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 30 for “"scientific instruments"”.
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Dossier: Distributed operating system and infrastructure for scientific data management
As scientific advancement and discovery have become increasingly data-driven and interdisciplinary, there are urging needs for advanced cyberinfrastructure to support managing and process- ing scientific data generated from day-to-day research. However, the development of data-driven …
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The Nanogate : nanoscale flow control
… among biologists, chemists and engineers. A few scientific instruments, notably the atomic force microscope and the surface forces apparatus, have been used extensively to investigate very short range molecular phenomena. In this thesis, the design, fabrication and characterization of a novel gas …
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The scattering of fast neutrons by lead. Construction of an ion source and accelerating tube
… T. Finkelstein and described in the "Review of Scientific Instruments". One of the purposes of the work discussed in this paper was the adaption of an ion source of the Finkelstein type to the Rice Institute Cockcroft-Walton high voltage particle accelerator. In previous experiments with the …
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Beyond music sharing: an evaluation of peer-to-peer data dissemination techniques in large scientific collaborations
The avalanche of data from scientific instruments and the ensuing interest from geographically distributed users to analyze and interpret it accentuates the need for efficient data dissemination. An optimal data distribution scheme will find the delicate balance between conflicting requirements of …
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Bayesian modelling of nuclear fusion experiments
… probability theory as a general framework for scientific modelling and inference is introduced and applied to nuclear fusion experiments in order to provide consistent inference solutions given multiple heterogeneous data sets. Fusion plasmas are complex physical systems, in which charged …
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Camera for the invisible : toward a toolkit for urban exploration
… a new categorization schema for perceptual scientific instruments, which will lead to a proposed new genre of tangible design called "skin2nature interfaces." I will write about the design process in a way that invokes intuition by engaging the reader in a semi-experiential process within …
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Optomechanical and wavelength alignments of CubeSat laser communication Systems
… the introduction of CubeSats has enabled the scientific, commercial, and governmental communities to launch space missions more quickly at lower costs, the communication subsystems of the platform are limited by a heavily regulated and overcrowded RF spectrum. Scientific instruments with …
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The interior of the Cape House, 1670-1714
… spinning, music, indoor games, clocks, watches, scientific instruments, weapons and domestic pets. The Conclusion attempts to place the domestic world at the Cape in the context of contemporary Dutch culture. Comparisons are drawn between the Cape and other Dutch societies, and particularly …
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The conceptual design of architectural form : a performance spec for a computer system
… a creatrix. The creatrix is analogous to three instruments. It expresses the architect's ideas like a musical instrument. It manages and manipulates building complexity like mathematical instruments. It quantifies and qualifies for the architect's evaluation like scientific instruments. Its …
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Beaver Dams, Spider Webs, and the Sticky Wicket: An Investigation On What Counts as Technology and What Counts as Knowledge
… animals. Davis Baird has argued that our scientific instruments bear knowledge in important ways, and the idea of technological knowledge bears interestingly on discussions of natural artifacts. Baird thinks his argument for instruments bearing knowledge can be extended, but how far can it …
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Ancillary Scientific Instrument Attachment (ASIA): A Distributed Hitchhiker Payload Carrier
… spacecraft, an opportunity exists to improve scientific return at low cost to the satellite operator and minimal effect on its primary mission, regardless of the nature of that mission. The practicality of permanently attaching a small, mass-produced, non-deployable hitchhiker payload to …
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Neusch Automated Filter System: A Custom-Designed Photo-Filter Switching Apparatus for Embry-Riddle’s 1 Meter Telescope
… This one-of-a-kind mount allows for multiple scientific instruments to be simultaneously mounted to the telescope. However, its mechanical layout prevents the use of a traditional device known as a filter wheel.</p> <p>Filter wheels store multiple photo-filters each capable of filtering out …
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Distributed data management for large scale applications
… the emergence of new highresolution scientific instruments, the widespread use of the Internet and the World Wide Web and even globalisation have contributed to the emergence of new large scale dataintensive applications. <br/><br/>These applications require new systems that allow …
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Vanished comforts: locating roles of domestic furnishings in Scotland 1500-1650
… medicines and sweetmeats, and had a number of scientific instruments. Pursuits reconstructed from the detail of later inventories can illuminate other domestic situations where clues are more subtle or absent. The level of autonomy Lady Home and her daughters exercised over their homes is a …
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An integrated heterodyne interferometer with on-chip detectors and modulators
… the most important class of optical sensors and scientific instruments ever developed. Today, interferometric techniques are key to applications such as displacement measurement, photolithography, vibrometry, optical coherence tomography (OCT), and LIDAR. In these applications, the preferred mode …
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Understanding Mercury's Thermochemical Evolution Using a Geochemical and Geophysical Lens
… within Mercury as it evolved over time. Scientific instruments aboard MESSENGER indicate that Mercury has a very thin surface layer of broken rocks, a thin crustal layer covered by lavas erupted from a melt formed in a relatively thin, FeO poor mantle, and a large metal rich core made …
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Perceive, predict, and plan: robotic expeditionary science in oceanic spatiotemporal fields
… future sampling performance. As most in situ scientific instruments yield point-measurements, considerable uncertainty is placed over the form of the dynamics in purely data-driven solutions. Challenges related to planning under uncertainty for geochemical surveys in the deep ocean are …
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Software defined networking for radio telescopes: a case study on the applicability of SDN for MeerKAT
Scientific instruments like radio telescopes depend on high-performance networks for internal data exchange. The high bandwidth data exchange between the components of a radio telescope makes use of multicast networking. Complex multicast networks are hard to maintain and grow, and specific …
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Experiencing mathematical proves syntax of an astrolabe
… goal of thesis is discussing the way historical scientific instruments are exhibited in Art or Science Museums. The astrolabe and the related mathematical theories, as developed in the Arabic and Persian tradition between X-XI Century, are taken as emblematic case for this analysis. The proposed …
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Safety-driven system engineering process
… of the control system and functionality of the scientific instruments, while also including a high-level design of the entire spacecraft. The application of the process described in this thesis demonstrates that design decisions are safety-driven, and that the results of the hazard analysis are …
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