バングラデシュにおける製革産業の発展と河川環境汚染に関する政治経済学的研究

東京海洋大学博士学位論文 平成25年度(2013) 応用環境システム学 課程博士 甲第309号指導教員: 濱田武士全文公表年月日: 2014-01-10東京海洋大学201

Analysis of stability and bifurcations of limit cycles in Chua's circuit through the harmonic balance approach

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS: PART

Novel TCAD oriented definition of the off-state breakdown voltage in Schottky-gate FETs: a 4H SiC MESFET case study

Physics-based breakdown voltage optimization in Schottky-barrier power RF and microwave field-effect transistors as well as in high-speed power-switching diodes is today an important topic in technology computer-aided design (TCAD). OFF-state breakdown threshold criteria based on the magnitude of the Schottky-barrier leakage current can be directly applied to TCAD; however, the results obtained are not accurate due to the large uncertainty in the Schottky-barrier parameters and models arising above all in advanced wide-gap semiconductors and to the need of performing high-temperature simulations to improve the numerical convergence of the model. In this paper, we suggest a novel OFF-state breakdown criterion, based on monitoring the magnitude (at the drain edge of the gate) of the electric field component parallel to the current density. The new condition is shown to be consistent with more conventional definitions and to exhibit a significantly reduced sensitivity with respect to physical parameter variation

International Trade, Consumer Behavior and Trust: Factors Affecting Agribusinesses in Developing Countries. Executive Interview: Ronald D. Hampton, Chair and Associate Professor of Marketing University of Nebraska

With the increasing complexity of global food systems, producers in developing countries are faced with challenges associated with market access to developed and other developing countries. There is clear evidence that the fastest growing developing countries are the ones engaging in trade and participating in the global market. The difficulty for developing countries, especially Small and Medium Enterprises (SMEs) in those countries is the logistics and agreements needed to enter international markets and benefit from trade. Global production networks are becoming extremely complex. Arms-length trade is now confined to commodities with low returns, thus access to high-income yielding activities requires participation in global value chains. Over the past decades, the global food system has concentrated in the hands of a few large companies. All these changes raise questions about market structures, market power, and strategies for small-scale agribusinesses in developing countries to insert themselves into the global food system. This paper summarizes the interview conducted with Dr. Ronald D.Agribusiness,

Colored noise in oscillators. Phase-amplitude analysis and a method to avoid the Ito-Stratonovich dilemma

We investigate the effect of time-correlated noise on the phase fluctuations of nonlinear oscillators. The analysis is based on a methodology that transforms a system subject to colored noise, modeled as an Ornstein-Uhlenbeck process, into an equivalent system subject to white Gaussian noise. A description in terms of phase and amplitude deviation is given for the transformed system. Using stochastic averaging technique, the equations are reduced to a phase model that can be analyzed to characterize phase noise. We find that phase noise is a drift-diffusion process, with a noise-induced frequency shift related to the variance and to the correlation time of colored noise. The proposed approach improves the accuracy of previous phase reduced models