Physical Sciences and Mathematics Commons^™

Managing Bird Populations At An Incompatible Land Use Near An Airport: Dike 10b Confined Disposal Facility, Craig R. Hicks, Randy J. Outward, Jonathon D. Cepek, Thomas W. Seamans

Bird Strike Committee-USA/Canada Joint Annual Meeting: 9th (2007)

Many airports throughout the world have been built on or adjacent to bodies of water. Due to their location, they are often negatively impacted by wildlife attracted to surrounding areas such as harbors, arenas, beaches, and parks. These same lakes and rivers often serve as shipping channels that support the city to which the airport services. Such is the case at Burke Lakefront Airport (BKL) in Cleveland, Ohio. In 1998, the U.S. Army Corps of Engineers (USACE) constructed Dike 10B, a 64-acre confined disposal facility (CDF) adjacent to BKL to manage contaminated dredge materials removed from the shipping channels of …

Bird Strike Risk Assessment At A Proposed U.S. Navy Outlying Landing Field In Northeastern North Carolina, Greg Netti, Christine M. Sousa, Michael J. Begier, Robert C. Beason, J. Dan Cecchini

Bird Strike Committee-USA/Canada Joint Annual Meeting: 9th (2007)

In September 2003, U.S. Department of the Navy (the Navy) decided to homebase its carrier-based squadrons of Super Hornet aircraft at Naval Air Station (NAS) Oceana, in Virginia, and Marine Corps Air Station (MCAS) Cherry Point, in North Carolina. Prior to that decision, the Navy had determined that these squadrons would need an additional practice landing field, known as an outlying landing field (OLF), to support the number of Field Carrier Landing Practice (FCLP) operations that are part of the pre-deployment training cycle. The FLCP operations are low-level, “touch-and-go” flight patterns to train pilots for landing on aircraft carriers.

The …

Dead Bird Effigies: A Nightmare For Gulls?, Thomas W. Seamans, Craig R. Hicks, Kenneth J. Preusser

Bird Strike Committee-USA/Canada Joint Annual Meeting: 9th (2007)

Bird control at and around airfields is critical to safe airfield operation. Numerous bird-control products and strategies are available, all of which have limitations because of rapid habituation, ineffectiveness, expense or other factors. There is a need for new methods to manage birds at airports and other locations. In recent years, realistic effigies of dead turkey vultures (Cathartes aura) have proven effective as a species-specific means to disperse roosting vultures. To determine if this concept can be expanded to deter other birds that are a problem at airfields, we conducted trials using prepared ring-billed (Larus delawarensis) …

Bald Eagles: A Threatened Species Becomes A Threat To Aviation, Sandra E. Wright

Bird Strike Committee-USA/Canada Joint Annual Meeting: 9th (2007)

The bald eagle (Haliaeetus leucocephalus) population in the United States has made a tremendous recovery from fewer than 500 nesting pairs in 1970, to over 10,000 pairs in 2007. It is likely that the population will continue to grow. Every state, except Hawaii, now has nesting bald eagles. Because of the widespread recovery, the U. S. Department of the Interior removed the bald eagle from the Endangered Species List in August 2007. Bald eagles are still protected by the Migratory Bird Treaty Act and the Bald and Golden Eagle Protection Act as well as by state laws. At …

Unfolding Restricted Convex Caps, Joseph O'Rourke

Computer Science: Faculty Publications

This paper details an algorithm for unfolding a class of convex polyhedra, where each polyhedron in the class consists of a convex cap over a rectangular base, with several restrictions: the cap’s faces are quadrilaterals, with vertices over an underlying integer lattice, and such that the cap convexity is "radially monotone," a type of smoothness constraint. Extensions of Cauchy’s arm lemma are used in the proof of non-overlap.

Intrafield Patterns Of Wildlife Damage To Corn And Soybeans In Northern Indiana, Travis L. Devault, James C. Beasley, Lee A. Humberg, Brian J. Macgowan, Monica I. Retamosa, Olin E. Rhodes Jr.

United States Department of Agriculture Wildlife Services: Staff Publications

Management programs aimed at reducing wildlife damage to row crops rely on information concerning the spatial nature of wildlife damage at local and landscape scales. In this study we explored spatial patterns of wildlife damage within individual corn and soybean fields by describing relationships between specific locations where wildlife damage was recorded and distances from such locations to various habitat types that presumably influenced animal abundance and movements in our study area. Using stratified random sampling, we conducted depredation surveys of 100 corn fields and 60 soybean fields from May through October both in 2003 and 2004 and recorded the …

Mathematical Analysis Of Pde Systems Which Govern °Uid Structure Interactive Phenomena, George Avalos, Roberto Triggiani

Department of Mathematics: Faculty Publications

In this paper, we review and comment upon recently derived results for time dependent partial differential equation (PDE) models, which have been used to describe the various fluid-structure interactions which occur in nature. For these fluid-structure PDEs, this survey is particularly focused on the authors' results of (i) semigroup wellposedness, (ii) stability, and (iii) backward uniqueness.

The Agn-Obscuring Torus: The End Of The "Doughnut" Paradigm?, Moshe Elitzur, Isaac Shlosman

Physics and Astronomy Faculty Publications

Unified schemes of active galactic nuclei (AGNs) require an obscuring dusty torus around the central engine. The compact sizes (only a few parsecs) determined in recent high-resolution observations require that the obscuring matter be clumpy and located inside the region where the black hole gravity dominates over the galactic bulge. This location is in line with the scenario depicting the torus as the region of the clumpy wind coming off the accretion disk in which the clouds are dusty and optically thick. We study here the outflow scenario within the framework of hydromagnetic disk winds, incorporating the cloud properties determined …

Transport Schemes On A Sphere Using Radial Basis Functions, Natasha Flyer, Grady Wright

Mathematics Faculty Publications and Presentations

The aim of this work is to introduce the physics community to the high performance of radial basis functions (RBFs) compared to other spectral methods for modeling transport (pure advection) and to provide the first known application of the RBF methodology to hyperbolic partial differential equations on a sphere. First, it is shown that even when the advective operator is posed in spherical coordinates (thus having singularities at the poles), the RBF formulation of it is completely singularity-free. Then, two classical test cases are conducted: 1) linear advection, where the initial condition is simply transported around the sphere and 2) …

Age-Specific Prevalence And Years Of Healthy Life In A System With 3 Health States, Paula Diehr

Paula Diehr

Consider a 3-state system with one absorbing state, such as Healthy, Sick, and Dead. Over time, the prevalence of the Healthy state will approach an 'equilibrium' value that is independent of the initial conditions. We derived this equilibrium prevalence (Prev:Equil) as a function of the local transition probabilities. We then used Prev:Equil to estimate the expected number of years spent in the healthy state over time. This estimate is similar to the one calculated by multi-state life table methods, and has the advantage of having an associated standard error. In longitudinal data for older adults, the standard error was accurate …

Description Logic Programs: Normal Forms, Pascal Hitzler, Andreas Eberhart

Computer Science and Engineering Faculty Publications

The relationship and possible interplay between different knowledge representation and reasoning paradigms is a fundamental topic in artificial intelligence. For expressive knowledge representation for the Semantic Web, two different paradigms - namely Description Logics (DLs) and Logic Programming - are the two most successful approaches. A study of their exact relationships is thus paramount. An intersection of OWL with (function-free non-disjunctive) Datalog, called DLP (for Description Logic Programs), has been described in [1,2]. We provide normal forms for DLP in Description Logic syntax and in Datalog syntax, thus providing a bridge for the researcher and user who is familiar with …

Comparing Disjunctive Well-Founded Semantics, Matthias Knorr, Pascal Hitzler

Computer Science and Engineering Faculty Publications

While the stable model semantics, in the form of Answer Set Programming, has become a successful semantics for disjunctive logic programs, a corresponding satisfactory extension of the well-founded semantics to disjunctive programs remains to be found. The many current proposals for such an extension are so diverse, that even a systematic comparison between them is a challenging task. In order to aid the quest for suitable disjunctive well-founded semantics, we present a systematic approach to a comparison based on level mappings, a recently introduced framework for characterizing logic programming semantics, which was quite successfully used for comparing the major semantics …

Quantum Dot Resonant Tunneling Diodes For Telecom Wavelength Single Photon Detection, H. W. Li, Paul J. Simmonds, H. E. Beere, B. E. Kardynał, D. A. Ritchie, A. J. Shields

Paul J. Simmonds

Single photon detection was realized at a telecom wavelength with quantum dot resonant tunneling diodes grown on an InP substrate. The structure contains a AlAs/In_0.53Ga_0.47As/AlAs quantum well with InAs quantum dots grown on the top AlAs barrier. The single photon detection efficiency of the device under 1310 nm illumination was measured to be about 0.35% ± 0.07% with a dark count rate of 1.58×10^-6 ns^-1. This corresponds to an internal efficiency of 6.3%.

Interactive Web Portal Application For Ambalta School For Children With Autism, Cathy Talbot

Regis University Student Publications (comprehensive collection)

Abalta is a school, based in Galway, designed to educate children who suffer from autism. The school was borne out of the identified need for children with autism to get a specific focused education. In July, 2001, four sets of parents came together, using their own personal funds, to establish the school and had it up and running by September, 2001. It took months of hard work, political negotiating, and lobbying, culminating with a high court case to attain funding from the state. In today's Internet-oriented world, a web application is essential for businesses, organiiations and individuals to optimiie their …

An Efficient Scheme For Removing Compromised Sensor Nodes From Wireless Sensor Networks, Yong Wang, Byrav Ramamurthy, Xukai Zou, Yuyan Xue

CSE Technical Reports

Key management is a core mechanism to ensure the security of applications and network services in wireless sensor networks. It includes two aspects: key distribution and key revocation. Key distribution has been extensively studied in the context of sensor networks. However, key revocation has received relatively little attention. Existing key revocation schemes can be divided into two categories: centralized key revocation scheme and distributed key revocation scheme. In this paper, we first review and summarize the current key revocation schemes for sensor networks. Then, we present an efficient scheme of removing compromised sensor nodes from wireless sensor networks. Unlike most …

Group Rekeying Schemes For Secure Group Communication In Wireless Sensor Networks, Yong Wang, Byrav Ramamurthy, Yuyan Xue

CSE Technical Reports

Wireless sensor networks are promising solutions for many applications. However, wireless sensor nodes suffer from many constraints such as low computation capability, small memory, limited energy resources, and so on. Grouping is an important technique to localize computation and reduce communication overhead in wireless sensor networks. In this paper, we use grouping to refer to the process of combining a set of sensor nodes with similar properties. We propose four centralized group rekeying (CGK) schemes for secure group communication in sensor networks. The lifetime of a group is divided into three phases, i.e., group formation, group maintenance, and group dissolution. …

Ukeying: A Key Management Framework For Wireless Sensor Networks Utilizing A Unique Session Key, Yong Wang, Byrav Ramamurthy, Yuyan Xue

CSE Technical Reports

Key management is a core mechanism to ensure the security of applications and network services in wireless sensor networks. Key management includes two aspects: key distribution and key revocation. The goal of the key distribution is to establish the required keys between sensor nodes which must exchange data. Key revocation is used to remove compromised sensor nodes from the network. Although many key distribution schemes and key revocation schemes have been proposed in the literature, there is a lack of a framework which can integrate the schemes. In this paper, we propose a key management framework, uKeying, for wireless sensor …

Roc Surfaces In The Presence Of Verification Bias, Yueh-Yun Chi, Xiao-Hua (Andrew) Zhou

UW Biostatistics Working Paper Series

In diagnostic medicine, the Receiver Operating Characteristic (ROC) surface is one of the established tools for assessing the accuracy of a diagnostic test in discriminating three disease states, and the volume under the ROC surface has served as a summary index for diagnostic accuracy. In practice, the selection for definitive disease examination may be based on initial test measurements, and induces verification bias in the assessment. We propose here a nonparametric likelihood-based approach to construct the empirical ROC surface in the presence of differential verification, and to estimate the volume under the ROC surface. Estimators of the standard deviation are …

The Effect Of A New Version Of Software On Its Use: A Case Study Of A Course Management System, John Beckett

Faculty Works

Course Management Systems (CMS) are used to support the growing trend of colleges and universities to offer classes at a distance, and to use technology to provide resources and communication with and for students in traditional classroom settings. Actual use and success of these systems has been mixed in practice, however, for reasons which are not entirely clear.

The theory of Diffusion of Innovations (DOI) described and codified by Everett M. Rogers in 1962 is used to describe how innovations are selected, adopted, and brought to bear on the needs of people with jobs to do. Gary C. Moore and …

Colored Dissolved Organic Matter (Cdom) Workshop Summary, Catherine A. Corbett

Reports

The Charlotte Harbor NEP hosted a 2-day technical exchange workshop on CDOM as an imperative first step in implementation of the program’s numeric water quality targets to initiate a dialogue with local researchers and resource managers on the importance of CDOM dynamics and the roles it plays in estuaries. Charlotte Harbor National Estuary Program hosted the technical exchange workshop to discuss and gain a better understanding of CDOM dynamics in the Lemon Bay, Charlotte Harbor and Estero Bay watersheds.

Phenomenological Model For Infrared Emissions From High-Explosive Detonation Fireballs, Kevin C. Gross

Theses and Dissertations

Time-resolved infrared spectra were recently collected via a Fourier-transform spectrometer (FTS) from the detonation fireballs of two types of conventional military munitions (CMM) as well as uncased TNT and four types of enhanced novel explosives (ENEs). The CMM spectra are dominated by continuum emission, and a single-temperature Planckian distribution, modified for atmospheric attenuation, captures most of the variation in the data. Some evidence of selective emission is identified by systematic patterns in the fit residuals. The behavior of these systematic residuals affords a distinction between the two types of CMMs studied. The uncased TNT and ENE spectra appear strongly influenced …

Integrated Magnetic Bionanocomposites Through Nanoparticle-Mediated Assembly Of Ferritin, S Srivastava, B Samanta, Bj Jordan, R Hong, Q Xiao, Mt Tuominen, Vm Rotello

Vincent Rotello

Magnetic (FePt) and nonmagnetic (Au) nanoparticles were used to assemble ferritin into near-monodisperse bionanocomposites featuring regular interparticle spacing. The FePt/ferritin assemblies are integrated magnetic materials with ferritin providing added magnetic volume fraction to the magnetic nanocomposite. These assemblies differ from either of their constituent particles in terms of blocking temperature (TB), net magnetic moment, coercivity, and remnance.

Inclusion Of Electrochemically Active Guests By Novel Oxacalixarene Hosts, Daniel Sobransingh, Mahender B. Dewal, Jacob Hiller, Mark D. Smith, Linda S. Shimizu

Faculty Publications

We demonstrate for the first time the utility of oxacalixarenes as hosts and investigate the forces that influence the thermodynamics of binding.

Development Of A Method For Calculating Delta Scuti Rotational Velocities And Hydrogen Beta Color Indices, Tabitha Christi Buehler

Theses and Dissertations

To add to the understanding of the structure and evolution of Delta Scuti stars, 167 Delta Scutis north of -01 degrees declination and brighter than 13th magnitude have been observed spectroscopically. A method for calculating rotational velocity values and Hydrogen-Beta color indices for the stars in the data set with no previously published values is developed, using the stars in the data set brighter than 7th magnitude. Rotational velocity values for four stars with previously unknown values and Hydrogen-Beta index values for five stars with previously unknown values are calculated.

Exhuming Norwegian Ultrahigh-Pressure Rocks: Overprinting Extensional Structures And The Roleof The Nordfjord-Sogn Detachment Zone, Scott M. Johnston, Bradley R. Hacker, Torgeir B. Andersen

Physics

The Nordfjord-Sogn Detachment Zone (NSDZ) is widely cited as one of the primary structures responsible for the exhumation of Norwegian (ultra)high-pressure (UHP) rocks. Here we review data from the considerable volume of research describing this shear zone, and compile a strike-parallel cross section along the NSDZ from the Solund Basin in the south to the Sørøyane UHP domain in the north. This cross section highlights several previously unrecognized patterns, revealing a shear zone with top-to-the-west asymmetric fabrics that (1) initiated at amphibolite facies, (2) overprints metamorphic breaks and tectonostratigraphic contacts, and (3) has a gradational continuum of muscovite cooling ages. …

Novel Perturbation Approach For The Structure Factor Of The Attractive Hard-Core Yukawa Fluid, Andrij Trokhymchuk, Roman Melnyk, Filip Moucka, Ivo Nezbeda

Faculty Publications

A novel perturbation approach for the structure factor S(k) of the Lennard-Jones-type Yukawa fluid with z=1.8 is presented. An approach is based on a new reference system, that is, the short-range Yukawa model with z0 > z=1.8. By choosing for the reference system the value z0=6, it is shown that (i) the proposed approach for S(k) performs much better than the traditional hard-sphere reference perturbation method does; (ii) the use of an approximate mean spherical (MSA) description of the reference structure factor provides the results for S(k) that are more accurate as those obtained from the direct MSA computations; and (iii) …

Ua12/2/1 College Heights Herald, Vol. 83, No. 3, Wku Student Affairs

WKU Archives Records

WKU campus newspaper reporting campus, athletic and Bowling Green, Kentucky news.

The Acs Survey Of Galactic Globular Clusters: M54 And Young Populations In The Sagittarius Dwarf Spheroidal Galaxy, Michael H. Siegel, Aaron Dotter, Steven R. Majewski, Ata Sarajedini, Brian Chaboyer, David L. Nidever, Jay Anderson, Antonio Martin-French, Alfred Rosenberg, Luigi R. Bedin, Antonio Aparicio, Ivan King, Giampolo Piotto, I. Neill Reid

Dartmouth Scholarship

As part of the ACS Survey of Galactic Globular Clusters, we present new Hubble Space Telescope photometry of the massive globular cluster M54 (NGC 6715) and the superposed core of the tidally disrupted Sagittarius (Sgr) dSph galaxy. Our deep (F606W ~ 26.5), high-precision photometry yields an unprecedentedly detailed color-magnitude diagram showing the extended blue horizontal branch and multiple main sequences of the M54+Sgr system. The distance and reddening to M54 are revised using both isochrone and main-sequence fitting to (m - M)₀ = 17.27 and E(B - V) = 0.15. Preliminary assessment finds the …

Ovarian Cancer G Protein–Coupled Receptor 1, A New Metastasis Suppressor Gene In Prostate Cancer, Lisam Shanjukumar Singh, Michael Berk, Rhonda Oates, Zhenwen Zhao, Haiyan Tan, Ying Jiang, Aimin Zhou, Kashif Kirmani, Rosemary Steinmetz, Daniel Lindner, Yan Xu

Chemistry Faculty Publications

Background

Metastasis is a process by which tumors spread from primary organs to other sites in the body and is the major cause of death for cancer patients. The ovarian cancer G protein–coupled receptor 1 (OGR1) gene has been shown to be expressed at lower levels in metastatic compared with primary prostate cancer tissues.

Methods

We used an orthotopic mouse metastasis model, in which we injected PC3 metastatic human prostate cancer cells stably transfected with empty vector (vector-PC3) or OGR1-expressing vector (OGR1-PC3) into the prostate lobes of athymic or NOD/SCID mice (n = 3–8 mice per group). Migration of PC3 …

Barriers To Rfid Adoption In The Supply Chain, Nick Huber, Katina Michael, Luke Mccathie

Faculty of Informatics - Papers (Archive)

This paper explores the current barriers to adoption of radio-frequency identification (RFID) for supply chain applications, and documents the perceptions of key players in the Australian RFID market. The paper contains data collected from interviews of both technology providers (e.g. RFID vendors), and prospective business customer (i.e. a large retailer). Data collected is analyzed using qualitative content analysis, and supported with figures and tables. The findings show that the three main barriers to RFID adoption are: the cost of RFID implementation (especially ongoing tag costs), lack of customer awareness and education, and a technology which is only at the beginning …