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Due to increasing power demands and decreasing component size, thermal management has become the bottleneck for many power electronic applications. The aerospace industry has focused on reducing weight, operating temperature, and pumping power of power converters since these will limit an aircrafts' range and load carrying capacity. This paper outlines a tool created in MATLAB to automate the cold plate design process for DC-DC converters (or similar applications). The tool incorporates a genetic algorithm to fi nd the optimal aligned or staggered pin fi n confi guration that maintains the devices below their critical junction temperature while reducing the system's overall weight and pressure drop. Utilizing this MATLAB design tool, a cold plate was designed, manufactured, and tested. The convection coefficient calculated within MATLAB (via empirical correlations) was veri fed using simplifi ed CFD simulations within 5% of each other. The same CFD setup, boundary condition types, and methodology are then applied for the full-sized prototype cold plate simulations. These simulations were then validated using the experimental results. For all cases, the percentage error between the simulated convection coefficient values (CFD) and the experimental results was less than 12%. The experiments' measured surface temperature and pressure drop errors were less than 8% of the predicted CFD results. Therefore, the MATLAB tool and its correlations/calculations could be veri fied (via CFD) and validated (experimentally) based on good agreement between the CFD and the experimental results. This three-pronged approach (analytical calculations, CFD simulations, and experimental validation) is an effective and robust method to solve heat transfer problems. Overall, with the framework outlined in this thesis, a complete cold plate design can now be completed in weeks instead of months. This streamlined approach will save companies signifi cant time and money in the design and simulation phases, making this tool a valuable addition to the current literature available. / Thesis / Master of Applied Science (MASc)

Background: Larger dishware sizes have been shown to increase food portion sizes served and consumed by adults and children. Less is known about whether dishware size and design influences the amount of food caregivers serve to children. Whether smaller portion design plates can be used to help parents serve age-appropriate portion sizes to their children is unknown. This research is the first to examine the effects of dishware size and design on portion sizes served by caregivers. Methods: A within-subjects quasi-experimental design was used to determine the effects of dishware size and design on the portion sizes served by low-income caregivers to their preschool aged children during a buffet style meal. Three plate conditions were compared: a portion design plate, a plain child size plate, and an adult size plate. We hypothesized that when using the portion design plate, caregivers would serve the smallest amount of food compared to when using either the plain child size plate or the adult size plate. The amount of food served by caregivers to children was assessed using weighted methods. Results: The total amount of food (g) and energy (kcal) served did not differ across dishware conditions. Conclusions: Dishware size and design did not influence portion sizes served by caregivers. Additional factors may affect caregiver serving behaviors. / Epidemiology

The theme of this diploma thesis is design and check load-carrying steel structure of building for sport purposes in two variants. Building is situated in Holešov town. Primary emphasis is placed on purpose of this building and on her integration to the given locality. The steel structure is created by two objels, main (hall) and side part (admin. part). Both of this building have common east wall. Plan dimension of hall part is 40 on 40m and the highest point of this part is 15,9m height above ground. Admin. part is greated like frame with columns in 8x8m grid and 8m height. Overall height of this part is 8m. For analisys of internal forces was constructed spatial bar model which was used for an optimization of partial bars for both limit states. The cladding will be made by system of Kingspan panels.