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2007

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Articles 1111 - 1140 of 6758

Full-Text Articles in Physical Sciences and Mathematics

Bubble Raft Model For A Paraboloidal Crystal, Mark Bowick, Luca Giomi, Homin Shin, Creighton K. Thomas Sep 2007

Bubble Raft Model For A Paraboloidal Crystal, Mark Bowick, Luca Giomi, Homin Shin, Creighton K. Thomas

Physics - All Scholarship

We investigate crystalline order on a two-dimensional paraboloid of revolution by assembling a single layer of millimeter-sized soap bubbles on the surface of a rotating liquid, thus extending the classic work of Bragg and Nye on planar soap bubble rafts. Topological constraints require crystalline configurations to contain a certain minimum number of topological defects such as disclinations or grain boundary scars whose structure is analyzed as a function of the aspect ratio of the paraboloid. We find the defect structure to agree with theoretical predictions and propose a mechanism for scar nucleation in the presence of large Gaussian curvature.

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Formation Of Molecular Hydrogen On Amorphous Silicate Surfaces, Gianfranco Vidali, Ling Li, E. Congiu, S. Swords Sep 2007

Formation Of Molecular Hydrogen On Amorphous Silicate Surfaces, Gianfranco Vidali, Ling Li, E. Congiu, S. Swords

Physics - All Scholarship

Experimental results on the formation of molecular hydrogen on amorphous silicate surfaces are presented and analyzed using a rate equation model. The energy barriers for the relevant diffusion and desorption processes are obtained. They turn out to be significantly higher than those obtained for polycrystalline silicates, demonstrating the importance of grain morphology. Using these barriers we evaluate the efficiency of molecular hydrogen formation on amorphous silicate grains under interstellar conditions. It is found that unlike polycrystalline silicates, amorphous silicate grains are efficient catalysts of H_2 formation in diffuse interstellar clouds.

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A Better Definition Of The Kilogram, Ronald F. Fox, Theodore P. Hill Sep 2007

A Better Definition Of The Kilogram, Ronald F. Fox, Theodore P. Hill

Research Scholars in Residence

Fixing the value of Avogadro's constant, the number of atoms in 12 grams of carbon-12, at exactly 844468863 would imply that one gram is the mass of exactly 18x140744813 carbon-12 atoms. This new definition of the gram, and thereby also the kilogram, is precise, elegant and unchanging in time, unlike the current 118-year-old artifact kilogram in Paris and the proposed experimental definitions of the kilogram using man-made silicon spheres or the watt balance apparatus.

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A Nonlinear Feature Extractor For Texture Segmentation, Fok Hing Chi Tivive, Abdesselam Bouzerdoum Sep 2007

A Nonlinear Feature Extractor For Texture Segmentation, Fok Hing Chi Tivive, Abdesselam Bouzerdoum

Faculty of Informatics - Papers (Archive)

This article presents a feed-forward network architecture that can be used as a nonlinear feature extractor for texture segmentation. It comprises two layers of feature extraction units; each layer is arranged into several planes, called feature maps. The features extracted from the second layer are used as the final texture features. The feature maps are characterised by a set of masks (or weights), which are shared among all the units of a single feature map. Combining the nonlinear feature extractor with a classifier, we have developed a texture segmentation system that does not rely on pre-defined filters for feature extraction; …

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Analyzing Direct Effects In Randomized Trials With Secondary Interventions , Michael Rosenblum, Nicholas P. Jewell, Mark J. Van Der Laan, Stephen Shiboski, Ariane Van Der Straten, Nancy Padian Sep 2007

Analyzing Direct Effects In Randomized Trials With Secondary Interventions , Michael Rosenblum, Nicholas P. Jewell, Mark J. Van Der Laan, Stephen Shiboski, Ariane Van Der Straten, Nancy Padian

U.C. Berkeley Division of Biostatistics Working Paper Series

The Methods for Improving Reproductive Health in Africa (MIRA) trial is a recently completed randomized trial that investigated the effect of diaphragm and lubricant gel use in reducing HIV infection among susceptible women. 5,045 women were randomly assigned to either the active treatment arm or not. Additionally, all subjects in both arms received intensive condom counselling and provision, the "gold standard" HIV prevention barrier method. There was much lower reported condom use in the intervention arm than in the control arm, making it difficult to answer important public health questions based solely on the intention-to-treat analysis. We adapt an analysis …

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Reactivity Of [Re2(Co)8(Mecn)2] With Thiazoles: Hydrido Bridged Dirhenium Compounds Bearing Thiazoles In Different Coordination Modes, Shariff E. Kabir, Faruque Ahmed, Anamika Das, Mohammad R. Hassan, Daniel T. Haworth, Sergey V. Lindeman, G. M. Golzar Hossain, Tasneem Siddiquee, Dennis W. Bennett Sep 2007

Reactivity Of [Re2(Co)8(Mecn)2] With Thiazoles: Hydrido Bridged Dirhenium Compounds Bearing Thiazoles In Different Coordination Modes, Shariff E. Kabir, Faruque Ahmed, Anamika Das, Mohammad R. Hassan, Daniel T. Haworth, Sergey V. Lindeman, G. M. Golzar Hossain, Tasneem Siddiquee, Dennis W. Bennett

Chemistry Faculty Research and Publications

Reactions of the labile compound [Re2(CO)8(MeCN)2] with thiazole and 4-methylthiazole in refluxing benzene afforded the new compounds [Re2(CO)7{μ-2,3-η2-C3H(R)NS}{η1-NC3H2(4-R)S}(μ-H)] (1, R = H; 2, R = CH3), [Re2(CO)6{μ-2,3-η2-C3H(R)NS}{η1-NC3H2(4-R)S}2(μ-H)] (3, R = H; 4, R = CH3) and fac-[Re(CO)3(Cl){η1-NC3H2(4-R)S}2] (5, R = H; …

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Modelling Computational Requirements Of Mobile Robotic Systems Using Zones And Processing Windows, Ala' Qadi, Steve Goddard, Jiangyang Huang, Shane Farritor Sep 2007

Modelling Computational Requirements Of Mobile Robotic Systems Using Zones And Processing Windows, Ala' Qadi, Steve Goddard, Jiangyang Huang, Shane Farritor

CSE Technical Reports

Mobile robotic systems must sense constraints imposed by a dynamically changing environment and predictably react to those changes in real-time. Complexity arises in mobile robotic systems because the computing platform travels through the environment with which the system is interacting. These systems have spatio-temporal requirements in the sense that correct behavior is defined in terms of both space and time. The focus of this paper is mobile robotic platforms that must sense their environment and avoid obstacles as they navigate from one point to another. We present a design and analysis methodology for these platforms that integrates spatio-temporal attributes with …

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Top Ten Geological Reason To Use The Library, Maxine G. Schmidt Sep 2007

Top Ten Geological Reason To Use The Library, Maxine G. Schmidt

Maxine G Schmidt

Geoscience researchers rely heavily on electronic resources. Unfortunately, they tend to access these resources through Google, or, sometimes, Google Scholar. The Library has provided resources which cannot be found or cannot be accessed using Google.

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Student Rights Advocate And Author To Speak, Teresa A. Sherman Sep 2007

Student Rights Advocate And Author To Speak, Teresa A. Sherman

News and Events

No abstract provided.

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Wetland Restoration Response Analysis Using Modis And Groundwater Data, Assefa M. Melesse, Vijay Nangia, Xixi Wang, Michael Mcclain Sep 2007

Wetland Restoration Response Analysis Using Modis And Groundwater Data, Assefa M. Melesse, Vijay Nangia, Xixi Wang, Michael Mcclain

Department of Earth and Environment

Vegetation cover and groundwater level changes over the period of restoration are the two most important indicators of the level of success in wetland ecohydrological restoration. As a result of the regular presence of water and dense vegetation, the highest evapotranspiration (latent heat) rates usually occur within wetlands. Vegetation cover and evapotranspiration of large areas of restoration like that of Kissimmee River basin, South Florida will be best estimated using remote sensing technique than point measurements. Kissimmee River basin has been the area of ecological restoration for some years. The current ecohydrological restoration activities were evaluated through fractional vegetation cover …

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A Burst Chasing X-Ray Polarimeter, Joanne E. Hill, Scott Barthelmy, J Kevin Black, Philip Deines-Jones, Keith Jahoda, Takanori Sakamoto, Philip Kaaret, Mark L. Mcconnell, Peter F. Bloser, John R. Macri, Jason S. Legere, James M. Ryan, Billy R. Smith Jr, Bing Zhang Sep 2007

A Burst Chasing X-Ray Polarimeter, Joanne E. Hill, Scott Barthelmy, J Kevin Black, Philip Deines-Jones, Keith Jahoda, Takanori Sakamoto, Philip Kaaret, Mark L. Mcconnell, Peter F. Bloser, John R. Macri, Jason S. Legere, James M. Ryan, Billy R. Smith Jr, Bing Zhang

Space Science Center

Gamma-ray bursts are one of the most powerful explosions in the universe and have been detected out to distances of almost 13 billion light years. The exact origin of these energetic explosions is still unknown but the resulting huge release of energy is thought to create a highly relativistic jet of material and a power-law distribution of electrons. There are several theories describing the origin of the prompt GRB emission that currently cannot be distinguished. Measurements of the linear polarization would provide unique and important constraints on the mechanisms thought to drive these powerful explosions. We present the design of …

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Non-Destructive Horseradish Peroxidase Immobilization In Porous Silica Nanoparticles, Rebecca Voss, Michael A. Brook, Jordan Thompson, Yang Chen, Robert H. Pelton, John D. Brennan Sep 2007

Non-Destructive Horseradish Peroxidase Immobilization In Porous Silica Nanoparticles, Rebecca Voss, Michael A. Brook, Jordan Thompson, Yang Chen, Robert H. Pelton, John D. Brennan

Rebecca Cademartiri

The preparation of protein doped silica particles is impeded by the difficulty of incorporating proteins within the silica mesostructure under conditions that do not lead to denaturation. Herein, the synthesis of spherical silica particles (diameter 150 nm–550 nm) under protein friendly conditions in a one step process is described. Diglyceroxysilane (DGS) was reacted in ethanol and methanol-free conditions in pure water or in buffer solutions with or without the presence of additional glycerol. Stabilization of the particles, consistent with steric stabilization, was obtained using poly(ethylene glycol) (PEG) of various molecular weights and with various end groups, including allyl and (CH2)3Si(OEt)3 …

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Constraining F(R) Gravity As A Scalar-Tensor Theory, Thomas Faulkner, Max Tegmark, Emory F. Bunn, Yi Mao Sep 2007

Constraining F(R) Gravity As A Scalar-Tensor Theory, Thomas Faulkner, Max Tegmark, Emory F. Bunn, Yi Mao

Physics Faculty Publications

We search for viable f(R) theories of gravity, making use of the equivalence between such theories and scalar-tensor gravity. We find that models can be made consistent with solar system constraints either by giving the scalar a high mass or by exploiting the so-called chameleon effect. However, in both cases, it appears likely that any late-time cosmic acceleration will be observationally indistinguishable from acceleration caused by a cosmological constant. We also explore further observational constraints from, e.g., big bang nucleosynthesis and inflation.

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A General Quantum Mechanical Method To Predict Positron Spectroscopy, Paul E. Adamson Sep 2007

A General Quantum Mechanical Method To Predict Positron Spectroscopy, Paul E. Adamson

Theses and Dissertations

The nuclear-electronic orbital (NEO) method was modified and extended to positron systems. NEO - second-order Moeller-Plesset perturbation (MP2) energies and annihilation rates were calculated for the positronium hydride (PsH) system, and the effects of basis set size on correlation energies captured with the NEO-MP2 and NEO-full configuration interaction (FCI) methods are compared and discussed. Equilibrium geometries and vibrational energy levels were computed for the LiX and e+LiX (X = H, F, Cl) systems at the MP2 and NEO-MP2 levels. It was found that anharmonicity plays a significant role, specifically in the differences between the vibrational energy levels of …

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Oxygen Measurement Via Phosphorescence: Reaction Of Sodium Dithionite With Dissolved Oxygen, Zhimin Tao, Jerry Goodisman, Abdul-Kader Souid Sep 2007

Oxygen Measurement Via Phosphorescence: Reaction Of Sodium Dithionite With Dissolved Oxygen, Zhimin Tao, Jerry Goodisman, Abdul-Kader Souid

Chemistry - All Scholarship

A homemade instrument for the measurement of oxygen concentration in aqueous solutions measures the decay rate of the phosphorescence of a Pd-porphyrin complex (phosphor) dissolved in the solution, which is flashed every 0.1 s with 630 nm light. The concentration of O 2 is a linear function of the decay rate. The instrument is used to study the reaction of dithionite (S 2O 4 2-) with O 2 at 25°C and 37°C. It is found that the ratio of dithionite to oxygen consumed in the reaction is 1.2 ± 0.2 at 25°C and 1.7 ± 0.1 at 37°C, …

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Anticipating Semilinear Spdes (Mittag-Leffler Institute Workshop), Salah-Eldin A. Mohammed Sep 2007

Anticipating Semilinear Spdes (Mittag-Leffler Institute Workshop), Salah-Eldin A. Mohammed

Miscellaneous (presentations, translations, interviews, etc)

No abstract provided.

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Antiferromagnetism And Superconductivity: Magnetic Order In Y Sr2 Cu2.1 Ru0.9 O7.9, H. A. Blackstead, William B. Yelon, M. Kornecki, M. P. Smylie, Q. Cai, J. Lamsal, V. P.S. Awana, S. Balamurugan, E. Takayama-Muromachi Sep 2007

Antiferromagnetism And Superconductivity: Magnetic Order In Y Sr2 Cu2.1 Ru0.9 O7.9, H. A. Blackstead, William B. Yelon, M. Kornecki, M. P. Smylie, Q. Cai, J. Lamsal, V. P.S. Awana, S. Balamurugan, E. Takayama-Muromachi

Physics Faculty Research & Creative Works

Superconducting (Tc ∼40 K) YSr2Cu2.1Ru0.9O7.9, prepared by a high-temperature high-pressure process, has been studied by electron spin resonance (ESR), neutron diffraction and superconducting quantum interference device magnetometry. Neutron diffraction confirms the antiferromagnetic ordering of the Ru atoms at TN-Ru ∼140 K, as reported by Lynn and Takagiwa ESR data show antiferromagnetic order that persists well above the Ru ordering temperature, with an intensity that peaks close to TN-Ru. the ESR data are very similar to those observed in GdSr2Cu2RuO8 and YSr2Cu2.1Nb0.9O …

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Facing Bird Attracting Factors Outside Airports: The Italian Approach (*), Valter Battistoni Sep 2007

Facing Bird Attracting Factors Outside Airports: The Italian Approach (*), Valter Battistoni

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

When in 1994 an important CAA executive and former boss of mine, just appointed Chairperson of Bird Strike Committee Italy, telephoned me and in a “friendly” manner “ordered” me to prepare a paper and a presentation for a bird strike meeting which was going to be held soon in Palermo, three things immediately appeared clear to me: 1) Palermo was a beautiful town that I hadn’t visited since I was a teenager, therefore a Government paid week-end was not so bad. 2) I had no idea what to say at the meeting as my ignorance about bird strikes was almost …

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Laser Dispersal Of Gulls From Reservoirs Near Airports, Andy Baxter Sep 2007

Laser Dispersal Of Gulls From Reservoirs Near Airports, Andy Baxter

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

Gull numbers roosting at two waterbodies close to a military airfield in central England were monitored at dusk and dawn for four weeks during November 2006. Approximately 25,000 and 8,000 gulls were present at each site respectively. Two LEM 50 laser torches mounted on tripods were then deployed to disperse the roost at one of the sites. No effect was observed before dusk or after dawn. Beams were scanned approximately 0.5 to 1metre above the surface of the water across an arc of approximately 200o during a three minute period. The process was repeated continuously for one hour from dusk. …

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A Successful Case Study: The Bird Control Program Of Waste Management Outer Loop Recycling And Disposal Facility, Louisville, Kentucky, Usa, Russell P. Defusco Sep 2007

A Successful Case Study: The Bird Control Program Of Waste Management Outer Loop Recycling And Disposal Facility, Louisville, Kentucky, Usa, Russell P. Defusco

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

Landfills and airports have a long history of incompatibility. Birds are attracted to landfills for various reasons including food sources, habitat, and orographic lift. Since landfills can be avian attractants, they are required to be sited at least 10,000 feet away from commercial airports in the United States. Waste Management of Kentucky (WMK) operates a municipal landfill and recycling facility -- the Outer Loop Recycling and Disposal Facility (OLRDF) located less than 1.5 miles south of the Louisville Standiford airport which, as the hub airport for United Parcel Service, is the fourth largest cargo airport in the U.S. As part …

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The Birdstrike Identification Program At The Smithsonian Institution And New Recommendations For Dna Sampling, Carla J. Dove, Marcy Heacker, Nancy Rotzel Sep 2007

The Birdstrike Identification Program At The Smithsonian Institution And New Recommendations For Dna Sampling, Carla J. Dove, Marcy Heacker, Nancy Rotzel

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

The U.S. Air Force (USAF) and the Federal Aviation Administration (FAA) have been supporting a free-of-charge birdstrike identification program at the Smithsonian Institution for many years. Approximately 50% of the birdstrike cases received are identified to species level using whole feathers, or feather fragments in comparison with museum specimens. The remaining cases are identified using microscopic analysis and/or DNA “barcoding”. DNA barcoding is the newest tool in the birdstrike identification toolbox and involves extracting mtDNA (cytochrome c oxides subunit 1, COI, cox1, “barcode gene”) from birdstrike samples that consist of blood and tissue and then matching the …

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Integration And Validation Of Networked Avian Radar (Ivar), Marissa Brand Sep 2007

Integration And Validation Of Networked Avian Radar (Ivar), Marissa Brand

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

A team of scientists and engineers from the federal government, industry, and academia is evaluating the ability of digital radar systems to identify and track biological targets and then validating these systems under realistic operational conditions. The Integration and Validation of Avian Radars (IVAR) project is funded by the Department of Defense Environmental Security Technology Certification Program. The eBirdRad radar unit utilizes off the shelf X-band marine radar coupled with advanced digital signal processing and tracking algorithms to process target information. The overall objectives of the IVAR project include: 1) the use of independent visual, thermal and other observations to …

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Www Integration Of Faa And Swa Birdstrike Reporting Systems, Stanley D. Clark Sep 2007

Www Integration Of Faa And Swa Birdstrike Reporting Systems, Stanley D. Clark

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

The Federal Aviation Agency (FAA) Birdstrike Reporting System has historically been a manual, “pen and paper” system since its inception. Because it has been so labor-intensive, birdstrike reporting by Southwest Airline Pilots could best be described as “sporadic” as long as the FAA system operated outside the internal airline system. By using web-based reporting systems, with imbedded checks and balances, Southwest Airlines has achieved a dramatic increase in birdstrikes reported to the FAA.

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Airport Bird Hazard Risk Assessment Process, Richard Sowden, Terry Kelly, Stewart Dudley Sep 2007

Airport Bird Hazard Risk Assessment Process, Richard Sowden, Terry Kelly, Stewart Dudley

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

This paper presents an overview of Transport Canada’s airport bird hazard risk assessment process (ABRAP), which will be published in 2007.1 ABRAP examines and categorizes the relationship between airport-area land uses and bird species to predict risks to aircraft in various phases of flight. The result is the creation of customized bird hazard zones that accommodate the unique features and challenges at each airport, and that differ dramatically from the circular zoning patterns traditionally drawn from an airport’s geographic centre.

The paper briefly describes ABRAP, lists the diverse ways in which it can be applied, and illustrates how the process …

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An Advanced Avian Radar Display For Automated Bird Strike Risk Determination For Airports And Airfields, T. Adam Kelly, Ron Merritt, Gary W. Andrews Sep 2007

An Advanced Avian Radar Display For Automated Bird Strike Risk Determination For Airports And Airfields, T. Adam Kelly, Ron Merritt, Gary W. Andrews

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

Over the past ten years, development of bird detection radars for use as real time aircraft birdstrike avoidance systems has moved beyond research and development into active deployment of the technology as an operational tool in a BASH program (Kelly 2006). A key challenge in use of avian radars at both military and commercial airfields however has been integration of the greatly expanded level of risk information provided by avian radar technology into the current procedures and methods for setting bird strike risk conditions at airports and airfields. Over the past two years, much of the effort at DeTect, Inc. …

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Using Zena™ Prototypes As Perching Deterrents On Airfield Signage, Noel K. Jinings Sep 2007

Using Zena™ Prototypes As Perching Deterrents On Airfield Signage, Noel K. Jinings

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

Airfields often provide very attractive habitat for many avian species, including a variety of raptor species. Avian wildlife at the Portland International Airport (PDX) poses the greatest wildlife strike risk to aircraft. More specifically, raptors at PDX are designated as “very high” for both the probability of a strike occurrence and the potential for extreme damage [Ref. 2004 PDX WHMP risk assessment based on model by Dr. J R Allan of the United Kingdom]. As such, raptors are the focus of much of the management efforts on this airfield. One of the biggest concerns for wildlife managers on the PDX …

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An Overview Of Avian Radar Developments – Past, Present And Future, Tim J. Nohara, B. Eng, M. Eng, Peter Weber, Andrew Ukrainec, Al Premji, Graeme Jones Sep 2007

An Overview Of Avian Radar Developments – Past, Present And Future, Tim J. Nohara, B. Eng, M. Eng, Peter Weber, Andrew Ukrainec, Al Premji, Graeme Jones

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

The objective of this paper is to stand back and take an organized look at these developments in avian radar technology, with a view towards improving our understanding of this complex tool set. By reviewing the past, a context will be provided within which one can better appreciate what has been accomplished in the present, and where technology and products still need to go in the future. It is hoped that a better understanding will assist stakeholders in making the best use of these tools, today and tomorrow.

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Further Discussion Of Bird Strike Design Issues For Engines With Obscured Fans, Julian M. Reed Sep 2007

Further Discussion Of Bird Strike Design Issues For Engines With Obscured Fans, Julian M. Reed

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

A previous conference presentation (Baltimore, 2004) introduced the subject of obscured turbo-fans and discussed it in the context of bird strikes. In such a case, the bird will have significant interaction with the internal structure of the aircraft intake during its passage from intake lip to fan and damage to the bird may well occur causing it to pose a significantly different threat to the integrity of the engine. This paper explores the possible interactions that take place in such an installation prior to the bird reaching the fan face and makes use of engine and bird structural test data …

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Bald Eagle Nest Removal: Making A Case And Building Consensus Among Various Agencies And Organizations For Amicable Removal, Johnny C. Metcalf Sep 2007

Bald Eagle Nest Removal: Making A Case And Building Consensus Among Various Agencies And Organizations For Amicable Removal, Johnny C. Metcalf

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

The bald eagle is an iconic symbol representing strength and freedom throughout the Americas and evokes strong public emotion and sentiment. Despite tremendous population recovery in the United States resulting in its removal from the U.S. Department of Interiors Endangered Species list, state and federal agencies are hesitant to approve activity that could be interpreted as detrimental to eagles. Florida accounts for more than 85% of the entire southern bald eagle population and has between 1000 to 1200 mated pairs. Habitat loss and expanding populations are forcing eagles to adopt alternative nesting sites including the airport environment. Eagle / aviation …

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Airport Wildlife Strike Summary And Risk Analysis Report: A New Addition To The Faa’S Wildlife Hazard Mitigation Website, Richard A. Dolbeer, Heather Marriot, Allen Newman Sep 2007

Airport Wildlife Strike Summary And Risk Analysis Report: A New Addition To The Faa’S Wildlife Hazard Mitigation Website, Richard A. Dolbeer, Heather Marriot, Allen Newman

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

Aircraft collisions with birds and other wildlife are an increasing concern for the aviation industry. The U.S. Federal Aviation Administration (FAA), through agreements with the U.S. Department of Agriculture, Wildlife Services and Embry-Riddle Aeronautical University, developed a National Wildlife Strike Database to better define the wildlife strike problem. Annual reports that summarize the data (about 72,500 strike records for civil aircraft in USA, 1990-2006) provide a foundation for FAA national policies and guidance regarding research and management efforts to reduce wildlife strikes. However, these national analyses do not provide specific information regarding strikes at individual airports or for other specific …

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