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Articles 31 - 60 of 167
Full-Text Articles in Physical Sciences and Mathematics
Clark Formula For Local Time For One Class Of Gaussian Processes, A A Dorogovtsev, O L Izyumtseva, G V Riabov, Naoufel Salhi
Clark Formula For Local Time For One Class Of Gaussian Processes, A A Dorogovtsev, O L Izyumtseva, G V Riabov, Naoufel Salhi
Communications on Stochastic Analysis
No abstract provided.
Estimation Of Change Point Via Kalman-Bucy Filter For Linear Systems Driven By Fractional Brownian Motions, M N Mishra, B L S Prakasa Rao
Estimation Of Change Point Via Kalman-Bucy Filter For Linear Systems Driven By Fractional Brownian Motions, M N Mishra, B L S Prakasa Rao
Communications on Stochastic Analysis
No abstract provided.
An Analysis Of Environmentally-Persistent Free Radical Formation On Surrogate Soil Systems Containing Iron(Iii) And Copper(Ii) And The Potential Remediation Effects Of Laccases, Andrew Paul Mullet
An Analysis Of Environmentally-Persistent Free Radical Formation On Surrogate Soil Systems Containing Iron(Iii) And Copper(Ii) And The Potential Remediation Effects Of Laccases, Andrew Paul Mullet
Honors Theses
No abstract provided.
Resonance Varieties Of Pure Braid-Like Groups, Jared Able
Resonance Varieties Of Pure Braid-Like Groups, Jared Able
Honors Theses
No abstract provided.
Present Value Calculations In Personal Injury, Nicholas J. Klinka
Present Value Calculations In Personal Injury, Nicholas J. Klinka
Honors Theses
No abstract provided.
Stratigraphic Analysis Of Florissant Fossil Beds National Monument Using Magnetic Susceptibility, Geochemical Comparison, And Gamma Ray Spectroscopy, Jennifer Kenyon
Stratigraphic Analysis Of Florissant Fossil Beds National Monument Using Magnetic Susceptibility, Geochemical Comparison, And Gamma Ray Spectroscopy, Jennifer Kenyon
Honors Theses
No abstract provided.
Road Associated Wildlife Mortality In An Urbanizing Metropolitan Area Of The Southeastern Usa, Lillian Miller
Road Associated Wildlife Mortality In An Urbanizing Metropolitan Area Of The Southeastern Usa, Lillian Miller
Honors Theses
No abstract provided.
Formation And Characterization Of Environmentally Persistent Free Radicals O N Single Crystal A N D Nanoparticle Metal Oxide Surfaces, Mark F. Ditusa
Formation And Characterization Of Environmentally Persistent Free Radicals O N Single Crystal A N D Nanoparticle Metal Oxide Surfaces, Mark F. Ditusa
Honors Theses
No abstract provided.
Superstable Semigroups, Stephanie Olsen
A Monte Carlo Study Of The Pion Absorption And Charge Exchange Cross Section In Lariat, Andrew Olivier
A Monte Carlo Study Of The Pion Absorption And Charge Exchange Cross Section In Lariat, Andrew Olivier
Honors Theses
No abstract provided.
Perfect Matchings And Their Applications, Amanda Mayhall
Perfect Matchings And Their Applications, Amanda Mayhall
Honors Theses
No abstract provided.
Characteristic Length Scales Of The Secondary Relaxations In Glass-Forming Glycerol, Sudipta Gupta, Eugene Mamontov, Niina Jalarvo, Laura Stingaciu, Michael Ohl
Characteristic Length Scales Of The Secondary Relaxations In Glass-Forming Glycerol, Sudipta Gupta, Eugene Mamontov, Niina Jalarvo, Laura Stingaciu, Michael Ohl
Faculty Publications
We investigate the secondary relaxations and their link to the main structural relaxation in glass-forming liquids using glycerol as a model system. We analyze the incoherent neutron scattering signal dependence on the scattering momentum transfer, Q , in order to obtain the characteristic length scale for different secondary relaxations. Such a capability of neutron scattering makes it somewhat unique and highly complementary to the traditional techniques of glass physics, such as light scattering and broadband dielectric spectroscopy, which provide information on the time scale, but not the length scales, of relaxation processes. The choice of suitable neutron scattering techniques depends …
Time-Dependent Neutral Stochastic Functional Differential Equations Driven By A Fractional Brownian Motion, B Boufoussi, S Hajji, E Lakhel
Time-Dependent Neutral Stochastic Functional Differential Equations Driven By A Fractional Brownian Motion, B Boufoussi, S Hajji, E Lakhel
Communications on Stochastic Analysis
No abstract provided.
A Stochastic Transport Theorem, Pedro Catuogno, Simão N Stelmastchuk
A Stochastic Transport Theorem, Pedro Catuogno, Simão N Stelmastchuk
Communications on Stochastic Analysis
No abstract provided.
Mean-Field Limit Versus Small-Noise Limit For Some Interacting Particle Systems, Samuel Herrmann, Julian Tugaut
Mean-Field Limit Versus Small-Noise Limit For Some Interacting Particle Systems, Samuel Herrmann, Julian Tugaut
Communications on Stochastic Analysis
No abstract provided.
Stochastic Integral Representations Of F-Selfdecomposable And F-Semi-Selfdecomposable Distributions, Nadjib Bouzar
Stochastic Integral Representations Of F-Selfdecomposable And F-Semi-Selfdecomposable Distributions, Nadjib Bouzar
Communications on Stochastic Analysis
No abstract provided.
Solution Of The Dirichlet Problem For A Linear Second-Order Equation By The Monte Carlo Method, José Villa-Morales
Solution Of The Dirichlet Problem For A Linear Second-Order Equation By The Monte Carlo Method, José Villa-Morales
Communications on Stochastic Analysis
No abstract provided.
Moments Estimates For Local Times Of A Class Of Gaussian Processes, Olga Izyumtseva
Moments Estimates For Local Times Of A Class Of Gaussian Processes, Olga Izyumtseva
Communications on Stochastic Analysis
No abstract provided.
Probability Distributions And Orthogonal Polynomials Associated With The One-Parameter Fibonacci Group, Andreas Boukas, Philip Feinsilver, Anargyros Fellouris
Probability Distributions And Orthogonal Polynomials Associated With The One-Parameter Fibonacci Group, Andreas Boukas, Philip Feinsilver, Anargyros Fellouris
Communications on Stochastic Analysis
No abstract provided.
On The Second Fundamental Theorem Of Asset Pricing, Rajeeva L Karandikar, B V Rao
On The Second Fundamental Theorem Of Asset Pricing, Rajeeva L Karandikar, B V Rao
Communications on Stochastic Analysis
No abstract provided.
Influence Of The Mississippi River On Pseudo-Nitzschia Spp. Abundance And Toxicity In Louisiana Coastal Waters, Sibel Bargu, Melissa M. Baustian, Nancy N. Rabalais, Ross Del Rio, Benjamin Von Korff, R. Eugene Turner
Influence Of The Mississippi River On Pseudo-Nitzschia Spp. Abundance And Toxicity In Louisiana Coastal Waters, Sibel Bargu, Melissa M. Baustian, Nancy N. Rabalais, Ross Del Rio, Benjamin Von Korff, R. Eugene Turner
Faculty Publications
The presence of domoic acid (DA) toxin from multiple species of Pseudo-nitzschia is a concern in the highly productive food webs of the northern 1,* 2,3 2 1 1,4 1 1 2 3 4 Gulf of Mexico. We documented the Pseudo-nitzschia presence, abundance, blooms, and toxicity over 3 years along a transect ∼100 km west of the Mississippi River Delta on the continental shelf. Pseudo-nitzschia were present throughout the year and occurred in high abundances (>10 cells l ) in the early spring months during high Mississippi River (MSR) flow (∼20,000 m s ) but were most abundant ( …
Density Functional Theory Calculations On The Doping Sequence Of Mnxfen(1-X)Ge, Jordan C. Ball
Density Functional Theory Calculations On The Doping Sequence Of Mnxfen(1-X)Ge, Jordan C. Ball
Honors Theses
No abstract provided.
Size-Dependent Top-Down Control On Phytoplankton Growth By Microzooplankton In Eutrophic Lakes, Wai Hing Wong, Nancy N. Rabalais, R. Eugene Turner
Size-Dependent Top-Down Control On Phytoplankton Growth By Microzooplankton In Eutrophic Lakes, Wai Hing Wong, Nancy N. Rabalais, R. Eugene Turner
Faculty Publications
We hypothesized that the grazing on phytoplankton by the microzooplankton community is size-dependent and, therefore, the top-down control on phytoplankton by microzooplankton community could be one possible mechanism explaining why small phytoplankton become less abundant than large phytoplankton in eutrophic waters. We tested this hypothesis using the dilution method to measure microzooplankton grazing rates and phytoplankton growth rates in the eutrophic waters of the Barataria estuary, southeastern Louisiana. Microzooplankton grazing rates on the slower growing, small phytoplankton (\5 lm) were higher than on the large phytoplankton ([20 lm) which had relatively faster growth rates. The proportional loss of the small, …
A Geochronological And Stratigraphic Reconstruction Of The Middle Barataria Bay Receiving Basin, Joseph Ethan Thomas Hughes
A Geochronological And Stratigraphic Reconstruction Of The Middle Barataria Bay Receiving Basin, Joseph Ethan Thomas Hughes
LSU Master's Theses
Barataria Bay, one of the largest receiving basins for the Mississippi deltaic complex, is the location of a proposed river-sediment diversion for delta restoration. In order to determine how the sediment in the receiving-basin may respond to diversion flows, twenty-five sediment vibracores were collected from a 115 km2 study area located near Myrtle Grove and Bayou Dupont, southeast of New Orleans, LA. These cores were subject to multiple tests, including gamma bulk density scans, grain size analysis, and loss-on-ignition, in order to identify the lithology and stratigraphy. In addition, 137Cs and 14C dating techniques were employed in order to construct …
Pesticide Partitioning In Louisiana Wetland Aand Ricefield Sediment, Brendan Michael Marsh
Pesticide Partitioning In Louisiana Wetland Aand Ricefield Sediment, Brendan Michael Marsh
LSU Master's Theses
Pesticides are used globally and are often found within bodies of water. The EPA investigates the potential environmental impact through computer modeling in order to help mitigate some of the regulatory burden of pesticide fate investigation. Currently when pesticides enter a water body, the Exposure Analysis Modeling System (EXAMS) estimates partitioning depth as 5 cm and assumes equal distribution. This assumption was tested with a wide variety of pesticides with varying Koc ranges and water solubilities. Savillex 150 ml Teflon tubes were filled with wetland and ricefield sediments with fresh and seawater as the aqueous phase. The seven pesticides tested …
Source Mechanism Analysis Of Single-Well Microseismic Data Using Full-Wavefield Moment Tensor Inversion, Trudy Watkins
Source Mechanism Analysis Of Single-Well Microseismic Data Using Full-Wavefield Moment Tensor Inversion, Trudy Watkins
LSU Master's Theses
Receiver angular coverage of microseismic sources occurring during hydraulic fracturing treatments is an important factor to consider when interpreting moment tensor inversion results. A horizontal receiver array can provide greater angular coverage of vertical failure planes than a vertical receiver array. The source orientation can be accurately determined if the array samples both sides of the failure plane. However, the compensated-linear-vector-dipole (CLVD) mechanism can be overestimated by up to ~40% for double-couple (DC) sources and the isotropic mechanism can be overestimated by ~70% for CLVD sources. Source mechanism constraints on the moment tensor inversion are used to mitigate the lack …
Simulating Behavioral Microcystin Impairment In Fish, Nicholas Richard Keeney
Simulating Behavioral Microcystin Impairment In Fish, Nicholas Richard Keeney
LSU Master's Theses
Fish experiencing blooms of the cyanobacteria genera Microcystis and Anabaena acquire microcystin and saxitoxin through ingestion of contaminated food and absorption of dissolved toxin. Even low chronic doses induce sensory and motor impairment—the impact of which is unquantified in wild populations. Here, I introduce Lagrangian particle models for cyanobacteria and fish which test the hypotheses that impairment symptoms suppress movement and growth. This is implemented within the Finite-Volume Coastal Ocean Model (FVCOM). Cyanobacteria particles move vertically according to mixing and buoyancy (a function of cellular reservoirs). Fish navigate the horizontal domain, foraging in high growth areas, and fleeing when toxin …
In Situ Geochemistry Of Middle Ordovician Dolomites Of The Upper Mississippi Valley: Evaluation Of The Dorag Model And New Implications For Dolomitizing Fluids, John Michael Callen
In Situ Geochemistry Of Middle Ordovician Dolomites Of The Upper Mississippi Valley: Evaluation Of The Dorag Model And New Implications For Dolomitizing Fluids, John Michael Callen
LSU Master's Theses
The dolomitization and diagenetic history of Ordovician carbonates of southern Wisconsin has been studied for over a century. Previous studies attributed dolomitization to various single or multiple diagenetic factors and environments. The goal of the study was to resolve arguments regarding dolomitization models, including Badiozamani’s often cited but recently questioned mixing zone model, using LA-ICP-MS focusing on REE to determine the nature of dolomitizing fluids. Analysis revealed that particulate material incorporated into the dolomite affected the geochemical results of many of the samples. Integrating geochemical data with petrographic evidence for diagenetic history, the studied Decorah Formation dolomites were assigned to …
A Contemporary Approach To A Classic Model: Exploring The Influence Of Local Interactions And Disturbance On Mangrove Forest Dynamics With A Spatially-Explicit Version Of Forman, Kieley Shannon Hurff
A Contemporary Approach To A Classic Model: Exploring The Influence Of Local Interactions And Disturbance On Mangrove Forest Dynamics With A Spatially-Explicit Version Of Forman, Kieley Shannon Hurff
LSU Master's Theses
The mangrove forest gap dynamic model, FORMAN, was the first individual-based model (IBM) to simulate the long-term successional dynamics of three Caribbean mangrove species, Avicennia germinans, Laguncularia racemosa, and Rhizophora mangle. Assumptions under the spatially implicit approach of gap dynamic models limit their application to small-scale simulations. An expanded, spatially-explicit version of FORMAN was developed to allow for simulations of larger spatial grids, through the inclusion of localized soil conditions and neighborhood-based light resource competition. This expanded model was used to investigate the influence of localized interactions and disturbances of varying size on forest dynamics. A data-model comparison using field …
Social Media Network Data Mining And Optimization, Neha Clare Jose
Social Media Network Data Mining And Optimization, Neha Clare Jose
LSU Master's Theses
Many small social aid organizations could benefit from collaborating with other organizations on common causes, but may not have the necessary social relationships. We present a framework for a recommender system for the Louisiana Poverty Initiative that identifies member organizations with common causes and aims to forge connections between these organizations. Our framework employs a combination of graph and text analyses of the organizations' Facebook pages. We use NodeXL, a plugin to Microsoft Excel, to download the Facebook graph and to interface with SNAP, the Stanford Network Analysis Platform, for calculating network measurements. Our framework extends NodeXL with algorithms that …