SiC MOSFETにおける電子捕獲および輸送に関する研究

付記する学位プログラム名: 京都大学卓越大学院プログラム「先端光・電子デバイス創成学」京都大学新制・課程博士博士(工学)甲第24623号工博第5129号新制||工||1980(附属図書館)京都大学大学院工学研究科電子工学専攻(主査)教授 木本 恒暢, 教授 川上 養一, 准教授 浅野 卓学位規則第4条第1項該当Doctor of Philosophy (Engineering)Kyoto UniversityDFA

The application of finite element technique to lubrication problems

The work presented in this thesis is concerned with the application of the finite element technique to solve general lubrication problems. Incompressible isothermal condition has been considered as a first step towards the lubricant film investigation. [Continues.

FDI in Emerging Economies: An analysis in a firm heterogeneity model

In recent years, Japanese manufacturers in both competitive and less competitive sectors have penetrated emerging economies, and sales in 2008 by Japanese affiliates established via foreign domestic investment (FDI) exceeded Japan's revenues from exports. To consider this phenomenon and the significance of FDI for emerging economies, this study constructs a two-country model featuring two factors of production, two industries (with different factor intensities), and firm heterogeneity. Thereafter, the study numerically analyzes trends in FDI by industry and examines how the economies of both countries are affected. Results of the analysis show that highly productive firms favor FDI. That is true whether their industries make intensive use of a scarce factor of production or use a more abundant factor intensively. Compared to the situation in which only export is possible, FDI increases competition among firms in both industries. Real wages and welfare increase as a result. On the other hand, low-productivity firms are forced to exit, and the number of firms decreases. This analysis also shows that FDI could work to help prevent a decline in real revenues of industries that make intensive use of a scarce factor of production.

Aging of the Zero-Field-Cooled Magnetization in Ising Spin Glasses: Experiment and Numerical Simulation

A new protocol of the zero-field-cooled (ZFC) magnetization process is studied experimentally on an Ising spin-glass (SG) Fe$_{0.50}$Mn$_{0.50}$TiO$_3$ and numerically on the Edwards-Anderson Ising SG model. Although the time scales differ very much between the experiment and the simulation, the behavior of the ZFC magnetization observed in the two systems can be interpreted by means of a common scaling expression based on the droplet picture. The results strongly suggest that the SG coherence length, or the mean size of droplet excitations, involved even in the experimental ZFC process, is about a hundred lattice distances or less.Comment: 4 pages, 5 fugure