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Japanese Prime Minister Junichiro Koizumi has visited the controversial Yasukuni Shrine in Tokyo five times over five years while Prime Minister. As a result, Japan's relations with China and Korea have declined to their worst state since the end of World War Two. However, Prime Minister Koizumi has accused the two of meddling in Japan's internal affairs - he does not see this as an international issue. For China, Korea, and others the fact that the shrine also includes 14 Class A War Criminals makes the Prime Minister's visits to the Shrine, official or not, an issue of international concern. Why is there such a rift not only between Japan and its neighbors but also between the way Koizumi sees his visits and the way in which China, Korea, and other countries perceive these visits? What do the visits mean? This thesis has three arguments. First, this thesis argues that the Yasukuni Shrine is caught in a paradox of its legacy - a religious shrine and a state memorial to the war dead left untouched from before the war, in a country that since the end of World War Two has had a separation of Church and State. Second, this thesis argues that the domestic politics vis-à-vis Yasukuni are defined by this paradox, with an ill-fitting policy of separation of church and state without resolution of the need to recognize the war dead. Third, this thesis argues that by visiting the Shrine, along with various policies of the Government of Japan that have endorsed and supported the shrine since Japan signed the 1951 San Francisco Peace Treaty, Koizumi demonstrates to Japan's neighbors that it is hollowing out Japan's post war reconciliation. While Japan has officially apologized for its actions in World War Two, for Japan's neighbors, visiting the shrine is a visible sign that Japan does not wish to act very sorry.

The core issue underlying the bulk of scholarly research into the Japanese political economy is the relationship between the bureaucracy and the politicians. My study investigates whether there has been a relative decline in bureaucratic influence and whether politicians are displaying more independence in the policy making process than they did during previous decades. My main hypothesis is that the loss of bureaucratic influence has largely been a function of the declining position of former bureaucrats within the ruling Liberal Democrat Party (LDP), and that it has largely been politicians who were able to enter the Diet at a young age due to hereditary recruitment who have gained influence. Their ability to build up seniority has placed them at an advantage in promotion to key party and government posts due to the adoption of a seniority system of selecting cabinet ministers and party leaders. . I use probit and logit analysis of LDP cabinet and Diet members (1955-2003) to demonstrate the decline of former bureaucrats within the LDP in terms of their overall numbers and their occupancy of key posts. I use cross case study analysis of the work of three major blue-ribbon administrative reform panels (the Provisional Administrative Reform Commission established in 1962, the Second Provisional Administrative Reform Commission established in 1981, and the Administrative Reform Council established in 1996) to demonstrate how the lack of former bureaucrats within the LDP left the Ministry of Finance vulnerable to reform that stripped it of authority and altered its traditional policy preferences. My case studies analysis shows that following the founding of the LDP in 1955, former bureaucrats in the party supported delegating substantial authority to the bureaucracy and resisted attempts to curtail bureaucratic influence, acting as conduits for bureaucratic influence in the LDP. However, over time as former bureaucrats lost their pre eminent position within the LDP, attempts to reduce bureaucratic influence were successful. I conclude that the reforms implemented on the recommendations of the Administrative Reform Council fundamentally changed Japanese financial administration and altered financial policy in a way that was a major departure from traditional bureaucratic preferences.

Economic sanctions have been used as an instrument of American foreign policy ever since the Taft administration adopted the Dollar Diplomacy. This dissertation analyzes the trade Embargo the United States imposed upon Cuba after the Revolution from different perspectives: from the political, considering the main guidelines of American foreign policy toward Latin America, especially during the Cold War, and from the juridical, considering different perspectives of customary international law. Since the embargo was imposed only after American property had been expropriated without compensation, the dissertation analyzes the legality of expropriation, seen from the perspective of both capital-importing and capital-exporting countries, and the legality of economic sanctions as a legitimate peaceful reprisal. Due to the fact that the American embargo against Cuba is quasi-total, that is, consists of a number of different economic sanctions, it is the aim of this dissertation to analyze each of these, and finally, to assess the effectiveness of economic sanctions as an instrument of foreign policy. Many books and articles have been written about this very controversial embargo, almost as old as the Cuban Revolution itself. For the Cubans, it constitutes and "economic blockade", and a violation of Cuba's right to free trade; for the Americans, it is a reprisal for the confiscation of American property. Nonetheless, since the embargo, as stated above, is not a sanction itself but a number of different economic sanctions, it is the aim of this dissertation to analyze each of the sanctions that comprise the embargo and its legality, according to customary international law. Another aim of this dissertation is to prove why the American embargo against Cuba has only enhanced Castro's power and further centralized it. A brief chapter about the economic sanctions the United States imposed upon Chile under President Salvador Allende and the fall of his regime serves to compare the two cases with some similarities where sanctions were applied- in the first without success and in the second with success. Finally, the dissertation aims to prove that a lifting of the American embargo against Cuba is highly unlikely unless there is a change of regime in that nation of the Caribbean.

Young stars are surrounded by massive, rotating disks of dust and gas, which supply a reservoir of material that may be incorporated into planets or accreted onto the central star. In this dissertation, I use high angular resolution observations at a range of wavelengths to understand the structure, ubiquity, and evolutionary timescales of protoplanetary disks.First, I describe a study of Class I protostars, objects believed to be at an evolutionary stage between collapsing spherical clouds and fully-assembled young stars surrounded by protoplanetary disks. I use a Monte Carlo radiative transfer code to model new 0.9 micron scattered light images, 1.3 mm continuum images, and broadband spectral energy distributions. This modeling shows that Class I sources are probably surrounded by massive protoplanetary disks embedded in massive infalling envelopes. For the best-fitting models of the circumstellar dust distributions, I determine several important properties, including envelope and disk masses, mass infall rates, and system inclinations, and I use these results to constrain the evolutionary stage of these objects.Second, I discuss observations of the innermost regions of more evolved disks around T Tauri and Herbig Ae/Be stars, obtained with the Palomar Testbed and Keck Interferometers. I constrain the spatial and temperature structure of the circumstellar material at sub-AU radii, and demonstrate that lower-mass stars are surrounded by inclined disks with puffed-up inner edges 0.1-1 AU from the star. In contrast, the truncated inner disks around more massive stars may not puff-up, indicating that disk structure depends on stellar properties. I discuss the implications of these results for disk accretion, terrestrial planet formation and giant planet migration.Finally, I put these detailed studies of disk structure into a broader context by constraining the mass distribution and evolutionary timescales of circumstellar disks. Using the Owens Valley Millimeter Array, I mapped the millimeter continuum emission toward >300 low-mass stars in the NGC 2024 and Orion Nebula clusters. These observations demonstrate that the average disk mass in each cluster is comparable to the "minimum-mass protosolar nebula," and that there may be disk evolution on one million year timescales.

This dissertation proposes a computational technique for automated "invention" of conceptual schemes of thermal systems. The input provided to the automated problem solver is a description of the streams entering and leaving the system. The output is a network of elementary processes: compression, expansion, heating, cooling, and chemical processes. The problem solver seeks a network that is feasible, and offers an optimal (or at least favorable) combination of energy and capital costs. The synthesis process is modeled as a heuristic search conducted in a state-space of all possible design versions. The main ideas of the dissertation have been implemented in a computer program called TED, which invented a number of nontrivial schemes.TED starts with an initial state (or states), which may be either proposed by the user or generated automatically. TED evaluates each state using a special technique of exergy analysis applied to an infinitesimal temperature interval. This allows us to describe the thermal system by several integral characteristics which are functions of temperature. One particularly important integral characteristic - a measure of system's Second Law infeasibility - is introduced in this work; it allows a uniform treatment of both feasible and infeasible design states.TED then selects the most promising of the available designs. This selection is guided by a specialized search algorithm BP* which is shown to be probabilistically admissible. The results of the exergy analysis are used to perform a look-ahead evaluation of the design states. BP* also uses backpropagation of the state evaluation function to reduce the amount of backtracking.TED then improves the selected design by applying one of the transforming operators and thereby generating a new design. Each transformation involves addition of an incremental network of thermal processes to the original state and reduces either irreversibility (exergy loss) or infeasibility of the thermal system. The application of the transformations is controlled by a heuristic move generation function that selects the most promising transformations. The new design is added to the database of the available design states.The search continues with these evaluate-select-transform iterations until an (approximately) optimal design is found.