Osaka Institute of Technology

About: Osaka Institute of Technology is a education organization based out in Osaka, Japan. It is known for research contribution in the topics: Thin film & Laser. The organization has 2457 authors who have published 4247 publications receiving 49872 citations. The organization is also known as: Ōsaka kōgyō daigaku.

Three-body model analysis of α+d elastic scattering and the 2 H(α,γ) 6 Li reaction in complex-scaled solutions of the Lippmann-Schwinger equation

Abstract: We investigate the $\ensuremath{\alpha}+d$ elastic scattering and the radiative capture reaction of ${}^{2}$H(${\ensuremath{\alpha},\phantom{\rule{-0.16em}{0ex}}\ensuremath{\gamma})}^{6}$Li based on the $\ensuremath{\alpha}$ + $p$ + $n$ three-body model. The $\ensuremath{\alpha}+d$ scattering states are described by using the complex-scaled solutions of the Lippmann-Schwinger equation. We calculate the elastic phase shifts for the $\ensuremath{\alpha}+d$ scattering and the radiative capture cross section of ${}^{6}$Li. We evaluate the contributions of the $\ensuremath{\alpha}$ + $p$ + $n$ structures in those observables. It is found that in the $\ensuremath{\alpha}+d$ scattering process, the deuteron breakup and the rearrangement to the ${}^{5}$He $+$ $p$ and ${}^{5}$Li $+$ $n$ channels play prominent roles in reproducing the observed phase shifts and radiative capture cross section.

A Comparison of the YCBCR Color Space with Gray Scale for Face Recognition for Surveillance Applications

Abstract: Face recognition is an important biometric method because of its potential applications in many fields, such as access control and surveillance. In this paper, the performance of the individual channels from the YCBCR color space on face recognition for surveillance applications is investigated and compared with the performance of the gray scale. In addition, the performance of fusing two or more color channels is also compared with that of the gray scale. Three cases with different number of training images per persons were used as a test bed. It was found out that, the gray scale always outperforms the individual channel. However, the fusion of CBxCR with any other channel outperforms the gray scale when three images of the same class from the same database are used for training. The CBxCR channel gave the best performance for the individual color channels followed by CB, CB-CR, CB/CR and CR respectively. It was also found that, in general, increasing the number of fused channels in-creases the performance of the system.

Fuzzy Principal Component Analysis for Fuzzy Data

Abstract: A fuzzy concept is employed to construct a principal component model which can deal with fuzziness, vagueness or possibility, which is called fuzzy principal component analysis for fuzzy data. The fuzzy principal component analysis analyzes the possibility of fuzzy data. The fuzzy principal component analysis for fuzzy data has three formulations according the portions which the possibilities included in fuzzy data are embodied: (1) an eigenvalue, (2) an eigenvector and (3) both eigenvalue and eigenvector. In this paper, we discuss only the first formulation that an eigenvalue is employed to deal with fuzziness of data. The principal component analysis for fuzzy data is employed in this paper to analyze the features of information technology industry. In this analysis, the financial ratio is employed as an index. We evaluate the possibility of a company activity in the information technology industry.

Two parallel penny-shaped or annular cracks in a functionally graded piezoelectric strip under electric loading

Abstract: In this paper, the mixed-mode fracture problem of a functionally graded piezoelectric material strip with two penny-shaped or annular cracks is considered. It is assumed that the electroelastic properties of the strip vary continuously along the thickness of the strip, and that the strip is under electric loading. The problem is formulated in terms of a system of singular integral equations, which are solved numerically. Numerical calculations are carried out, and the stress and electric displacement intensity factors are presented for various values of dimensionless parameters representing the crack size, the crack location, and the material nonhomogeneity.