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Now showing items 21-40 of 62
Cognitive radios: spectrum sensing issues
(University of Missouri--Columbia, 2007)
with the licensed users and should vacate the band when required. For this it should sense the signals faster. For this purpose various detection schemes like energy detector, matched filter and cyclostationary feature detector are discussed in this report...
Broadband beamforming and direction finding using concentric ring array
(University of Missouri--Columbia, 2005)
Sensor arrays have been used widely in applications including radar, sonar, seismology, biomedicine, communications and imaging. A very popular type of sensor array is circular array, which has almost invariant array pattern ...
Design and fabrication of one and two axis nickel electroplated micromirror array
(University of Missouri--Columbia, 2007)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] MEMS based micromirror devices are gaining importance at a steady pace in the applications related to optical communications and display technology. ...
Implementation of the University of Missouri Terawatt Test Stand and the study of a large, multichanneling, laser tirggered gas switch
(University of Missouri--Columbia, 2006)
The University of Missouri Terawatt Test Stand is one of the world's largest university operated pulsed power facilities. It was developed and implemented, for a fraction of similar facilities cost, under the supervision ...
Microfabricated devices for single cell analysis
(University of Missouri--Columbia, 2006)
BioMEMS or lab-on-a-chip technology is promising technology and enables the possibility of microchip devices with higher throughput or better performance for single cell analysis. This technology is developed from the ...
Scene matching between a quantitative map and a qualitative hand drawn sketch
(University of Missouri--Columbia, 2007)
The goal of this work is to perform scene matching between a sketched map and the scene depicted by the sketch, e.g., as represented by a precise physical map or an occupancy grid map (OGM) built by a robot. In this thesis, ...
Optimum receiver design and performance analysis for wireless communication
(University of Missouri--Columbia, 2005)
This dissertation is devoted to the optimum receiver design and theoretical performance analysis of wireless communication systems operated over fading channels, and this objective is incarnated by means of design, analysis ...
Anti-fog coatings using the super-hydrophobic approach
(University of Missouri--Columbia, 2008)
Surfaces with water contact angles in excess of 150[degrees] have been attracting a great deal of attention. The work done here was in the design and development of an anti-fog coating. The hydrophilic as well as the ...
Spectroscopic ellipsometry analysis of nanoporous low dielectric constant films processed via supercritical carbon dioxide for next-generation microelectronic devices
(University of Missouri--Columbia, 2007)
My research will address issues at the back-end-of-line in microelectronics fabrication, specifically the need for Low-k extendibility. The International Roadmap for Semiconductors (2005) suggested that interconnect insulation must be replaced...
Investigation of the accuracy of Grover's method when solving for the mutual inductance of two single-layer coaxial coils
(University of Missouri--Columbia, 2005)
In 1933 Grover introduced a convenient method of calculating the mutual inductance between two single-layer coaxial coils that is still widely accepted as the standard today. He produced tables of numeric values from Clem's ...
Decadal mass balance of the Antarctic ice sheet from satellite radar altimetry and its contribution to global sea level change
(University of Missouri--Columbia, 2006)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] In this research, we estimated the decadal mass balance of the Antarctic ice sheet using the European Space Agency's ERS-1 and ERS-2 satellite radar ...
Improved contact design for the SiC photo-switch used in high power applications
(University of Missouri--Columbia, 2007)
-switch may not be realized. Reported in this paper is a novel concept of inserting contoured electrodes into the SiC bulk to minimize field crowding in order to improve the breakdown characteristics. The concept is simulated, a fabrication process is designed...
Mesoporous iron oxide energetic composites with slow burn rate, sustained pressure and reduced ESD sensitivity for propellant applications
(University of Missouri--Columbia, 2006)
the electrostatic discharge (ESD) ignition sensitivity of nanoenergetic composites. The composites reported in this thesis will be useful for propellant applications because these propellants in general burn at a slow rate and provide sustained pressure in MPa range...
Low loss film bulk acoustic resonator in liquid environments
(University of Missouri--Columbia, 2008)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] A film bulk acoustic resonator (FBAR) is an acoustic resonator mass sensor using the resonance of longitudinal or shears acoustic waves. There is a ...
A MEMS based Coulter counter for cell sizing
(University of Missouri--Columbia, 2007)
Detection and classification of cells forms an important aspect of medical research in diagnosing diseases and finding remedies at the cellular level. Miniaturized cell detecting devices are desirable not only for on site ...
Electromagnetic effects on soybeans
(University of Missouri--Columbia, 2007)
In this study we have exposed different varieties of soybean seeds to electromagnetic (EM) radiation at a frequency other than that of light. The objective was to determine changes in the germination rate, if any, under ...
Development of a gigawatt repetitive pulse modulator and high-pressure switch test stand and results from high-pressure switch tests
(University of Missouri--Columbia, 2006)
The research described in this thesis documents the efforts in developing repetitively pulsed, high-pressure oil switch technology. A high-pressure oil switch has been designed and optimized for lifetime operation to more ...
Deposition and characterization of high permittivity thin-film dielectrics
(University of Missouri--Columbia, 2006)
As integrated circuit (IC) devices scale to ever smaller nodes, replacing the front end dielectric has become a primary challenge. To enable greater device densities, control power consumption, and enhance performance, a ...
The development of electrohydraulic steering control system for off-road vehicle automatic guidance
(University of Missouri--Columbia, 2007)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] The researches in this thesis focus on the development of computer controlled electrohydraulic steering control system for off-road vehicle automatic ...
A biologically inspired optical flow system for motion detection and object identification
(University of Missouri--Columbia, 2007)
Optical flow is possibly the best known method for motion segmentation. However its application is restricted to offline processing as it requires extensive computational resources and time. This thesis explores an optical ...