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Articles 181591 - 181620 of 5152599
Full-Text Articles in Entire DC Network
Poly(2-Methyl 1-Pentene Sulfone) (Pmps) As A Potential Oxidation Retardant For Aluminum Mirrors For Space Telescopes, Kira Sand, Matthew Clarkson, Morgan Peterson, David Allred
Poly(2-Methyl 1-Pentene Sulfone) (Pmps) As A Potential Oxidation Retardant For Aluminum Mirrors For Space Telescopes, Kira Sand, Matthew Clarkson, Morgan Peterson, David Allred
Utah Space Grant Consortium
The reflectivity of aluminum mirrors, essential for capturing high-quality far-ultraviolet (FUV) images in space telescopes, is compromised by oxidation caused by exposure to Earth's atmosphere. Barrier coatings like magnesium fluoride can protect aluminum but still permit slow oxidation over time. To address this, we propose using photodegrading polymer films, which depolymerize under UV light in a vacuum, as a protective coating for aluminum mirrors until they exit Earth's atmosphere. Our research focuses on Poly(2-methyl 1-pentene sulfone) (PMPS), which depolymerize when exposed to ultraviolet light in vacuum, ensuring stability until reaching space.
Mapping Accretion Around The Black Hole X-Ray Binary Maxi J1803-298 With Reflection, Brianna Searle, Benjamin Coughenour
Mapping Accretion Around The Black Hole X-Ray Binary Maxi J1803-298 With Reflection, Brianna Searle, Benjamin Coughenour
Utah Space Grant Consortium
MAXI J1803-298 is a recently discovered transient black hole (BH) X-ray binary that went into outburst on May 1st, 2021, and was detected with MAXI/GSC1 onboard the ISS. NuSTAR observed MAXI J1803-298 four times during its outburst (see Table 1, Figure 1)2,3. I modeled the spectrum to see reflection features and learn about the inner accretion disk and the environment around the BH. Figure 1 and Table 1 show that the outburst started roughly on May 1st, the peak was on May 14th, and the last observation was on June 17th.
Raman Imaging Of Carbon Materials, Seth Stringham, Dustin Shipp
Raman Imaging Of Carbon Materials, Seth Stringham, Dustin Shipp
Utah Space Grant Consortium
Graphene, a single atom-thick layer of carbon, is a focal point in various research fields due to its unique properties. With researchers developing new methods to create this material, it's crucial to establish tools to confirm the authenticity of graphene samples.
Increasing Rocket Reusability Via Guided Recovery Systems, Chandler Taylor
Increasing Rocket Reusability Via Guided Recovery Systems, Chandler Taylor
Utah Space Grant Consortium
As rocketry continues to emphasize reusability and cost-effectiveness, the question arises: how can these goals be achieved in the context of sounding rockets? One promising method is the use of air brakes. These systems can serve multiple purposes, such as assisting in stage separation or guiding a rocket safely back to the ground. Much of the recent air brake testing has taken place at events like the Intercollegiate Rocket Engineering Competition (IREC), often to meet specific altitude targets. But this paper aims to use air brakes to increase the rockets recoverability and reusability by employing air brake gird fins to …
High-Velocity Pulsar Kicks Via Anisotropic Neutrino Emission, Tate R. Thomas, Alexander M. Panin
High-Velocity Pulsar Kicks Via Anisotropic Neutrino Emission, Tate R. Thomas, Alexander M. Panin
Utah Space Grant Consortium
Observations reveal that some neutron stars (NS) exhibit high velocities, reaching over 1000 km/s in some instances. This cannot be attributed to the orbital velocity of the NS around our Milky Way galaxy, as it is around 250 km/s on average. The origin of this phenomenon, known as a pulsar kick, is not fully understood and remains a subject of debate among astrophysicists.
During NS formation, the rotation and strong (potentially asymmetric) magnetic field of its progenitor star may result in an asymmetric collapse of the star's core plasma. If this is the case, we might anticipate the formation of …
Vocs In Heat-Stressed Poplar-Mycorrhizae Systems, Luis Valdez, Peter Doust, Kastin Ricord
Vocs In Heat-Stressed Poplar-Mycorrhizae Systems, Luis Valdez, Peter Doust, Kastin Ricord
Utah Space Grant Consortium
Plants release volatile organic compounds (VOCs) as gases into the atmosphere, including small molecules like alcohols, ketones, and terpenes, as well as products of the lipoxygenase (LOX) and the mevalonate (MVP) metabolic pathways.
Increased Angle Space For A Fourier Scatter Microscope Via Simultaneous Axial And Off-Axis Imaging, Haley Blackburn, Marren Williams, Vincent M. Rossi
Increased Angle Space For A Fourier Scatter Microscope Via Simultaneous Axial And Off-Axis Imaging, Haley Blackburn, Marren Williams, Vincent M. Rossi
Utah Space Grant Consortium
Fourier Scatter Imaging (FSI) has proven to be an innovative tool for measuring particle size. This research incorporates Fourier optics into a scatter imaging system with the addition of an off-axis pathway in a Fourier Scatter Microscope. The system uses 0.28 numerical aperture (NA) long working distance objectives that provide angular resolution over +/- 16.3° in the forward direction and 90° +/- 16.3° in the off-axis direction. This setup enables simultaneous capture of axial and off-axis scatter signals using a shared camera, significantly enhancing the angular scattering measurement capabilities. This proof-of-principle system demonstrates the potential for improvements in scattering image …
Untethered And Modular Inflatable Robot For Lunar Applications, James Wade, Chris Paul, Mihai Stanciu, Jared Berger, Spencer Stowell, Henry Smith, Kaitlyn Bell, Simon Charles, Logan Yang, Ashleigh Cerven, Jayden Coe, Brian Bodily, Lais Olivera, Eli Francom, Annie O'Bryan, Bryce Parkinson, Ivyann Running, Jake Sutton, Adam Rose, Katie Varela
Untethered And Modular Inflatable Robot For Lunar Applications, James Wade, Chris Paul, Mihai Stanciu, Jared Berger, Spencer Stowell, Henry Smith, Kaitlyn Bell, Simon Charles, Logan Yang, Ashleigh Cerven, Jayden Coe, Brian Bodily, Lais Olivera, Eli Francom, Annie O'Bryan, Bryce Parkinson, Ivyann Running, Jake Sutton, Adam Rose, Katie Varela
Utah Space Grant Consortium
Sustained operations on the moon will require robotic structures that can perform tasks like building solar arrays and habitats, servicing equipment, exploring, or rescuing astronauts.
Cubesat Attitude Determination And Control System, Michael Evans, Seth Nelson, Sarahi Ortega, Harrison Thomas, Eero Ward, Weston Willardson, Michael Williams
Cubesat Attitude Determination And Control System, Michael Evans, Seth Nelson, Sarahi Ortega, Harrison Thomas, Eero Ward, Weston Willardson, Michael Williams
Utah Space Grant Consortium
Develop a compact, low-mass, low-power, inexpensive Altitude Determination and Control System suitable for a student-class 1U CubeSat
University Rover Challenge, Brendan Bakker, Ethan Blaylock, Jacob Boyer, Elias Clawson, Michael Crandall, Tyson Drake, Sterling Durrant, Hailee Dyer, Avary Fielding, Alanamae Holladay Fielding, Alyssa Fielding, Michael Gasaway, Seth Grayson, Kendall Green, Chloe Hilton, Trevor Johnson, Josh Mcconaghie, Mitch Mcentire, Braden Meyers, Josh Miller, Chris Paul, Sarah Sanderson, Gabe Slade, Hannah Spigarelli, Jackson Steed
University Rover Challenge, Brendan Bakker, Ethan Blaylock, Jacob Boyer, Elias Clawson, Michael Crandall, Tyson Drake, Sterling Durrant, Hailee Dyer, Avary Fielding, Alanamae Holladay Fielding, Alyssa Fielding, Michael Gasaway, Seth Grayson, Kendall Green, Chloe Hilton, Trevor Johnson, Josh Mcconaghie, Mitch Mcentire, Braden Meyers, Josh Miller, Chris Paul, Sarah Sanderson, Gabe Slade, Hannah Spigarelli, Jackson Steed
Utah Space Grant Consortium
Our objective is to produce a rover that will score 95 points in the University Rover Challenge (URC) SAR, have no mechanical or electrical failures during the competition, and consistently score at least 80 points in each of the URC missions. These missions are as follows:
Byu Rocketry: 2024 Irec & Spaceport America Cup, Casey Gooch, Spencer Stowell, Taylor Anderton, Aidan Rice, Zach Lyman, Haylee Sevy, Nathan Butler, Brad Hornfischer, Tyson Butterfield, Joshua Taylor, Gabe Slade, Barry Creighton
Byu Rocketry: 2024 Irec & Spaceport America Cup, Casey Gooch, Spencer Stowell, Taylor Anderton, Aidan Rice, Zach Lyman, Haylee Sevy, Nathan Butler, Brad Hornfischer, Tyson Butterfield, Joshua Taylor, Gabe Slade, Barry Creighton
Utah Space Grant Consortium
BYU Rocketry competed in the 2024 IREC competition at the Spaceport America Cup in June 2024 in the 10,000 ft commercial motor category. The 12.5 ft and 67 lb. rocket, Alta, beckons to BYU Rocketry's past while honoring some of Utah's most towering peaks.
Byu Rocketry: 2025 International Rocket Engineering Competition, Barry Creighton, Tyson Butterfield, Haylee Sevy, Brian Bodily, Max Coverston, Bryant Neuvert, Sam Bridge, Matt Taylor, Caleb Fears, Andrew Mcdonald, Tj Neyman
Byu Rocketry: 2025 International Rocket Engineering Competition, Barry Creighton, Tyson Butterfield, Haylee Sevy, Brian Bodily, Max Coverston, Bryant Neuvert, Sam Bridge, Matt Taylor, Caleb Fears, Andrew Mcdonald, Tj Neyman
Utah Space Grant Consortium
BYU Rocketry will compete in the 2025 IREC competition near Midland, Texas in in the 30,000 ft commercial motor category. The 10 ft and 76 lb. rocket, Escalante, is a tribute to the red rocks of southern Utah and is our next step on the staircase of progress as we attempt to go higher and faster than ever before.
Gasrats Cubesat Transparent Antenna Payload, Ethan Wayland, Tyler Day, Jaret Riggs
Gasrats Cubesat Transparent Antenna Payload, Ethan Wayland, Tyler Day, Jaret Riggs
Utah Space Grant Consortium
The Get Away Special Radio and Antenna Transparency Satellite (GASRATS) is a technology demonstration CubeSat designed and built by the USU Get Away Special Student Satellite Team. The project involves a state-wide outreach program and has been accepted for NASA's CubeSat Launch Initiative
International Rocket Engineering Competition, Ryan Lewis, Nick Woolsey, Wyatt Daugs, Brandon Williams, Hagen Walker, Ava Wilkey, Alex Nielson, Jared Jones, Ryan Johnson, Ethan Baer, Mike Wendell, Weston Fausett
International Rocket Engineering Competition, Ryan Lewis, Nick Woolsey, Wyatt Daugs, Brandon Williams, Hagen Walker, Ava Wilkey, Alex Nielson, Jared Jones, Ryan Johnson, Ethan Baer, Mike Wendell, Weston Fausett
Utah Space Grant Consortium
The Intercollegiate rocket Engineering Competition (IREC) challenges teams to design, build, and launch a high-powered rocket to a target altitude of 10,000 feet while recovering all components, Our team must integrate propulsion, avionics, recovery, and payload systems within strict safety, budget, and design constraints, demonstrating proficiency and innovation in rocketry.
Lunar Landscaping: Designing A Berm-Building Robot For Nasa Lunabotics, Vincent Banh, Anthony Bolda, Nathaniel Bruns, Brycen Cheney, Samuel Friel, Najman Husaini, Wyatt Jones, Reagan Maughan, Jacob Wilson, Joseph Youngblood
Lunar Landscaping: Designing A Berm-Building Robot For Nasa Lunabotics, Vincent Banh, Anthony Bolda, Nathaniel Bruns, Brycen Cheney, Samuel Friel, Najman Husaini, Wyatt Jones, Reagan Maughan, Jacob Wilson, Joseph Youngblood
Utah Space Grant Consortium
The goal of the NASA Artemis missions are to establish long-term human presence on the moon. This year's NASA Lunabotics competition tasks teams with building robots capable of traversing and landscaping in a simulated Lunar terrain to gather data on Lunar construction. The competition goal is to construct a robot capable of building a berm out of regolith simulant. A diagram of the competition layout is shown in Figure 1.
Cubesat: Structure, Berk Mair, Korbin Burton
Cubesat: Structure, Berk Mair, Korbin Burton
Utah Space Grant Consortium
Design, prototype, redesign, test, and fabricate the best 3U structure for the Utah Tech CubeSat to contain and protect the payload and necessary subsystems.
Cubesat: Communications P.A.R.R. Earth Station, Adam Dimaio, Patrick Robanske, Braden Williams, Ryley Horrocks
Cubesat: Communications P.A.R.R. Earth Station, Adam Dimaio, Patrick Robanske, Braden Williams, Ryley Horrocks
Utah Space Grant Consortium
Designed and prototyped developed an autonomous earth station with RF tracking and SatNOGS integration to enable reliable satellite communication for environmental monitoring.
Real-Time Control System For Hybrid Rocket Performance Analysis, Leonardo Yucra, Taylor Trujillo, Morgan Britton, Ben Albert, Steven Dipani, David Lunde
Real-Time Control System For Hybrid Rocket Performance Analysis, Leonardo Yucra, Taylor Trujillo, Morgan Britton, Ben Albert, Steven Dipani, David Lunde
Utah Space Grant Consortium
The Mechanical Engineering Department at Weber State University is creating a high-temperature materials testbed using hybrid rocket technology for the Miller Advanced Research and Solutions Center. This technology provides enhanced safety and controllability through a control valve, which regulates oxidizer flow to achieve a stable mass flow into the combustion chamber.
Food Delivery Robots On College Campuses: Understanding Consumer Perceptions And Value Dimensions, Hayeon (Hailey) Choi, Hyun-Woo (David) Joung, Eun-Kyong (Cindy) Choi
Food Delivery Robots On College Campuses: Understanding Consumer Perceptions And Value Dimensions, Hayeon (Hailey) Choi, Hyun-Woo (David) Joung, Eun-Kyong (Cindy) Choi
ICHRIE Research Reports
The integration of autonomous delivery robots in the foodservice industry offers a promising innovation for enhancing delivery efficiency. College campuses, with their controlled environments and predictable layouts, serve as optimal testing grounds for these robots. This study examines the multifaceted values influencing the adoption and perception of food delivery robots on college campuses, providing insights for industry stakeholders. Findings indicate that functional and emotional values play the most significant role in shaping consumer perceptions, followed by price, novelty, and social values. However, preferences vary based on gender and role (students and faculty/staff), highlighting the need for targeted marketing strategies. These …
Sustainable Tourism In Kenya: An Analysis Of Tourism Policy Currently Under Consideration, Jacquelyne Muhati
Sustainable Tourism In Kenya: An Analysis Of Tourism Policy Currently Under Consideration, Jacquelyne Muhati
Journal of African Policy Studies
This paper examines tourism policy in Kenya in the context of sustainable tourism development. It considers the critical factors that might hinder the development of the sector and highlights the shortcomings in the policy development. It will give a general review of policy development and its significance in Kenya. There will also be an analysis of the key issues in the current policy development in Kenya, and finally, consideration is given to the aspects of policy that the current policy makers should pay attention to in relation to the strategic approach to sustainable tourism development. With the growing economic significance …
The Challenge Of Crafting And Maintaining Democracy In Zimbabwe And South Africa, Robert W. Compton Jr.
The Challenge Of Crafting And Maintaining Democracy In Zimbabwe And South Africa, Robert W. Compton Jr.
Journal of African Policy Studies
This paper examines the impact of land reform policies on the political development of South Africa and Zimbabwe. In particular, it focuses on the past policy approaches to land reform, principally the "willing seller and able buyer" market approach in the context of past injustices involving land reform. The politics of land reform and the inability of the hegemonic parties in South Africa and Zimbabwe, the African national Congress (ANC) and Zimbabwe African National Union (ZANU) respectively, to implement satisfactory policy contributes to negative political and economic consequences for both countries. Simultaneously, opposition parties in both countries, in particular the …
The Future Of Monetary Integration In Southern Africa: Lessons From The European Union?, Richard Dutu, Donald L. Sparks
The Future Of Monetary Integration In Southern Africa: Lessons From The European Union?, Richard Dutu, Donald L. Sparks
Journal of African Policy Studies
The 14-member Southern African Development Community (SADC) has a long-term goal of becoming a full common market. A major component of fuller integration would be a common currency arrangement. The states of southern Africa, however, face a dilemma: While the region already sustains a successful and long-running monetary union, the Common Monetary Area (CMA, known as the "Rand Zone"), the region's leading economic integration organization, the SADC, is opposed to joining the union.
The Common Market for East and Southern Africa (COMESA)—a less successful, but rival economic organization—favors, for its part, a monetary union. Is the SADC ready for monetary …
Smes In Developing Countries And The Problem Of Exporting: Market Entry Costs, Exchange Rate Shocks And The Capital Structure Of Firms, Trond-Arne Borgersen
Smes In Developing Countries And The Problem Of Exporting: Market Entry Costs, Exchange Rate Shocks And The Capital Structure Of Firms, Trond-Arne Borgersen
Journal of African Policy Studies
This paper integrates a sunk-cost model of foreign trade with a discussion on the capital structure of small and medium-sized enterprises (SMEs) in developing countries. A model of foreign trade where firms have to incur irrecoverable market entry costs in international markets is presented. As a result of the market entry costs the foreign trade structure is non-linear. This non-linearity complicates the relationship between foreign trade flows and exchange rates, compared to the predictions of conventional foreign trade theory. Both the entry and the operating decision are affected, as the non-linearity puts pressure on the capital structure of firms. In …
Cover And Table Of Contents, Institute On African Affairs
Cover And Table Of Contents, Institute On African Affairs
Journal of African Policy Studies
No abstract provided.
Determining The Effectiveness Of An Educational Intervention On Self-Management Behaviors Of Adults With Type 2 Diabetes At A Rural Clinic: A Quality Improvement Project, Stacy L. Harvey
Dissertations
Diabetes Mellitus Type 2 (T2DM) has the highest mortality deaths, and these are projected to increase over the years. Living with diabetes can be very stressful to manage because of the complexity and required multidisciplinary approach required for effective health maintenance and lifestyle management. Diabetes self-management education programs are essential for improved glucose control and the goal is to help patients improve their lifestyle choices through knowledge of the disease for effective self-management behaviors in the essential areas of diet, exercise, glucose monitoring, medication and cooperation with the diabetes team.
Washington Report: Aicpa Comments On Treasury Proposal To Limit Use Of The Cash Method Of Accounting, Kenneth F. Thomas, Carol B. Ferguson, American Institute Of Certified Public Accountants
Washington Report: Aicpa Comments On Treasury Proposal To Limit Use Of The Cash Method Of Accounting, Kenneth F. Thomas, Carol B. Ferguson, American Institute Of Certified Public Accountants
Tax Adviser
No abstract provided.
Preservation And Tax Benefits, D. Larry Crumbley, Anthony Billings
Preservation And Tax Benefits, D. Larry Crumbley, Anthony Billings
Tax Adviser
No abstract provided.
Tax Clinic, Daniel F. Kruger
Trade Or Business Requirement Under Sec. 174 After Green, Gregory V. Gadarian, James H. Dezart
Trade Or Business Requirement Under Sec. 174 After Green, Gregory V. Gadarian, James H. Dezart
Tax Adviser
No abstract provided.
Estate Planning: Significant Recent Developments Concerning Estate Planning (Part Ii), Byrle M. Abbin, David K. Carlson
Estate Planning: Significant Recent Developments Concerning Estate Planning (Part Ii), Byrle M. Abbin, David K. Carlson
Tax Adviser
No abstract provided.