Physical Sciences and Mathematics Commons^™

The Probe, Issue 175 – April 1997

The Probe: Newsletter of the National Animal Damage Control Association

Building a BASH Program* ("BASH stands for Bird Aircraft Strike Hazard), by Eugene LeBoeuf, Bird Strike Scientist, HQ Air Force Safety Center, Kirtland AFB, New Mexico, and President, NADCA
Video Review: Pocker Gopher Trapping by Ken Carver

More Abstracts Published at the 3rd Annual Conference of The Wildlife Society
Social and economic assessment of black bear damage in coastal North Carolina, by Robert C. Maddrey and M.R. Pelton
Options for wildlife contraception in California, by Terry M. Mansfield
Cooperative beaver management in the Riding Mountain National Park region, by Constance E.L. Menzies, Richard K Baydack, and Jack E. DuBois
Wildlife …

The Carnot Heterogeneous Database Project: Implemented Applications, Munindar Singh, Phil Cannata, Michael N. Huhns, Nigel Jacobs, Tomasz Ksiezyk, Kayliang Ong, Amit P. Sheth, Christine Tomlinson, Darrell Woelk

Kno.e.sis Publications

The Carnot project was an ambitious research project in heterogeneous databases. It integrated a variety of techniques to address a wide range of problems in achieving interoperation in heterogeneous environments. Here we describe some of the major implemented applications of this project. These applications concern(a) accessing a legacy scientific database, (b) automating a workflow involving legacy systems, (c) cleaning data, and (d) retrieving semantically appropriate information from structured databases in response to text queries. These applications support scientific decision support, business process management, data integrity enhancement, and analytical decision support, respectively. They demonstrate Carnot‘s capabilities for (a) heterogeneous query processing, …

Characterizing A Portable Subset Of Behavioral Vhdl-93, Krishnaprasad Thirunarayan, Robert Ewing

Kno.e.sis Publications

Goossens defined a structural operational semantics for a subset of VHDL-87 and proved that the parallelism present in VHDL is benign. We extend this work to include VHDL-93 features such as shared variables and postponed processes that change the underlying semantic model. In the presence of shared variables, nondeterministic execution of VHDL-93 processes destroys the unique meaning property. We identify and characterize a class of portable VHDL-93 descriptions for which unique meaning property can be salvaged. Our specification can serve as a correctness criteria for a VHDL-93 simulator.

Structure And Perpendicular Magnetization Of Fe/Ni(111) Bilayers On W(110), D. Sander, Axel Enders, C. Schmidthals, J. Kirschner, H. L. Johnston, C. S. Arnold, David E. Venus

Axel Enders Publications

Scanning tunneling microscopy and low energy electron diffraction show that high quality fcc Ni(111) films can be prepared on W(110). The subsequent coverage of this Ni template by monolayers of Fe leads to a Fe/Ni bilayer with striking magnetic properties. The Fe cap layer induces a spin reorientation of the easy axis of magnetization from in-plane to perpendicular to the film, as checked with the magneto-optic Kerr effect. At higher Fe coverages, an in-plane magnetization of the bilayer is found, which is proposed to be caused by the fcc to bcc transition in the Fe layer.

Reconstruction Of Wetland Hydrology Dynamics Using Tree Rings, Allan P. Hascall Iii

Dissertations

Increment core samples were collected and examined to test the hypothesis that the history of punctuated or intermediate-term changes in wetland soil-moisture conditions can be reconstructed from the annual growth-ring record of trees. The hypothesis is based on plant physiological principles that indicate a relationship between water surplus stress and impaired physiological activity that could lead to reduced growth.

Sampling sites were selected for their ostensible historic hydrologic variability and the availability of documentation of hydrologic disturbances. A conceptual model was developed by which trees were sampled along a hydrotopographic gradient for comparison of radial stem growth in uplands versus …

Acid Mine Drainage And Its Effects On Salamander Assemblages In Cumberland Plateau Streams Of The North Chickamauga Creek Watershed, Tennessee, Melissa Combs

Honors Theses

In Appalachia's coal mining regions, acid mine drainage (AMD) has contributed to the widespread degradation of stream ecosystems. Salamanders are common inhabitants of healthy headwater streams and because of their permeable skins are excellent indicators of ecosystem intergrity. Hence, we investigated the potential effects of AMD on the species richness and relative abundance of aquatic salamanders in selected stream reaches (sites) of the North Chickamauga Creek (NCC) system, Tennessee. Specimens were collected by kick-net sampling with a 500um mesh dip net and/or electroshocking at four AMD-impacted sites (pH< 5.6) and two reference sites pH> 6.2), May-July 1996. Species richness was similarly low at reference sites, 2 …

Optical And Magneto-Optical Properties Of Mnpt3 Films (Abstract), Segate Corporation, Pittsburgh, Pa, J. N. Hilfiker, Renat F. Sabirianov, Sitaram S. Jaswal, Roger D. Kirby, John A. Woollam

Physics Faculty Publications

Optically thick films of MnPt₃ were prepared by magnetron sputtering onto quartz substrates. Postdeposition annealing at 850 °C resulted in highly textured (111) films with the L1₂ (Cu₃Au) structure. MnPt₃ films are ferromagnetic with a Curie temperature of 380 °C, and they show large magneto-optical effects in the visible.^1,2 These films also show a high degree of long-range order. The diagonal components of the dielectric tensor were determined using variable angle spectroscopic ellipsometry measurements over the spectral range 1.2–2.4 eV. Magneto-optic Kerr rotation and ellipticity measurements were made at near normal incidence over the …

Conformation Of Interacting Polymer Chains: Effects Of Temperature, Bias, Polymer Concentration, And Porosity, Grace M. Foo, Ras B. Pandey

Faculty Publications

The conformations of interacting polymer chains driven by a biased field in heterogeneous media are studied using Monte Carlo simulations in three dimensions. In addition to excluded volume, a nearest-neighbor interaction is considered with polymer-polymer repulsion and polymer-solvent attraction. Two types of heterogeneous media are considered: (i) a homogeneous-annealed system consisting of mobile polymer chains and solvents and (ii) quenched porous media, generated by adding a random distribution of quenched barriers. Effects of polymer concentration (p), bias (B), temperature (T), and porosity (p_s) on the magnitude of the radius of gyration (R_g) of the …

The Eldorado Landfill: A Case Study, Heather A. Nash

UNLV Theses, Dissertations, Professional Papers, and Capstones

In 1995, Boulder City bought from the federal government 167 square miles of land in the Eldorado Valley which is located approximately seven miles west of the city. Soon afterward, the current landfill in Boulder City began accepting construction waste from Las Vegas. The large dump trucks had to travel through Boulder City on route to the landfill. In doing this they passed through three school zones and residential areas. When residents began complaining about the trucks, the Boulder City City Council began investigating various ways to solve the problem. The solution they adopted was to construct a new landfill …

Optimization Of Plasmas For Recombination-Pumped Short-Wavelength Lasers, Michael James Murphy , '98, Catharine Glasheen , '97, Frank Moscatelli, T. D. Donnelly

Physics & Astronomy Faculty Works

We report on experiments investigating the optimization of laser-ablated plasmas which are used to produce recombination-pumped, short-wavelength lasers. We evaluate the density of electrons and neutral atoms in laser ablated lithium and carbon plasmas as a function of time and distance away from the ablated target surface. We use an interferometric technique which can reveal information about the temperature of the plasma electrons. We find that the cold electrons which result in gain in recombination-pumped lithium lasers on the Lyman-cr transition are produced by the high-intensity pump pulse rather than the lower intensity ablating pulse.

Ua66/10/2 Alumni Newsletter, Wku Mathematics

WKU Archives Records

Alumni newsletter created by and about the WKU Mathematics department.

Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, Volume 13, Number 4, April 1997, 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.

Arkansas Soil Fertility Studies 1996, Wayne E. Sabbe

Arkansas Agricultural Experiment Station Research Series

No abstract provided.

On The Automatic Generation Of Network Protocol Simulators, Andrew Chen

Honors Theses

Computers communicate with each other over various communication networks via a language known as a protocol. The design of the protocol can have a significant impact on the efficiency (and effectiveness) of the network. Because building an actual network to test the performance (and reliability) of a new protocol is rather expensive and time consuming, there is an interest in simulating network protocols in order to determine how efficient the communication network is. We are therefore interested in automatically generating simulators that could measure the performance of the new protocols. There are two main parts to this project. The first …

Parallel Programming, Peter Dailey

Honors Theses

The speed of technology is always increasing, especially in the field of computing. Unfortunately, the size of the problems needing to be solved are also growing in many areas. In order to keep up with this, parallel computing has become an important research area. The term parallel computing essentially refers to using multiple processors cooperating to solve a problem. For certain problems this can speed up the solution by a factor ofN, the number of processors being used. There are algorithms, for which there is no speed increase due to certain dependencies.

Carrion Seeking In Brown Tree Snakes: Importance Of Olfactory And Visual Cues, John A. Shivik, Larry Clark

United States Department of Agriculture Wildlife Services: Staff Publications

We performed field experiments to examine brown tree snake (Boiga irregularis) attraction to carrion. These snakes were attracted to carrion and entered traps baited with dead mice as readily as traps baited with live mice. Using the cues arising from both live and dead prey, we examined the relative importance of visual and chemical cues to brown tree snakes. With carrion lures, chemical cues alone were sufficient for attracting and capturing snakes, but with live prey lures visual cues were required to attract and capture brown tree snakes. Our study presents the first experimental field evidence showing carrion …

Search For Neutrinoless Τ Decays: Τ→Eγ And Τ→Μγ, K. W. Edwards, Kenneth A. Bloom, Cleo Collaboration

Kenneth Bloom Publications

A search for the lepton-family-number-violating decays τ→eγ and τ→μγ has been performed using CLEO II data. No evidence of a signal has been found and the corresponding upper limits are B(τ→eγ) < 2.7X10^-6 and B (τ→μγ),3.0 X 10^-6 at 90% C.L.

The John Muir Newsletter, Spring 1997, The John Muir Center For Regional Studies

Muir Center Newsletters (1981-2015)

JOHN WgW Volume 7, Number 2 NEW MUIR Spring 1997 X I 4 J^,AN EPISODE IN THE YOSEMITE: by Frank E. Buske copyright @ 1989,1991, by Frank E. Buske (Editor's note: Dr. Frank Buske, emeritus professor and former Chair of the English Department at the University of Alaska, Fairbanks, now lives in Tucson, Arizona. This paper was presented at the 1990 John Muir Conference at UOP, and is published here, along with letters from a private collection, with the author's permission.) ('•< Muir spent the winter of 1873-75 at the McChesney home in land, having come down from his beloved mountains to spend time putting into words some of the observations he had made • ■ nig the trees and the glaciers and on the ■ - les. Mrs. Jeanne Carr and others of his I «ls had, for a long time, been * •imaging him to do more writing; they HHgested that there was a market for his j I les and a need for him to set down his ilf|overies while they were still fresh in his mind. Mrs. McChesney, in a later reminiscence, described Muir as "dressed gi»iei ally in what we call now negligee, i.e., he wore a blue flannel shirt, but was never : without a sprig of some green plant as an-S*0 jjpment." Muir's apparel would be appropriate for ij§krnd of life he most enjoyed. He disliked lifting to dress for any formal occasion and hied to avoid any social gathering that would HHuire clothing and behavior that were not comfortable to him. Although he had uently written of his loneliness, sped1 w.f t enviously about his relatives and ids who had married and were raising families, he seems to made no effort to alter his own bachelor status during that Winter in the Bay Area. Mrs. J "• ' Carr The subject of John Muir and his relationship with women is interesting to ponder, and is a topic that has received a good deal of attention and even more misinformed speculation. Some verses that he wrote before this time, highly critical of young women, their appearance and the way they dressed, prompted his friend, Bradley Brown, to write the eighteen-year old Muir, "Excuse me, John, but perhaps unreciprocated love was the cause of your rhyming against the sweet little creatures. To love is painful, that is true. Not to love is painful, too. But oh! It gives the greatest pain to love and not to be loved again." The subject of Muir's poem may well have been imaginary but Brown's observations can certainly be considered prescient. At twenty-two, in Prairie du Chien, Wisconsin, working with ice-boat inventor Wiard, John Muir wrote his brother, David, telling him of the people he was meeting. David, very much a ladies' man, replied, "I would like very well to hear that piano and Miss E.P. (excuse me, John) playing on it." Miss E.P. was, of course, Emily Pelton, niece of the proprietors of the Mandell House where Muir was living. In December of that same year, John Muir wrote his sister, Sarah, and her husband, David Galloway, of an occasion which shows a rather vivid picture of his social skills: UNIVERSITY OR page 1 (continued on page 3) PACIFIC

NEWS NOTES: JOHN MUIR CENTER PUBLICATION PROGRAM The John Muir Center announces the continuation of its series of …

40Ar/39 Ar Geochronology Of The Lowland Creek Volcanic Field And Its Temporal Relations With Other Eocene Volcanic Areas, Vladimir Olegovich Ispolatov

OES Theses and Dissertations

Exposures of the Eocene Lowland Creek Volcanics (LCV) cover an area of 2000 km² in southwestern Montana, and consist of basal elastic deposits, felsic tuffs, and felsic and intermediate lavas with an aggregate thickness of about 2 km. New ⁴⁰Ar/³⁹Ar dates show that volcanic activity lasted for at least 4.2 million years (52.7- 48.5 Ma), or even longer (4.5-4.7 million years: from 53.0-53.2 Ma to 48.5 Ma). During evolution of the volcanic field, early explosive volcanism was gradually replaced by extrusive activity. During the transition period (52.7-51.5 Ma), the two volcanic styles coexisted.

The evolution of …

Biostratigraphic Analysis Of Southern Florida's Plio-Pleistocene Shell Beds, Dalton L. Rasmussen

OES Theses and Dissertations

Four molluscan assemblage zones in southern Florida corresponding to the Pinecrest Sand Member of the Tamiami Formation, and the Caloosahatchee, Bermont and Fort Thompson shell beds were identified following quantitative and qualitative analyses of the fossil molluscan fauna. Twenty-eight bulk sediment samples collected from 16 localities across southern Florida were processed for fossil material, and yielded nearly 60,000 specimens belonging to 311 species. A Q-mode cluster analysis compared sediment samples on the basis of 188 species whose abundances had been converted to binary presence-absence form. The cluster analysis was run four times using the Jaccard and Dice similarity coefficients as …

Microzooplankton Dynamics In Lower Chesapeake Bay And Its Major Tributaries, Gyung Soo Park

Biological Sciences Theses & Dissertations

This study identified the temporal and spatial variability of microzooplankton density and biomass at 14 stations located within Chesapeake Bay and four rivers. Microzooplankton are defined as those heterotrophic organisms which range from 20 to 200 $\mu$m in size, and in this study were mainly composed of copepod nauplii, rotifers, and ciliates. Ciliates were the most abundant microzooplankton, comprising more than 90% of the total density, with copepod nauplii representing approximately 50% of the total microzooplankton biomass (carbon content). Rotifers contributed less than 5% for both density and biomass of the total microzooplankton.

Maximum ciliate abundance occurred from spring to …

Designing A High-Quality Network: An Application-Oriented Approach, Sudheer Dharanikota

Computer Science Theses & Dissertations

As new computer network technologies emerge, the application designers and the application users expect an increasing level of quality of service from them. Hence, it is a common practice in the newer technologies to provide more Quality of Service (QoS) components. Until now, these QoS solutions have been both network-technology specific and network-oriented solutions. In this thesis, we present an application-oriented approach to design a high quality network which is independent of the underlying communication technology. In this thesis, we propose a QoS architecture to "provide predictable performance to the end-to-end application users in a high quality networking environment." In …

Middle Shoreface Intervals: Evidence Of Barred Nearshore Systems In He Stratigraphic Record, James V. Gravette

OES Theses and Dissertations

An interpretation for middle shoreface (MSF) intervals was developed by comparing MSF intervals from the Upper Cretaceous (Campanian) Blackhawk Formation, east-central Utah, with conceptual models proposed for modern nearshore areas. Specifically, MSF intervals identified within the Sunnyside Member were compared with MSF intervals identified within the Spring Canyon (Kamola and Van Wagoner, 1995) and the Aberdeen (Kamola, unpublished data) members.

A comparison of MSF interval data revealed that MSF intervals occur stratigraphically between upper and lower shore face deposits, disrupting the standard vertical succession for nearshore marine deposits (consisting of offshore, lower shore face, upper shore face, and foreshore deposits). …

Elevation As A Control Of Boulder Stream Formation In The Blue Ridge Province Of Virginia, Marc D. Zamkotowicz

OES Theses and Dissertations

Within four study areas in the Blue Ridge Mountains of Virginia, boulder streams formed by periglacial processes carpet the bottoms of most high-altitude first-order valleys. The geomorphic indicators of periglacial formation in these long, linear accumulations of bouldery colluvium - the presence of vertical clasts, gradational upper contacts with talus deposits, confinement within valleys, and hump-like cross sectional profiles - were present in all areas mapped and in most individual boulder streams. The minimum critical elevation for boulder stream formation increases from north to south across Virginia, from 150 m in elevation in northern Virginia to 1500 m in southwestern …

Development Of Solid Phase Microextraction Methods For Contraband Drugs, Vangielynn Cruz Tersol

Chemistry & Biochemistry Theses & Dissertations

The objective of this study is to develop analytical methods for studying contraband drugs at nanogram levels and to demonstrate the utility of the methods. A method which combines solid phase microextraction with ion mobility spectrometry (SPME-IMS) was developed. The SPME-IMS method was used as a rapid screening tool in studying the chemistry of cocaine HCI, heroin HCI, and heroin freebase on surfaces. The total time for sample preparation, reaction, and analysis is approximately seven minutes. Another method that was developed is one that combines solid phase microextraction with gas chromatography (SPME-GC) for the quantitative analysis of cocaine freebase and …

Development Of A Fluorescent Indicator For Inorganic Monochloramine, Xiaojun Dong Zou

Chemistry & Biochemistry Theses & Dissertations

Current methods used to determine combined residual chlorine cannot distinguish between inorganic monochloramine (NH₂Cl) and organic chloramines. Studies described in this thesis were carried out to develop a novel method of determining the concentration of inorganic monochloramine in aqueous solutions. Based on the observation that the reaction of 3-formyl-1-methylpyridinium chloride (3FMPCl) with NH₂Cl produces a solution which is fluorescent, experiments were conducted to characterize the reaction and optimize the experimental conditions. Using the finalized protocol, NH₂Cl measurements were made in the presence and absence of organic amines and compared with a commonly used N, …

Resource Law Notes Newsletter, No. 40, Spring Issue, Apr. 1997, University Of Colorado Boulder. Natural Resources Law Center

Resource Law Notes: The Newsletter of the Natural Resources Law Center (1984-2002)

No abstract provided.

Influence Of Physics On The Distribution Of Ichthyoplankton Across The Chesapeake Bay Plume, Christian S. Reiss

OES Theses and Dissertations

Most marine fish have retained pelagic larval stages that are spawned away from juvenile habitats. Physical and biological processes on a number of scales may affect larval survival. Mesoscale features like estuarine or riverine plumes and fronts are thought to affect larval survival by transporting larvae to juvenile habitats or by retaining larvae in favorable developmental habitats. It is likely that these features are major contributors in the regulation of shelf-spawned estuarine-dependent taxa.

This study examined how physical oceanographic features affected the spatial distribution of ichthyoplankton across the Chesapeake Bay Plume. Larval surveys were conducted across the shelf and within …

Ecology Of The Early Life History Of The Caribbean Spiny Lobster, Panulirus Argus: Recruitment, Predation, And Habitat Requirements, Charles A. Acosta

Biological Sciences Theses & Dissertations

Recruitment variability of the early life history stages of marine benthic organisms can have profound consequences on population dynamics. I studied factors affecting recruitment success of postlarvae and early juveniles of the Caribbean spiny lobster. I examined patterns in postlarval supply, investigated wind forcing as a potential transport mechanism for recruiting postlarvae, and quantified predation on postlarvae in south Florida, USA. In an eight-year time series, spiny lobster postlarval supply occurred year-round between the new and first quarter lunar phases. The major annual peak occurred around March corresponding to spawning activity ten months earlier, and a smaller non-seasonal peak occurred …

Enhanced Coupling To Microsphere Resonances With Optical Fibers, A. Serpengüzel, S. Arnold, G. Griffel, James A. Lock

Physics Faculty Publications

Morphology-dependent resonances (MDR's) of polystyrene microspheres were excited by an optical fiber coupler. For optical elimination of the air-cladding interface at the optical fiber coupler surface, the microsphere was immersed in an index-matching oil. MDR's were observed, even though the relative refractive index between the microsphere and the oil was only 1.09. The observed MDR spectra are in good agreement with the generalized Lorenz-Mie theory and the localization principle. The scattering efficiency into each MDR is estimated as a function of the impact parameter by means of generalized Lorenz-Mie theory. (C) 1997 Optical Society of America.