Boufoussi, Salah Hajji
Continuous Dependence On The Coefficients For Mean-Field Fractional Stochastic Delay Evolution Equations, Brahim Boufoussi, Salah Hajji
Journal of Stochastic Analysis
No abstract provided.
Development Of Artificial Intelligence Approach To Nowcasting And Forecasting Vibrio Prevalence In Coastal Waters, Peyman Hosseinzadeh Namadi
Development Of Artificial Intelligence Approach To Nowcasting And Forecasting Vibrio Prevalence In Coastal Waters, Peyman Hosseinzadeh Namadi
LSU Doctoral Dissertations
Vibrio parahaemolyticus (V.p) is an epidemiologically significant pathogen that poses high risks to the human health and shellfish industry, calling for predictive models for management interventions. This study presents an Artificial Intelligence(AI)-based approach to predicting and reducing the risks. The AI-based approach involves the identification of environmental indicators and their optimum variation ranges favoring V.p prevalence, the development of nowcasting and forecasting models for predicting V.p prevalence, and the creation of remote sensing algorithms for mapping concentrations of V.p and its environmental indicators by synergistically combining the Deep Neural Network (DNN) modeling technique, Genetic Programming (GP) method, R …
Transition Metal Complexes Of Pyridyltriazole And Bipyridine Ligands, Sen Gao
Transition Metal Complexes Of Pyridyltriazole And Bipyridine Ligands, Sen Gao
LSU Doctoral Dissertations
Four Ni(II) complexes have been obtained with the pyridyltriazole ligand, bpt, or the bis(pyridyltriazole) ligand, m-xpt, in chapter 2. This work was carried out as a comparison with the previously established coordination chemistry of copper(II) with bpt and m-xpt. Initially, the reaction between Ni(II) and bpt only produced one mononuclear compound, [Ni(bpt)2(H2O)2](NO3)2 (1). In order to study the formation of Ni-bpt and Ni-m-xpt complexes in solution, mixtures of Ni(NO3)2 and ligand (m-xpt or bpt) were prepared in different ratios and …
Modifications To Gravitational Wave Equation From Canonical Quantum Gravity, Andrea Dapor, Klaus Liegener
Modifications To Gravitational Wave Equation From Canonical Quantum Gravity, Andrea Dapor, Klaus Liegener
Faculty Publications
It is expected that the quantum nature of spacetime leaves its imprint in all semiclassical gravitational systems, at least in certain regimes, including gravitational waves. In this paper we investigate such imprints on gravitational waves within a specific framework: space is assumed to be discrete (in the form of a regular cubic lattice), and this discrete geometry is quantised following Dirac's canonical quantisation scheme. The semiclassical behavior is then extracted by promoting the expectation value of the Hamiltonian operator on a semiclassical state to an effective Hamiltonian. Considering a family of semiclassical states representing small tensor perturbations to Minkowski background, …
Second Harmonic Generation Spectroscopy And Microscopy Of Liposomes, Nanoparticles, And Cells, Prakash Hamal
Second Harmonic Generation Spectroscopy And Microscopy Of Liposomes, Nanoparticles, And Cells, Prakash Hamal
LSU Doctoral Dissertations
Second harmonic generation (SHG) is used to investigate the factors that impact nanoparticle-based drug-delivery applications. In the first study, molecular adsorption and transport kinetics of a positively-charged dye, malachite green isothiocyanate (MGITC), is characterized at the surface of different colloidal liposomes in water using SHG spectroscopy. The molecular interactions of MGITC is compared to our previous investigations with malachite green (MG). In comparison to MG, MGITC demonstrates stronger adsorption and faster transport through lipid membranes. Correspondingly, the SHG experimental results are in excellent agreement with the molecular dynamics (MD) simulations results. A key finding illustrates the importance of functional groups, …
The Value Of Information Under Partial Information For Exponential Utility, Farai Julius Mhlanga, Mbakisi Dube
The Value Of Information Under Partial Information For Exponential Utility, Farai Julius Mhlanga, Mbakisi Dube
Journal of Stochastic Analysis
No abstract provided.
Probing The Surface Acidity Of Supported Aluminum Bromide Catalysts, Md Ashraful Abedin, Swarom Kanitkar, Nitin Kumar, Zi Wang, Kunlun Ding, Graham Hutchings, James J. Spivey
Probing The Surface Acidity Of Supported Aluminum Bromide Catalysts, Md Ashraful Abedin, Swarom Kanitkar, Nitin Kumar, Zi Wang, Kunlun Ding, Graham Hutchings, James J. Spivey
Faculty Publications
Solid acid catalysis is an important class of reactions. The principal advantages of solid acid catalysts as compared to their corresponding fluid acids include minimal waste and ease of product separation. One type of these catalysts is based on aluminum bromide (Al2Br6), which is a stronger Lewis acid than Al2Cl6. In this report, Al(2)Br(6)is grafted on commercial mesoporous silica (CMS), SBA-15 and silica gel to create a solid catalyst similar to the silica-supported Al(2)Cl(6)superacid. These supported Al(2)Br(6)catalysts were characterized by NH3-Temperature Programmed Desorption (TPD), pyridine Diffuse Reflectance for Infrared Fourier Transform Spectroscopy (DRIFTS) and Magic Angle Spinning Nuclear Magnetic Resonance …
Investigation Of Pore-Scale Caco3 Distributions And Their Effects On Stiffness And Permeability Of Sands Treated By Microbially Induced Carbonate Precipitation (Micp), Hai Lin, Muhannad Suleiman, Derick G. Brown
Investigation Of Pore-Scale Caco3 Distributions And Their Effects On Stiffness And Permeability Of Sands Treated By Microbially Induced Carbonate Precipitation (Micp), Hai Lin, Muhannad Suleiman, Derick G. Brown
Faculty Publications
Physical properties of MICP-treated sands are controlled by CaCO3 distributions in pore space, which remain relatively unexplored. CaCO3 can deposit at the particles' contact area (contact-cementing), coat sand particles (grain-coating), or create a cementation bridge between soil grains (matrix-supporting). The objectives of this paper are to determine the dominant CaCO3 distributions in pore space and investigate the effects of CaCO3 distributions on the small-strain stiffness (measured by S-and P-wave velocities) and permeability of MICP-treated sands. To achieve these objectives, cemented-sand and uncemented-sand models combined with three ideal CaCO3 distributions (contact-cementing, grain-coating, and matrix-supporting) were used to estimate the S-and P-wave …
Minimum Reporting Guidelines And The Role Of Causal Inference In Functional Neuroimaging For Obesity Research, Tyler Davis, Hans Rudolf Berthoud, Martin Binks
Minimum Reporting Guidelines And The Role Of Causal Inference In Functional Neuroimaging For Obesity Research, Tyler Davis, Hans Rudolf Berthoud, Martin Binks
Division of Basic Science Faculty Publications
No abstract provided.
Amortized Channel Divergence For Asymptotic Quantum Channel Discrimination, Mark M. Wilde, Mario Berta, Christoph Hirche, Eneet Kaur
Amortized Channel Divergence For Asymptotic Quantum Channel Discrimination, Mark M. Wilde, Mario Berta, Christoph Hirche, Eneet Kaur
Faculty Publications
It is well known that for the discrimination of classical and quantum channels in the finite, non-asymptotic regime, adaptive strategies can give an advantage over non-adaptive strategies. However, Hayashi (IEEE Trans Inf Theory 55(8):3807–3820, 2009. arXiv:0804.0686) showed that in the asymptotic regime, the exponential error rate for the discrimination of classical channels is not improved in the adaptive setting. We extend this result in several ways. First, we establish the strong Stein’s lemma for classical–quantum channels by showing that asymptotically the exponential error rate for classical–quantum channel discrimination is not improved by adaptive strategies. Second, we recover many other classes …
A Cubic C0 Interior Penalty Method For Elliptic Distributed Optimal Control Problems With Pointwise State And Control Constraints, Susanne C. Brenner, Li Yeng Sung, Zhiyu Tan
A Cubic C0 Interior Penalty Method For Elliptic Distributed Optimal Control Problems With Pointwise State And Control Constraints, Susanne C. Brenner, Li Yeng Sung, Zhiyu Tan
Faculty Publications
We design and analyze a cubic C interior penalty method for linear–quadratic elliptic distributed optimal control problems with pointwise state and control constraints. Numerical results that corroborate the theoretical error estimates are also presented. 0
Strong Qcd From Hadron Structure Experiments, S. J. Brodsky, V. D. Burkert, D. S. Carman, J. P. Chen, Z. F. Cui, M. Döring, H. G. Dosch, J. Draayer, L. Elouadrhiri, D. I. Glazier, A. N. Hiller Blin, T. Horn, K. Joo, H. C. Kim, V. Kubarovsky, S. E. Kuhn, Y. Lu, W. Melnitchouk, C. Mezrag, V. I. Mokeev, J. W. Qiu, M. Radici, D. Richards, C. D. Roberts, J. Rodríguez-Quintero, J. Segovia, A. P. Szczepaniak, G. F. De Téramond, D. Winney
Strong Qcd From Hadron Structure Experiments, S. J. Brodsky, V. D. Burkert, D. S. Carman, J. P. Chen, Z. F. Cui, M. Döring, H. G. Dosch, J. Draayer, L. Elouadrhiri, D. I. Glazier, A. N. Hiller Blin, T. Horn, K. Joo, H. C. Kim, V. Kubarovsky, S. E. Kuhn, Y. Lu, W. Melnitchouk, C. Mezrag, V. I. Mokeev, J. W. Qiu, M. Radici, D. Richards, C. D. Roberts, J. Rodríguez-Quintero, J. Segovia, A. P. Szczepaniak, G. F. De Téramond, D. Winney
Faculty Publications
The topical workshop Strong QCD from Hadron Structure Experiments took place at Jefferson Lab from November 6-9, 2019. Impressive progress in relating hadron structure observables to the strong QCD mechanisms has been achieved from the ab initio QCD description of hadron structure in a diverse array of methods in order to expose emergent phenomena via quasi-particle formation. The wealth of experimental data and the advances in hadron structure theory make it possible to gain insight into strong interaction dynamics in the regime of large quark-gluon coupling (the strong QCD regime), which will address the most challenging problems of the Standard …
Effects Of Irrigation Discharge On Salinity Of A Large Freshwater Lake: A Case Study In Chagan Lake, Northeast China, Xuemei Liu, Guangxin Zhang, Jingjie Zhang, Y. Jun Xu, Yao Wu, Yanfeng Wu, Guangzhi Sun, Yueqing Chen, Hongbo Ma
Effects Of Irrigation Discharge On Salinity Of A Large Freshwater Lake: A Case Study In Chagan Lake, Northeast China, Xuemei Liu, Guangxin Zhang, Jingjie Zhang, Y. Jun Xu, Yao Wu, Yanfeng Wu, Guangzhi Sun, Yueqing Chen, Hongbo Ma
Faculty Publications
The salinization of freshwater lakes by agricultural activities poses a threat to many lake ecosystems around the world. Quantitative, medium-to long-term studies are needed to understand how some common agricultural practices, such as the discharge of crop irrigation in the vicinities of large lakes, may affect lake salinization. In this study, hydrological, hydrodynamics, water quality and meteorological datasets were used to analyze the long-term spatial-temporal variations of water salinities of a major lake, the Chagan Lake, in Northeast China. An integrated hydrodynamics-salinity model was used to simulate lake water salinity changes taking place at different times and locations, including (i) …
A Structure-Preserving Fem For The Uniaxially Constrained Q -Tensor Model Of Nematic Liquid Crystals, Juan Pablo Borthagaray, Ricardo H. Nochetto, Shawn W. Walker
A Structure-Preserving Fem For The Uniaxially Constrained Q -Tensor Model Of Nematic Liquid Crystals, Juan Pablo Borthagaray, Ricardo H. Nochetto, Shawn W. Walker
Faculty Publications
We consider the one-constant Landau-de Gennes model for nematic liquid crystals. The order parameter is a traceless tensor field Q, which is constrained to be uniaxial: Q= s(n⊗ n- d- 1I) where n is a director field, s∈ R is the degree of orientation, and d≥ 2 is the dimension. Building on similarities with the one-constant Ericksen energy, we propose a structure-preserving finite element method for the computation of equilibrium configurations. We prove stability and consistency of the method without regularization, and Γ -convergence of the discrete energies towards the continuous one as the mesh size goes to …
Traffic Impacts Of The Covid-19 Pandemic: Statewide Analysis Of Social Separation And Activity Restriction, Scott Parr, Brian Wolshon, John Renne, Pamela Murray-Tuite, Karl Kim
Traffic Impacts Of The Covid-19 Pandemic: Statewide Analysis Of Social Separation And Activity Restriction, Scott Parr, Brian Wolshon, John Renne, Pamela Murray-Tuite, Karl Kim
Faculty Publications
The COVID-19 pandemic resulted in significant social and economic impacts throughout the world. In addition to the health consequences, the impacts on travel behavior have also been sudden and wide ranging. This study describes the drastic changes in human behavior using the analysis of highway volume data as a representation of personal activity and interaction. Same-day traffic volumes for 2019 and 2020 across Florida were analyzed to identify spatial and temporal changes in behavior resulting from the disease or fear of it and statewide directives to limit person-to-person interaction. Compared to similar days in 2019, overall statewide traffic volume dropped …
Cost Of Quantum Entanglement Simplified, Xin Wang, Mark M. Wilde
Cost Of Quantum Entanglement Simplified, Xin Wang, Mark M. Wilde
Faculty Publications
Quantum entanglement is a key physical resource in quantum information processing that allows for performing basic quantum tasks such as teleportation and quantum key distribution, which are impossible in the classical world. Ever since the rise of quantum information theory, it has been an open problem to quantify entanglement in an information-theoretically meaningful way. In particular, every previously defined entanglement measure bearing a precise information-theoretic meaning is not known to be efficiently computable, or if it is efficiently computable, then it is not known to have a precise information-theoretic meaning. In this Letter, we meet this challenge by introducing an …
Mukhanov-Sasaki Equation In A Manifestly Gauge-Invariant Linearized Cosmological Perturbation Theory With Dust Reference Fields, Kristina Giesel, Laura Herold, Bao Fei Li, Parampreet Singh
Mukhanov-Sasaki Equation In A Manifestly Gauge-Invariant Linearized Cosmological Perturbation Theory With Dust Reference Fields, Kristina Giesel, Laura Herold, Bao Fei Li, Parampreet Singh
Faculty Publications
The aim of this article is to understand the role of dust reference fields, often also called clocks, on cosmological perturbations around a classical spatially flat Friedmann-Lemaître-Robertson-Walker (FLRW) universe. We derive the Mukhanov-Sasaki equation for the Brown-Kuchař and Gaussian dust models, which both consider four dust fields as reference fields. The reduced phase space of Dirac observables, that is the gauge-invariant part of the theory, is constructed by means of an observable map applied to all elementary phase space variables of the coupled system, consisting of gravity, a massive scalar field and the dust degrees of freedom and automatically yields …
Pressure Monitoring For Subsurface Leakage Characterization, Mojtaba Mosaheb
Pressure Monitoring For Subsurface Leakage Characterization, Mojtaba Mosaheb
LSU Doctoral Dissertations
Undesirable leakage from underground sedimentary formations is a matter of considerable concern due to implications for water resources contamination and greenhouse gas emissions. Leakage in underground formations can remain undetected for a long period. Pressure monitoring is a dynamic method that can be used for leakage detection and characterization. The pressure signals are affected by the hydraulic characteristics of the reservoir media and leakage pathways. Consequently, the pressure data can be interpreted to obtain information about the hydraulic characteristics of the system. Pressure interpretation is useful for early leakage detection, because the pressure signals travel fast in reservoir media. In …
Habitat Fragmentation And Range Margin Effects On Dispersal And Interactions Between Competitors, Rachel Roxann Harman
Habitat Fragmentation And Range Margin Effects On Dispersal And Interactions Between Competitors, Rachel Roxann Harman
LSU Doctoral Dissertations
Dispersal is a fundamental process that affects local and regional dynamics, including population persistence, range expansion, and interspecific interactions, particularly as disturbance through habitat fragmentation and climate change. Here, my main objective was to ascertain how fragmentation affects dispersal and the interactions of competitors within the local patch and regional landscape. In my second chapter, I assessed dispersal through a literature review and population persistence model to examine the breadth and frequency of different density-emigration forms that occur in nature, including forms that are not prevalent in the literature. I conclude that these rare forms have important population dynamic consequences …
Hydraulic Effects Of The Lower Mississippi River Batture, David P. May
Hydraulic Effects Of The Lower Mississippi River Batture, David P. May
LSU Master's Theses
The Lower Mississippi River (LMR), since the creation of the Mississippi River and Tributaries (MR&T) project, has been extensively modified to support navigation and flood risk reduction. The components of the MR&T system, implemented to support the above missions, have performed successfully for many decades, but not without contention. Rising stages in recent years have led to the questioning of the hydraulic impact of navigation dikes and river training methodologies. Multiple studies have been performed (Biedenharn, 2000, May 2017, Mayne, 2018, and Simon, 2019) that indicate these river training structures have minimal impact to stage during flood conditions. It has …
Detecting Fitness Epistasis In Recently Admixed Populations With Genome-Wide Data, Xumin Ni, Mengshi Zhou, Heming Wang, Karen Y. He, Uli Broeckel, Craig Hanis, Sharon Kardia, Susan Redline, Richard S. Cooper, Hua Tang, Xiaofeng Zhu
Detecting Fitness Epistasis In Recently Admixed Populations With Genome-Wide Data, Xumin Ni, Mengshi Zhou, Heming Wang, Karen Y. He, Uli Broeckel, Craig Hanis, Sharon Kardia, Susan Redline, Richard S. Cooper, Hua Tang, Xiaofeng Zhu
Faculty Publications
Background: Fitness epistasis, the interaction effect of genes at different loci on fitness, makes an important contribution to adaptive evolution. Although fitness interaction evidence has been observed in model organisms, it is more difficult to detect and remains poorly understood in human populations as a result of limited statistical power and experimental constraints. Fitness epistasis is inferred from non-independence between unlinked loci. We previously observed ancestral block correlation between chromosomes 4 and 6 in African Americans. The same approach fails when examining ancestral blocks on the same chromosome due to the strong confounding effect observed in a recently admixed population. …
Contribution Of Velocity Congruency And Apparent Stiffness To Interference Of Bimanual Rhythmic-Discrete Movements., Marcelline E. Dechenaud
Contribution Of Velocity Congruency And Apparent Stiffness To Interference Of Bimanual Rhythmic-Discrete Movements., Marcelline E. Dechenaud
LSU Master's Theses
Many actions feature rhythmic and discrete movements, individually or in combinations. Rhythmic movements are defined as those having no clearly defined start and end-point, while discrete movements have a definite starting and ending posture. Performing a discrete movement against a base rhythm by the contralateral limb typically speeds up the rhythmic movement -- indicating the presence of bimanual coupling. While bimanual rhythmic/rhythmic interaction has been studied extensively in the field, understanding of the interaction between discrete and rhythmic movements has been less represented. In this thesis, I examined two potential sources of interlimb interference during rhythmic-discrete bimanual actions: 1) velocity …
Solvation Structures And Dynamics Of Small Molecules: Experimental And Computational Studies Using Carbonyl Vibrational Modes As Probe, Xiaoliu Zhang
Solvation Structures And Dynamics Of Small Molecules: Experimental And Computational Studies Using Carbonyl Vibrational Modes As Probe, Xiaoliu Zhang
LSU Doctoral Dissertations
Solutions are ubiquitous in both the global environment and the human body, and play a significant role in scientific research and industrial production. The structures and dynamics of solutions have been studied for centuries. However, conventional experimental methods, whose intrinsic measuring time is on the order of nanoseconds to microseconds, could not detect the fast dynamics taking place in the solution on the timescale of femto- and pico-second. In this dissertation, the ultrafast two-dimensional infrared (2DIR) spectroscopy was applied to characterize the structure and dynamics in three different types of solutions on the sub-picosecond timescale. Linear Fourier transform infrared spectroscopy …
Plant And Soil Responses To Sediment Deposition And Nutrient Enrichment In Healthy, Deteriorating, And Newly Created Coastal Marshes In Barataria Basin, Louisiana: Implications For Mississippi River Sediment Diversions, Gina N. Groseclose
LSU Master's Theses
To offset wetland loss in the Mississippi River Delta, sediment diversions that will re-introduce river water and sediment into wetlands are being planned for the lower Mississippi River. River diversions will also deliver high nutrient loads, which may reduce belowground plant productivity, reducing inputs of organic matter important for marsh accretion to keep pace with sea-level rise. However, belowground productivity responses to the combinatory effects of sediment and nutrients are unknown. To test the hypotheses that nutrient enrichment and sediment deposition interact to influence vegetation structure, belowground plant productivity and decomposition, and surface accretion, a field experiment was implemented in …
Some Results On Seymour’S Second-Neighborhood Conjecture And On Decompositions Of Graphs, Farid Bouya
Some Results On Seymour’S Second-Neighborhood Conjecture And On Decompositions Of Graphs, Farid Bouya
LSU Doctoral Dissertations
This dissertation consists of two parts. In the first part, I examine Seymour’s Second-Neighborhood Conjecture, which states that every orientation of every simple graph has at least one vertex v such that the number of vertices of out-distance 2 from v is at least as large as the number of vertices of out-distance 1 from it. I present alternative statements of this conjecture using the language of linear algebra, the last one being completely in terms of the inverse of some matrix. In the second part of this dissertation, comprising of Chapters 2 and 3, I examine two conjectures on …
Hopeless Ugly Food? Estimating Heterogeneous Treatment Effects Of Marketing Strategies On Consumer Attitude And Wtp Via Machine Learning Approaches, Ran Li
LSU Master's Theses
Around one-third of food produced for human consumption is wasted every year, partially caused by consumer's unwillingness to purchase ugly food. We explore opportunities to favorably support consumer's considerations for ugly food by analyzing survey responses from 1099 U.S. adults. We find that without any marketing strategies applied, a great discount has to be provided to sell ugly food. By using appropriate marketing strategies, consumer's attitudes and willingness to pay for ugly food can be changed positively. However, the effects of ugly food marketing attributes are heterogeneous among consumers with different attitudes towards ugly food. Consumers with negative attitudes towards …
The Use Of Refined Analysis In The Evaluation And Determination Of Load Capacity Of Existing Steel Plate Girder Swing Span Bridges, Patrick Duffy
The Use Of Refined Analysis In The Evaluation And Determination Of Load Capacity Of Existing Steel Plate Girder Swing Span Bridges, Patrick Duffy
LSU Master's Theses
Steel Plate Girder Swing Span Bridges are a common and traditional movable bridge type typically used in rural areas of Louisiana but can also be found all over the world. As a result of structural analysis code updates that reflect the increase in highway traffic loads and changes in analysis provisions, many of these bridges have become load posted due to deficient ratings using current traditional AASHTO bridge rating methods. This thesis will explore a more accurate load capacity of these bridges using two identical load posted bridges in Louisiana. Refined analysis methods such as finite element (FE) methods are …
Laboratory And Short-Term Field Performance Of Crumb Rubber Modified Asphalt Emulsion In Chip Seal Applications, Md Nafiur Rahman
Laboratory And Short-Term Field Performance Of Crumb Rubber Modified Asphalt Emulsion In Chip Seal Applications, Md Nafiur Rahman
LSU Master's Theses
Chip sealing is a commonly used pavement maintenance treatment that aims to delay pavement deterioration by reducing water infiltration and restoring skid resistance. Loss of aggregate and bleeding are considered the major failure mechanisms in chip seal, and therefore, are the main design criteria for this treatment method. The objective of this study was to evaluate the laboratory and short-term field performance of chip seals prepared with different types of asphalt emulsions, application rates, and aggregate blends. A newly introduced crumb-rubber modified asphalt emulsion was evaluated that allows chip seal installation at the same temperature of a standard emulsion. Types …
Phosphorus Variability In The Area Of Influence Of The Mid-Barataria Sediment Diversion, Peter Mates
Phosphorus Variability In The Area Of Influence Of The Mid-Barataria Sediment Diversion, Peter Mates
LSU Master's Theses
Man-made levees along the lower Mississippi River prevent delivery of sediment from building and maintaining Louisiana’s coastal wetlands. The Mid-Barataria sediment diversions is designed to reintroduce Mississippi River water, sediment, and nutrients into the sediment-starved Barataria Basin. Phosphorus (P) is an important macronutrient for regulating primary production in coastal marine ecosystems. Wetlands can serve as a sink or source for phosphorus to the overlying water column through various retention and release processes, dependent on concentration. Louisiana coastal systems can be phosphorus limited due to much higher concentrations of bioavailable Nitrogen in river water. The high soluble molar N:P ( >50:1) …