Thesis (doctoral)--Ludwig-Maximilian-Universität zu München.

Thesis (M.B.A.)--Boston University

Thesis (doctoral)--Universität zu Köln.

No description available.

The recent and rapid advances in micro electronics technology has resulted in the continued and dramatic reduction in the cost and size of logic circuits used in computers and computer interfaced devices. This technology now makes it possible to purchase a sophisticated computer system and multiple terminal devices for less than $60,000. The subject of this Research Report is to show the feasibility of applying this computer system, including 32 phone line interfaced video display terminals and a time sharing software package, to vend computer generated games for profit.

Purpose: This article examines changes in attitude and beverage consumption after a school-wide policy change replacing sweetened beverages in vending machines with 100% juice and bottled water. Methods: Written questionnaires were administered three times to high school students (n = 278) in an ethnically-diverse, southwest Virginia school district. X ² analysis was utilized and test-retest reliability was assessed with intra-class correlation coefficients. Results: Pearson correlation coefficients for reliability between test and re-test displayed a range from r =0.53 to r =0.73. There were no significant differences in demographics (gender and ethnicity) between time periods. X ² analysis revealed students were significantly more likely to choose healthier beverage vending options after one year compared to baseline (P<0.01). Although beverage vending purchases declined to near significance immediately following the change, there were no significant changes observed between baseline and follow-up (P<0.05). X ² analysis revealed no significant (P<0.05) changes in outside purchase patterns. Students also indicated that the top reasons for snack/beverage choices were hunger, taste, and price. Conclusion: This suggests that students purchase what is convenient and available, regardless of choices. Therefore, environmental changes may be beneficial to promote healthier beverage choices among adolescents.</p> / Master of Science

Purpose: Vending machines are a component of the food environment that influences dietary choices. Previous vending machine studies have focused on schools and work sites. The purpose of this study was to utilize the Nutrition Environment Measurements Survey-Vending (NEMS-V) online tool to evaluate and rank the nutritional value of the vending environment of a large urban university. Methods: A sample size of 40 vending machines at Georgia State University (GSU) was chosen. A list of products in each machine was recorded and given either a red, yellow or green ranking based on their nutrient content. Finally, the NEMS-V online tool was used to generate a report card for each individual machine and for the entire university. Results: No vending machines were given either the Gold (greater than 50% items ranked green or yellow) or Silver (greater than 40% items ranked green or yellow) ranking. Five machines were given the Bronze level ranking, which meant the machines contained at least 30% yellow or green items. The remaining 35 machines contained less than 30% green or yellow items and were therefore not able to be awarded a ranking. Out of the 40 total machines sampled, less than 30% of them could be ranked and therefore the university could not be given an overall award. Conclusions: The poor nutritional quality of the vending environment at Georgia State University indicates a need for change. Improving the number of vending items from red to yellow or green will offer more variety and more nutritious choices for students.

Thesis (M.S.)--Rochester Institute of Technology, 1992. / Typescript. Includes bibliographical references (leaf 41).

Objective: Many Canadian publicly funded recreation facilities have an obesogenic environment. Researchers recommend food and beverage policies to change these environments, however further research is needed to distinguish effective policy approaches. A promising, localized policy approach not yet well evidenced is the use of vending machine contracts with health stipulations to improve nutrition environments. The primary objective of this study was to determine whether a sample of Canadian publicly funded recreation facilities with healthy vending contracts had healthier vending machine nutrition profiles than those facilities with conventional contracts. A secondary research objective was to explore the additional influence of policy quality on the health profile of vending machines. Methods: This quantitative study used results from the baseline assessment done of the broader Eat, Play, Live (EPL) initiative. Vending machine audits and questionnaires were completed in participating publicly funded recreation facilities with vending machines (N=46). Vending product profiles were assessed using the Brand Name Food List which categorizes packaged foods according to the BC Guidelines for Vending in Public Buildings. Mann-Whitney U tests were used to determine if there were significant differences in the health profile of vending products between facilities with healthy vending contracts and those without. Results: Facilities with healthy vending contracts had significantly healthier vending product profiles compared to facilities with conventional contracts. On average, significantly less availability of unhealthy (DNS) products represented these healthier profiles. Vending profiles did not significantly differ based on higher quality contract health stipulations although sample size limited conclusions about this. Conclusion: Facilities with health stipulated in their contract differed from those without health stipulations. This suggests that healthy vending contracts (even with relatively generic stipulations) may be supportive of improved nutrition environments. / Graduate / 2019-03-29

The microbiological quality of raw milk from the perspective of the health of dairy products is one of the most important features. The amount of microorganisms is influenced by storage temperature and time of milk. In the thesis was observed dynamics of total bacteria count (TBC) in raw milk depending on the selected factors (months, seasons, point of collection, the length of storage). To life of microorganisms contributes warm weather. The largest increase in TBC was observed in the months of April and May to 108 thousand /1 Ml. It is necessary to place great emphasis on rapid cooling of milk (max 150 min.) to the desired temperature (8 °C). Increase TBC could be caused by long transportation time of sampling raw milk from a milk vending machine to evaluate the quality and microbiological indicators. In the second part of the thesis are compares the quality and microbiological characteristics of raw milk from selected milk vending machines. When evaluating the samples taken from the farm, average values of TBC were higher (43 thousand/ml) compared to samples collected from the milk vending machines (6 thousand/ml). Reason of higher values from farms could be caused by poor hygiene of the milk and his secondary contaminations. In contrast, the average results from samples taken from the milk vending machines were more than excellent. That´s shows tight control of cooling milk during transportation from the farm to the milk vending machine. Next reason better results is right cooling and to maintain a constant temperature in the grades (from 0.5 to 1 °C). That´s temperature, which prevents the growth of microorganisms.