Digital Commons Network^™

Long-Term Spatial Stability Of Coyote (Canis Latrans) Home Ranges In Southeastern Colorado, Ann M. Kitchen, Eric M. Gese, Edward R. Schauster

United States Department of Agriculture Wildlife Services: Staff Publications

Long-term stability of territorial boundaries has not been well documented in canids. To evaluate the prevalence of long-term spatial stability of coyote (Canis latrans) home ranges, we compared the overlap of territorial boundaries and the spatial distribution of telemetry locations of packs in southeastern Colorado. From August 1983 to July 1988 (period l), 16 coyotes from six packs were radio-tracked. From April 1996 to August 1997 (period 2), 12 coyotes from six packs were captured and tracked in the same area. Mean percentage of overlap of pack ranges was 89.8 ± 8.3% (+SD) for period 1 ranges over …

Process Flow Optimization Studies Through Discrete Event Simulation, Milind Chokshi

Electrical & Computer Engineering Theses & Dissertations

Computer-aided simulation has begun to emerge as a powerful tool for numerical analysis of the behavior and anticipated performance of industrial systems and their optimization. Applications include materials handling, storage and controls systems, prediction of manufacturing efficiencies, and production optimization. Simulations are used to test baseline models and subsequently analyze new production concepts, operating strategies, and planned procedures prior to costly implementation.

The study of process flows in a manufacturing environment is difficult due to its inherent stochastic nature. Breakdown of the sub-systems and failures of machines is a random process and needs to be solved based on concepts of …

Diffusion Problems In Wound Healing And A Scattering Approach To Immune System Interactions, Julia Suzanne Arnold

Mathematics & Statistics Theses & Dissertations

A theoretical model for the existence of a Critical Size Defect (CSD) in certain animals is the focus of the majority of this dissertation. Adam [1] recently developed a one-dimensional model of this phenomenon, and chapters I–V address the exist the CSD in a two-dimensional model and a three-dimensional model. The two dimensional (or 1-d circular) model is the more appropriate for a study of CSD's. In that model we assume a circular wound of uniform depth and develop a time-independent form of the diffusion equation relevant to the study of the CSD phenomenon. It transpires that the range of …

Photodegradation Of Pcbs In Natural Waters, Adriana R. Nicolaescu

Masters Theses

PCBs are widely distributed in the environment and they are biologically refractory and toxic compounds. There is great interest in understanding their fate in the environment, and also for finding safe and effective degradation methods.

This study is concerned with the photodegradation of four PCB congeners: PCB 5, PCB 18, PCB 77, PCB 128 in natural waters. Natural waters contain humic substances which can greatly influence the environmental fate of the PCBs. The different degradation of the four congeners was studied in standardized systems and in humic acid or nitrate solutions, under environmental conditions. DMDE and Methoxyclor (whose environmental half-lifetimes …

Water Resources Review - Spring 2000 Vol 13 No 1, Annis Water Resources Institute

AWRI Reviews

No abstract provided.

Circulation, Vol. 7, No. 2, Center For Coastal Physical Oceanography, Old Dominion University, Bettina Fach

CCPO Circulation

Spring 2000 issue of CCPO Circulation featuring article "Cruising the Southern Ocean" by Bettina Fach

Holographic Optical Tweezers: Development And Analysis Of The First Holodeck Prototype, Matthew T. Dearing '00

Honors Projects

Tightly focused light can be used to non-invasively trap and manipulate micro-objects, a technique called "optical tweezing." By utilizing the large field gradients present in a focused laser beam, micro-particles-including biological specimens and many other materials-can become confined in all three dimensions. While optical tweezing has existed for over a decade, it has generally been limited to trapping one or two particles at a time. We have developed a technique that uses laser light to assemble large numbers of micro-particles in a highly controllable way. Here we describe, for the first time, the complete implementation of holographic optical tweezer arrays …

An Analysis Of The Effectiveness Of A Constructive Induction-Based Virus Detection Prototype, Kevin T. Damp

Theses and Dissertations

Computer viruses remain a tangible threat to systems both within the Department of Defense and throughout the greater international data communications infrastructure on which the DoD increasingly depends. This threat is exacerbated continually, as new viruses are introduced at an alarming rate by the growing collection of connected machines and their operators. Unfortunately, current antivirus solutions are ill-equipped to address these issues in the long term. This thesis documents an investigation into the use of constructive induction, a form of machine learning, as a supplemental antivirus technique theoretically capable of detecting previously unknown viruses through generalized decision-making techniques. A group …

Importance Of Migrating Salmon Smolt In Ring-Billed (Larus Delawarensis) And California Gull (L. Californicus) Diets Near Priest Rapids Dam, Washington, Darryl L. York, John L. Cummings, John E. Steuber, Patricia A. Pochop, Christi A. Yoder

United States Department of Agriculture Wildlife Services: Staff Publications

Ring-billed (Larus delawarensis) and California Gulls (L. californicus) have been implicated in depredations on migrating salmon smolt in the Columbia River. As part of a gull management program conducted in 1995 and 1996, we collected L. delawarensis (n = 120) and L. californicus (n = 45) near Priest Rapids Dam, Washington, and analyzed stomach contents to determine food habits and thus the importance of fish in gull diets. Percent volume measurements and index of relative importance rankings suggested a greater reliance on fish by L. californicus than by L. delawarensis. Peak percent consumption of fish by …

X-Ray Structure Of The Quinoprotein Ethanol Dehydrogenase From Pseudomonas Aeruginosa: Basis Of Substrate Specificity, Thomas Keitel, Annette Diehl, Tobias Knaute, John J. Stezowski, Wolfgang Hohne, Helmut Görisch

John J. Stezowski Publications

The homodimeric enzyme form of quinoprotein ethanol dehydrogenase from Pseudomonas aeruginosa ATCC 17933 crystallizes readily with the space group R3. The X-ray structure was solved at 2.6 Å resolution by molecular replacement. Aside from differences in some loops, the folding of the enzyme is very similar to the large subunit of the quinoprotein methanol dehydrogenases from Methylobacterium extorquens or Methylophilus W3A1. Eight W-shaped β-sheet motifs are arranged circularly in a propeller-like fashion forming a disk-shaped superbarrel. No electron density for a small subunit like that in methanol dehydrogenase could be found. The prosthetic group is located in the centre …

A Longitudinal Assessment Of Temperament In Octopus Bimaculoides, David Loyd Sinn

Dissertations and Theses

Cephalopods, including Octopus spp., are highly intelligent molluscs that play major roles in many marine food webs, both as top-level feeders (Ambrose, 1984) as well as by constituting a major source of protein for the animals above them (Lang, Hochberg, Ambrose, & Engle, 1997). They also are fascinating organisms for behavioral studies, with elaborate repertoires of behavior based on plasticity and learning (Wells, 1962a; 1962b; 1978) which in complexity rivals that of the vertebrates. The study of individual differences in behavior is a facet of behavioral research that has recently gained attention in the literature (Gosling & John, 1999). Traditionally, …

Influence Of Advection On Measurements Of The Net Ecosystem-Atmosphere Exchange Of Co2 From A Very Tall Tower, Chuixiang Yi, Kenneth J. Davis, Peter S. Bakwin, Bernard W. Berger, Linsey C. Marr

Publications and Research

In most studies of the net ecosystem-atmosphere exchange of CO₂ (NEE) using tower-based eddy covariance( EC) systems it has been assumed that advection is negligible. In this study we use a scalar conservation budget method to estimate the contribution of advection to NEE measurements from a very tall tower in northern Wisconsin. We examine data for June-August 1997. Measured NEEo, calculated as the sum of the EC flux plus the rate of change of storage below the EC measurement level, is expected to be constant with measurement height, and we take the differences between levels as a measure of …

An Optical Coherence Microscope For 3-Dimensional Imaging In Developmental Biology, Barbara M. Hoeling, Andrew D. Fernandez, Richard C. Haskell, Eric Huang, Whittier R. Myers, Daniel C. Petersen, Sharon E. Ungersma, Ruye Wang, Mary E. Williams, Scott E. Fraser

All HMC Faculty Publications and Research

An optical coherence microscope (OCM) has been designed and constructed to acquire 3-dimensional images of highly scattering biological tissue. Volume-rendering software is used to enhance 3-D visualization of the data sets. Lateral resolution of the OCM is 5 mm (FWHM), and the depth resolution is 10 mm (FWHM) in tissue. The design trade-offs for a 3-D OCM are discussed, and the fundamental photon noise limitation is measured and compared with theory. A rotating 3-D image of a frog embryo is presented to illustrate the capabilities of the instrument.

Air Quality And Shelterbelts: Odor Mitigation And Livestock Production, A Literature Review, John Tyndall, Joe Colletti

United States Department of Agriculture, Forest Service / University of Nebraska-Lincoln: Faculty Publications

This literature review is focused on the potential for innovative use of trees and other vegetation to reduce the odor associated with livestock production. The goal is to examine available evidence to assess if trees and shelterbelts may: 1) be able to help control odor through physical and biological means, and 2) be an economically feasible technology for livestock producers as well as surrounding communities.

Hydrologic Variation In The Northern Great Plains During The Last Two Millennia, Sherilyn C. Fritz, Emi Ito, Zicheng Yu, Kathleen R. Laird, Daniel R. Engstrom

Department of Earth and Atmospheric Sciences: Faculty Publications

Reconstructions of lake-water salinity at decadal resolution for the last 2,000 years are compared among three lakes in North Dakota to infer regional patterns of drought. The intersite comparisons are used to distinguish local variation in climate or hydrology from regional patterns of change. At one lake, diatom-inferred salinity and lake-water Mg/Ca inferred from ostracode shell chemistry are coherent, both in terms of direction and magnitude of change, indicating that each is a robust technique for reconstructing lake-water chemistry. The data show that the last 2,000 years have been characterized by frequent shifts between high and low salinity, suggesting shifts …

Dynamic Fluvial Systems And Gravel Progradation In The Himalayan Foreland, Nicholas Brozovic, Douglas W. Burbank

Daugherty Water for Food Global Institute: Faculty Publications

Although the large-scale stratigraphy of many terrestrial foreland basins is punctuated by major episodes of gravel progradation, the relationships of such facies to hinterland tectonism and climate change are often unclear. Structural reentrants provide windows into older and more proximal parts of the foreland than are usually exposed, and thus provide key insights to earlier phases of foreland evolution. Our magnetostratigraphic studies show that, although the major lithofacies preserved within the Himachal Pradesh structural reentrant in northwestern India resemble Neogene facies in Pakistan, they have a much greater temporal and spatial variability. From 11.5 to 7 Ma, major facies boundaries …

Parity Violation In Neutron Resonances In 115in, Sharon L. Stephenson, J D. Bowman, J Corvi, Bret E. Crawford, P P J. Delheij, C M. Frankle, M Iinuma, J N. Knudsen, L Y. Lowie, A Masaike, Y Matsuda, G E. Mitchell, S I. Penttila, H Postma, N R. Roberson, S J. Seestrom, E I. Sharapov, H M. Shimizu, Y-F Yen, V W. Yuan, L Zanini

Physics and Astronomy Faculty Publications

Parity nonconservation (PNC) was studied in p-wave resonances in indium by measuring the helicity dependence of the neutron total cross section in the neutron energy range 6.0–316 eV with the time-of-flight method at LANSCE. A total of 36 p-wave neutron resonances were studied in ¹¹⁵In, and statistically significant asymmetries were observed for nine cases. An analysis treating the PNC matrix elements as random variables yields a weak matrix element of M=(0.67_-0.12^+0.16) meV and a weak spreading width of Γ_w=(1.30_-0.43^+0.76)×10^-7 eV.

Smart For One, Dumb For All. Review Of: Luxury Fever: Why Money Fails To Satisfy In An Era Of Excess By Robert H. Frank, Robert Costanza

Institute for Sustainable Solutions Publications and Presentations

Book review of Luxury Fever: Why Money Fails to Satisfy in an Era of Excess. Robert H. Frank. Free Press, New York, 1999.

Ecology (Re)Defined, Mary Rowland

United States Bureau of Land Management: Staff Publications

This slender, well-written volume is a compendium of terms, 60 altogether, purportedly intended to introduce the layperson to the discipline of ecology. With encyclopedic listings from "Air" to "Zoos," we learn that potential effects of global warming include the spread of malaria and other tropical diseases to previously uninfected areas, and that the world's six billion humans consume 40% of the planet's photosynthetic output. It is clear from the first entry that the book is as much an environmental primer as a science-based one. For example, we read under the topic "Air" that "We should not continue human activities that …

The Probe, Issue 209 – March/April 2000

The Probe: Newsletter of the National Animal Damage Control Association

Summary of NADCA Questionnaire Results
NADCA Discusses Future -- Bob Timm, PROBE Editor
Vern VerMass Receives Spalsbury Award
Las Vegas 2000 - One Man's View (The W.C.T. Seminary - February 2000) -- Erik W. Shaffer
Equipment Updates
Book Review: "Bird Management Field Guide: A Comprehensive Manual for Preventing and Resolving Pest Bird Problems" by Richard Kramer, Ph.D. (115pp, illustrated).
Woodstream Corp. Sold to Investment Group
Colorado Anti-Trap Measure Held Invalid
Moose, Motorcyclist Tangle
Eagle Bombards Car
Europe's Children Don't Know Wool from Cotton
Infected Cougar Shot in Oregon
Position Available: WILDLIFE BIOLOGIST - Bird Depredation Research, H. K. Dupree Stuttgart …

The Prairie Naturalist Volume 32, No.1 March 2000

The Prairie Naturalist

FRESHWATER MUSSELS (BIVALVIA: UNIONOIDEA) IN STREAMS OF NORTHWESTERN KANSAS ▪ S. M. Bergman, M. E. Eberle, and B. K. Obenneyer

PISCIVOROUS BIRD DEPREDATION AT NORTHERN MINNESOTA AQUACULTURE FACILITIES ▪ G. K. Bridgman, E. H. Rave, and J. M. Rafferty 17

EFFECTS OF MOWED TRAILS ON DEPREDATION OF ARTIFICIAL NESTS IN GRASSLAND ▪ D. J. Rosenblatt, J. J. Newton, and E . J. Heske

PLANT COMMUNITY PATTERNS ON UPLAND PRAIRIE IN THE EASTERN NEBRASKA SANDHILLS ▪ W. H. Schacht, J. D. Volesky, D. Bauer, A. J. Smart, and E. M. Mousel

AMERICAN BITTERN DEPREDATES SORA ▪ J. E. Austin, and M. …

State Of Tampa Bay 1999, Tampa Bay Regional Planning Council (Tbrpc), Agency On Bay Management

Reports

This is the thirteenth edition of the "State of Tampa Bay" Report. It has been prepared by the Agency on Bay Management and funded by the Tampa Bay Regional Planning Council. The Report's primary purpose is to inform our legislators and the general public about the projects and programs underway around Tampa Bay and in its watershed. Summaries of programs of Baywide significance have been contributed by our most important Bay stewards. Reports from several organizations and agencies recap their activities in 1999 and describe planned projects for 2000. Many of these are actually updates, as these entities have contributed …

Center For Sustainable Agricultural Systems Newsletter, March/April 2000

Center for Sustainable Agricultural Systems: Newsletter (1993–2000)

Contents:

Marketing Featured at NSAS Annual Meeting

Nebraska’s Future Agriculture: Innovative Producers Get More of the Consumer’s Food Dollar

New Proposal for National Organic Standards

130 Countries Finalize Trade Treaty on Biotech Food

NSAS Director Carusi to Wisconsin

OFRF Proposal Deadline July 15

USDA Ag Biotech Advisory Committee Formed

Alternative Ag Expo

Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, Volume 16, Number 3, March 2000, College Of Engineering And Computer Science, Wright State University

BITs and PCs Newsletter

A ten page newsletter created by the Wright State University College of Engineering and Computer Science that addresses the current affairs of the college.

Methyl-Substituted Dispiro-1,2,4,5-Tetraoxanes:  Correlations Of Structural Studies With Antimalarial Activity, Kevin J. Mccollough, James K. Wood, Walter Reed Army Institute Of Research, Yuxiang Dong, Jonathan L. Vennerstrom

Chemistry Faculty Publications

Two tetramethyl-substituted dispiro-1,2,4,5-tetraoxanes (7,8,15,16-tetraoxadispiro[5.2.5.2]- hexadecanes) 3 and 4 were designed as metabolically stable analogues of the dimethylsubstituted dispiro-1,2,4,5-tetraoxane prototype WR 148999 (2). For a positive control we selected the sterically unhindered tetraoxane 5 (7,8,15,16-tetraoxadispiro[5.2.5.2]hexadecane), devoid of any substituents. Tetraoxanes 3 and 4 were completely inactive in contrast to tetraoxanes 2 and 5. We hypothesize that the two inactive tetraoxanes possess sufficient steric hindrance about the tetraoxane ring due to the two additional axial methyl groups to prevent their activation to presumed parasiticidal carbon radicals by inhibiting electron transfer from heme or other iron(II) species. For each of the tetraoxanes 2-4, …

The Precautionary Principle In Australia: Policy, Law & Potential Precautionary Eias, Warwick Gullett

RISK: Health, Safety & Environment (1990-2002)

Dr. Gullet argues that environmental impact assessments are a logical vehicle for factoring the precautionary principle into large-project-approval processes.

Design, Synthesis, And Evaluation Of A Novel Serine Protease Inhibitor Based On Monocyclic Β-Lactams, Ian M. Paquette

All Theses And Dissertations

Serine proteases are a large family of proteolytic enzymes which utilize a serine residue as a reactive nucleophile in the active site. Some of the more common serine proteases are chymotrypsin, trypsin, thrombin, human leukocyte elastase (HLE), human cathepsin G, and human cytomegalovirus protease (HCMV protease). Unregulated serine protease activity has been implicated in several common ailments, including rheumatoid arthritis, emphysema, pancreatitis, atherosclerosis, cystic fibrosis, and Alzheimer’s disease. Since serine proteases are responsible for the onset of such a wide range of diseases, there is an equivalent need for a large library of synthetic serine protease inhibitors to selectively counteract …

Modeling The Growth Dynamics Of Antarctic Krill Euphausia Superba, Eileen E. Hofmann, Cathy M. Lascara

CCPO Publications

A time-dependent, size-structured, bioenergetically based model was developed to examine the growth dynamics of Antarctic krill Euphausia superba 2 to 60 mm in size. The metabolic processes included in the model are ingestion, a baseline respiration, respiratory losses due to feeding and digestion, and an activity-based respiration factor. The total of these processes, net production, was used as the basis for determining the growth or shrinkage of individuals. Size-dependent parameterizations for the metabolic processes were constructed from field and laboratory measurements. Environmental effects were included through time series of pelagic phytoplankton concentration that were derived from data sets collected west …

A Neural Network Solution To Predicting Wind Speed At Cape Canaveral’S Atlas Launch Pad, Kenneth P. Cloys

Theses and Dissertations

This thesis demonstrates the potential for using time-delay neural networks to provide Launch Weather Officers (LWOs) at 45th Weather Squadron (45 WS) with advance warning of wintertime (November-March) peak wind speeds at the Atlas launch pad. The 45 WS provides weather support to the United States space program at Cape Canaveral Air Station, NASA's Kennedy Space Center, and Patrick Air Force Base. Due to the complex wintertime environment produced by the effects of friction and instability, 45 WS LWOs consider wintertime launch pad winds their toughest forecast challenge. Neural networks were developed, trained, and tested using observations of wintertime peak …

Modeling The Effect Of Nonlinear And Rate-Limited Sorption On The Natural Attenuation Of Chlorinated Ethenes, Peter P. Feng

Theses and Dissertations

Chlorinated solvents like tetrachloroethene (PCE) and trichloroethene (TCE) are the most common detected groundwater contaminants at Department of Defense installations in the United States. Unfortunately, technologies conventionally used to remediate chlorinated solvent-contaminated groundwater often fall short of achieving regulatory goals. Natural attenuation of chlorinated solvents offers an alternative remediation strategy that may achieve goals. However, the processes involved with natural attenuation are not fully understood, and this lack of understanding has hindered acceptance of natural attenuation by regulatory agencies. This study involved use of a numerical model that incorporated the physical, chemical, and biological processes thought to be relevant to …