Daido University

About: Daido University is a education organization based out in Nagoya, Japan. It is known for research contribution in the topics: Ultimate tensile strength & Proton exchange membrane fuel cell. The organization has 209 authors who have published 423 publications receiving 3223 citations.

Conversion of Japanese Slang into Standard Japanese Considering Sensibility

Abstract: With the recent spread of communication using social media, exchanging opinions each other on web has become more common irrespective of age and sex. On the other hand, a problem called as “Internet flaming” often occurs along with the increase of social network service users. One of the reasons might be that the users do not recognize meanings/intentions/emotions expressed by other users’ words. In this study, we focused on slangs (Internet slangs) that are often used on SNS but are not registered in dictionaries, then tried to convert them into standard words. We also intended to output more appropriate candidates by considering not only semantic similarity but also affective similarity. The proposed method conducts filtering and re-ranking over the semantically similar candidates obtained based on distributed representations to detect the inappropriate candidates as standard word by focusing on two points: (1) features of slang/standard word and (2) affective similarity between the inputted word and the candidate words. In the evaluation experiment, the proposed method obtained a higher MRR than the baseline method.

Phase of Pendellösung oscillations in X-ray dynamical diffraction for perfect crystals.

Abstract: Formulations are given for the intensities of transmitted and diffracted waves in the Laue case of a perfect crystal. This is applicable irrespective of the magnitudes of both the real and imaginary parts of the Fourier components of the crystal polarizability. The phase shift of the Pendellosung oscillations of the transmitted and diffracted waves is analyzed in detail for a symmetrical Laue case. The phase is determined to shift continuously from out of phase to in phase for absorbing crystals.

Implementation of disturbance attenuation system based on frequency estimation

Abstract: A well-known control system that can reduce the adverse effects of disturbances is the disturbance observer. Whenever we apply a disturbance observer, the disturbance frequency should be known and constant. However, since in many cases of industrial systems the disturbance frequency is varied in some frequency spectrum, it may be difficult to reduce the adverse effect of such disturbances by use of the traditional disturbance observer. Therefore, we have proposed a disturbance observer which can handle frequency variation (DOFV). However, in order to apply DOFV we must measure the disturbance frequency in real time. Therefore, a frequency estimation scheme is required in order to apply DOFV. In this paper, a method for the design of a disturbance attenuation system that can handle frequency variation is proposed. The main idea of this design method is to combine DOFV with a frequency estimator that can estimate the disturbance frequency in real time. Even though the proposed disturbance attenuation system is a low-degree and low-gain controller, it has excellent steady-state disturbance attenuation performance. Numerical simulations and experiments show the usefulness of the proposed disturbance attenuation system. © 2011 Wiley Periodicals, Inc. Electr Eng Jpn, 175(2): 46–53, 2011; Published online in Wiley Online Library (wileyonlinelibrary.com). DOI 10.1002/eej.21073

A Comparative Study of Communication Methods for Evacuation Guidance Systems in Disaster Situations

Abstract: This paper describes communication methods for evacuation guidance systems in disaster areas Because network availability depends on the damage situation in disaster areas, three types of communication methods are presented to deal with various evacuation situations: the infrastructure, ad-hoc and hybrid methods We conduct simulation experiments to compare these communication methods from the viewpoint of sharing information on road conditions among evacuees in disaster areas Experimental results reveal that the ad-hoc method achieves about 90% the performance of the infrastructure method and thus can be an alternative when communication infrastructure has been damaged or malfunctioned We also show that the hybrid method obtains results that are almost as good as the optimal results