"Kiichiro Toyoda and the Birth of the Japanese Automobile Industry: Reconsideration of Toyoda-Platt Agreement"

In discussion of the birth of the Japanese automobile industry, most researchers and journalists obviously talk about the Toyota Motor Corporation and the Toyoda-Platt Agreement. It has been widely asserted that the one million yen that was received as a result of the Agreement provided Kiichiro Toyoda with the means to begin doing research on the automobile. But the historical evidence does not support this legendary story, and in many ways contradicts it. This paper aims to set the historical record straight.

Josephson Plasma Mode in Fields Parallel to Layers of Bi_2Sr_2CaCu_2O_{8+\delta}

Josephson plasma resonance measurements under magnetic fields parallel to the CuO_2 layers as functions of magnetic field, temperature, and microwave frequency have been performed in Bi_2Sr_2CaCu_2O_{8+\delta} single crystals with doping range being from optimal to under-doped side. The feature of the resonance is quite unique and cannot be explained by the conventional understandings of the Josephson plasma for H \parallel c, that requires a new theory including coupling effect between Josephson vortex lattice and Josephson plasma.Comment: 2 pages, 2 figure

Physics-guided training of GAN to improve accuracy in airfoil design synthesis

Generative adversarial networks (GAN) have recently been used for a design synthesis of mechanical shapes. A GAN sometimes outputs physically unreasonable shapes. For example, when a GAN model is trained to output airfoil shapes that indicate required aerodynamic performance, significant errors occur in the performance values. This is because the GAN model only considers data but does not consider the aerodynamic equations that lie under the data. This paper proposes the physics-guided training of the GAN model to guide the model to learn physical validity. Physical validity is computed using general-purpose software located outside the neural network model. Such general-purpose software cannot be used in physics-informed neural network frameworks, because physical equations must be implemented inside the neural network models. Additionally, a limitation of generative models is that the output data are similar to the training data and cannot generate completely new shapes. However, because the proposed model is guided by a physical model and does not use a training dataset, it can generate completely new shapes. Numerical experiments show that the proposed model drastically improves the accuracy. Moreover, the output shapes differ from those of the training dataset but still satisfy the physical validity, overcoming the limitations of existing GAN models

An Analysis of Shareholders' Lists for 60 Cotton Spinning Companies in 1898

The cotton spinning companies played an important role in Japanese economic development during the Meiji era. Setting up these businesses required large capital investments. Who financed these companies? More concretely, who were their shareholders? This paper aims to identify shareholders' characteristics at 60 cotton spinning companies in 1898. In order to do this, we have created a database of all shareholders in these companies in 1898, as well as a database of all merchants and industrialists listed in the National Directory of Commerce and Industry (1898 edition). Our main findings are as follows: 1) Most of the shares were owned by people who lived outside the Tokyo or Osaka areas, in the local areas where a company was established. 2) The income level of most shareholders was mainly in the range of 500 - 2000 yen. The role of those with very high incomes as shareholder should not be overemphasized.

"An Analysis of Shareholders' Lists for 60 Cotton Spinning Companies in 1898" (in Japanese)

The cotton spinning companies played an important role in Japanese economic development during the Meiji era. Setting up these businesses required large capital investments. Who financed these companies? More concretely, who were their shareholders? This paper aims to identify shareholders' characteristics at 60 cotton spinning companies in 1898. In order to do this, we have created a database of all shareholders in these companies in 1898, as well as a database of all merchants and industrialists listed in the National Directory of Commerce and Industry (1898 edition). Our main findings are as follows: 1) Most of the shares were owned by people who lived outside the Tokyo or Osaka areas, in the local areas where a company was established. 2) The income level of most shareholders was mainly in the range of 500 - 2000 yen. The role of those with very high incomes as shareholder should not be overemphasized.

Lower tropospheric vertical distribution of aerosol particles over Syowa Station, Antarctica from spring to summer 2004

Vertical distributions of atmospheric aerosol particles were measured nine times up to 5200 m a.s.l. using an aircraft over Syowa Station, East Antarctica during September-December 2004. Measurements were made for number concentrations of condensation nuclei (CN, Dp>10 nm), number-size distribution larger than 0.3 μm diameter, air temperature, humidity, and GPS position. During spring, the vertical profile of CN concentration showed large variability (100-1000 cm^(-3)), but it was mostly constant in summer. Vertical profiles of number-size distribution larger than 0.3 μm showed a systematic shift at altitudes greater than 4000 m. Both concentrations of aerosol number for Dp>0.3 μm and integrated volume between 0.3 and 1.0 μm showed constantly lower values at altitudes greater than 4000 m. These data suggest that the shift of aerosol parameters results from depletion of coarse particles such as sea salts. Maximum concentrations of the volume and CN were obtained respectively from the profiles on 7 October and 29 November 2004. These events are interpreted as sources and transport processes based on synoptic meteorological data, an ocean color index produced by SeaWiFS, and backward air trajectory analysis

Rational design for thermochromic luminescence in amorphous polystyrene films with bis-o-carborane-substituted enhanced conjugated molecule having aggregation-induced luminochromism

We designed the triad molecule, bis-o-carborane-substituted bis(thienylethynyl)benzene, as a filler for realizing thermochromic luminescent behaviors based on conventional polymer films, such as polystyrene. From the optical measurements, it was found that the triad can show solid-state emission and dual-luminescent properties with variable intensity ratios depending on media. From the mechanistic studies including the experiments with the methyl-substituted model compound, it was revealed that dual emission should be originated from the locally excited and twisted intramolecular charge transfer states, and the latter emission band is significantly enhanced in the solid states. We prepared amorphous films containing variable concentrations of the triad with the spin-coating method and investigated optical properties. It was found that intensity ratios were drastically changed by altering the concentration of the triad. By increasing the proportion of the triad, aggregation occurred, and emission color was apparently varied through the changes in intensity ratios of the dual emission property. Based on the aggregation-induced luminochromic property of the triad, thermochromic luminescence was finally realized by heating the amorphous films. The rational design for obtaining thermochromic luminescent amorphous films is illustrated in this paper