There is no abstract available for this thesis.

A tidal and sea level survey was begun in Yaquina Bay, Oregon, on 8 May, 1964. A continuous recording tide gage was installed at the pier of the Oregon State University Marine Science Center. An harmonic analysis of the observed data was made, and the major tidal constants were compared with those published by the Coast and Geodetic Survey. A program was written for the IBM 1410 computer, so that the tide could be predicted at any time using the tidal constants for the Newport area. An investigation of the "meteorological tide" was made by comparison of the predicted and observed tides. River stage, sea level variation, barometric pressure, and wind were considered. Lastly, a comparison was made between the predicted tide at Newport and the predicted maxima and minima of the tide at Newport as determined using the Coast and Geodetic Survey's tide table. / Graduation date: 1965

Several series of measurements of the hydrography, currents, and winds during the past ten years are used as a basis for an overview of the physical oceanography and meteorology during the upwelling season near Newport, Oregon. Data are described using elementary statistics, progressive vector diagrams, coordinate system independent spectra, and complex demodulation. The resulting description strengthens and extends the conceptual model of coastal upwelling. Averages of various series of data are calculated with the aim of making the collected information more readily available and giving perspective to specific data. The time series analysis indicates which bands of frequencies contain important portions of the coherent energy. Complex demodulation is used to show how the energy in selected frequency bands is distributed as a function of time. It is concluded that the long-term seasonal average of the winds and the hydrography behaves smoothly, but the short-term fluctuations around the average are important. The relationships between the short-term variations in the current and hydrography are as yet unclear, but directions are indicated for further analysis and experimentation. / Graduation date: 1972

Graduation date: 1964

Authentic assessment of visitor learning in museum settings is a challenging endeavor. Evaluation literature includes very few studies that link adult visitors' behavior to their learning. Multiple data collection methods in a naturalistic environment hold great promise for increasing understanding of informal public education. In 1997, Oregon State University's Hatfield Marine Science Center (HMSC) in Newport, Oregon, opened a new visitor center. This unique science museum was designed with strong educational goals in mind. The first gallery, the Pattern Garden, was intended to provide a framework of understanding that visitors would build on during their journey through the museum. The three main exhibits in this gallery include a touch pool with live tidepool animals, a sound exhibit with listening stations, and a water wheel that demonstrates chaos theory. This study is a summative evaluation of these three exhibits and their educational effectiveness, both individually and as part of the overall gallery. Data on exhibit holding power and visitor behavior were collected for this evaluation. The touch pool and the sound station were videotaped, while field notes were used to document holding power at the water wheel. In addition, a wireless microphone was mounted at the touch pool to document discussion between visitors and docents. Visitors who spent a minimum of ten seconds at each of the three exhibits were interviewed as they prepared to leave the museum. The interviewer asked the visitor to recall the Pattern Garden exhibits, with special attention to things they learned and associations they made to their daily lives. Both holding power and learning proved to be the greatest at the touch pool. Further investigations are indicated to isolate whether it was the content of the exhibit, the presence of a docent, or other factors that made it particularly effective. The water wheel's holding power was nearly as high as that of the touch pool, but visitor learning scores were lower. Interview data indicated that the complex, difficult nature of the chaos concept was partly responsible for the low educational results. The sound station resulted in moderate holding power and moderate learning. Difficulties and successes in the research design indicate important factors to consider for future evaluation studies at informal science learning centers. / Graduation date: 1999

Graduation date: 1989

Thesis (Ph. D.)--University of Rhode Island, 2003. / Typescript. Includes bibliographical references (leaves 215-222).

Thesis (Ph. D.)--University of Louisville, 2009. / School of Urban and Public Affairs. Vita. "May 2009." Includes bibliographical references (leaves 145-155).

Water used in fresh produce washing is a potential vehicle of foodborne pathogen contamination. This work focused on assessing the sanitizing efficacy of ethanol mist to reduce Salmonella populations on the surfaces of tomatoes and cantaloupes. Ethanol (70%) mist was applied to whole tomatoes and cantaloupe rind plugs using a Biomist sanitation system, which uses CO2 as a carrier gas to spray vapors through a fine droplet spray nozzle. Fresh red tomatoes (Solanum lycopersicum) and cantaloupe (Cucumis melo) plugs were inoculated with Salmonella enterica Newport to a concentration of log 7 CFU/tomato and log 7 CFU/cm2 respectively. Application time (5, 10, and 15 sec), dry vs. wet surface, and stem scar contamination were evaluated on tomatoes, while only application time was evaluated on cantaloupe. Application of ethanol mist for 10 seconds was the most effective treatment time, reducing Salmonella by 3.3 log CFU/tomato. Application of ethanol mist was more effective on dry opposed to wet tomato surfaces by approximately 0.7 log CFU/tomato. Ethanol mist application to inoculated tomato stem scars reduced Salmonella 1.2 log CFU/tomato. Additionally, Salmonella decreased by 1.3 log CFU/cm2 on cantaloupe rind plugs at 10 seconds, again the most effective treatment time. Ethanol mist resulted in sufficient reductions of Salmonella populations on dry tomato surfaces, but was limited in effectiveness if the surface was wet, or if Salmonella adhered to the stem scar. Furthermore, this technique was overall not an efficient method to sanitize cantaloupe surfaces. / Master of Science in Life Sciences / Water is often used in washing and moving fresh produce during harvesting. However, this water is often found to be a source of contamination that can cause the fruits or vegetables to become unsafe to eat. In order to resolve this problem, a mist-type sanitizing system is being explored to wash fresh produce in packinghouses. In this experiment, a mist of ethanol (70%) was applied to whole tomato and cantaloupe plugs using a Biomist sanitation system, which turns liquids into a mist. Whole fresh tomatoes and cantaloupe plugs were infected with Salmonella enterica bacteria. Tomatoes and cantaloupe plugs were treated with ethanol mist for various times of 5, 10, or 15 seconds. Additionally, tomatoes were treated with ethanol to compare a wet surfaced tomato, as well as the tomatoes stem scar (where the vine of the tomato is attached during growing). Ethanol mist application was most effective at 10 seconds, but there was very little difference in bacterial elimination when all the times were compared to the untreated tomatoes. In addition, the mists effectiveness decreased if the surface of the tomato was wet compared to dry, and was even less effective if the bacteria were located where the vine attaches. Also, the ethanol mist has very little effect if bacterial contamination is present on a cantaloupes surface. If a harvested tomato remains dry post harvest, ethanol mist may make for a good washing system. However, it is probably not the best for rough surfaced produce like cantaloupes.

The purpose of this study was to determine the effectiveness of "An Achievable Dream" (AAD), a program developed for at risk elementary students in Newport News, Virginia, in improving academic achievenlent, self concept, and school attendance. One hundred rising fourth grade students were identified in 1992 to participate in the pilot year of this program. Eighty-four students completed the entire year and were included in this study. A review of effective programs currently operating throughout the country examined other programs with similar goals. A case study detailed the history of the program, the adaptations made since the program's inception, and a summary of baseline data on the students. A program evaluation validated the structure of AAD, assessed the impact of AAD as it related to achieving the stated goals, and served as the foundation for a decision model for program continuation. Data was obtained through individual interviews, a review of written program materials, attendance records, and from individual student scores on the Iowa Test of Basic Skills (ITBS) reading comprehension subtest, the Degrees of Reading Power (DRP), and the Piers-Harris Children's Self Concept Scale (PHCSCS). All AAD program components were validated except student selection procedures. Many students were selected for inclusion into the program who did not fit the criteria for selection. Results of the evaluation showed little change in school attendance patterns and a decline in reading achievement percentile scores on both the ITBS and the DRP. Scores on the PHCSCS indicated that the majority of the students had an average to above average self concept. The decision model for program continuation included recommendations for consideration in program continuation. / Ed. D.