Academic literature on the topic 'LD5655.V851 1990.S352'

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Dissertations / Theses on the topic "LD5655.V851 1990.S352"

1

Schaefer, Carl George. "Enhanced energy maneuverability for attack helicopters using continuous, variable rotor speed control." Master's thesis, This resource online, 1990. http://scholar.lib.vt.edu/theses/available/etd-03302010-020156/.

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Schultz, Carole Lynn. "Development of an information literacy course for community college students." Diss., This resource online, 1995. http://scholar.lib.vt.edu/theses/available/etd-10022007-145035/.

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3

Scholz, Joseph T. "Determining effects of text-to-speech synthesis in a multimedia learning environment on science achievement for students with learning disabilities in reading." Diss., Virginia Tech, 1995. http://hdl.handle.net/10919/39158.

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The purpose of this study was to explore the effect of text-to-speech in a multimedia learning environment on science achievement for students with learning disabilities in reading. The researcher examined how student achievement on unit tests was related to their participation with the experimental treatment. A secondary purpose of the study was to determine whether students prefer the combination of digitized audio and text, or text alone. The researcher used a quasi-experimental, counter-balanced, post-test only design for the study. Qualitative information was collected using post experiment individual and small group interviewing techniques. The sample used in this study was selected from students enrolled at The Forman School, a private school specializing in the education of students with learning disabilities. Specifically, the sample consisted of students with dyslexic reading problems. This independent school is located in Connecticut and currently uses multimedia in daily instruction. The sample consisted of 22 students enrolled in life science classes. The students' ages ranged from 13-19 years and the grade levels ranged from 9-12. Intact, pre-grouped students were randomly assigned to the experimental groups. The main thrust of the study was to examine the effect on achievement of the type of instruction (with and without text-to-speech synthesis) applied. The experimental group consisted of students who received modified multimedia instruction (treatment), including the text-to-speech synthesis. The control group consisted of students who received standard multimedia instruction; a series of texts and graphics without text-to-speech synthesis. Both lessons were identical in content and appearance, with the exception of the text-to-speech synthesis modification.<br>Ph. D.
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Schindler, Paul M. "Corrosion detection using metal coatings on fiber optic sensors." Thesis, Virginia Polytechnic Institute and State University, 1995. http://hdl.handle.net/10919/74546.

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Fiber optic sensors have been utilized as corrosion sensors by depositing metal coatings to the surface of the sensors. Three types of fiber optic sensors were investigated as candidates for corrosion detection: the extrinsic Fabry-Perot interferometer (EFPI), the absolute extrinsic Fabry-Perot interferometer (AEFPI), and the long period grating (LPG) fiber optic sensor. The corrosion monitoring technique used with the EFPI and AEFPI sensors exploits the ability of a thick coating of metal to maintain strain information in fiber optic strain sensors. The sensors are placed under tensile stress, and while in the resulting strained position, a thick coating of metal is applied. Due to an increase in the quantity of material, the sensor does not return to its original position upon release, and strain is maintained within the sensor element. As the metal thickness decreases due to corrosion, this residual strain is released, providing the sensing mechanism for corrosion detection. LPG fiber optic sensors have demonstrated their ability as bandstop filters, by coupling the fundamental guided mode to circularly symmetric cladding modes. The cladding modes are extremely lossy due to the fiber jacket and bending along the fiber. Losses at discrete wavelengths can be monitored to determine the onset and progress of metal corrosion. Background theory and experimental results are discussed and reported for EFPI, AEFPI, and LPG fiber optic corrosion sensors. The study is preceded with an overview of different corrosion sensor designs and methods which are used in the area of non-destructive evaluation.<br>Master of Science
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Schrader, Jeffrey A. "A doppler electrophoresis instrument for macromolecular characterizations." Thesis, This resource online, 1990. http://scholar.lib.vt.edu/theses/available/etd-05022009-040443/.

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Schulz, Steven Ernest. "System interactions and design considerations for distributed power systems." Thesis, This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-03022010-020127/.

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Mohammad, Haris. "Modeling the roof deck and determining its effect on the stability of a glulam timber dome." Master's thesis, This resource online, 1990. http://scholar.lib.vt.edu/theses/available/etd-01202010-020120/.

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Taousakis, Michael. "Development and implementation of zone logic concepts on shipbuilding modernization." Master's thesis, This resource online, 1990. http://scholar.lib.vt.edu/theses/available/etd-03302010-020209/.

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Besecky, Edward Joseph. "Computer software to calculate the systematic coordinate differences between two geodetic datums." Master's thesis, This resource online, 1990. http://scholar.lib.vt.edu/theses/available/etd-02022010-020034/.

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10

Linn, Oliver M. "Test data set formulation of data types and sizes for the Federal Aviation Administration's Weather Message Switching Center Replacement." Master's thesis, Virginia Tech, 1990. http://hdl.handle.net/10919/40686.

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<p>In order to ensure the successful demonstration that the Weather Message switching center Replacement (WMSCR) of the Federal Aviation Administration (FAA) can complete its primary mission of accepting and distributing various data formats in use today and those of future systems, including the expected message traffic, this study was initiated.</p> <p> This Test Data set Formulation will specify the various data formats, worst-case traffic load/size, and a distribution scenario for the WMSCR. From this Formulation, an actual Test Data Set can be constructed and used to test the WMSCR.</p> <p> A description of the WMSCR, its operational environment, current users, future users, various message formats and associated sizing requirements per interface are detailed within.</p><br>Master of Engineering
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