Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 615 for “"LEO"”.
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When Leo Turned Left
Biography.
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LEO: an LLM-Powered EDA Overview
… To address these barriers, we introduce LEO, a computational notebook tool that operationalizes notebook summarization by leveraging large language models to (1) cluster analysis patterns and (2) trace variable use. LEO organizes code into a two-level hierarchy–General Level Sections and …
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Leo Strauss's Critique of Martin Heidegger
While remaining rooted in a comparison of some of the primary texts of the thinkers under scrutiny, my thesis also discusses several issues which arise in the mutual consideration of Heidegger and Strauss, specifically the questions of the ontological and political status of nature, the problem of …
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High-performance electronic systems for complex LEO missions
… through constellations of low Earth orbiting (LEO) satellites. Existing Earth observation applications focused on observation imagery, such as weather prediction and disaster relief planning, will have improvements in the quality of their products from increased the resolution of the …
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Política e religião no pensamento filosófico de Leo Strauss
… na visão do filósofo político teuto americano Leo Strauss, a religião exerce um papel político preponderante na manutenção do establishment social e da ordem civil. Trata-se, assim, de ver como, para esse filósofo, a religião, por ser detentora de um horizonte moral legitimado pela ideia de …
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Evolutionary Debris Modeling of LEO and Cis-Lunar Space
… satellite constellations in Low Earth Orbit (LEO) and planned return missions to the Moon, the risk created by fragmentation events in both LEO and cis-lunar space motivates an analysis of space debris evolution in these regions. Source-sink models allow for the study of debris evolution by …
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GNSS-based relative navigation for LEO nanosatellite laser communications
… of demonstrating the first Low-Earth orbit (LEO) nanosatellite crosslink. The need for precise and accurate pointing with laser instruments motivates a formalized, systematic approach to fulfilling this need called Pointing, Acquisition, and Tracking (PAT). The focus of this work is the …
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Orbital Determination Feasibility of LEO Nanosatellites Using Small Aperture Telescopes
… FOV in order to accurately image passing LEO satellites. Through the use of the Double-r and Gauss Initial Orbit Determination methods as well as Least Squared Differential Correction and Extended Kalman Filter Orbit Determination methods, an accurate predicted orbit can be determined.</p> …
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Active control of particulate contamination for a Leo spacecraft environment
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1993.
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Atomic Oxygen Considerations for LEO De-orbit Trajectories Using Solar Sails
… solar sail technology, they could be deployed on LEO satellites higher than 600 km to help de-orbit the satellite within 25 years upon mission termination. To determine how atomic oxygen would affect the solar sail, material from Lightsail-2 was tested in a thermal-energy, isotropic, atomic oxygen …
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Improvements to LEO Tracking on The Portable Telescope for Lasercom (PorTeL)
… (CLICK) mission satellites in low-Earth orbit (LEO). We show that PorTeL is able to track CLICK-A with an accuracy of 11.1 arcseconds, well within its requirement of 21.8 arcseconds.
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Reduced-Order Atmospheric Density Modeling for LEO Satellite Orbital Reentry Prediction
… today's increasingly cluttered Low Earth Orbit (LEO) environment. Current density models can be computationally expensive, and often contain large errors, which make density modeling a leading cause of uncertainty in drag estimation. Reduced-order atmospheric density Models (ROMs) have shown …
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Pursuing efficiency in business: the technological and commercial development of LEO Computers
LEO Computers were a series of machines designed, developed, and manufactured for business applications between 1947–1969 by the British catering firm J. Lyons & Co. and its subsidiary LEO Computers Limited. This dissertation takes LEO Computers as a case study for understanding the emergence of …
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The Feasibility and Application of Observing Small LEO Satellites with Amateur Telescopes
… Skynyx 2.0 camera were utilized to observe small LEO satellites, using a well-documented point-and-wait staring method. Over a period of three months, a total of 186 observation attempts were made resulting in 97 successful captures. From the gathered data, three possible aerospace applications …
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Environmental design guidelines for a second generation, LEO, permanently manned space station
This thesis is a continuation of the thoughts and efforts of the author's participation and co-organization of the Space Station Design Workshop (SSDW). The SSDW was a student run event whose inception surfaced in the Spring of 1986, materialized over the summer of that year, and subsequently …
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Analysis of LEO Radiation Environment and its Effects on Spacecraft's Critical Electronic Devices
… travel in general. The thesis focuses on the LEO radiation environment and how the particles in it interact with materials. Using existing empirical models, the exposed dosage due to the LEO space environment radiation sources, as a function of orbital altitude, orbital inclination and …
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