Thesis (MSc)--University of Stellenbosch, 2005. / Bibliography. Also available via the Internet.

This study was conducted to evaluate the effect of communication and information on the potential adoption of optical scanners by hospital pharmacy directors. The study used a randomly selected national mail survey of 600 hospital pharmacy directors. A response rate of 64.17% was attained and the instrument was determined to have adequate reliability. Believability of optical scanner assessment information was compared between directors with high and low optical scanner familiarity. Directors with high familiarity rates the information's influence on their decision to adopt significantly higher than directors with low familiarity. Directors were also asked to rate the importance of the source of information and the optical scanner characteristics when making their decision to adopt. Directors with high familiarity rated management sources, administrative uses and time-savings higher and cost lower in importance. The survey revealed that 18.96% of the respondents were currently using optical scanners, primarily for inventory control.

Thesis (MSc (Physics))--University of Stellenbosch, 2005. / The extremely high light intensities produced by lasers and the increasing use of lasers highlights the need for measures to prevent damage to materials due to exposure to high intensity laser light. In particular it necessitates the development of systems to protect optical sensors, including the human eye. In this work optical limiters were investigated as a system for protecting sensors. An optical limiter transmits ambient light, but absorbs high intensity light. This makes it ideal for protecting sensors from laser radiation, since it allows the sensor to operate unhindered at design intensities while protecting it from harmful high intensity radiation. There are various mechanisms used for optical limiting, and in this work the nonlinear absorption and the nonlinear index of refraction changes of materials were investigated. A facility was established to measure the nonlinear optical properties of a variety of materials, in order to classify them as possible optical limiters. This entailed creating a so called Zscan setup, which enabled us to measure the nonlinear absorption coefficient and the nonlinear index of refraction of a material. The theory and the design of the setup are discussed and experimental results obtained using this setup are presented. A wide variety of material types were investigated to show the versatility of the experimental setup. These included C60, which was analyzed in solution; ZnO which is a crystal; CdS quantum dots in solution; and poly(dioctyl-fluorene), which is a large polymer molecule, in solution. The materials investigated in this work were chosen based on their known strong nonlinear optical properties. Emphasis was placed on measuring the nonlinear absorption coefficients since it was the dominant optical limiting effect of the materials under investigation. The results obtained displayed the same trends as published results and it shows that the established facility was capable of measuring the nonlinear properties of these samples. The experimental limitations of the setup were determined, and critical experimental parameters were identified for measurements of this nature. Improvements to the experimental facility are suggested to improve the accuracy of future measurements.

Thesis (Ph. D.)--University of Chicago, The Graduate School of Business, Aug. 2003. / Includes bibliographical references (p. 54-57). Also available on the Internet.

Thesis (Ph. D.)--Oregon State University, 2009. / Printout. Includes bibliographical references (leaves 204-210). Also available on the World Wide Web.

Thesis (M.S.)--Rochester Institute of Technology, 1989. / Includes bibliographical references (leaves 57-61).

Real-time holography using an active optical heterodyne scanning technique for recording and electron beam addressed spatial light modulator-based reconstruction has recently been studied and demonstrated. Advances in this area are presented in this thesis. For the first time, holograms of two dimensional objects have been recorded and two-dimensional images have been reconstructed using this system. The ability to digitally store holograms recorded by this method has been added to the system. This capability increases the robustness of the overall system and allows for digital processing of the holograms for improved reconstruction. Nonlinear digital processing for fringe contrast enhancement is demonstrated. The use of an intermediate display process has previously been identified as a major drawback in the real-time optical scanning holographic system. A digital frame memory is introduced into the system, eliminating the need for the intermediate display process, and thus improving the system. The two systems are compared. / Master of Science

published_or_final_version / Civil Engineering / Master / Master of Philosophy

No description available.

Thesis. 1976. B.S.--Massachusetts Institute of Technology. Dept. of Mechanical Engineering. / Microfiche copy available in Archives and Engineering. / Bibliography: leaf 22. / by Andrew C. Frechtling. / B.S.