Digital Commons Network^™

An Analysis Of Fecal Coliform Bacteria As A Water Quality Indicator, Janet Heyl Vail

Dissertations

The focus of this study is to assess the efficacy of fecal coliform bacteria as a microbiological water quality indicator. The scientific and educational context of fecal coliform bacteria is explored through analysis of large sets of water quality data, focused field monitoring projects, and review of commonly used resources for school-based and volunteer water-related studies. Analyzed data sets include long term sampling (10 years), multiple sites, daily samples, storm event samples, and other parameters monitored in parallel with bacteria. Special attention is given to data sets from Kent County, Michigan. A background reference site in Michigan unimpacted by humans …

Thermal Lattice Boltzmann Simulations Of Variable Prandtl Number Turbulent Flows, Min Soe, George Vahala, Pavol Pavlo, Linda L. Vahala, Hudong Chen

Electrical & Computer Engineering Faculty Publications

Thermal lattice Boltzmann (TLBE) models that utilize the single relaxation time scalar Bhatnagar, Gross, and Krook collision operator have an invariant Prandtl number. For flows with arbitrary Prandtl number, a matrix collision operator is introduced. The relaxation parameters are generalized so that the transport coefficients become density independent. TLBE simulations are presented for two-dimensional free decaying turbulence induced by a strongly perturbed double velocity shear layer for various Prandtl numbers.

Utb/Tsc This Week 1998-04, University Of Texas At Brownsville And Texas Southmost College. Office Of News And Information

UTB/TSC Archives - This Week Newsletter

No abstract provided.

Modeling Environmental Effects On Msx Prevalence And Intensity In Eastern Oyster (Crassostrea Virginica) Populations, Michelle Christine Paraso

OES Theses and Dissertations

An oyster population model coupled with a model for Haplosporidium nelsoni, the causative agent of the oyster disease MSX, was used with salinity time-series constructed from Delaware River flow measurements to study environmentally-induced variations in the annual cycle of this disease. Simulations with this model were designed to investigate the effect of increased or decreased spring freshwater discharge, the timing of high freshwater runoff, the presence or absence of a fall or late spring phytoplankton bloom, and the occurrence of a warm winter on MSX prevalence and intensity in Delaware Bay oyster populations. Model simulations for the lower Bay site …

Sparse Equation-Eigen Solvers For Symmetric/Unsymmetric Positive-Negative-Indefinite Matrices With Finite Element And Linear Programming Applications, Hakakizumwami Birali Runesha

Civil & Environmental Engineering Theses & Dissertations

Vectorized sparse solvers for direct solutions of positive-negative-indefinite symmetric systems of linear equations and eigen-equations are developed. Sparse storage schemes, re-ordering, symbolic factorization and numerical factorization algorithms are discussed. Loop unrolling techniques are also incorporated in the coding to enhance the vector speed. In the indefinite solver, which employs various pivoting strategies, a simple rotation matrix is introduced to simplify the computer implementation. Efficient usage of the incore memory is accomplished by the proposed "restart memory management" schemes. A sparse version of the Interior Point Method, IPM, has also been implemented that incorporates the developed indefinite sparse solver for linear …

Study Of Human Factors Variables In Battle Outcome Prediction Models, David Andrew Glovier

Engineering Management & Systems Engineering Theses & Dissertations

Over time there have been many improvements in models that are used to predict the outcome of battles. Currently there is much supposition and speculation surrounding the use of human performance related factors as additional inputs to battle simulation models to improve their accuracy. However there is no conclusive scientific evidence which shows that these factors do make a significant difference. This study investigates the use of factors that may impact on the human performance directly or indirectly in battle prediction models. These factors consist of traditional human factors and external factors that may influence the human performance. The research …

The Geomorphological History Of An Alluvial Fan Complex In Nelson County, Virginia, Melinda Ann Youngblood

OES Theses and Dissertations

An alluvial fan complex blankets a portion of the Rockfish Valley in Nelson County Virginia, located along the eastern slope of the Blue Ridge Mountains. The seven-km² field area contains three mappable relict alluvial surfaces (Qf1, Qf2, and Qf3) and one modern surface (Qa1), each of which is underlain by fluvial deposits dominated by greenstone and charnokite cobbles. The four surfaces were mapped according to topographic position and degree of stream dissection. Alluvial deposits underlying each surface were characterized using a 3-part clast weathering scale based on greenstone clast weathering rinds and using soil development criteria (clay content, Munsell …

Studies Of Warm-Core Rings Using A Particle-In-Cell Method, John James Holdzkom Ii

OES Theses and Dissertations

A particle-in-cell (PIC) model is developed and applied to problems involving the evolution of warm-core rings. Such models are a hybrid of conventional Eulerian and Lagrangian models. They are ideally suited for problems in which a lower layer outcrops to the surface, such as at the boundary of a ring.

The model is developed in three implementations. First, for purposes of model validation, a reduced gravity model is described. The PIC model reproduces the essential characteristics of analytical solutions to the reduced gravity equations and integral invariants are conserved to a high degree. Next, a 1.5-layer model is developed and …

Inversion And Analysis Of Remotely Sensed Atmospheric Water Vapor Measurements At 940nm, Jack Cutler Larsen

Mechanical & Aerospace Engineering Theses & Dissertations

The understanding and acceptance of remotely sensed atmospheric data depends strongly on the steps taken to characterize experiment error and validate observations through comparisons to other independent measurements. A formal error analysis of the Stratospheric Aerosol and Gas Experiment II (SAGE II) water vapor operational inversion algorithm is performed and compared to previous results. Random measurement errors were characterized by segmented least-squares profile fitting of the slant path absorption which found the error to be uncorrelated in the stratosphere with estimated variances significantly smaller than expected from 18-30 km. Estimates of null space error were developed from radiosonde hygrometers in …

Twenty Years Worth Of The Scp, Alvin Plantinga

Faith and Philosophy: Journal of the Society of Christian Philosophers

No abstract provided.

Could A Classical Theist Be A Physicalist?, William F. Vallicella

Faith and Philosophy: Journal of the Society of Christian Philosophers

No abstract provided.

Implementing Systematic Sensitivity Analysis Using Gempack, Kenneth R. Pearson, Channing Arndt

GTAP Technical Papers Archive

In economic simulation, results often hinge crucially on values of key exogenous inputs (the values of the parameters of the model and the shocks applied). Computational burden has, in the past, hindered systematic investigation of the impacts of variations in these key exogenous inputs. In this document, practical methods for conducting systematic sensitivity analysis for any model implemented using the GEMPACK suite of software are documented.

The procedures described here are based on GTAP Technical Paper number 2 which sets out the theory behind the Gaussian quadrature methods on which the automated procedure is based. The procedures allow modellers to …

Dynamic Process Management In Clam, Juan Gomez, Vernon J. Rego

Department of Computer Science Technical Reports

No abstract provided.

Signals, Timers, And Continuations For Multithreaded User-Level Protocols, Juan Carlos Gomez, James Pollard, Vernon J. Rego

Department of Computer Science Technical Reports

No abstract provided.

Seamless Metacomputing With Bond, Ladislau Bölöni, Kyung Koo Jun, Mihai Sirbu, Dan C. Marinescu

Department of Computer Science Technical Reports

No abstract provided.

Domain Decomposition: A Linear Algebra Viewpoint, A. Hadjidimos, D. Noutsos, M. Tzoumas

Department of Computer Science Technical Reports

No abstract provided.

Comparison Of Ice-Shelf Creep Flow Simulations With Ice-Front Motion Of Filchner-Ronne Ice Shelf, Antarctica, Detected By Sar Interferometry, Christina L. Hulbe, Eric Rignot, D. R. Macayeal

Geology Faculty Publications and Presentations

Comparison between numerical model ice-shelf flow simulations and synthetic aperture radar (SAR) interferograms is used to study ice-flow dynamics at the Hemmen Ice Rise (HIR) and Lassiter Coast (LC) corners of the iceberg-calving front of the Filchner-Ronne Ice Shelf, Antarctica. The interferograms are constructed from SAR images provided by the European Space Agency's remote-sensing satellites (ERS-lj2). Narrow bands of large shear strain rate are observed along the boundaries between fastflowing ice-shelf ice and no-flow boundaries. Large rifts, opened where the ice shelf separates from the coast, appear to be filled with a melange of sea ice, ice-shelf fragments, and snow. …

Reduction Of Thermal Deflection And Random Response Of Composite Structures With Embedded Shape Memory Alloy At Elevated Temperature, Zhiwei Zhong

Mechanical & Aerospace Engineering Theses & Dissertations

A feasibility study on the reduction of thermal deflection and random response of the composite structures using shape memory alloys (SMA) at elevated temperatures is presented in this dissertation. The characteristics of SMA are introduced and the structural problems, static and dynamic, of SMA fiber reinforced composites are investigated. The stress-strain relations are developed for a composite lamina with embedded SMA fibers. The finite element system equations including shape memory effect are derived. A consistent two-step solution procedure is developed for solving the static and dynamic problems of composite structures with embedded SMA fibers subjected to combined acoustic and thermal …

Mathematical Models Of Tumors And Their Remote Metastases, Carryn Bellomo

Mathematics & Statistics Theses & Dissertations

Clinical observations and indications in the literature have led us to investigate several models of tumors. For example, it has been shown that a tumor has the ability to send out anti-growth factors, or inhibitors, to keep its remote metastases from growing. Thus, we model the depleting effect of such a growth inhibitor after the removal of the primary tumor (thus removing the source) as a function of time t and distance from the original tumor r.

It has also been shown clinically that oxygen and glucose are nutrients critical to the survival and growth of tumors. Thus, we model …

Implementation Of The Graphical User Interface Of The Parint Package In Java, Gwowen Fu

Masters Theses

The graphical user interface (GUI) of the ParInt interface package provides a convenient and efficient way for users to integrate multivariate functions on a parallel system or a network.

This thesis introduces basic structure of the GUI and gives a detailed description of each class of how the classes communicate with each other and how the connection with the parallel program is made.

Justice In Plea Bargaining, Fred C. Zacharias

William & Mary Law Review

No abstract provided.

The Attorney-Client Privilege For In-House Counsel When Negotiating Contracts: A Response To Georgia-Pacific Corp. V. Gaf Roofing Manufacturing Corp., Mark C. Van Deusen

William & Mary Law Review

No abstract provided.

Profile: Approved! Morris Science Project And Regional Fitness Center, University Relations

Profile (1996-)

In these pages: Goodbye, Chancellor Dave; The Bill Stewart Legacy

Crossover From Pure Ising To Random-Exchange Dominated Behavior Of The Two-Dimensional Antiferromagnet Rb2Co1-XMgXF4, Christian Binek, Wolfgang Kleemann, David P. Belanger

Christian Binek Publications

The temperature dependence of the uniform susceptibility χ of diluted two-dimensional Ising antiferromagnets Rb₂Co_1-xMg_xF₄, 0<~xN(x), but also in relation to the “local” phase transition temperatures TN′ throughout the Griffiths regime, T_N(x)<~T_N′<~T_N(0), a satisfactory quantitative description of χ vs T is deduced for any x above the percolation threshold. ©1998 The American Physical Society

Implementing Alternative Assessment Techniques In Teacher Education, Thomasenia L. Adams

Teaching and Learning: The Journal of Natural Inquiry & Reflective Practice

No abstract provided.

Ursinus Magazine, Winter / Spring 1998, Wendy Greenberg, Joanna Doyle, Lynne Edwards, Dave Sherman, Claire Furia, Rebecca Class, Meghan J. Hoerner, David Bowen

Ursinus Magazine, 1995–Present

The Philip and Muriel Berman Museum of Art calendar • Tax challenges update • "The Oval" rounds out art additions • Ursinus in the news • Student report: Quest to cast vote casts doubt on apathy • Arts on campus • Faculty achievements • Transitions • Careers that cross the disciplines: Skills matter more than majors • Ursinus flag was poles apart • Letters to the editor • A celebration of achievement in science • Coming home: Ursinus' first African American graduate renews his ties with the campus community • Geoff Bloom: Fancy footwork awakens sleeping dogs • Ruth Faunce …

Sound, Basic Education: North Carolina Adopts An Adequacy Standard In Leandro V. State, William Kent Packard

North Carolina Law Review

No abstract provided.

The Midwest Quarterly; Vol. 39 No. 3, Victoria Wodzak, A. James Wohlpart, B. H. Gilley, Mathew Miller, Arthur Scheer, Nancy Clasby, Laura Lee Washburn, Priscilla Atkins, Eric Gardner, Kim Horner, Michael Hudson, Gary Lechliter, Robert Lee, Susan Marshall, Dennis Saleh, James Scofield, Lauren Smith, Ronald Wallace, Adonna Zordel Helmig, Kenneth Robbins, Midwest Quarterly Editors

The Midwest Quarterly: A Journal of Contemporary Thought

VICTORIA WODZAK elegantly limns the distance, interaction, and tension between warriors and weavers, the heroic code and the domestic code, in classical epics, notably those of Homer and Beowulf. Wodzak is a Ph.D. candidate in the English program of the University of Missouri-Columbia, teaches composition for that Department, and not least is the mother of seven children, ages one to sixteen, to whom she attributes at least part of the inspiration for her essay. This is her first published scholarly work.

A. JAMES WOHLPART discusses the deft use Mary Shelley made of Frankenstein to comment on the isolation of …

กิจกรรมสิ่งแวดล้อม

Thai Environment

No abstract provided.

สัมภาษณ์ : การใช้พลังงานนิวเคลียร์ และการจัดการกากกัมมันตรังสีให้ปลอดภัยต่อสิ่งแวดล้อม รองเลขาธิการสำนักงานพลังงานปรมาณูเพื่อสันติ, กองบรรณาธิการ

Thai Environment

No abstract provided.