Open Access. Powered by Scholars. Published by Universities.®

Physical Sciences and Mathematics Commons

Open Access. Powered by Scholars. Published by Universities.®

2017

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 1621 - 1650 of 12521

Full-Text Articles in Physical Sciences and Mathematics

Measurement Of Speed Of Sound Profile Using Laaces Balloon, Zhuang Li, Brett Schaefer, Brian Schaefer, William Dever, Tyler Morgan, Matthew Foltz Oct 2017

Measurement Of Speed Of Sound Profile Using Laaces Balloon, Zhuang Li, Brett Schaefer, Brian Schaefer, William Dever, Tyler Morgan, Matthew Foltz

2017 Academic High Altitude Conference

The goal of this mission is to test the speed of sound at different altitudes and ultimately at a maximum height of 100,000 feet (30 km). In conjunction with this testing, environmental parameters including temperature, pressure, and humidity are measured and used to calculate the speed of sound to compare to the measured results. The team constructed the payload “Dorothy” using polystyrene foam due to its lightweight and thermal isolation property. An ultrasonic sensor with a reflection mirror were installed outside payload box to measure speed of sound. All the sensors were calibrated. Software for the project was developed in …


Calibration Of Temperature Sensors In Preparation For The 2017 Total Solar Eclipse, Erick Agrimson, Kaye Smith, Ana Taylor, Vina Onyango-Robshaw, Rachel Lang, Alynie Xiong, Peace Sinyigaya, Grace Maki, Rachel Dubose, Brittany Craig, James Flaten, Gordon Mcintosh Oct 2017

Calibration Of Temperature Sensors In Preparation For The 2017 Total Solar Eclipse, Erick Agrimson, Kaye Smith, Ana Taylor, Vina Onyango-Robshaw, Rachel Lang, Alynie Xiong, Peace Sinyigaya, Grace Maki, Rachel Dubose, Brittany Craig, James Flaten, Gordon Mcintosh

2017 Academic High Altitude Conference

In preparation for the 2017 total solar eclipse, St. Catherine University developed a calibration protocol for the temperature sensors flown during thermal wake boom experiments. The calibration method used a standard two-point technique that corrected each individual sensor for both slope and offset errors using a high quality NIST certified thermocouple as the temperature standard. Our method is not absolute but corrects each sensor relative to the NIST standard so that we feel some confidence that individual sensor variations are mitigated. In preparation for the eclipse, calibration curves were generated for over 200 individual digital and thermistor temperature sensors.


Use And Implementation Of The Automatic Packet Reporting System (Aprs) On High Altitude Payloads., Sam Fink, Robert Moody, Carson Keeter, Cassandra Runyon, Cyndi Hall Oct 2017

Use And Implementation Of The Automatic Packet Reporting System (Aprs) On High Altitude Payloads., Sam Fink, Robert Moody, Carson Keeter, Cassandra Runyon, Cyndi Hall

2017 Academic High Altitude Conference

Once a weather balloon enters the uncontrollable realm of nature upon release it is subject to a high degree of freedom and flight path options. Passive tracking methods become essential to physically follow the trajectory, the balloon, and its payload. The Automatic Packet Reporting System (APRS) provides an ideal platform for tracking high-altitude and low earth orbit instrumentation because at zenith there is no radio horizon. Demonstrated aboard the International Space Station, this simple system provides the maximum tracking range at very low power and cost with very high accuracy, by utilizing existing federally funded infrastructure. An amateur radio license …


Pressure Regulator For A High Altitude Balloon, Kala Brown, Darci Snowden, Joe Cuthbertson, Jessica Kisner, Addison Wenger Oct 2017

Pressure Regulator For A High Altitude Balloon, Kala Brown, Darci Snowden, Joe Cuthbertson, Jessica Kisner, Addison Wenger

2017 Academic High Altitude Conference

High altitude balloons are large latex balloons filled with gas that carry a payload to near space. Because they can travel to around 100,000 feet, they provide a convenient way to study the Earth’s atmosphere. Per Boyle’s Law, the pressure and volume of a confined gas are inversely proportional. Thus, as the balloon ascends and the atmospheric pressure decreases, the gas inside the balloon expands. This pressure difference allows the balloon to ascend, but it also causes it to continuously expand until it bursts. For some observations, one might want their balloon to remain at about the same altitude for …


Controlled Heading Automation Device, Robert Coulson Oct 2017

Controlled Heading Automation Device, Robert Coulson

2017 Academic High Altitude Conference

One of the most significant limitations of weather balloon-based data collection is that instruments and payloads cannot depend on particular orientations or predictable rotation. Several investigators have used payload heading control devices to overcome this limitation in order to collect directional data and record motion controlled video footage. The work described in this presentation builds on the Controlled Heading Automation Device (CHAD) developed by Kruger et al. (2016) and was carried out at DePaul University in summer 2017 as an undergraduate research project. Our goal was to record stable video of the shadow of the moon on Earth’s surface during …


Eclipse Ballooning Stem Outreach For Elementary, Middle, And High School Education, Peter Henson, Fnu Anamika, Denise Buckner, Marissa Saad, Caitlin Nolby Oct 2017

Eclipse Ballooning Stem Outreach For Elementary, Middle, And High School Education, Peter Henson, Fnu Anamika, Denise Buckner, Marissa Saad, Caitlin Nolby

2017 Academic High Altitude Conference

To promote Science, Technology, Engineering and Mathematics (STEM) education through ballooning, the North Dakota Space Grant Consortium (NDSGC) organizes an annual Near-Space Balloon Competition (NSBC) for students in grades 6 - 12. Students across the state of North Dakota have the opportunity to launch experiments into a near- space environment. The students learn how to write proposals, design payloads, and analyze data. They learn through an active, inquiry-based style that will prepare them for real-world engineering and critical thinking jobs. In 2016, NSBC proposed Great American Eclipse as the theme for the competition, thus the students were focused on designing …


Impactful Practice: Lessons Learned Through Ballooning Outreach, Tracy Knowles, Leandro Braga, Alex Eberle, Tom Busby, John Paul Beard, Jessica Glasscock, Jacolby Gardner, Matt Smither Oct 2017

Impactful Practice: Lessons Learned Through Ballooning Outreach, Tracy Knowles, Leandro Braga, Alex Eberle, Tom Busby, John Paul Beard, Jessica Glasscock, Jacolby Gardner, Matt Smither

2017 Academic High Altitude Conference

The goal of Bluegrass Community and Technical College’s (BCTC) Eclipse Outreach Ambassador Project was to get students across the Bluegrass excited and educated about the 2017 total solar eclipse. Several years ago the BalloonSat Project was started to provide hands-on earth and atmospheric science experiences to BCTC students. In linking the two initiatives, we allowed BCTC BalloonSat team members to continue learning to design, build, test, fly and retrieve balloon-borne payloads while using a novel method by which to engage local elementary and middle school students in learning more about and anticipating the upcoming eclipse. Eclipse practice flights carried payloads …


Placing A High-Altitude Balloon In The Path Of Totality, Nicholas Jordan, Christopher Helmerich Oct 2017

Placing A High-Altitude Balloon In The Path Of Totality, Nicholas Jordan, Christopher Helmerich

2017 Academic High Altitude Conference

The UAH Space Hardware Club had conducted 70 flights prior to the Eclipse. In this time, we have gained valuable skills and experience which we have put into practice and passed on through the years. We put these skills into practice for the Eclipse. Our first challenge was finding where to launch. We started out by looking for suitable locations inside totality. We also examined a map of totality at 80,000 ft. We then ran predictions based on past weather during that time of year. By compiling multiple past predictions, we eliminated possible launch sites. We had multiple payloads, some …


Opportunities For Undergraduate Research In Nuclear Physics, S. F. Hicks, T. D. Nguyen, D. T. Jackson, S. G. Block, S. T. Byrd, M. T. Nickel, J. R. Vanhoy, Erin E. Peters, Anthony Paul Ramirez, Marcus T. Mcellistrem, Sharmistha Mukhopadhyay, Steven W. Yates Oct 2017

Opportunities For Undergraduate Research In Nuclear Physics, S. F. Hicks, T. D. Nguyen, D. T. Jackson, S. G. Block, S. T. Byrd, M. T. Nickel, J. R. Vanhoy, Erin E. Peters, Anthony Paul Ramirez, Marcus T. Mcellistrem, Sharmistha Mukhopadhyay, Steven W. Yates

Chemistry Faculty Publications

University of Dallas (UD) physics majors are offered a variety of undergraduate research opportunities in nuclear physics through an established program at the University of Kentucky Accelerator Laboratory (UKAL). The 7-MV Model CN Van de Graaff accelerator and the neutron production and detection facilities located there are used by UD students to investigate how neutrons scatter from materials that are important in nuclear energy production and for our basic understanding of how neutrons interact with matter. Recent student projects include modeling of the laboratory using the neutron transport code MCNP to investigate the effectiveness of laboratory shielding, testing the long-term …


High-Statistics Β+/Ec-Decay Study Of 122Xe, B. Jigmeddorj, P. E. Garrett, C. A. Andreoiu, G. C. Ball, T. Bruhn, D. S. Cross, A. B. Garnsworthy, B. Hadinia, M. Moukaddam, J. Park, J. L. Pore, A. J. Radich, M. M. Rajabali, E. T. Rand, U. Rizwan, C. E. Svensson, P. Voss, Z. Wang, J. L. Wood, Steven W. Yates Oct 2017

High-Statistics Β+/Ec-Decay Study Of 122Xe, B. Jigmeddorj, P. E. Garrett, C. A. Andreoiu, G. C. Ball, T. Bruhn, D. S. Cross, A. B. Garnsworthy, B. Hadinia, M. Moukaddam, J. Park, J. L. Pore, A. J. Radich, M. M. Rajabali, E. T. Rand, U. Rizwan, C. E. Svensson, P. Voss, Z. Wang, J. L. Wood, Steven W. Yates

Chemistry Faculty Publications

Low-lying excited states of 122Xe have been studied via the β+/EC decay of 122Cs with the 8π γ-ray spectrometer at the TRIUMF Isotope Separator and Accelerator facility. The data collected have enabled the observation of new in-band transitions in the excited 0+ state bands. In addition, the 2+ members of the second 0+ and third 0+ state bands have been firmly confirmed by angular correlation analysis.


Organelle-Specific Single-Molecule Imaging Of Α4Β2 Nicotinic Receptors Reveals The Effect Of Nicotine On Receptor Assembly And Cell-Surface Trafficking, Ashley M. Fox-Lee, Faruk H. Moonschi, Christopher I. Richards Oct 2017

Organelle-Specific Single-Molecule Imaging Of Α4Β2 Nicotinic Receptors Reveals The Effect Of Nicotine On Receptor Assembly And Cell-Surface Trafficking, Ashley M. Fox-Lee, Faruk H. Moonschi, Christopher I. Richards

Chemistry Faculty Publications

Nicotinic acetylcholine receptors (nAChRs) assemble in the endoplasmic reticulum (ER) and traffic to the cell surface as pentamers composed of α and β subunits. Many nAChR subtypes can assemble with varying subunit ratios, giving rise to multiple stoichiometries exhibiting different subcellular localization and functional properties. In addition to the endogenous neurotransmitter acetylcholine, nicotine also binds and activates nAChRs and influences their trafficking and expression on the cell surface. Currently, no available technique can specifically elucidate the stoichiometry of nAChRs in the ER versus those in the plasma membrane. Here, we report a method involving single-molecule fluorescence measurements to determine the …


Adaptation Of Legacy Computer Science Complexity Metrics To Sysml Diagrams, Victor Lopez Oct 2017

Adaptation Of Legacy Computer Science Complexity Metrics To Sysml Diagrams, Victor Lopez

Von Braun Symposium Student Posters

No abstract provided.


Applications Of Nasa Earth Observations For Monitoring Surface Water Availability For Pastoralists In Remote Regions Of Tahoua, Niger, Kelsey E. Herndon, Rebekke Muench, Emil Cherrington, Robert Griffin Oct 2017

Applications Of Nasa Earth Observations For Monitoring Surface Water Availability For Pastoralists In Remote Regions Of Tahoua, Niger, Kelsey E. Herndon, Rebekke Muench, Emil Cherrington, Robert Griffin

Von Braun Symposium Student Posters

No abstract provided.


Apollo 17 Lunar Surface Gravimeter: A New Moonquake Catalog And Implications Of Expanding The Passive Seismic Array, Deanna Phillips, Jesse-Lee Dimech, Renee Weber Oct 2017

Apollo 17 Lunar Surface Gravimeter: A New Moonquake Catalog And Implications Of Expanding The Passive Seismic Array, Deanna Phillips, Jesse-Lee Dimech, Renee Weber

Von Braun Symposium Student Posters

No abstract provided.


Angle-Scanning Spectropolarimetry: From The Ultraviolet To The Infrared, Sahar A. Nouri Oct 2017

Angle-Scanning Spectropolarimetry: From The Ultraviolet To The Infrared, Sahar A. Nouri

Von Braun Symposium Student Posters

No abstract provided.


Autonomous Solid-State Radiation Detector For Safety Of Aerospace Systems, Levi Davies, Biswajit Ray Oct 2017

Autonomous Solid-State Radiation Detector For Safety Of Aerospace Systems, Levi Davies, Biswajit Ray

Von Braun Symposium Student Posters

No abstract provided.


Assessing Time-Weighted Dynamic Time Warping As A Method For Land Cover Classification Utilizing Nasa Satellite Imagery, Ronan Lucey Oct 2017

Assessing Time-Weighted Dynamic Time Warping As A Method For Land Cover Classification Utilizing Nasa Satellite Imagery, Ronan Lucey

Von Braun Symposium Student Posters

No abstract provided.


Developing An Anti-Coincidence Shielding System For Hard X-Ray Detection In A Balloon-Borne Telescope, Active Luminescence For X-Ray Emission Detection (Alfred) Team Oct 2017

Developing An Anti-Coincidence Shielding System For Hard X-Ray Detection In A Balloon-Borne Telescope, Active Luminescence For X-Ray Emission Detection (Alfred) Team

Von Braun Symposium Student Posters

No abstract provided.


Developing The Terrestrial Rays Analysis And Detection (Tryad) Science Instrument, Lucas Capps, Jared Fuchs Oct 2017

Developing The Terrestrial Rays Analysis And Detection (Tryad) Science Instrument, Lucas Capps, Jared Fuchs

Von Braun Symposium Student Posters

No abstract provided.


Development Of A Gamma-Ray Scattering Polarimetry Detector For Cubesats, Jared Fuchs, Lucas Capps, Kyle Renfroe Oct 2017

Development Of A Gamma-Ray Scattering Polarimetry Detector For Cubesats, Jared Fuchs, Lucas Capps, Kyle Renfroe

Von Braun Symposium Student Posters

No abstract provided.


Identifying Sources Of Low-Spatial Frequency Figure Errors In Full-Shell X-Ray Optics, Samantha Johnson, Wayne Baumgartner Oct 2017

Identifying Sources Of Low-Spatial Frequency Figure Errors In Full-Shell X-Ray Optics, Samantha Johnson, Wayne Baumgartner

Von Braun Symposium Student Posters

No abstract provided.


Radiation Detection In Various High Altitude Environments, C Wolfe, J Miller, I Slamen, T Jamison, Christopher Helmerich, Everett Cavanaugh, Sarah Dangelo, Sean Widmier, Elena Pradhan Oct 2017

Radiation Detection In Various High Altitude Environments, C Wolfe, J Miller, I Slamen, T Jamison, Christopher Helmerich, Everett Cavanaugh, Sarah Dangelo, Sean Widmier, Elena Pradhan

Von Braun Symposium Student Posters

No abstract provided.


Rapid Atmospheric Boundary Layer Evolution During The Great American Solar Eclipse Of 2017, Preston Pangle, Ryan Wade Oct 2017

Rapid Atmospheric Boundary Layer Evolution During The Great American Solar Eclipse Of 2017, Preston Pangle, Ryan Wade

Von Braun Symposium Student Posters

No abstract provided.


Verification And Enhancement Of Viirs Day-Night Band (Dnb) Power Outagedetection Product, Angela Burke, Robert Griffin, Lori Schultz, Andrew Molthan Oct 2017

Verification And Enhancement Of Viirs Day-Night Band (Dnb) Power Outagedetection Product, Angela Burke, Robert Griffin, Lori Schultz, Andrew Molthan

Von Braun Symposium Student Posters

No abstract provided.


The Santa Clara, 2017-10-26, Santa Clara University Oct 2017

The Santa Clara, 2017-10-26, Santa Clara University

The Santa Clara

No abstract provided.


Single Versus Concurrent Systems: Nominal Classification In Mian, Greville G. Corbett, Sebastian Fedden, Raphael Finkel Oct 2017

Single Versus Concurrent Systems: Nominal Classification In Mian, Greville G. Corbett, Sebastian Fedden, Raphael Finkel

Computer Science Faculty Publications

The Papuan language Mian allows us to refine the typology of nominal classification. Mian has two candidate classification systems, differing completely in their formal realization but overlapping considerably in their semantics. To determine whether to analyse Mian as a single system or concurrent systems we adopt a canonical approach. Our criteria – orthogonality of the systems (we give a precise measure), semantic compositionality, morphosyntactic alignment, distribution across parts of speech, exponence, and interaction with other features – point mainly to an analysis as concurrent systems. We thus improve our analysis of Mian and make progress with the typology of nominal …


Water Clarity Patterns And Trends In The Open-Water Regions Of Chesapeake Bay And Its Tidal Tributaries, Carl T. Friedrichs Oct 2017

Water Clarity Patterns And Trends In The Open-Water Regions Of Chesapeake Bay And Its Tidal Tributaries, Carl T. Friedrichs

Presentations

No abstract provided.


Simplifying Sample Preparation Using Fabric Phase Sorptive Extraction: Analysis Of Trace Targeted Pollutant Residues In Environmental, Biological And Food Samples, Rodolfo Mesa Oct 2017

Simplifying Sample Preparation Using Fabric Phase Sorptive Extraction: Analysis Of Trace Targeted Pollutant Residues In Environmental, Biological And Food Samples, Rodolfo Mesa

FIU Electronic Theses and Dissertations

Sample preparation is an essential component of analytical methods in chemistry. It is not only necessary but also presents an opportunity to increase the effectiveness of the method significantly. There are various commercially available technologies for sample preparation, including numerous variations of LLE, SPE, and SPME. However, these technologies all present significant deficiencies, including the inability to extract directly from complex samples such as whole milk. Instrumental analysis has been improved greatly in the last two decades but still is not applicable to complex samples without sample preparation.

This work presents the theory of FPSE, including the synthesis of sol-gel …


A Framework For Incorporating The Impact Of Water Quality On Water Supply Stress: An Example From Louisiana, David M. Borrok, Jian Chen, Hisham Eldardiry, Emad Habib Oct 2017

A Framework For Incorporating The Impact Of Water Quality On Water Supply Stress: An Example From Louisiana, David M. Borrok, Jian Chen, Hisham Eldardiry, Emad Habib

Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works

Water of poor quality can directly impact the budget of water available for key user groups. Despite this importance, methods for quantifying the impact of water quality on water availability remain elusive. Here, we develop a new framework for incorporating the impact of water quality on water supply by modifying the Water Supply Stress Index (WaSSI). We demonstrate the usefulness of the framework by investigating the impact of high salinity waters on the availability of irrigation water for agriculture in Louisiana. The WaSSI was deconstructed into sectoral components such that the total available water supply could be reduced for a …


Resilient And Real-Time Control For The Optimum Management Of Hybrid Energy Storage Systems With Distributed Dynamic Demands, Christopher R. Lashway Oct 2017

Resilient And Real-Time Control For The Optimum Management Of Hybrid Energy Storage Systems With Distributed Dynamic Demands, Christopher R. Lashway

FIU Electronic Theses and Dissertations

A continuous increase in demands from the utility grid and traction applications have steered public attention toward the integration of energy storage (ES) and hybrid ES (HESS) solutions. Modern technologies are no longer limited to batteries, but can include supercapacitors (SC) and flywheel electromechanical ES well. However, insufficient control and algorithms to monitor these devices can result in a wide range of operational issues. A modern day control platform must have a deep understanding of the source. In this dissertation, specialized modular Energy Storage Management Controllers (ESMC) were developed to interface with a variety of ES devices. The EMSC provides …