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 43 for “"instrument design"”.
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Instrument Design Optimization with Computational Methods
… of differential equations, two different instruments in experimental Hall C at the Thomas Jefferson National Accelerator Facility are analyzed. The time dependence of density fluctuations from the liquid hydrogen (LH2) target used in the <em>Q<sub>weak</sub></em> experiment (2011-2012) are …
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The chandelier : an exploration in robotic musical instrument design
… presents several works involving robotic musical instruments. Robots have long been used in industry for performing repetitive tasks, or jobs requiring superhuman strength. However, more recently robots have found a niche as musical instruments. The works presented here attempt to address the …
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Rocket-borne Instrument Design to Observe Peak OH Meinel Band Vibrational Emission Profiles
… gap between the peak emissions of Av6. An instrument design is presented which will directly measure the individual peak OH vibrational emission altitudes for the v' = 2, 3, 4, 6, 7, and 8 transitions radiating from the mesosphere. This high altitude resolution altitude profile information …
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Mission Planning and Instrument Design for Stellar Occultation Measurements of Lower Thermospheric Nitric Oxide in the Polar Night
An ultraviolet instrument compatible with a CubeSat form factor is currently being developed at Virginia Tech for the purpose of measuring nitric oxide in the polar night through the stellar occultation technique. This instrument will allow the investigation of how the Sun and Earth systems are …
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Building Mobile Instruments for Improvised Musical Performance
… an approach to building electronic musical instruments for use in improvised music that I have found to be particularly effective for developing flexible, dynamic, and versatile instruments well adapted to the improvised context, and a resultant set of suites of solo improvised character …
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Packed capillary columns for liquid chromatography
… of microscale HPLC which are stringent instrument design, brittle or weak columns, poor column stability, and the lack of commercial instrumentation. The results of these investigations indicate the following. First, the purported sensitivity enhancement is really attributable to solute …
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Ultrafast optical pulse manipulation in three dimensional-resolved microscope imaging and microfabrication
… provides new opportunities and challenges in instrument design. This thesis addresses three aspects of utilizing ultrafast light pulses in two-photon excitation microscopy. First, optical fibers are routinely used in many optical instruments but their use in two-photon microscopy is very …
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Sensing String Displacement as a Control Modality: Sensor Design and Implementation
While stringed instruments are a major part of musical practice across cultures, DMIs in which strings are the primary control interface remain rare. In an effort to support the creation of new stringed DMIs we describe an approach to instrument design in which the static 2-dimensional displacement …
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Electronic music instrument practice and the mechanisms of influence between technical design, performance practice and composition
… techniques involved with particular electronic instruments and proposes an archaeological approach to reconsider the ways in which noise can communicate various details of instrument design and practice to the listener. I present two case studies concerning electronic music practice using …
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Design of Instrumentation and Methodologies for Determination of Free Neutron Characteristics
… large neutron energy range, with human‐portable instrumentation, continues to push the frontier of neutron detection instrumentation design and analysis techniques. In addition, a variety of nuclear nonproliferation and health physics applications require instrumentation that can provide free …
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Imaging of residual limbs using motion processing with IMUs
… imaging of residual limbs is necessary for the design of well-fitting sockets for prosthesis wearers. Unfortunately, current methods of acquiring residual limb geometry are often expensive and inaccessible. A measurement method is proposed using coordinated IMUs to achieve residual limb imaging …
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Church Organizational Culture: Construct Definition and Instrument Development
… organizational culture (COC), and to develop an instrument to measure the construct. In order to accomplish this goal, the researcher undertook a six-phase, mixed-methods study following accepted protocols for construct validation. The six phases of this research study included precedent …
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Radiation Damage Analysis of the Swept Charge Device for the C1XS Instrument
… C1XS, launched onboard Chandrayaan-1, was designed to detect the X-ray fluorescence, caused by solar flares, from the lunar surface. To ensure the instrument was a success a radiation damage study was performed, making recommendations on device operating conditions, instrument design and …
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Simulation and Optimization of ESA Designs for Space Plasma Missions
… to the published test data of three experimental instruments; The Proton Electrostatic Analyzer-High Geometric Factor (PESA-H) instrument on the Wind mission [Lin, et al. 1995], the 2π-Toroidal Analyzer (2πTA) of Young, et al., [1988], and the Hot Plasma Composition Analyzer (HPCA) to be used in …
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Design and analysis of radiometric instruments using high-level numerical models and genetic algorithms
… effort reported here is to develop a radiometric instrument modeling environment to provide complete end-to-end numerical models of radiometric instruments, integrating the optical, electro-thermal, and electronic systems. The modeling environment consists of a Monte Carlo ray-trace (MCRT) model …
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A photophonic instrument concept to measure atmospheric aerosol absorption
A laboratory model of an instrument concept to measure the absorption of solar radiation by atmospheric aerosols was designed, built and tested. The concept was based on the photophonic phenomenon discovered by Bell and an acoustic resonator developed by Helmholtz. The design consisted of two …
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Parameter estimation in imaging Fabry-Perot Doppler spectroscopy
… being use of a CCD in the focal plane of the instrument. This dissertation rigorously addresses the issues of optimal instrument design and signal processing techniques in an effort to advance the precision and accuracy of estimated thermospheric wind velocities and temperatures. This …
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Automobile friction materials: a test instrument and technique for determining dynamic mechanical properties in relation to brake squeal
… was made of all the available commercial test instruments but as none were suitable it was necessary to design and develop a new instrument. The final instrument design, based on longitudinal resonance, enabled modulus and damping to be determined over a wide range of temperatures and …
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Core curricular elements of effective undergraduate technology management academic programs
… (Internet-based and paper-based) survey design using a 5-point Likert rating (strongly agree, somewhat agree, neither agree nor disagree, somewhat disagree, and strongly disagree) was used to solicit opinions from members of the sample population regarding core curricular elements of …
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Methods and devices for noninvasive physiologic fluid volume assessment
… NMR as a viable tool. We then proceeded to design and fabricate practical NMR sensors that could be easily integrated into the clinic. New methods of magnetic instrument design optimized for both field strength and spatial resolution were developed resulting in compact device prototypes with …
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