Notes on the Super Nambu Bracket

We define a super Nambu-Poisson algebra over a super manifold. A super Nambu bracket does not satisfy the usual skew-symmetric property, and we propose another skew-symmetric property. We show that the divergence of super Nambu-Hamiltonian vector fields leads to a generalization of the Batalin-Vilkovisky algebra.Comment: 9 pages, no figures, AMS-LaTeX, ptptex.cls, some errors corrected, version to appear in PT

A Study of Magnetic Properties of Solid Oxygen, Oxygen-Argon and Oxygen-Fluorine

To acquire information on the interaction between oxygen molecules in solid phase, studies have been carried out on the magnetic properties of solid oxygen, oxygen-argon and oxygen-fluorine. Review of the studies on the interaction between oxygen molecules is cited. Magnetic susceptibility was measured by the Faraday method as a function of temperature from 12 K to the melting point of them. Pure oxygen both in α and β phase indicates paramagnetism corresponding to long-range antiferromagnetic order. Oxygen -argon mixtures of 92~66 mol% oxygen content indicate large susceptibility corresponding to δ phase, which can be interpreted in terms of the cluster of oxygen molecules in trimer. Small paramagnetism was found for the oxygenfluorine mixture even as dilute as 10 mol% oxygen content, which may be due to the strong antiferromagnetic interaction. This can be interpreted in terms of super-exchange interaction between oxygen molecules via fluorine molecule

Model-mapped random phase approximation to evaluate superconductivity in the fluctuation exchange approximation from first principles

We have applied the model-mapped RPA [H. Sakakibara et al., J. Phys. Soc. Jpn. 86, 044714 (2017)] to the cuprate superconductors La2CuO4 and HgBa2CuO4, resulting two-orbital Hubbard models. All the model parameters are determined based on first-principles calculations. For the model Hamiltonians, we perform fluctuation exchange calculation. Results explain relative height of Tc observed in experiment for La2CuO4 and HgBa2CuO4. In addition, we give some analyses for the interaction terms in the model, especially comparisons with those of the constrained RPA.Comment: 7 pages, 4 figure

Serration in A l-Zn Alloys Containing a Small Amount of Fe

Effect of addition of Fe on the occurrence of serration in Al-12mass%Zn alloys was investigated. Specimens aged at 293K for various periods after quenching from various temperatures (T(Q)), 398K to 823K, were tensile-tested at room temperature. Serration occurred more easily and more remarkably with decreasing T(Q) for as-quenched specimens: in the case that T(Q)=448K serration was observed both for the binary and Fe added alloys, while in the case that T(Q)=573K none of the three alloys showed serration. For the binary alloy serration was observed only when the aging period was short enough, but addition of Fe to the binary alloy prolonged the aging period where serration could be recognized. Aging rate measured by hardness was remarkably retarded with the increase of Fe addition. These results confirm the interpretation that the serration in Al-Zn alloy occurs in the early stage of aging where small GP zones or solute clusters are formed

Regional integration in East Asia : challenges and opportunities - Part 1: history and institutions

Over the past decade, regional integration has become the focus of intense global interest and debate, and the regionalization of East Asia has figured prominently in that dialogue. East Asia can be described as a heterogeneous region that is both global and intraregional. The authors examine the motivating factors and underlying dynamics of the progression toward closer cooperation in the region beginning from a historical perspective, which sets the stage for an evaluation of the form that regional cooperation might take so as not to sacrifice the benefits of the region's already achieved openness. This examination includes a review of the lingering effects of the 1997-98 Asian crisis, the expanding role of China in the region, the prolonged slump in Japan's economy, and the evolution of regional institutions such as the Asia-Pacific Economic cooperation and the Association of Southeast Asian Nations, among others. The authors focus on trade, direct investment, and the financial and monetary aspects of regional cooperation. In their analysis, they compare other regions, particularly the European Union and the North American Free Trade Agreement. Finally, the authors suggest cooperative steps the region might take over the next decade to promote the growth and stability of its member economies. In this regard, they look at the future role of regional institutions, the prospects for a regional role in promoting trade and foreign direct investment, and the possibilities for financial and monetary cooperation.Economic Theory&Research,Environmental Economics&Policies,Common Carriers Industry,Earth Sciences&GIS,Payment Systems&Infrastructure,Earth Sciences&GIS,Economic Theory&Research,Environmental Economics&Policies,TF054105-DONOR FUNDED OPERATION ADMINISTRATION FEE INCOME AND EXPENSE ACCOUNT,Trade Policy

Fluctuation of the Solute Concentration in Al Rich Al-Zn Alloys

Several Al-Zn alloys containing 0.041-4.4 at % Zn were studied by means of measurements of electrical resistivity. The results obtained are as follows : (1) The electrical resistivity increases when the specimen is annealed at temperatures higher than the solvus temperature of the G.P. zones. The increase of the resistivity is due to the formation of fluctuation. (2) The electrical resistivity of the specimen containing fluctuation is dependent upon annealing temperature only and independent of quenching temperature. (3) The fluctuation is formed in very dilute alloys as 0.041 at % Zn at temperatures higher than the solvus temperature of the G.P. zones. (4) The formation energy of vacancy and the migration energy of the Zn atom in the alloys determined by the formation process of fluctuation are in good agreement with those by the formation process of G.P. zones. (5) In spite of the result (4), it seems that the fluctuation is not the same as the small G.P. zones which are observed in the early stage of aging

Do Stronger Patents Induce More Innovation? Evidence from the 1988 Japanese Patent Law Reforms

Does an expansion of patent scope induce more innovative effort by firms? This article provides evidence on this question by examining firm responses to the Japanese patent reforms of 1988. Interviews with practitioners suggest the reforms significantly expanded the scope of patent rights in Japan, but that the average response in terms of additional R&D effort and innovative output was quite modest. Interviews also suggest that firm organizational structure is an important determinant of the level of response. Econometric analysis using Japanese and U.S. patent data on 307 Japanese firms confirms that the magnitude of the response is quite small.

Regional integration in East Asia :challenges and opportunities - Part II : Trade, finance and integration

The authors analyze the patterns of East Asia's trade and foreign direct investment (FDI) from a global and intraregional perspective, taking into account the importance of trade and FDI interlinkages. They propose two regionally-focused approaches to promoting trade and FDI in East Asia-regional agreements and regional production networks. The East Asia crisis strengthened appeals for regional cooperation in the financial area. As a result, a number of financial arrangements and initiatives have emerged since the crisis, the most prominent of these, the Chiang Mai Initiative. (The Association of Southeast Asian Nations plus China, the Republic of Korea, and Japan decided at their meeting in Chiang Mai, Thailand, in May 2000, to establish a regional network of swap arrangements.) While opening of the capital account is considered desirable in the long run, it is associated with considerable risk, particularly if macroeconomic policies are not sound and financial supervision and regulation is weak. Because of the potential volatility associated with floating regimes and the desire to avoid another crisis in the region, the authors discuss a number of options.Payment Systems&Infrastructure,Environmental Economics&Policies,Common Carriers Industry,Economic Theory&Research,Trade Policy,Economic Theory&Research,TF054105-DONOR FUNDED OPERATION ADMINISTRATION FEE INCOME AND EXPENSE ACCOUNT,Environmental Economics&Policies,Trade Policy,Trade and Services

Japanese Research Consortia: A Microeconometric Analysis of Industrial Policy

The existence of strong spillover' effects of private R&D increases the potential social contribution of R&D but may depress the private incentives to undertake it. R&D consortia offer a potentially effective means of internalizing this externality, and a number of prominent economists have argued for public support of such consortia (e.g., Romer, 1993). Governments in Europe and North America have adopted policies to promote the formation of such consortia, motivated less by economic theory than by the perception that the Japanese government has used such policies to great effect (Tyson, 1992). Despite the existence of a large theoretical literature analyzing the potential benefits and costs of R&D consortia, there has been little corresponding empirical work on their efficacy. In this paper, we undertake the first large-sample econometric study of Japanese government-sponsored research consortia which uses firm-level data on research inputs and outputs to measure the impact of participation on the ex-post research productivity of the firm. We are able to find evidence that frequent participation in these consortia has a positive impact on research expenditure and research productivity. These results hold after controlling for the potential endogeneity of the intensity of participation in consortia to participating firms' research productivity. Furthermore, we find evidence that part of this impact arises from the increased knowledge spillovers that take place within these consortia. Not only are