한국전쟁: 일본의 재군비 및 참여의 분석

학위논문(석사)--서울대학교 대학원 :국제대학원 국제학과(국제협력전공),2020. 2. 신성호.During the Korean War (1950 – 1953), Japan underwent a unique experience. While the first major sequence of the Cold War was undergoing 700 miles away from Tokyo, Japan was in a position where its actions had extreme restrictions. Article 9 of the Japanese Constitution and the American occupation of Japan prevented the country both from holding military forces and from directly partaking in the Korean War. By the end of the war, however, the United States and Japan had agreed on rearming the latter. This thesis focuses on analyzing Japans role during the Korean War, its effect on Japanese rearmament, and the United States attitude toward this issue. It is relatively unknown that the Republic of Korea (hereafter South Korea) and Japan have first cooperated in the early 1950s during the Korean War. The main question here is how this cooperation contributed to Japans rearmament.일본은 한국전쟁 당시 특수한 상황에 놓이게 되었다. 냉전시대의 첫 번째 주요 사건이 도쿄에서 불과 700 마일 덜어진 한반도에서 진행되고 있었지만, 일본의 운신은 매우 제한적이었다. 일본 헌법 제9조 및 미국의 일본 군정기 아래 군사력을 확보하는 것과 한국전쟁에 참전하는 것은 불가능했다. 그러나, 한국전쟁이 끝날 무렵에 미국은 마침내 일본의 재무장에 동의하게 된다. 이 논문은 한국전쟁 당시 일본의 역할과 이것이 일본 재군비에 끼친 영향 및 이에 대한 미국의 입장을 분석하는데 중점을 두었다. 대한민국과 일본이 1950년대 초 한국전쟁에서 처음으로 협력 관계였던 것은 상대적으로 알려져 있지 않다. 여기서 중요한 점은 이 협력 관계가 어떻게 일본의 재무장에 기여했는지다.I. Introduction 1 II. Literature Review 8 III. Post-War Japan: 1945 – 1950 12 1. The United States, SCAP, and the Occupation of Japan 12 2. The Internal Cold War 18 IV. Japan and the Korean War: 1950 – 1953 23 1. Article 9 of the Japanese Constitution 23 2. Japans Korean War 26 3. The National Police Reserve & the Japanese Maritime Safety Agency 36 4. The Unsuccessful Plan of the Pacific Regional Security Pact 41 5. The United States and Japans Rearmament 54 V. Conclusion 70 Reference 73 Abstract in Korean 79Maste

Computational Study of Electron Transport and Dynamics in Nano-Devices

DoctorDevices for nanoscale electronics are proposed. First principles computations are used to evaluate the performance of devices. A nanoscale electronic device is made up of a molecule, as a performing unit, sandwiched by electrodes (and sometimes linkers to bind them all). Understanding the effects of each component of a molecular device is at the heart of designing a useful device. Firstly, the effects of electrodes on the characteristics of an electronic device are studied. Transport characteristics of Au, Ru, and carbon nanotube electrodes are investigated using the nonequilibrium Green function (NEGF) method combined with a density functional theory (DFT). By systematic modification of the device region, the effect of the electrode materials on the electron transport is extracted. The band structure and surface density of states of an electrode material, independent of the choice of other device components, have unique influences on the transmission curve. Carbon nanotube electrodes can offer unusual nonlinear current−voltage characteristics due to semiconducting nature. Secondly, it is shown that simple materials can be combined to play a role of a spin valve, where conductance is controlled by magnetization of electrodes. Graphene is a promising material for spintronics due to its outstanding spin transport property. Its maximally exposed 2pz orbitals allow tuning of electronic structure toward better functionality in device applications. Using the fact that the positions of carbon atoms are commensurate with those of Ni atoms on the substrate, a graphene spin-valve device is proposed based on the epitaxial graphene grown on the Ni (111) surface. Its transport properties are explored with NEGF theory combined DFT. The device has magnetoresistance (110%) due to the strong spin-dependent interaction between the Ni surface and the epitaxial graphene sheet.Thirdly, a DNA sequencing device based on graphene nanoribbon (GNR) is proposed and scrutinized. An ultrafast DNA sequencing can be achieved by electrically distinguishing nucleobases on GNR. Once a nucleobase sit on GNR utilizing π–π interaction, Transmission dips appear in regions characteristic of a nucleobase. Analyzing the molecular orbitals and the features of dips in conductance for our GNR-based sequencing device, it is proven that the Fano resonance is responsible for the characteristic dips of each nucleobase. On the other hand, - interaction is essential in that it reduces a noise in measurements, a major problem suffered by many nanopore-based sequencing devices. Consequently, the complexes of a DNA base bound to graphitic systems are studied. Considering naphthalene as the simplest graphitic system, DNA base-naphthalene complexes are scrutinized up to coupled cluster theory with singles, doubles and perturbative triples excitations [CCSD(T)] at the complete basis set (CBS) limit. The stacked configurations are the most stable where dispersion is a principal cause of binding. We compared the CCSD(T)/CBS results with several density functional methods applicable to periodic systems. The predicted values are 18-24 kcal/mol, large enough to hold a nucleobase tightly on GNR, although many-body effects on screening and energy need to be further considered