Physical Sciences and Mathematics Commons^™

Ceg 751-01: Microprocessors Ii, Jack Jean

Computer Science & Engineering Syllabi

No abstract provided.

Ceg 790-01: Introduction To Scientific Visualization, Thomas Wischgoll

Computer Science & Engineering Syllabi

No abstract provided.

Ceg 260-01: Digital Computer Hardware/Switching Circuits, Meilin Liu

Computer Science & Engineering Syllabi

We will discuss and cover basic digital, combinational and sequential logic systems. Labs will be used to gain valuable practical experience in implementing elementary circuits and logic designs.

Initial Mass Function Effects On The Colour Evolution Of Disk Galaxies, P. Westera, M. Samland, Stefan Kautsch, R. Buser, K. Ammon

Chemistry and Physics Faculty Articles

Aims. In this work, we want to find out if the IMF can be determined from colour images, integrated colours, or mass-to-light ratios, especially at high redshift, where galaxies cannot be resolved into individual stars, which would enable us to investigate dependencies of the IMF on cosmological epoch.

Methods. We use chemo-dynamical models to investigate the influence of the Initial Mass Function (IMF) on the evolution of a Milky Way-type disk galaxy, in particular of its colours.

Results. We find that the effect of the IMF on the internal gas absorption is larger than its effect on …

Is That A Fish In Your Ear? A Universal Metalanguage For Multimedia, Joseph Thomas-Kerr, I. Burnett, C. H. Ritz, S. Devillers, D. De Schrijever, R. Van De Walle

Faculty of Informatics - Papers (Archive)

Universal Multimedia Access promises to adaptively deliver multimedia content to users according to their needs?whether it's their device, context, or preferences. Central to UMA is the development of metadata standards for describing multimedia resources to allow their adaptation. In this article, the authors report on the development of the Bitstream Syntax Description Language (BSDL) and describe applications for scalable content adaptation, format independent streaming, and delivery and configurable media coding.

The Planet, 2007, Spring, Shawn C. Query, Huxley College Of The Environment, Western Washington University

The Planet

No abstract provided.

Classification Of Chemical Substances Using Particulate Representations Of Matter: An Analysis Of Student Thinking, Marilyne Stains, Vicente Talanquer

Chemistry Department: Faculty Publications

We applied a mixed-method research design to investigate the patterns of reasoning used by novice undergraduate chemistry students to classify chemical substances as elements, compounds, or mixtures based on their particulate representations. We were interested in the identification of the representational features that students use to build a classification system, and in the characterization of the thinking processes that they follow to group substances in different classes. Students in our study used structural and chemical composition features to classify chemical substances into elements, compounds, and mixtures. Many of the students’ classification errors resulted from strong mental associations between concepts (e.g., …

Stalked Crinoid Locomotion, And Its Ecological And Evolutionary Implications, Tomasz K. Baumiller, Charles G. Messing

Marine & Environmental Sciences Faculty Articles

In the past two decades, much direct evidence has been gathered on active crawling by stalked crinoids, a group generally thought to be sessile. Detailed descriptions of crawling mechanics of isocrinids in aquaria revealed only exceedingly slow movements (~0.1 mm sec^-1). Crawling at such speeds severely restricted the range of roles that this behavior could play in stalked crinoid biology and, consequently, in its potential impact on their ecology and evolutionary history. Here, we provide evidence collected in situ by submersible near Grand Bahama Island at a depth of 420 m for a different mode of crawling in …

A Spectral Order For Infinite Dimensional Quantum Spaces: A Preliminary Report, Joe Mashburn

Mathematics Faculty Publications

In 2002 Coecke and Martin created a Bayesian order for the finite dimensional spaces of classical states in physics and used this to define a similar order, the spectral order on the finite dimensional quantum states. These orders gave the spaces a structure similar to that of a domain. This allows for measuring information content of states and for determining which partial states are approximations of which pure states. In a previous paper the author extended the Bayesian order to infinite dimensional spaces of classical states. The order on infinite dimensional spaces retains many of the characteristics important to physics, …

Extensions Of Local Domains With Trivial Generic Fiber, William Heinzer, Christel Rotthaus, Sylvia Wiegand

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

We consider injective local maps from a local domain R to a local domain S such that the generic fiber of the inclusion map R -> S is trivial, that is P R (0) for every nonzero prime ideal P of S. We present several examples of injective local maps involving power series that have or fail to have this property. For an extension R -> S having this property, we give some results on the dimension of S; in some cases we show dim S = 2 and in some cases dim S = 1.

Droughtscape- Spring 2007, The National Drought Mitigation Center

Droughtscape, Quarterly Newsletter of NDMC, 2007-

2007 Spring Drought Outlook & Winter Summary

VegDRI Expands to 15 States, Refines Views

DroughtScape

State Spotlight: Utah

International Panel Foresees Drought as Part of Climate Change

NIDIS Portal Advancing

Impacts Of Urban Coyotes On People And Pets In New York State, Louis T. Berchielli

Wildlife Damage Management Conference Proceedings

Coyotes (Canis latrans) are currently common in most of New York State with an apparent increase of coyotes in urban areas. Coyotes can potentially cause a variety of effects and impacts. Urban coyotes can impact the general public by causing safety concerns for children and pets and by causing feelings of grief for attacked and missing pets. Politicians and government agencies can be impacted by calls from constituents to “do something”. Licensed Nuisance Wildlife Control Operators can be positively impacted by significant business opportunities. Pets are impacted by coyote diseases and by being chased and consumed by coyotes. …

Management Of Urban Coyotes And Attacks In Green Valley, Pima County, Arizona, Christopher D. Carrillo, Jim Schmidt, David Bergman, Gabriel Paz

Wildlife Damage Management Conference Proceedings

Coyote (Canis latrans) attacks on humans, once thought to be rare, have increased in frequency over the past decade. In Arizona, the number of wildlife human encounters has increased as our urban environments have expanded into the coyote’s natural environment. Coyotes have learned to utilize drip irrigation, pet food, household refuse, and pets as prey. The problem of potential coyote attacks is magnified when people intentionally feed coyotes. In some situations, coyotes have begun to act aggressively toward humans, chasing joggers/walkers, confronting people walking their dogs, and stalking small children. People who live in areas where coyotes are …

The Urban Coyote Control Program, Robert J. Erickson

Wildlife Damage Management Conference Proceedings

This paper discusses practical considerations of conducting control of problem coyotes (Canis latrans) in urban and suburban settings, from the standpoint of a private wildlife control operator. The author provides advice on dealing with municipalities, the media, the public, and with clientele. Also discussed are appropriate tools and materials that can be effective in such settings, and effective strategies for dealing with suburban coyote problems.

Urban Coyotes: Some Summary Thoughts, Jeffrey S. Green

Wildlife Damage Management Conference Proceedings

The Animal and Plant Health Inspection Service, Wildlife Services program provides services on request to help alleviate damage by wildlife to agriculture, natural resources and human health and safety. Such services may also involve dealing with coyotes (Canis latrans) in urban settings. Resolving problems with urban coyotes requires a mix of suitable methods but perhaps more importantly, an understanding of complex social and cultural issues surrounding people and wildlife.

Suitable And Effective Coyote Control Tools For The Urban/Suburban Setting, Alan A. Huot, David L. Bergman

Wildlife Damage Management Conference Proceedings

Increases in the incidence of human conflict with coyotes in urban/suburban environments fuel a need for suitable coyote tools and methods to reduce these conflicts. Traditional tools, such as foothold traps and snares, face continued problems of acceptability in urban/suburban situations because of public anxiety about the risks to non-targets as well as other animal welfare concerns. We review the major categories of methods and tools used to prevent or reduce urban coyote-human conflicts, including exclusion (fencing), environmental and habitat modification, capture devices (traps, snares, and related devices), and shooting. We briefly discuss future technologies current under development: fertility control, …

Controlling Coyotes In An Urban Environment – Effective Evaluation Of Requests By The General Public For Control Services, Tim J. Julien

Wildlife Damage Management Conference Proceedings

(Canis latrans) in urban/suburban environments continues to increase countrywide. These incidents have created a need for a systematic means of evaluating the perceived need for control to determine first if control is necessary and would it be effective in solving the problem. Generally we have found the public is uninformed and surprised by their first sighting or encounter with coyotes. We have taken an approach that allows us to evaluate the clients concerns and enable us to make recommendations to them on possible control methods that might be effective, practical, and economically feasible for any given situation. Most …

Operational Challenges Of Solving Urban Coyote Problems In Southern California, Dennis L. Orthmeyer, Terrance A. Cox, John W. Turman, Joe R. Bennett

Wildlife Damage Management Conference Proceedings

We present challenges, methodologies, and solutions related to mitigating urban coyote (Canis latrans) problems in southern California. The physical environment, the diverse urban structure (green belts and parks) with its abundant food resources which support high coyote densities, combined with the human component (behavior, urbanization, politics) create operational challenges. The increasing disconnect between humans and wildlife, coyote emigration/immigration into the increasing rural/urban interface, and coyote life cycles that occur exclusively in urban environments, all contribute to the increase in coyote-human conflicts. California’s southern counties’ human population has expanded 13% over the period from 1990-2000 and is projected to …

Bad Dogs: Why Do Coyotes And Other Canids Become Unruly?, Robert H. Schmidt, Robert M. Timm

Wildlife Damage Management Conference Proceedings

We summarize the behavior of several species of canids (coyotes, dingoes, and gray wolves) in relation to their habituation to humans and to human food sources. Striking parallels exist between coyotes and other wild canids in terms of the inclination of individual animals to act aggressively toward humans and even attack, once they have come to associate humans with food. We describe the stages of coyotes’ behavioral adaptation to suburban ecosystems, listing 7 steps toward increasing habituation, which can be used as action thresholds for invoking active coyote management or removal efforts. We consider the hypothesis that coyotes may regard …

Complexities Of Urban Coyote Management: Reaching The Unreachable, Teaching The Unteachable, And Touching The Untouchable, Robert H. Schmidt

Wildlife Damage Management Conference Proceedings

Urban coyote (Canis latrans) management is often complicated, but the technical portion of any management program is only one part of the equation. The use of lethal (traps, snares, shooting, toxicants) and non-lethal (exclusion, guard animals, husbandry practices, harassment) coyote management strategies can be successful, less than successful, or not successful depending on the appropriate match of technical skill and technology available in a particular situation. However, technical sophistication is only a portion of the management dilemma. Issues of policy, law, politics, and economics, as well as human values, attitudes, and ethics play an obvious and profound role …

A Broad Perspective On Current And Future Research On Urban Coyotes, John A. Shivik, Kathleen A. Fagerstone

Wildlife Damage Management Conference Proceedings

A change in wildlife management appears to be occurring. Previous efforts needed to be focused on producing more game species or endangered animals; now, however, tools and training must resolve issues of overabundance and conflict with predators, especially species such as coyotes (Canis latrans) in urban areas. Urban conflicts with coyotes may be growing because of urban development of land and human intrusion, but alteration of habitats that attract coyotes is also a likely factor. Research that will describe basic coyote biology in urban areas will be needed, but managers will also need applied research and development of …

A History Of Urban Coyote Problems, Robert M. Timm, Rex O. Baker

Wildlife Damage Management Conference Proceedings

We summarize previously published information on coyote attacks on humans in North America. This problem has developed primarily in urban and suburban areas of southern California since the early 1970s, and the frequency of attacks and other human safety incidents is increasing. Similar attacks are now known from at least 18 states in addition to California and from 4 Canadian provinces, with the majority of attacks occurring since the early 1990s. We review early explorers’ and settlers’ accounts of coyotes in the Los Angeles area, as well as development of coyote control programs during the 20th century. We also describe …

The Co-Existing With Coyotes Program In Vancouver, B.C., Robyn E. Worcester, Robert Boelens

Wildlife Damage Management Conference Proceedings

When coyotes first arrived in Vancouver, BC they brought surprise, myths, and concern to the public as they grew comfortable in our city parks, golf courses, and neighborhoods. The Co-existing with Coyotes (CWC) program was created in 2001 and is based on the recommendations of a research project about public perceptions on urban coyotes. This program aims to reduce conflict between coyotes, pets, and people by providing information to both targeted and general audiences as well as providing a direct response to individual coyotes that are starting to, or are displaying, behavior of concern. The general public is reached through …

Sequence Stratigraphic Controls On Synsedimentary Cementation And Preservation Of Dinosaur Tracks: Example From The Lower Cretaceous, (Upper Albian) Dakota Formation, Southeastern Nebraska, U.S.A., Preston Lee Phillips Jr., Greg A. Ludvigson, R. Matthew Joeckel, Luis A. González, Robert L. Brenner, Brian J. Witzke

Department of Earth and Atmospheric Sciences: Faculty Publications

A thin cemented sandstone bed in the Upper Albian Dakota Formation of southeastern Nebraska contains the first dinosaur tracks to be described from the state. Of equal importance to the tracks are stable-isotope (C, O) analyses of cements in the track bed, especially in the context of data derived from generally correlative strata (sandstones and sphaerosiderite-bearing paleosols) in the region. These data provide the framework for interpretations of paleoenvironmental conditions, as well as a novel approach to understanding mechanisms of terrestrial vertebrate track preservation.

High minus-cement-porosity (> 47%) and low grain-to-grain contacts (~2.5) in the track bed indicate early (pre-compaction) …

The Effect Of Sculpin Presence On Benthic Macroinvertebrate Abundances In Chuckanut Creek, Washington, Sam Stoner

WWU Honors College Senior Projects

Sculpins are one of the most abundant fishes in Pacific coastal streams and lakes, but they remain understudied despite potentially significant impacts to stream ecology. The poor swimming ability of sculpins limits their range by inhibiting passage of barriers passable to other fishes. Sculpins are voracious eaters and feed primarily on stream invertebrates. By sampling invertebrates in reaches of stream above and below a sculpin barrier, this study examined the impact sculpin presence had on the stream invertebrate community. Invertebrates were sampled in riffles using a Serber sampler (n = 4). The results showed that the presences of sculpins had …

Book Review: A Love Of Discovery: Science Education—The Second Career Of Robert Karplus., Robert Fuller

Robert G. Fuller Publications

Robert Fuller has set out to collect in a single volume the most important works by Robert Karplus on science education. But rather than simply present the articles and writings in chronological order, the editor has grouped the papers in eight chapters, and each chapter begins with an essay written by someone who worked with Karplus. Most of these eight essays add depth and complexity to the papers and, for some, may be as valuable as the reprints.

Robert Karplus received his Ph.D. from Harvard in 1948 at the age of 21 and became a full professor at UC Berkeley …

Investigation Of Magnetic Field Profile Effects In Hall Thrusters, Oren Kornberg

Master's Theses - Daytona Beach

The purpose of this study was to show the relationship of different magnetic field profiles to the acceleration region length of a Hall thruster. The general transport equations were simplified and solved using a one-dimensional analysis. Some of the model assumptions include quasineutrality, Maxwellian electrons, and negligible thruster wall effects. The solved equation kept magnetic field as an input to the model for the analysis. The magnetic field was altered by changing the shape through the thruster, while keeping the maximum point fixed, and by shifting the profile, while keeping the shape fixed. Results indicate a strong correlation between the …

Chemical Abundances In An Agn Environment: X-Ray/Uv Campaign On The Markarian 279 Outflow, Nahum Arav, Jack R. Gabel, Kirk T. Korrista, Jelle S. Kaastra, Gerard A. Kriss, Ehud Behar, Elisa Constantini, C. Martin Gaskell, Ari Laor, C. Nalaka Kodituwakku, Daniel Proga, Masao Sako, Jennifer E. Scott, Katrien C. Steenbrugge

C. Martin Gaskell Publications

We present the first reliable determination of chemical abundances in an active galactic nucleus (AGN) outflow. The abundances are extracted from the deep and simultaneous Far Ultraviolet Spectroscopic Explorer (FUSE) and Hubble Space Telescope (HST ) STIS observations of Mrk 279. This data set is exceptional for its high signal-to-noise ratio, unblended doublet troughs, and little Galactic absorption contamination. These attributes allow us to solve for the velocity-dependent covering fraction and therefore obtain reliable column densities for many ionic species. For the first time, we have enough such column densities to simultaneously determine the ionization equilibrium and abundances in the …

Reliability -Aware Optimal Checkpoint /Restart Model In High Performance Computing, Yudan Liu

Doctoral Dissertations

Computational power demand for large challenging problems has increasingly driven the physical size of High Performance Computing (HPC) systems. As the system gets larger, it requires more and more components (processor, memory, disk, switch, power supply and so on). Thus, challenges arise in handling reliability of such large-scale systems. In order to minimize the performance loss due to unexpected failures, fault tolerant mechanisms are vital to sustain computational power in such environment. Checkpoint/restart is a common fault tolerant technique which has been widely applied in the single computer system. However, checkpointing in a large-scale HPC environment is much more challenging …

Cross Sections Spring 2007, Department Of Physics And Astronomy

Cross Sections

No abstract provided.