京都大学 / 0048 / 新制・課程博士 / 博士(理学) / 甲第22269号 / 理博第4583号 / 新制||理||1658(附属図書館) / 京都大学大学院理学研究科化学専攻 / (主査)教授 大須賀 篤弘, 教授 時任 宣博, 教授 依光 英樹 / 学位規則第4条第1項該当 / Doctor of Science / Kyoto University / DGAM

This dissertation aims to examine the relationship between interorganizational collaboration and the implementation of urban greening policy. Specifically, it discusses bonding and bridging relationships that explain a successful interorganizational collaboration, and to what extent these factors explain the perception of success in the implementation of public programs. The effects of risks of collaboration on the implementation of urban greening policy are also studied. To frame the analysis, this dissertation uses Feiock's institutional collective action (ICA) framework, which aims to understand successful interorganizational collaboration and policy implementation across sectors. The collection of data was carried out in Riyadh City in Saudi Arabia, which is located in the center of Saudi Arabia. In this study, the unit of analysis is the networks of relationships among organizations that work with the Royal Commission for Riyadh City (RCRC). The data were obtained from 44 organizations collaborating to implement urban greening projects in Riyadh City and were collected over 17 days from June 15, 2019 to July 2, 2019. The sampling technique used in this study was snowball sampling. The main statistical methods employed for hypothesis examination were social network analysis (SNA) and ordinary least squares (OLS). The key empirical results indicated that there were 12 major organizations most central within the network (i.e., 11 public organizations, and 1 private organization). Also, the findings revealed that among the 12 organizations, the most central organization within the network was the Ministry of Environment, Water, & Agriculture. Further, the empirical findings indicated that bonding relationships among organizations increase the levels of perceived success in the collaboration to implement urban greening projects. The results indicated that network betweenness (bridging) has no statistically significant effect on the perceived success in interorganizational collaboration. The findings revealed that the three categories of collaboration risks, coordination problems, division problems, and defection problems have no statistically significant effects on perceived success in the collaboration to implement urban greening projects. Overall, the hypotheses were partially supported by the results of the analyses. This dissertation builds upon and expands the application of the ICA framework by using it in an international context. It can inform public managers in public organizations in addition to other organizations that work in a variety of areas regarding the implications of collaborative work. The results may encourage organizations to successfully collaborate with other organizations in adopting policies for climate change adaptation such as urban greening to mitigate the effects of future climatic events. Finally, this study indicates its limitations and future research directions.

This masters thesis optimises production of the step plates (which are parts of the sliding steps systems used in tramways, subways, hi-speed trains etc.) to increase the production rate to meet customers demand. The purpose of the work was reached by detailed analysis of the production process followed by evaluation of the results which led to the list of the possible solutions. The solution with the greatest time improvement was chosen and explained in detail.

Pomocou COHP analýzy sme študovali chemickú väzbu v diboridoch prechodných kovov ako aj v zliatine Ni2MnGa. Elektrónová štruktúra študovaných materiálov bola vypočítaná použitím výpočtov z prvých princípov pomocou metódy PAW. V prípade diboridov tranzitných kovov z výsledkov vyplýva, že sila väzby bór-bór je silne závislá od transferu elektrónov na atómy bóru. Zvyšujúci sa počet valenčných elektrónov v kove spôsobuje destabilizáciu alfa štruktúry kvôli vzájomnej interakcii elektrónov prislúchajúcich jednému atómu (on-site interakcie) v blízkosti Fermiho hladiny. Pre zliatinu s tvarovou pamäťou Ni2MnGa bola použitá metóda DFT+ U upravujúca popis lokalizácie elektrónov. V prípade použitia parametra U na Ni dochádza k destabilizácii kubického austenitu a k stabilizácii tetragonálneho nemodulovaného martenzitu. Naopak, zvýšenie lokalizácie elektrónov mangánu martenzit destabilizuje. Analýza väzieb ukázala, že najsilnejšou väzbou je Ni-Ga s kovalentným charakterom. Zvýšená lokalizácia valenčných elektrónov Mn zvyšuje podiel kovalentnosti Mn-Ni väzby a kovový charakter Ni-Ni väzby. Vplyvom zvýšenej lokalizácie Ni elektrónov sa Mn-Ni väzba stáva viac kovovou.

PSRs are one-sided, emotionally-tinged relationships with media characters such as Peter Pan, Batman; Disney characters such as Mickey Mouse, Cinderella, and Mulan; and celebrities such as Justin Bieber, Rihanna, and Harry Stiles (Giles, 2000). This project situates children’s PSRs within the family communication environment by exploring the relationships between Family Communication Patterns (FCPs), parental management of PSRs, and perceptions of parent-child bonding. Four parental management of PSRs behaviors, Guiding, Prohibiting, Supporting, and Neutrality, were studied with respect to the Conversation and Conformity orientations of FCPs. Parental management behaviors of Guiding, Prohibiting, and Supporting had significant impacts on perceptions of parent-child bonding, but Neutrality on its own did not have any significant influence. Guiding was manifested through the FCP path of Conformity instead of Conversation. Prohibiting had a strong inverse relationship with perceptions of parent-child bonding. Besides Conformity, Prohibiting also had a significant pathway through Conversation. Supporting had a strong and positive relationship with perceptions of parent-child bonding and a significant pathway through Conversation but not through Conformity. Although Neutrality on its own did not have a significant impact, it had a significant impact through Conformity. Overall, this study fulfills its goal to look at the impact of parental communication behaviors on perceptions of the parent-child relationship. In the context of PSRs, parental communication about managing children’s PSRs is significantly related to the perceptions of parent-child bonding, and the impact of these micro communication behaviors is mediated by the overarching communication environment. Therefore, this study recommends that PSRs can be introduced to the mainstream discussion of interpersonal relationships such that family communication scholarship can explore the role of PSRs beyond media effects.

The thesis is focused on the surface treatment used for the preparation of aluminium alloys for the adhesive bonding. The theoretical part can be divided into three chapters. The first of them deals with aluminium alloys, the second one speaks about the adhesive bonding. The surface treatment itself, especially the conversion coating issues, is discussed in the last chapter. The experimental part is focused on the optimalization of a two-step titanium and zirconium based conversion coating technology. In the first part, the aluminium alloy is analysed by the glow discharge optical emission spectroscopy. The second part of the experiment deals with the first step of the technology, acidic deoxidation. The objective was to examine the influence of the exposure time on the morphology of the alloy surface and the shear strength of adhesive joints. In the last part of the experiment, the conversion coatings are prepared and characterised by the scanning electron microscopy and energy dispersive spectroscopy.

This work deals with a theoretical analysis of contacting semiconductor chips using wire-bonding method. There are mentioned basic types of chips packages and their contacts. In the thesis is also described software Ansys. The number of the mechanical stress and deformation simulation within micro-wire during thermocompress process were made.

This master thesis deals with the technology anodic soldering. It focuses mainly on soldering sandwich glass-silicon structures. Describes the soldering method and highlights its advantages. Theoretically discusses the different methods used soldering these structures and assess their possible benefits. This work explores practical ways possible soldering methods on a particular device. These different soldering methods evaluated on the basis of achieved quality connections. This thesis examines the anodic soldering at low temperatures, while there are demands on the shortening of the technological process.

This master’s thesis is divided into two parts. In the first part are these topics: bonding theory, treatment of bonding surface, types of adhesives, adhesives in the transportation industry and construction and stress of bonded joints. In the second part of this thesis is experimental evaluation of the effect of surface of material on strength of bonded joint.

This work deals with silicon chip interconnection with a view to high current up to 10A. A wire bonding method is used for interconnection. The first part of investigation is focused on the modeling and simulation by the help of program ANSYS. Thermo mechanical stressing and current density is important parts of this research. Stress and current density distribution are results of the first part. The experimental part describes transition resistance, electro migration and thermal process in the connection of wire and chip pad. A controlled current source (0 – 10A) is used for measurement. The current source makes it possible to 4-point method measurement with sampling rate 1,5MHz.