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Utah State University

2018

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Articles 331 - 340 of 340

Full-Text Articles in Physical Sciences and Mathematics

Electron Range Computational Tool For Arbitrary Materials Over A Wide Energy Range, Gregory Wilson, Anne C. Starley, Jr Dennison Jan 2018

Electron Range Computational Tool For Arbitrary Materials Over A Wide Energy Range, Gregory Wilson, Anne C. Starley, Jr Dennison

Posters

No abstract provided.

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Incorporating Electron Range Approximations Into Secondary Electron Emission Models, Gregory Wilson Jan 2018

Incorporating Electron Range Approximations Into Secondary Electron Emission Models, Gregory Wilson

Presentations

No abstract provided.

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Cooperative Extension Agents As Key Informants In Assessing Wildlife Damage Trends In Georgia, Rhianna R. Hohbein, Michael T. Mengak Jan 2018

Cooperative Extension Agents As Key Informants In Assessing Wildlife Damage Trends In Georgia, Rhianna R. Hohbein, Michael T. Mengak

Human–Wildlife Interactions

To manage emerging human-wildlife conflicts, wildlife managers will require more information regarding trends in wildlife damage and public perceptions of control measures. In 2017, we administered an online survey to Georgia Agriculture and Natural Resource County Cooperative Extension Agents (ANR Agents) to assess the types of inquiries or complaints about nuisance wildlife they had received during the previous year. We asked questions about the common species creating problems, the nature of the damage reported, and perceptions of client preferences regarding different types of nuisance wildlife control. We compared the results of our 2017 survey to a similar survey conducted in …

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Black Bears Recolonizing Historic Ranges: Indiana Human–Bear Interactions, Bradford J. Westrich, Emily B. Mccallen, Geriann Albers Jan 2018

Black Bears Recolonizing Historic Ranges: Indiana Human–Bear Interactions, Bradford J. Westrich, Emily B. Mccallen, Geriann Albers

Human–Wildlife Interactions

Over a century after extirpation from Indiana, USA, 2 American black bears (Ursus americanus) were confirmed in the state during the summers of 2015 and 2016. The first bear encountered a public and management agency unaccustomed to living with large carnivores, which resulted in intentional and unintentional feedings, habituation, and ultimately its euthanasia. The Indiana Department of Natural Resources (DNR) attempted to learn from this encounter and began preparing for the next transient black bear. Education materials were created to help minimize human–bear interactions, promote living safely with bears, and inform about what to do when encountering a …

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Human-Bear Conflicts In Massanutten Village: Achieving Success Requires Partnerships, Ally M. Scott, David M. Kocka, Glenn W. Mitchell Jan 2018

Human-Bear Conflicts In Massanutten Village: Achieving Success Requires Partnerships, Ally M. Scott, David M. Kocka, Glenn W. Mitchell

Human–Wildlife Interactions

Interactions between humans and black bears (Ursus americanus) in Virginia, USA, increase as bear populations recover from historically low levels and expand their range to seek food in human-modified environments. In 2002, the Virginia Department of Game and Inland Fisheries (VDGIF) changed its management of human–bear conflicts from translocating bears involved in conflicts to emphasizing human behavior changes. Herein we provide an overview of human–bear conflict management at Massanutten Village (Village), a popular four-season resort with 3 ownerships. Before 2009, VDGIF received an average of 60–70 human–bear interaction complaints from the Village annually. In 2009, 2 Village ownerships …

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Toward Sustainable Conservation And Management Of Human-Wildlife Interactions In The Mmadinare Region Of Botswana: Villagers’ Perceptions On Challenges And Prospects, Oitshepile M. Modise, Rebecca Nthogo Lekoko, Olekae Tsompi Thakadu, Masego Ayo Mpotokwane Jan 2018

Toward Sustainable Conservation And Management Of Human-Wildlife Interactions In The Mmadinare Region Of Botswana: Villagers’ Perceptions On Challenges And Prospects, Oitshepile M. Modise, Rebecca Nthogo Lekoko, Olekae Tsompi Thakadu, Masego Ayo Mpotokwane

Human–Wildlife Interactions

Human–wildlife conflicts are increasing globally. The increase in conflicts has been attributed to growing human and wildlife populations and a per capita increase in the consumption of natural resources. In Botswana, conflicts between humans and elephants (Loxodonta africana) are increasing. The growing human population (2.2 million) is encroaching on the animals’ already restricted range. Concomitantly, more elephants are adversely affecting arable agriculture production. To better understand the magnitude and intensity of human–wildlife interactions with elephants and other native wildlife species in Botswana, we collected data through community forum conducted July 17–18, 2017 at a “Kgotla” meeting in Mmadinare, a village …

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Investigating The Opal Cubesat’S Ability To Measure Thermospheric Gravity Waves, Kenneth Zia, Michael J. Taylor, Ludger Scherliess Jan 2018

Investigating The Opal Cubesat’S Ability To Measure Thermospheric Gravity Waves, Kenneth Zia, Michael J. Taylor, Ludger Scherliess

Posters

Understanding the Earth’s lower thermosphere is of high interest to the space science community because of competing forcing due to solar heating above and episodic wave forcing from below. The NSF sponsored OPAL cubesat is designed to measure the temperature profile in this region by observing day-time O2 A time O2 A-band (~760nm) emission on the limb and is expected to be launched from the ISS (International Space Station). To band (~760nm) emission on the limb and is expected to be launched from the ISS (International Space Station). To investigate the instrument’s ability to detect space weather signatures (i.e. solar …

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Investigating Gravity Waves In Polar Mesospheric Clouds Using Tomographic Reconstructions Of Aim Satellite Imagery, V. P. Hart, M. J. Taylor, T. E. Doyle, Yucheng Zhao, Pierre-Dominique Pautet, B. L. Carruth, D. W. Rusch, J. M. Russell Iii Jan 2018

Investigating Gravity Waves In Polar Mesospheric Clouds Using Tomographic Reconstructions Of Aim Satellite Imagery, V. P. Hart, M. J. Taylor, T. E. Doyle, Yucheng Zhao, Pierre-Dominique Pautet, B. L. Carruth, D. W. Rusch, J. M. Russell Iii

Publications

This research presents the first application of tomographic techniques for investigating gravity wave structures in polar mesospheric clouds (PMCs) imaged by the Cloud Imaging and Particle Size instrument on the NASA AIM satellite. Albedo data comprising consecutive PMC scenes were used to tomographically reconstruct a 3‐D layer using the Partially Constrained Algebraic Reconstruction Technique algorithm and a previously developed “fanning” technique. For this pilot study, a large region (760 × 148 km) of the PMC layer (altitude ~83 km) was sampled with a ~2 km horizontal resolution, and an intensity weighted centroid technique was developed to create novel 2‐D surface …

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Applied Mathematical Programming, Man-Keun Kim, Bruce A. Mccarl, Thomas H. Spreen Jan 2018

Applied Mathematical Programming, Man-Keun Kim, Bruce A. Mccarl, Thomas H. Spreen

Textbooks

This book is intended to both serve as a reference guide and a text for a course on Applied Mathematical Programming for upper undergraduate and Master level students in Economics, Applied Economics, Agricultural and Resource Economics, and Management; primarily based on McCarl and Spreen (2013). The material presented in McCarl and Spreen (2013) concentrates upon conceptual issues, problem formulation, computerized problem solution, and results interpretation; it is designed for the advanced readers who are familiar with mathematical economics including linear and matrix algebra and also with advanced modeling skills. Upper level undergraduate and/or Master students may not be beneficial from …

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Mid-Latitude Climatologies Of Mesospheric Temperature And Geophysical Temperature Variability Determined With The Rayleigh-Scatter Lidar At Alo-Usu, Joshua P. Herron, Vincent B. Wickwar Jan 2018

Mid-Latitude Climatologies Of Mesospheric Temperature And Geophysical Temperature Variability Determined With The Rayleigh-Scatter Lidar At Alo-Usu, Joshua P. Herron, Vincent B. Wickwar

All Physics Faculty Publications

From 1993-2004, 839 nights were observed with the Rayleigh-scatter lidar at Utah State University’s Atmospheric Lidar Observatory. They were reduced to obtain nighttime mesospheric temperatures between 45 and ~90 km, which were then combined to derive composite annual climatologies of mid-latitude temperatures and geophysical temperature variability. At 45 km, near the stratopause, there is a ~250 K temperature minimum in mid-winter and a 273 K maximum in mid-May. The variability behaves oppositely, being 7-10 K in winter and 2.5 K in summer. At 85 km, there is a 215 K temperature maximum at the end of December and a 170 …

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