Indiana University-Purdue University Indianapolis (IUPUI) / Introduction: The prevalence of those aged 3-25 with an intellectual and developmental disability (I/DD), has increased 17.1% from 1997 to 2008. This study focused on these I/DD: autism spectrum disorder (ASD), cerebral palsy, learning disabilities and spina bifida. Previous studies have found that individuals with an I/DD use health services and the emergency department (ED) more frequently, regardless of payer. Methods: This dissertation will describe and define the characteristics of ED use among children and young adults with an I/DD. A repeated, cross-section of annual data of a national sample distributed by the Agency for Healthcare Research and Quality Healthcare Utilization Project National Emergency Department Sample will be analyzed from 2009-2014. This approach will document the primary clinical reason for ED use, the appropriateness of the need for a visit, and demographic, geographic, and temporal correlates for medical, injury, and psychiatric care visits in the ED. The appropriateness of need will be assessed by the New York University (NYU) Emergency Department Diagnosis Classification method for medical care visits. A logistic regression model will be specified for each visit type. Results: The sample included 386,632 visits with an I/DD diagnosis. The NYU classification method found that 44.6% of all visits for ASD were classified as nonemergent yet the other three I/DD had a non-emergent visit rate ranging 25.9%-28.8%. The ASD sub-sample was 51.8% of all visits for psychiatric care and 50.5% of all visits for injury care. All independent variables tested: admission on weekend, ED trauma level, age, sex, payer source, patient zip code income quarterlies, and patient rurality, were found to be statistically different for each model. Conclusion: The findings indicate the need for development of interventions that are specific to reducing non-emergent ED utilization for children and young adults with a diagnosis of ASD and interventions developed for reduction of emergent ED care for the other I/DD’s. In addition, unique interventions are needed to reduce the utilization of the ED for psychiatric care specifically for the ASD population and utilization of the ED for injury care for all I/DD diagnoses. / 2021-05-08

PhD thesis deals with application of simulation and optimization methods in the field of waste and biomass utilization for energy purposes. Current situation in this field is described in the introductory. Following chapters deal with approaches of creating mathematical models of apparatus and processes used in the field of interest for simulation and optimization purposes. Stochastic methods, which are widely applied for real problems solution, are mentioned as well. The core of the thesis consists in proposal of systematic approach and its application for simulation and optimization model building used in the field of interest. The application is demonstrated through two case studies. The first one deals with the building of simulation model of an existing waste-to-energy plant using its operation data. The second study deals with optimization model building and its application for a problem regarding utilization of biomass in an existing energy system.

京都大学 / 0048 / 新制・課程博士 / 博士(社会健康医学) / 甲第18686号 / 社医博第62号 / 新制||社医||8(附属図書館) / 31619 / 京都大学大学院医学研究科社会健康医学系専攻 / (主査)教授 中原 俊隆, 教授 福原 俊一, 教授 古川 壽亮 / 学位規則第4条第1項該当 / Doctor of Public Health / Kyoto University / DFAM

京都大学 / 0048 / 新制・課程博士 / 博士(農学) / 甲第20636号 / 農博第2243号 / 新制||農||1053(附属図書館) / 学位論文||H29||N5080(農学部図書室) / 京都大学大学院農学研究科地域環境科学専攻 / (主査)教授 北山 兼弘, 教授 田中 千尋, 教授 松浦 健二 / 学位規則第4条第1項該当 / Doctor of Agricultural Science / Kyoto University / DGAM

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Internal combustion engines (ICEs) are essential for the welfare of today’s human civilization yet they contribute to almost 10% of the global CO2 emissions. Reducing the carbon footprint of the ICEs can be achieved by either increasing the engine efficiency to reduce fuel consumption or the utilization of carbon-neutral fuels. This dissertation aims to investigate the effect of the oxidizer composition on the efficiency and performance of the homogenous charge compression ignition (HCCI) engine. It also aims to study the behavior of hydrogen in HCCI engines. The experiments are conducted using a Cooperative Fuel Research (CFR) engine. The study also involves using chemical kinetics simulations to estimate the ignition delay time of hydrogen which is relevant to the HCCI mode of combustion. The results suggest that the specific heat ratio of the oxidizer does not significantly affect the HCCI engine efficiency. On the fuel side, hydrogen showed high sensitivity to engine running conditions due to the lack of negative temperature coefficient (NTC).

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