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Relevant bibliographies by topics / Astrophysics and Space Science / Dissertations / Theses

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Dissertations / Theses on the topic 'Astrophysics and Space Science'

Author: Grafiati

Published: 4 June 2021

Last updated: 8 February 2022

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1

Bonokwane, Kelebogile. "SALT and TESS monitoring of central stars of planetary nebulae." Master's thesis, Faculty of Science, 2021. http://hdl.handle.net/11427/33436.

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Planetary Nebulae (PNe) are the product of Asymptotic Giant Branch (AGB) evolution. Evolved from Solar-like intermediate mass stars (0.8 – 8M), they have a hot, radiating core that ionizes the gas of the expelled envelope, producing a glowing nebula. The core eventually evolves into a white dwarf (WD), following the WD cooling track. Complex, aspherical morphologies are observed in PNe and binary central stars (CSs) have been the favoured explanation for deviations from spherical symmetry. Finding and characterizing the population of binary CSs is thus important to understand the physics behin

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2

Oreta, Timothy. "Vector-Galileon-Tensor theories of gravity." Master's thesis, University of Cape Town, 2016. http://hdl.handle.net/11427/20925.

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A detailed study of the cosmological evolution in a particular vector-tensor theory of gravity with a potential and a Galileon-motivated interaction terms is presented. The evolution of vector field self interactions that are relatively related to Galileon fields throughout the expansion history of the universe is considered and a classification of the parameters M (mass term) and H (Hubble parameter) according to the behaviour of the field in each cosmological epoch is carried out. In particular, we obtain conditions for the parameters so that the field grows exponentially or oscillates with

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3

Misra, Anuj. "Towards a holographic description of pulsar glitch mechanism." Master's thesis, University of Cape Town, 2015. http://hdl.handle.net/11427/15589.

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This work aims to review the progress in understanding the underlining physics of pulsar glitches: beginning from the pedagogical development of the subject to eventually motivating the use of AdS/CFT techniques in studying a certain class of condensed matter systems. The foundation of this work is built upon the Gross Pitaevskii (GP) model of super-fluidity applied to the interior matter of neutron stars, where the condensate wave function acts as the order parameter of the macroscopic coherence theory. The excitation modes of the field equations are found to be solitonic vortices, which then

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4

Kubwimana, Jean Claude. "Cosmic acceleration and the coincidence problem." Master's thesis, University of Cape Town, 2009. http://hdl.handle.net/11427/6102.

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Includes abstract.<br>Includes bibliographical references (leaves 83-89).<br>In the standard model of the Universe, the cosmos has only accelerated once since decoupling and only recently, at around a redshift of z ̃ 0.5 as supported by different observations including Type Ia Supernovae (SNIa), the Cosmic Microwave Background (CMB), Large Scale Structure (LSS), and Weak Lensing (WL). This confirmation however, lacks a fundamental physics explanation. The hypothetical form of energy termed 'dark energy' (DE) assumed to account for that acceleration behavior, is still mysterious and why its dom

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Obonyo, Willice Odhiambo. "Open clusters and HII regions of our Galaxy." Master's thesis, University of Cape Town, 2015. http://hdl.handle.net/11427/19997.

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Open clusters are essential laboratories for understanding stellar evolution, as they allow constraints to be placed on stellar ages and luminosities. As distance indicators they are also important tracers of star formation in the Milky Way. One such cluster is Trumpler 27 that we identified for detailed study.The aim of the study is to estimate the distance, radial velocity, age, membership and reddening of the cluster using both spectroscopic and photometric techniques. We used new spectroscopic data collected from SAAO's 1.9m telescope together with existing photometric data from catalogues

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Tapsoba, Wendyam Blaise. "Analysis of SALT Fabry-Pérot medium resolution data." Master's thesis, University of Cape Town, 2015. http://hdl.handle.net/11427/16494.

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The Southern African Large Telescope Fabry-Pérot interferometer has been used in its medium resolution mode to observe three of 30 galaxies of the MHONGOOSE galaxy sample for which very deep HI observation (typically 200 hours/galaxy) will be obtained with MeerKAT. So optical high spatial resolution of 2 arcsec data of NGC 7361, NGC 7424 and NGC 7793 have been obtained. The major object of this thesis was to test SALT Fabry-Pérot medium resolution data in order to pursue the survey of all the MHONGOOSE sample, and to be able to compare the accuracy of the kinematic results. Through this work,

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Tshenye, Thapelo Obed. "Quality control of astronomical CCD observations." Master's thesis, University of Cape Town, 2007. http://hdl.handle.net/11427/4409.

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Okouma, Patrice M. "Type Ia supernovae as tools for cosmology." Master's thesis, University of Cape Town, 2008. http://hdl.handle.net/11427/4424.

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9

Sikhonde, Muzikayise E. "A study of chameleon-photon mixing from pulsars." Master's thesis, University of Cape Town, 2012. http://hdl.handle.net/11427/12638.

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Includes bibliographical references.<br>A number of solutions to the dark energy problem have been proposed in literature, the simplest is the cosmological constant A. The cosmological constant lacks theoretical explanation for its extremely small value, thus dark energy is more generally modelled as a quintessence scalar field rolling down a flat potential.

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Affadi, Ikechukwu Patrick. "A new method of mapping cosmic flow fields : evaluating the sustainability of the infrared bands Tully-Fisher relation for ZoA work." Master's thesis, University of Cape Town, 2016. http://hdl.handle.net/11427/20813.

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This thesis aims at using the Infrared Survey Facility (IRSF) JHKₛ bands, Two Micron All Sky Survey (2MASS) JHKₛ bands and Wide Field Infrared Survey Explorer (WISE) W1-W4 bands isophotal magnitudes to understand the cosmic flow associated with Zone of Avoidance (ZoA) galaxies.

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Hlabathe, Michael. "Post-common-envelope binary central stars of Planetary Nebulae in the OGLE-IV survey." Master's thesis, University of Cape Town, 2016. http://hdl.handle.net/11427/20870.

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Planetary Nebulae (PNe) are defined as the ionized shells of circumstellar gas ejected through an intense stellar wind at the end of the star's life. PNe come in different shapes, from spherical to highly complex, non-spherical shapes. Mass loss in AGB stars is presumed as the shaping mechanism but how it results in different PNe morphologies is still unclear. Binary central stars that have undergone common envelope evolution are thought to be a possible solution to this longstanding problem. Using photometry from the OGLEIV survey, we present the newly identified close binary central stars of

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Sorgho, Amidou. "Observing galaxies in the Southern Filament of the Virgo Cluster with KAT-7 and WSRT." Master's thesis, University of Cape Town, 2015. http://hdl.handle.net/11427/16495.

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To date, our understanding of the formation and evolution of galaxies attributes a very important role to the neutral hydrogen (HI) gas since it constitutes the reservoir of fuel out of which galaxies form stars. In their evolution, galaxies interact with each other and with their environment, and very often these interactions leave fingerprints in the HI distribution. The extended HI envelopes of galaxies are sensitive tracers of those tidal interactions. In the present study, we map the HI distribution of galaxies in a ~1.5° X 2.5° region of the Virgo cluster using the Karoo Array Telescope

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13

Hodges, Andrew. "The everyday geopolitics of science in post-Yugoslav space : from war and 'transition' to economic crisis." Thesis, University of Manchester, 2013. https://www.research.manchester.ac.uk/portal/en/theses/the-everyday-geopolitics-of-science-in-postyugoslav-space-from-war-and-transition-to-economic-crisis(498797c2-d703-44da-b979-0eaf33107cf0).html.

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My research concerns how the changing geopolitical positioning of the post-Yugoslav states has impacted on the lives and prospects of students and researchers in the natural sciences. The main focus is on scientists’ experiences and self-reporting, both of the situation at present and during the nineties, when scientific operations and scientists’ lives were disrupted by war and in the case of Belgrade, Serbia, UN sanctions against science. My fieldwork is centred on participant ethnography based at an institute in Belgrade, Serbia (the Belgrade Astronomical Observatory). However, throughout t

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Ignace, Richard. "Astro4U: An Introduction to the Science of the Cosmos." Digital Commons @ East Tennessee State University, 2014. http://amzn.com/1634870697.

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Astro maths -- The sky -- Astronomy of the ancients -- Renaissance astronomy -- The astronomer's toolbox: physical principles -- Overview of the solar system -- The sun, our nearest star -- Earth, the home world -- The moon -- The terrestrial planets -- The gas giant planets -- The dwarf planets -- Major moons of the solar system -- Solar system debris -- Properties of the stars -- The formation of stars -- The lives of stars -- Stellar corpses -- The interstellar medium -- Living in a galaxy called the milky way -- Galaxies -- Active galaxies and quasars -- Cosmology -- Exoplanets -- The sear

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Moore, Christopher Samuel. "Atomic Layer Deposition Re ective Coatings for future Astronomical Space Telescopes and the Solar Corona viewed through the MinXSS (Miniature X-ray Solar Spectrometer) CubeSats." Thesis, University of Colorado at Boulder, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10680697.

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<p>Advances in technology and instrumentation open new windows for observing astrophysical objects. The first half of my dissertation involves the development of atomic layer deposition (ALD) coatings to create high reflectivity UV mirrors for future satellite astronomical telescopes. Aluminum (Al) has intrinsic reflectance greater than 80% from 90 ? 2,000 nm, but develops a native aluminum oxide (Al2O3) layer upon exposure to air that readily absorbs light below 250 nm. Thus, Al based UV mirrors must be protected by a transmissive overcoat. Traditionally, metal-fluoride overcoats such as MgF2

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Wegryn, Eric. "The dusty atmosphere of Mars: A study of the properties of martian aerosol dust, using Imager for Mars Pathfinder and Hubble Space Telescope observations." Diss., The University of Arizona, 2000. http://hdl.handle.net/10150/289700.

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The properties of aerosol dust on Mars may be deduced from photometric observations of its atmosphere. By comparing sky images taken by the Imager for Mars Pathfinder to numerical models, the size distribution and reflective properties of the dust particles can be determined. The format, quality, and reduction of the IMP images is described herein, as is the computational radiative transfer model used, with its various parameters. After discovering and compensating for an imprecision in the pointing of the camera, models were successfully fit to the IMP solar aureole datasets. Key results incl

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Tatum, Brian Shane. "Rearranging an Infinite Universe: Literary Misprision and Manipulations of Space and Time, 1750-1850." Thesis, University of North Texas, 2018. https://digital.library.unt.edu/ark:/67531/metadc1404533/.

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This project explores the intersection of literature and science from the mid-eighteenth century to the mid-nineteenth century in the context of this shift in conceptions of space and time. Confronted with the rapid and immense expansion of space and time, eighteenth and nineteenth-century philosophers and authors sought to locate humans' relative position in the vast void. Furthermore, their attempts to spatially and temporally map the universe led to changes in perceptions of the relationship between the exterior world and the interior self. In this dissertation I focus on a few important te

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18

Pourbaix, Dimitri. "Space astrometry of unresolved binaries: from Hipparcos to Gaia." Doctoral thesis, Universite Libre de Bruxelles, 2007. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210649.

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Building upon its success with the Hipparcos space astrometry mission launched in 1989, the European Space Agency has agreed to fund the construction of its successor, Gaia, and its launch in 2011. Despite the similarities between the two missions, Gaia will be orders of magnitude more powerful, more sensitive, but also more complex in terms of data processing. Growing from 120,000 stars with Hipparcos to about 120,000E4 stars with Gaia does not simply mean pushing the computing resources to their limits (1 second of processing per star yields 38 years for the whole Gaia-sky). It also means fa

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Petiteau, Antoine. "DE LA SIMULATION DE LISA A L'ANALYSE DES DONNEES. Détection d'ondes gravitationnelles par interférométrie spatiale (LISA : Laser Interferometer Space Antenna)." Phd thesis, Université Paris-Diderot - Paris VII, 2008. http://tel.archives-ouvertes.fr/tel-00383222.

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Les ondes gravitationnelles sont émises par une large gamme de sources astrophysiques et cosmologiques. L'étude des ondes à basse fréquence telles que celles émises par les binaires de trous noirs, les EMRIs ou encore les fonds galactique et stochastique, nécessite l'utilisation d'un détecteur spatial. C'est la mission LISA (Laser Interferometer Space Antenna) composée de trois satellites distants de 5 millions de kilomètres et qui s'échangent des faisceaux lasers afin de former plusieurs interféromètres. La bonne compréhension de ce projet complexe nécessite le développement d'un simulateur t

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Parent, Damien. "Observations de pulsars avec le Fermi Gamma-ray Space Telescope." Phd thesis, Université Sciences et Technologies - Bordeaux I, 2009. http://tel.archives-ouvertes.fr/tel-00461405.

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Le Large Area Telescope à bord du satellite Fermi, lancé le 11 juin 2008, est un télescope spatial observant l'univers des hautes énergies. L'instrument couvre l'intervalle en énergie de 20MeV à 300 GeV avec une sensibilité nettement améliorée et la capacité de localiser des sources ponctuelles. Il détecte les photons gamma par leur conversion en paire électron-positron, et mesure leur direction et leur énergie grâce à un trajectographe et un calorimètre. Cette thèse présente les courbes de lumières et les mesures spectrales résolues en phase des pulsars radio et gamma détectés par le LAT. La

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21

Eyring, Nicholas J. "Development and Validation of an Automated Directivity Acquisition System Used in the Acquisition, Processing, and Presentation of the Acoustic Far-Field Directivity of Musical Instruments in an Anechoic Space." BYU ScholarsArchive, 2013. https://scholarsarchive.byu.edu/etd/4004.

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A high spatial resolution acoustic directivity acquisition system (ADAS) has been developed to acquire anechoic measurements of the far field radiation of musical instruments that are either remote controlled or played by musicians. Building upon work performed by the BYU Acoustic Research Group in the characterization of loudspeaker directivity, one can rotate a musical instrument with sequential azimuthal angle increments under a fixed semicircular array of microphones while recording repeated notes or sequences of notes. This results in highly detailed and instructive directivity data prese

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22

Civet, François. "Caractérisation de la structure électrique interne de Mars par méthode d'induction électromagnétique à partir des données magnétiques satellitaires de Mars Global Surveyor." Phd thesis, Université de Bretagne occidentale - Brest, 2012. http://tel.archives-ouvertes.fr/tel-00740386.

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Les méthodes d'induction électromagnétique permettent de caractériser la conductivité électrique des matériaux, dont les corps planétaires telluriques, depuis les couches superficielles de la croûte jusqu'aux zones les plus internes, dans le manteau inférieur. Pour une source de champ électromagnétique donnée, des courants sont induits dans les matériaux qui y sont soumis. Avec l'essor des données magnétiques satellitaires, de nouvelles méthodes d'analyse des données magnétiques permettent d'obtenir des image unidimensionnelles de la structure électrique de ces corps car la structure spatio-te

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23

Billot, Nicolas. "Etalonnage d'un nouveau type de détecteur bolométrique pour l'instrument PACS de l'Observatoire Spatial Herschel." Phd thesis, Université Paris Sud - Paris XI, 2007. http://tel.archives-ouvertes.fr/tel-00292030.

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La mission Herschel est un des projets phare du programme scientifique de l'agence spatiale européenne (ESA). Son objectif est d'explorer le ciel dans l'une des régions du spectre électromagnétique les moins connues à ce jour : l'infrarouge lointain. Sa résolution, sa sensibilité mais aussi son domaine spectral font de Herschel un observatoire unique et parfaitement adapté à l'étude des mécanismes de formation d'étoiles et d'évolution des galaxies. Parmi les autres thµemes scientifiques qui bénéficieront des observations Herschel se trouvent les noyaux actifs de galaxie, les disques circumstel

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Teyssier, David. "Etalonnage de Herschel/HIFI : approche système et expérimentale d'un instrument scientifique spatial. Etude observationnelle de coeurs denses galactiques." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2002. http://tel.archives-ouvertes.fr/tel-00001957.

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L'étalonnage des instruments dédiés à l'observation de la Terre et du Cosmos est l'une des clefs d'un retour scientifique maximal de ces missions. <br> La première partie de cette thèse est consacrée à la préparation des outils et méthodes d'étalonnage du spectromètre submillimétrique HIFI embarqué à bord du satellite Herschel en 2007. Le premier aspect traite de l'étalonnage des données et de leur conversion en une échelle scientifique. Nous recensons dans un premier temps les besoins de l'étalonnage en vol et identifions les étalons primaires et secondaires. Nous établissons alors une liste

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Sidhu, Jagjit Singh. "Probing Macroscopic Dark Matter Parameter Space." Case Western Reserve University School of Graduate Studies / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=case1598956916361224.

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Zhu, Wei. "Microlens Mass Determinations from Space-based Parallax." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1498472350212665.

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27

Pope, Benjamin James Spinks. "Observing bright stars and their planets from the Earth and from space." Thesis, University of Oxford, 2017. https://ora.ox.ac.uk/objects/uuid:d692bf96-ccf8-47bf-b246-1bbedcce60e5.

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The discovery and characterization of extrasolar planets is a leading frontier of science, which is limited by our ability to extract real astrophysical signals masked by systematic noise. In this Thesis I develop techniques for self-calibration in optical astronomy, in both imaging and photometry, applicable both to observations from the ground and for space telescopes, and apply these to searching for exoplanets. Kernel phase interferometry is a method for improving high angular resolution astronomical imaging by cancelling out the effects of the turbulent atmosphere. I derive a generalizati

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Tanner, William Graydon. "Meteoroids and space debris hypervelocity impact penetrations : the role of hydrocodes." Thesis, University of Kent, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.319235.

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Trucks, Jesica Lynn. "A Variability Study of Y Dwarfs: A Spitzer Space Telescope Program." University of Toledo / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1564689621551064.

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Yano, Hajime. "The physics and chemistry of hypervelocity impact signatures on spacecraft : meteoroids and space debris." Thesis, University of Kent, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.262370.

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31

Ekenbäck, Andreas. "Numerical modelling of ENAs from stellar wind interactions." Doctoral thesis, Institutet för rymdfysik (IRF), 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-1804.

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<p>Energetic neutral atoms (ENAs) are produced whenever a stellar wind encounters a neutral atmosphere. If a stellar wind proton comes sufficiently close to a neutral a charge-exchange reaction may take place, transforming the proton into an ENA. Unaffected by magnetic and electric fields, ENAs provide an opportunity for global imaging of stellar wind interactions.</p><p>This thesis presents methods and results of numerical modelling of stellar wind interactions. In particular it treats in depth production of ENAs at comets, Mars and the extrasolar planet HD 209458b.</p><p>Sufficiently accurat

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Brito, Miguel Centeno da Costa Ferreira. "Development of a miniature pulse tube cooler for space applications." Thesis, University of Oxford, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.312193.

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Shrine, Nicholas Robert George. "Laboratory investigation of oblique hypervelocity impacts with relevance to in situ meteoroid and space debris detectors." Thesis, University of Kent, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.301828.

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King, Barbara Amelia. "Space Art + Space Science a polymathic paradigm shift in the art/science dialogue." Master's thesis, Faculty of Engineering and the Built Environment, 2021. http://hdl.handle.net/11427/32739.

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Perhaps no other field of scientific endeavor has been more influenced by the arts than space exploration. The artistic visions of yesteryear are the technological realities of today. These realities in turn create new possibilities for artistic expression. However, Space Art and Space Science have shared a convoluted history. Their forerunner disciplines of the Humanities and Natural Sciences and their practitioners were entrenched as polar opposites for centuries. Recent research, however, has revealed the reverse; that the psychological profile and the creative processes of artists and scie

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Tappe, Jack A. "Development of star tracker system for accurate estimation of spacecraft attitude." Thesis, Monterey, California : Naval Postgraduate School, 2009. http://edocs.nps.edu/npspubs/scholarly/theses/2009/Dec/09Dec%5FTappe.pdf.

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Thesis (M.S. in Astronautical Engineering)--Naval Postgraduate School, December 2009.<br>Thesis Advisor(s): Kim, Jae Jim ; Agrawal, Brij N. "December 2009." Description based on title screen as viewed on January 26, 2010. Author(s) subject terms: Star tracker, Planar triangles, Angle method, Spherical triangle, Quaternion estimator, Least-squares (QUEST), TRIAD Includes bibliographical references (p. 87-88). Also available in print.

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Baiocchi, Dave. "Design and control of lightweight, active space mirrors." Diss., The University of Arizona, 2004. http://hdl.handle.net/10150/290102.

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The success of the Hubble Space Telescope created a great interest in the next generation of space telescopes. To address this need, the University of Arizona (UA) has designed and built several lightweight prototype mirrors ranging in size from 0.5 m to 2 m in diameter. These mirrors consist of three key components: a thin, lightweight glass substrate holds the reflective surface; the surface accuracy is maintained by an array of position actuators; and the stiffness is maintained by a lightweight carbon-fiber/epoxy support structure. The UA mirrors are different from conventional mirrors in

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Ridley, J. K. "Examination of the application of space-borne time-of-flight mass spectrometry to the analysis of cosmic dust particles." Thesis, University of Kent, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.377578.

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Ballard, Sarah. "In Pursuit of New Worlds: Searches for and Studies of Transiting Exoplanets from Three Space-Based Observatories." Thesis, Harvard University, 2012. http://dissertations.umi.com/gsas.harvard:10229.

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This thesis presents studies of transiting exoplanets using observations gathered in large part from space, with the NASA EPOXI Mission, the Spitzer Space Telescope, and the Kepler Mission. The first part of this thesis describes searches for additional transiting planets in known exoplanet systems, using time series photometry gathered as part of the NASA EPOXI Mission. Using the EPOXI light curves spanning weeks for each star, we searched six exoplanetary systems for signatures of additional transiting planets. These six systems include five hosts to hot Jupiters: HAT-P-4, TrES-3, TrES-2, WA

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Pak, Anne On-Yi 1977. "Euclidean space codes as space-time block codes." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/86722.

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Barry, Andrew Michael. "The science of science : programmes of British space research." Thesis, University of Sussex, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.333979.

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Watkinson, Emily Jane. "Space nuclear power systems : enabling innovative space science and exploration missions." Thesis, University of Leicester, 2017. http://hdl.handle.net/2381/40461.

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The European Space Agency’s (ESA’s) 241Am radioisotope power systems (RPSs) research and development programme is ongoing. The chemical form of the americium oxide ‘fuel’ has yet to be decided. The fuel powder will need to be sintered. The size and shape of the oxide powder particles are expected to influence sintering. The current chemical flow-sheet creates lath-shaped AmO2. Investigations with surrogates help to minimise the work with radioactive americium. This study has proposed that certain cubic Ce1-xNdxO2-(x/2) oxides (Ia-3 crystal structures with 0.5 < x < 0.7) could be potential surr

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McCalden, Alec John. "User interfaces in space science instrumentation." Thesis, University College London (University of London), 2006. http://discovery.ucl.ac.uk/14194/.

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This thesis examines user interaction with instrumentation in the specific context of space science. It gathers together existing practice in machine interfaces with a look at potential future usage and recommends a new approach to space science projects with the intention of maximising their science return. It first takes a historical perspective on user interfaces and ways of defining and measuring the science return of a space instrument. Choices of research methodology are considered. Implementation details such as the concepts of usability, mental models, affordance and presentation of in

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Godwin, Matthew Thomas. "The Skylark rocket, British space science and the European Space Research Organisation." Thesis, University of London, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.424926.

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Garrett, Susan R. "A mathematical model for the detection of deep space objects." Thesis, Virginia Polytechnic Institute and State University, 1987. http://hdl.handle.net/10919/90970.

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The problem of detecting deep space objects with certain probabilities was investigated. A mathematical model was then developed from given problem specifications that deals with the trade-off of various parameters involved in the detection problem. A software package that allows the user to input data interactively was written to implement the model. The completed program as well as an analysis of the tested results are included.<br>M.S.

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Bailer-Jones, Daniela M. "Scientific models : a cognitive approach with an application in astrophysics." Thesis, University of Cambridge, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.284998.

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Maharaj, Doraisamy Ashok. "Space for "development": US-Indian space relations 1955 -1976." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/45973.

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Through four case studies of technological systems - optical tracking of satellites, sounding rockets, instructional television through a geosynchronous satellite, and a launch vehicle--I explore the origins and development of the Indian space program from 1955 through 1976, a period critical in shaping the program's identity and its relationship to the state. Institutionalized, and constructed in different geographic regions of India, these systems were embedded in the broader political, economic, and social life of the country and served as nodes around which existing and new scientific and

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Bouland, Adam Michael. "The space around BQP." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/113997.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2017.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 253-268).<br>This thesis explores the computational power of quantum devices from the perspective of computational complexity theory. Quantum computers hold the promise of solving many problems exponentially faster than classical computers. The computational power of universal quantum devices is captured by the complexity class BQP, which stands for "bounded-error quantum polynomial time."

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48

Gstalder, Steven Herbert. "Understanding Library Space Planning." Thesis, University of Pennsylvania, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10289537.

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<p> The role of the academic library has shifted from developing book collections to serving the information and technology needs of students and faculty. The needs of library users change more quickly and unpredictably than the needs of books, and library directors have pushed beyond the traditional incremental approach to library development to respond to changing needs. As many universities struggle to balance budgets, library directors must demonstrate the value and demand for library spaces and services to justify investments in construction and renovation projects. This study investigate

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Kumaran, Vikram. "Plan Recognition as Candidate Space Search." NCSU, 2006. http://www.lib.ncsu.edu/theses/available/etd-10312006-000347/.

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Effective human computer interaction is enhanced by a machine?s ability to make educated guesses about the intention of its user. In our research, we have developed a novel plan recognition algorithm ? based on plan space search planners ? to recognize plans given a limited set of observed actions. Our focus in this research is towards accurately picking possible plans and not towards disambiguation or building plan libraries and therefore we complement other advances in this field, namely probability based recognition and other plan library based recognition systems. Along with the ability to

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Godwin, Matthew. "The Skylark rocket : British space science and the European space research organisation, 1957-1972 /." Paris : Beauchesne, 2007. http://catalogue.bnf.fr/ark:/12148/cb411905977.

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