The Orion Nebula (NGC 1976, M 42) is an H II region composed of a slowly expanding thin zone of photoionized gas on the facing side of the Orion Molecular Cloud. The Orion Nebula is also a famous star formation region in which numerous jets and shocks arise from many young stars. Creating bipolar jets to shed excess angular momentum is an essential process in star formation. The jets interact with the interstellar medium or with wakes of previously passing jets and subsequently form shocks. These shocks can be observed with optical or near infrared emission lines and are called Herbig-Haro (HH) objects. The purpose of the present study was to catalog and study the HH objects in the Orion Nebula, and hence, this will help us understand how stars form in a molecular cloud and then evolve in an H II region. We measured the proper motions (tangential velocities) and radial velocities of the HH objects with the highest possible accuracy. By combining the results of the proper-motion and radial velocity measurements, we could obtain the spatial (three-dimensional) motions of the HH objects, which gave us the opportunity to discover the true physical nature of the HH objects in the Orion Nebula. We were able to measure the proper motions of the HH objects with a 10 km s-1 accuracy using the Hubble Space Telescope (HST) Wide Field Planetary Camera 2 (WFPC2) images in [S II], [N II], Halpha, and [O III], taken 4 to 6 years apart. This is the first study dedicated to measuring the proper motions of HH objects in the Orion Nebula covering the complete range of ionization states. A shock consists of a shock front followed by a collisional excitation zone and a cooling zone in which [O III], [N II], and [S II] emission layers form. Halpha emission comes directly from the collisional excitation zone. The presence of [O III], [N II], or [S II] emissions is a good indicator of the strength of a shock. We identified all the HH flows in the northwest and southeast regions of the Orion Nebula and found two new bipolar objects. We confirmed that the major HH flows in the northwest region were created by an explosive event which took place approximately 1000 years ago. We also found a new HH flow moving toward the northeast in the southwest region of the Orion Nebula. The proper motion of HH 202 was measured with high accuracy for the first time, and the result indicates that HH 202 and HH 203/204 may have emanated from the same unknown origin. (Abstract shortened by UMI.)

Thesis (M. A.)--Trinity Evangelical Divinity School, Deerfield, Ill., 1998. / Abstract. Includes bibliographical references (leaves 124-128).

本文データは平成22年度国立国会図書館の学位論文(博士)のデジタル化実施により作成された画像ファイルを基にpdf変換したものである / Kyoto University (京都大学) / 0048 / 新制・課程博士 / 博士(理学) / 甲第4973号 / 理博第1370号 / 新制||理||765(附属図書館) / UT51-92-J20 / 京都大学大学院理学研究科地球物理学専攻 / (主査)教授 中川 一郎, 教授 田中 寅夫, 教授 住友 則彦 / 学位規則第4条第1項該当

Kyoto University (京都大学) / 0048 / 新制・論文博士 / 博士(医学) / 乙第12575号 / 論医博第2032号 / 新制||医||989(附属図書館) / 28960 / 京都大学大学院医学研究科内科系専攻 / (主査)教授 大森 治紀, 教授 松田 文彦, 教授 坂田 隆造 / 学位規則第4条第2項該当

Os riscos fazem parte do cotidiano das empresas. Eles variam conforme sua natureza, a chance de ocorrer e o impacto que pode ocasionar às organizações. Por diversas razões, as empresas de pequeno e médio portes estão mais suscetíveis à imprevisibilidade e aos efeitos negativos dos riscos. Desse modo, é essencial que criem processos capazes de gerenciar os riscos de modo contínuo e sistêmico. Entretanto, o que se pode constatar é que ainda são raros os casos de empresas desses portes que possuam esses mecanismos de gestão. Essas empresas são fundamentais para o sistema econômico nacional, tanto pela geração de empregos quanto pelo crescimento do PIB e desenvolvimento do país. Na revisão bibliográfica desta pesquisa, o autor busca expor os principais conceitos existentes para o termo \"risco\" que, apesar de ser objeto de estudo há muito tempo, ainda possui definições bastante distintas; busca também apresentar aspectos importantes sobre o Gerenciamento de Riscos Corporativos e detalhar os dois principais modelos usados no mundo: COSO e ISO 31000, além de apresentar um modelo de identificação de riscos que abrange toda cadeia de valor das empresas. Como objetivos, identificar e avaliar quais são os principais riscos envolvidos na gestão de uma pequena empresa nacional do setor de TI, além de propor uma estratégia de tratamento para eles. A metodologia escolhida foi a pesquisa ação, na qual o pesquisador possui uma postura direta e ativa sobre a pesquisa e sobre a problemática. A pesquisa foi realizada sob uma abordagem qualitativa de caráter exploratório. Após identificação, avaliação e proposição de uma estratégia para tratamento dos riscos, conclui-se que é possível a implementação de um processo de Gerenciamento de Riscos Corporativos em uma empresa de pequeno porte e esse processo pode criar condições favoráveis para sobrevivência e crescimento das organizações. Muitos riscos descritos na literatura, que afetam negativamente as pequenas e médias empresas em vários países do globo, foram identificados na empresa analisada, enfatizando a necessidade de gestão dos riscos de um modo sistêmico, abrangente e contínuo. São poucas as pesquisas sobre este tema, na literatura nacional e, portanto, são fundamentais os estudos que possam contribuir para melhor entendimento deste universo. / Risks are part of everyday business. They vary according to their nature, the chance to occur and the impact they can have on organizations. For various reasons, small and medium-sized enterprises are more susceptible to unpredictability and the negative effects of risks. In this way, it is essential that they create processes capable of managing risks in a continuous and systemic way. However, what can be seen is that there are still rare cases of companies of these sizes that have these management mechanisms. These companies are fundamental to the national economic system, both for the generation of jobs and for the GDP growth and development of the country. In the bibliographic review of this research, the author seeks to expose the main concepts existing for the term \"risk\" that, despite being object of study for a long time, still has quite different definitions; he also seeks to present important aspects of Enterprise Risk Management and to detail the two main models used in the world: COSO and ISO 31000, in addition to presenting a model of risk identification that covers the entire value chain of companies. The objectives are to identify and evaluate the main risks involved in the management of a small national IT company, and propose a treatment strategy for them. The methodology chosen was action research, in which the researcher has a direct and active attitude about the research and the problem. The research was carried out under a qualitative approach from an exploratory perspective. After identifying, evaluating and proposing a risk management strategy, it was possible to conclude that it is possible to implement an Enterprise Risk Management process in a small company, and this process can create favorable conditions for the survival and growth of the organization. Many risks described in the literature, which negatively affect small and medium enterprises in several countries of the globe, were identified in the analyzed company, emphasizing the need for risk management in a systemic, comprehensive and continuous way. There are few researches on this topic, in the national literature and, therefore, are fundamental studies that can contribute to a better understanding of this universe.

Kyoto University (京都大学) / 0048 / 新制・論文博士 / 農学博士 / 論農博第22号 / 新制||農||21(附属図書館) / 学位論文||S38||N45(農学部図書室) / 598 / (主査)教授 秦 忠夫, 教授 満田 久輝, 教授 緒方 浩一 / 学位規則第5条第2項該当

This thesis deals with a distinct group of Aegean pottery from the Late Bronze Age known as the Octopus Style, and in particular the Octopus Style stirrup jar, which constitutes the overwhelming majority of the group. Richly and variously decorated, they were produced widely across the Aegean. Sometimes exported or imitated, large and decorative, their presumed function as an object of display and their prestigious character accord with their find contexts. These vases are thus an important source of evidence for understanding the new circumstances in the region after the collapse of the Mycenaean palace system, particularly in relation to Crete, from where they largely owed their inspiration. Aiming first to define the predecessor of the Octopus Style, Late Minoan IIIB octopus- painted vases are examined stylistically and contextually. The study proposes a clearer idea about the painted designs of the Octopus Style produced in each region through a rigorous comparison of the material in order to construct a more concrete picture of regional characteristics and stylistic relationships between each regional group. Design elements on the Octopus Style stirrup jars are systematically described and compared and the relevant stratigraphical and contextual evidence examined to establish the sequence of stylistic development. By taking this approach, it was possible to discern several stylistic groups within each regional group and six phases of development in the Octopus Style stirrup jar, which started and virtually ended with the Late Minoan IIIC period. Through these phases, the stylistic relationships between the regional groups are not constant. A strong influence from Crete is evident on the earliest Rhodian and Naxian Octopus Style, whereas during later phases, mainland stylistic features are more visible than before. On this basis, important changing local power relationships and competing fashions between Aegean societies may be inferred from this decorative pottery.

Kyoto University (京都大学) / 0048 / 新制・論文博士 / 博士(工学) / 乙第11969号 / 論工博第3931号 / 新制||工||1396(附属図書館) / UT51-2007-C281 / 京都大学大学院工学研究科機械物理工学専攻 / (主査)教授 立花 明知, 教授 北村 隆行, 教授 木村 健二 / 学位規則第4条第2項該当

Kyoto University (京都大学) / 0048 / 新制・課程博士 / 博士(理学) / 甲第13599号 / 理博第3257号 / 新制||理||1481(附属図書館) / UT51-2008-C517 / 京都大学大学院理学研究科地球惑星科学専攻 / (主査)准教授 西上 欽也, 教授 平原 和朗, 教授 伊藤 潔 / 学位規則第4条第1項該当

Kyoto University (京都大学) / 0048 / 新制・課程博士 / 博士(工学) / 甲第11574号 / 工博第2520号 / 新制||工||1342(附属図書館) / 23217 / UT51-2005-D323 / 京都大学大学院工学研究科航空宇宙工学専攻 / (主査)教授 土屋 和雄, 教授 北村 隆行, 助教授 小川 欽也 / 学位規則第4条第1項該当