The Allure Of Mathematics Or Book Review: Seduced By Logic: E ́Milie Du ChˆAtelet, Mary Somerville, And The Newtonian Revolution, By Robyn Arianrhod, Elizabeth A. Lamprecht
Journal of Humanistic Mathematics
Today, there is a tendency to overlook the contributions of women such as Émilie du Châtelet and Mary Somerville; yet, despite numerous obstacles, they were able to make meaningful contributions to science. This review of Robyn Arianrhod’s book provides brief biographical summaries of the lives of these extraordinary women. It also considers some of the ramifications of Isaac Newton’s theory.
Throughout history, various factors have impeded women from full participation in scientific research; nevertheless, Émilie du Châtelet and Mary Somerville found and took advantage of opportunities to engage in scientific activities. This raises the question: had these women ...
The Differentialgeometry Package, 2016 Utah State University
The Differentialgeometry Package, Ian M. Anderson, Charles G. Torre
This is the entire DifferentialGeometry package, a zip file (DifferentialGeometry.zip) containing (1) a Maple Library file, DifferentialGeometryUSU.mla, (2) a Maple help file DifferentialGeometry.help. This is the latest version of the DifferentialGeometry software; it supersedes what is released with Maple. It has been tested on Maple versions 17, 18, 2015.
Evidence Of Dispersion And Refraction Of A Spectrally Broad Gravity Wave Packet In The Mesopause Region Observed By The Na Lidar And Mesospheric Temperature Mapper Above Logan, Utah (In Press), 2016 Embry-Riddle Aeronautical University - Daytona Beach
Evidence Of Dispersion And Refraction Of A Spectrally Broad Gravity Wave Packet In The Mesopause Region Observed By The Na Lidar And Mesospheric Temperature Mapper Above Logan, Utah (In Press), T. Yuan, C. J. Heale, J. B. Snively, X. Cai, P. -D. Pautet, C. Fish, Y. Zhao, M, J, Taylor, W. R. Pendelton Jr., V. Wickwar, N. J. Mitchell, T. Yuan, C. J. Heale, J. B. Snively, X. Cai, P. -D. Pautet, C. Fish, Y. Zhao, M. J. Taylor, W. R. Pendelton, Jr., V. Wickwar, N. J. Mitchell
Jonathan B. Snively
Pre-Mission Input Requirements To Enable Successful Sample Collection By A Remote Field/Eva Team, 2015 NASA Marshall Space Flight Center
Pre-Mission Input Requirements To Enable Successful Sample Collection By A Remote Field/Eva Team, Barbara A. Cohen, Darlene S. S. Lim, Kelsey E. Young, Anna Brunner, Richard C. Elphic, Audrey Horne, Mary C. Kerrigan, Gordon O. Osinski, John R. Skok, Steven W. Squyres, David Saint-Jacques, Jennifer L. Heldmann
Journal of Human Performance in Extreme Environments
We used a field excursion to the West Clearwater Lake Impact structure as an opportunity to test factors that contribute to the decisions a remote field team (for example, astronauts conducting extravehicular activities (EVA) on planetary surfaces) makes while collecting samples for return to Earth. We found that detailed background on the analytical purpose of the samples, provided to the field team, enables them to identify and collect samples that meet specific analytical objectives. However, such samples are not always identifiable during field reconnaissance activities, and may only be recognized after outcrop characterization and interpretation by crew and/or science ...
Solar Modulation Of The Cosmic Ray Intensity And The Measurement Of The Cerenkov Reemission In Nova’S Liquid Scintillator, 2015 University of Tennessee - Knoxville
Solar Modulation Of The Cosmic Ray Intensity And The Measurement Of The Cerenkov Reemission In Nova’S Liquid Scintillator, Philip James Mason
The NOνA (NuMI Off-axis electron neutrino Appearance) experiment is a long baseline neutrino oscillation experiment at Fermi National Accelerator Laboratory. Its purpose is to observe the oscillation of νμ (muon neutrino) to νe (electron neutrino) and to investigate the neutrino mass hierarchy and CP violation in the neutrino sector. Two detectors have been built for this purpose, a Near Detector 300 feet underground at Fermilab, and a Far Detector, on the surface at Ash River, Minnesota.
The completion of NOνA’s Far Detector in October 2014 enabled not only the recent measurement of neutrino oscillations, but an array ...
Neutrino Signatures In Terrestrial Detectors From Two- And Three-Dimensional Core-Collapse Supernovae Simulations, 2015 University of Tennessee - Knoxville
Neutrino Signatures In Terrestrial Detectors From Two- And Three-Dimensional Core-Collapse Supernovae Simulations, Tanner Brooks Devotie
Core-collapse supernovae (CCSNe) are driven by neutrino emission and are the most prodigious sources of neutrinos in the Universe. Importantly, the neutrino radiation from CCSNe is emitted from deep in the explosion and can provide information about physical processes taking place in the newly-born neutron star at the heart of the event. We examine the four-flavor (i.e. νe, νe, νx and νx) [electron, muon and tau neutrinos along with their anti-matter counterparts] signature of CCSNe neutrino emission in various neutrino detector types. We use data from the multidimensional Chimera (Lentz et al., 2015) code (from ...
Sparse Aperture Speckle Interferometry Telescope Active Optics Control System, 2015 California Polytechnic State University
Sparse Aperture Speckle Interferometry Telescope Active Optics Control System, Matthew Clause
Master's Theses and Project Reports
A conventional large aperture telescope required for binary star research is typically cost prohibitive. A prototype active optics system was created and fitted to a telescope frame using relatively low cost components. The active optics system was capable of tipping, tilting, and elevating the mirrors to align reflected star light. The low cost mirror position actuators have a resolution of 31 nm, repeatable to within 16 nm. This is accurate enough to perform speckle analysis for the visible light spectrum. The mirrors used in testing were not supported with a whiffletree and produced trefoil-like aberrations which made phasing two mirrors ...
Construction Of A 408 Nm Laser System For Use In Ion Interferometry, 2015 Brigham Young University - Provo
Construction Of A 408 Nm Laser System For Use In Ion Interferometry, Lawrence Archibald
All Theses and Dissertations
This work reports on the construction of a 408 nm laser system designed to drive stimulated Raman transitions between the F = 4 and F = 5 2 S 1/2 states of 87 Sr + using the 2 P 3/2 state as the intermediate state. This laser system will be used as part of a 87 Sr + ion interferometer. This work also includes a discussion of relevant theory describing the interaction of the ions and laser, along with a calculation of the transition rates as a function of laser power and detuning.
A Determination Of The Gamma-Ray Flux And Photon Spectral Index Distributions Of Blazars From The Fermi-Lat 3lac, 2015 University of Richmond
A Determination Of The Gamma-Ray Flux And Photon Spectral Index Distributions Of Blazars From The Fermi-Lat 3lac, Jack Singal
Physics Faculty Publications
We present a determination of the distributions of gamma-ray photon flux – the so-called LogN–LogS relation – and photon spectral index for blazars, based on the third extragalactic source catalogue of the Fermi Gamma-ray Space Telescope's Large Area Telescope, and considering the photon energy range from 100 MeV to 100 GeV. The data set consists of the 774 blazars in the so-called Clean sample detected with a greater than approximately 7σ detection threshold and located above ±20° Galactic latitude. We use non-parametric methods verified in previous works to reconstruct the intrinsic distributions from the observed ones which account ...
Cosmic Radiation, 2015 Dublin Institute of Technology
Cosmic Radiation, Dr. Anthony J. Keane
The ITB Journal
The planet Earth orbits the Sun in what is often considered to be empty space but is in fact full of very small charged particles speeding in all directions. The situation can be compared to the Earth having to constantly travel in a light shower of rain and with the atmosphere acting like an umbrella. The 'rain' is made up of charged particles called 'Cosmic Rays'. The name cosmic ray was given long ago to invisible ionising radiation that could mysteriously discharge an electroscope even when the electroscope was heavy insulated. Early scientists quickly established a relationship between the rate ...
Excess Mid-Infrared Flux: An Indicator Of Mass Loss In Cepheids?, 2015 University of Nebraska-Lincoln
Excess Mid-Infrared Flux: An Indicator Of Mass Loss In Cepheids?, Edward G. Schmidt
Edward Schmidt Publications
Spectral energy distributions for 132 classical and type II Cepheids were searched for evidence of excess flux above the photospheric level in the mid-infrared. Eight of them were found to have unambiguously strong excess emission while a further 13 showed evidence of weak emission. The presence of emission appears to be unrelated to either the pulsational amplitude or the effective temperature while strong emission is limited to stars with periods longer than 11 days, with a single exception. For the stars with strong emission we attempted to fit the energy distribution with a stellar wind model. No acceptable fit could ...
X-Ray Emission From The Giant Magnetosphere Of The Magnetic O-Type Star Ngc 1624-2, 2015 Florida Institute of Technology - Melbourne
X-Ray Emission From The Giant Magnetosphere Of The Magnetic O-Type Star Ngc 1624-2, V. Petit, D. H. Cohen, G. A. Wade, Y. Naze, S. P. Owocki, J. O. Sundqvist, A. Ud-Doula, A. Fullerton, M. Leutenegger, Marc Gagne
Geology & Astronomy Faculty Publications
No abstract provided.
New Benzene Absorption Cross Sections In The Vuv, Relevance For Titan’S, 2015 (LISA), UMR CNRS 7583
New Benzene Absorption Cross Sections In The Vuv, Relevance For Titan’S, Fernando J. Capalbo, Yves Bénilan, Nicolas Fray, Martin Schwell, Norbert Champion, Et-Touhami Es-Sebbar, Tommi T. Koskinen, Ivan Lehocki, Roger V. Yelle
Dr. Et-touhami Es-sebbar
Benzene is an important molecule in Titan’s atmosphere because it is a potential link between the gas phase and the organic solid phase. We measured photoabsorption in the ultraviolet by benzene gas at temperatures covering the range from room temperature to 215 K. We derived benzene absorption cross sections and analyzed them in terms of the transitions observed. No significant variation with measurement temperature was observed. We discuss the implications of our measurements for the derivation of benzene abundance profiles in Titan’s thermosphere, by the Cassini/Ultraviolet Imaging Spectrograph (UVIS). The use of absorption cross sections at low ...
Nitrogen Abundances In Early-Type Be Stars, 2015 The University of Western Ontario
Nitrogen Abundances In Early-Type Be Stars, Ahmed Ahmed
Electronic Thesis and Dissertation Repository
A sample of 26 Be stars from the Magnetism in Massive Stars (MiMeS) spectroscopic survey are analyzed for their photospheric nitrogen abundances in an effort to detect rotational mixing in the Be stars. Be stars are massive stars, between 3 and 20 times the mass of the Sun, that are surrounded by a thin, equatorial disk of gas that produces emission lines in their optical and near-infrared spectra. Be stars are the most rapidly-rotating stellar population on the main sequence, where stars produce energy by core hydrogen burning. New, non-LTE line transfer calculations are performed for the Nii ion, the ...
Variations In Solar Wind Fractionation As Seen By Ace/Swics And The Implications For Genesis Mission Results, 2015 Los Alamos National Laboratory
Variations In Solar Wind Fractionation As Seen By Ace/Swics And The Implications For Genesis Mission Results, P. Pilleri, Daniel B. Reisenfeld, T. H. Zurbuchen, S. T. Lepri, P. Shearer, J. A. Gilbert, R. Von Steiger, R. C. Wiens
Physics and Astronomy Faculty Publications
We use Advanced Composition Explorer (ACE)/Solar Wind Ion Composition Spectrometer (SWICS) elemental composition data to compare the variations in solar wind (SW) fractionation as measured by SWICS during the last solar maximum (1999-2001), the solar minimum (2006-2009), and the period in which the Genesis spacecraft was collecting SW (late 2001-early 2004). We differentiate our analysis in terms in SW regimes (i.e., originating from interstream or coronal hole flows, or coronal mass ejecta). Abundances are normalized to the low-first ionization potential (low-FIP) ion magnesium to uncover correlations that are not apparent when normalizing to high-FIP ions. We find that ...
Information Literacy & Open Access For Physics And Astronomy Graduate Students, 2015 Georgia State University
Information Literacy & Open Access For Physics And Astronomy Graduate Students, Jackie K. Werner
University Library Faculty Presentations
This presentation covers research on the physics and astronomy graduate students’ use and understanding of open access resources. The research, which was conducted in summer 2015, surveyed the physics and astronomy graduate students of Georgia Institute of Technology to discover how graduate students discover open access and other academic resources, as well as their level of awareness about open access in general and specific OA databases in particular. The research also included an interview with the graduate studies advisor in the Physics & Astronomy department Georgia Tech. The presentation also describes open access resources in Physics and Astronomy and relates the ...
Research And Development Of A Smart Module Integrated Converter For The Future Of Renewable Energy, 2015 University of Montana - Missoula
Research And Development Of A Smart Module Integrated Converter For The Future Of Renewable Energy, Phong Tran
University Grant Program Reports
This research focused on developing of a Smart Module Integrated Converter for grid-connected solar photovoltaic (PV) system. This technology enhances the commercial micro-inverters with novel network-supported, grid-adapted functionalities. The micro-inverter utilizes open source and reference design from Microchip to keep design and production at low cost.
Adsorption And Diffusion Of Ru Adatoms On Ru(0001)-Supported Graphene: Large-Scale First-Principles Calculations, 2015 Iowa State University
Adsorption And Diffusion Of Ru Adatoms On Ru(0001)-Supported Graphene: Large-Scale First-Principles Calculations, Yong Han, James W. Evans
Physics and Astronomy Publications
Large-scale first-principles density functional theory calculations are performed to investigate the adsorption and diffusion of Ru adatoms on monolayer graphene (G) supported on Ru(0001). The G sheet exhibits a periodic moiré-cell superstructure due to lattice mismatch. Within a moirécell, there are three distinct regions: fcc, hcp, and mound, in which the C6-ring center is above a fcc site, a hcp site, and a surface Ru atom of Ru(0001), respectively. The adsorption energy of a Ru adatom is evaluated at specific sites in these distinct regions. We find the strongest binding at an adsorption site above a C atom ...
Probabilistic Reasoning In Cosmology, 2015 The University of Western Ontario
Probabilistic Reasoning In Cosmology, Yann Benétreau-Dupin
Electronic Thesis and Dissertation Repository
Cosmology raises novel philosophical questions regarding the use of probabilities in inference. This work aims at identifying and assessing lines of arguments and problematic principles in probabilistic reasoning in cosmology.
The first, second, and third papers deal with the intersection of two distinct problems: accounting for selection effects, and representing ignorance or indifference in probabilistic inferences. These two problems meet in the cosmology literature when anthropic considerations are used to predict cosmological parameters by conditionalizing the distribution of, e.g., the cosmological constant on the number of observers it allows for. However, uniform probability distributions usually appealed to in such ...
Ionospheric Response To Infrasonic-Acoustic Waves Generated By Natural Hazard Events, 2015 Embry-Riddle Aeronautical University - Daytona Beach