HIERARCHICAL CLUSTER ANALYSIS by arboART NEURAL NETWORKS and its APPLICATION to KANSEI EVALUATION DATA ANALYSIS

( Shigekazu Ishihara ),( Keiko Ishihara ),( Mitsuo Nagamachi ) 한국감성과학회 2002 춘계학술대회 Vol.2002 No.-

ART (Adaptive Resonance Theory [1]) neural network and its variations perform non-hierarchical clustering by unsupervised learning. We propose a scheme arboART for hierarchical clustering by using several ART1.5-SSS networks. It classifies multidimensional vectors as a cluster tree, and finds features of clusters. The Basic idea of arboART is to use the prototype formed in an ART network as an input to other ART network that has looser distance criteria (Ishihara, et al., [2,3]). By sending prototype vectors made by ART to one after another, many small categories are combined into larger and more generalized categories. We can draw a dendrogram using classification records of sample and categories. We have confirmed its ability using standard test data commonly used in pattern recognition community. The clustering result is better than traditional computing methods, on separation of outliers, smaller error (diameter) of clusters and causes no chaining. This methodology is applied to Kansei evaluation experiment data analysis.

Morphometrics for Shape Analysis in Kansei Engineering

Shigekazu Ishihara,Keiko Ishihara 대한전자공학회 2008 ITC-CSCC :International Technical Conference on Ci Vol.2008 No.7

In Kansei engineering, we have been treated sample shapes as categorical variable (nominal scale). For example, categories like wide / tall. These categories were assigned as x variables and evaluation values on a Kansei word was assigned as a y variable of linear equation. This equation has been computationally solved by Quantification theory type 1 or similar regression methods. Although qualitative analysis of shapes is relatively robust and commonly used, but shapes are not directly treated. In this study, we attempted to treat shapes as statistical values with the various methods of Morphometrics those have been developed between paleontology, biology and statistics. By treating shapes as statistical values, we can apply various statistical methods from basic statistics such as testing distribution to multivariate analysis techniques (i.e., classification, projection onto lower numbers of dimension).

LIFECYCLE OF THE INTERSTELLAR DUST GRAINS IN OUR GALAXY VIEWED WITH AKARI/MIR ALL-SKY SURVEY

Ishihara, D.,Kaneda, H.,Mouri, A.,Kondo, T.,Suzuki, S.,Oyabu, S.,Onaka, T.,Ita, Y.,Matsuura, M.,Matsunaga, N. The Korean Astronomical Society 2012 天文學論叢 Vol.27 No.4

The interstellar dust grains are formed and supplied to interstellar space from asymptotic giant branch (AGB) stars or supernova remnants, and become constituents of the star- and planet-formation processes that lead to the next generation of stars. Both a qualitative, and a compositional study of this cycle are essential to understanding the origin of the pre-solar grains, the missing sources of the interstellar material, and the chemical evolution of our Galaxy. The AKARI/MIR all-sky survey was performed with two mid-infrared photometric bands centered at 9 and $18{\mu}m$. These data have advantages in detecting carbonaceous and silicate circumstellar dust of AGB stars, and the interstellar polycyclic aromatic hydrocarbons separately from large grains of amorphous silicate. By using the AKARI/MIR All-Sky point source catalogue, we surveyed C-rich and O-rich AGB stars in our Galaxy, which are the dominant suppliers of carbonaceous and silicate grains, respectively. The C-rich stars are uniformly distributed across the Galactic disk, whereas O-rich stars are concentrated toward the Galactic center, following the metallicity gradient of the interstellar medium, and are presumably affected by the environment of their birth place. We will compare the distributions of the dust suppliers with the distributions of the interstellar grains themselves by using the AKARI/MIR All-Sky diffuse maps. To enable discussions on the faint diffuse interstellar radiation, we are developing an accurate AKARI/MIR All-Sky diffuse map by correcting artifacts such as the ionising radiation effects, scattered light from the moon, and stray light from bright sources.

名古屋城下における如來敎信仰 -佛敎と如來敎、そして「いかに救われるか」という問い-

( Ishihara Yamato ) 동서대학교 일본연구센터 2012 次世代 人文社會硏究 Vol.8 No.-

Nyoraikyo is a religion which founded by former samurai servant Kino in Nagoya castle town in 1802.Nyoraikyohas beenviewed as ``Minshushukyo`` which is a concept of Japanese historical studies.This concept has been appreciated because it`s established by people, which means a movement from pre-modern to modern in Japanese history. But, I have some questions. Is only ``Minshushukyo`` important? Are there any differences between ``Minshushukyo`` and the other religions in the same age? In this essay, first,I`d like to focus on the Buddhism which has been ignored in studies of ``Minshushukyo``, and the internal religious controversies of ``Jodo-ShinSect``shouldbe noticed since it happened in the same age with Nyoraikyo.Secondly, I attend topoint out that they have same problems.At last, I`ll try torevaluethe ``Minshushukyo`` relatively in 19th century.

A likely detection of a local interplanetary dust cloud passing near the Earth in the AKARI mid-infrared all-sky map

Ishihara, D.,Kondo, T.,Kaneda, H.,Suzuki, T.,Nakamichi, K.,Takaba, S.,Kobayashi, H.,Masuda, S.,Ootsubo, T.,Pyo, J.,Onaka, T. Springer-Verlag 2017 Astronomy and astrophysics Vol.603 No.-

Preparation of Aromatic ${\beta}-Selenolactams$ and Their Bioactivities as Agricultural Chemicals

Ishihara, Hideharu,Kato, Shinzi,Kimura, Mitsutoshi 대한약학회 2007 Archives of Pharmacal Research Vol.30 No.8

The purpose of this study was to investigate the possibility of aromatic ${\beta}-selenolactams$ being used in agricultural chemicals. A series of ${\beta}-selenolactams$ with aromatic substituents at the 1-, 2- and 3-positions were synthesized and their bioactivities were evaluated. Acarianicidal and insecticidal activity against common destructive insects, antibacterial activity against seven common plant pathogens, and plant growth activity of typical food crops were investigated. We found that introduction of 4-chloro and 4-methyl groups on 2- or 3-phenyl groups of the ${\beta}-selenolactam$ ring brought about acarianicidal activity against adults and eggs of Plutella xylostella. However, except for moderate to weak effect on fatality of Culex pipiens molestus Forskal, insecticidal activity against two other kinds of insects, antibacterial activity against plant pathogens, and activity on plant growth regulation were not detected among the ${\beta}-selenolactam$ derivatives.

Numerical study of turbulent wake flow behind a three-dimensional steep hill

Ishihara, Takeshi,Hibi, Kazuki Techno-Press 2002 Wind and Structures, An International Journal (WAS Vol.5 No.2

A numerical investigation on the turbulent flows over a three-dimensional steep hill is presented. The numerical model developed for the present work is based on the finite volume method and the SIMPLE algorithm with a non-staggered grid system. Standard $k-{\varepsilon}$ model and Shih's non-linear model are tested for the validation of the prediction accuracy in the 3D separated flow. Comparisons of the mean velocity and turbulence profiles between the numerical predictions and the measurements show good agreement. The Shih's non-linear model is found to predict mean flow and turbulence better than the Standard $k-{\varepsilon}$. Flow patterns have also been examined to explain the difference in the cavity zone between 2D and 3D hills.

Ecophysiological Characteristics of High Yielding Rice Cultivars

Ishihara Kuni 한국작물학회 1991 한국작물학회 학술발표대회 논문집 Vol.1991 No.-

The Development of SOR Lithography Technology

Ishihara, Sunao The Institute of Electronics and Information Engin 1995 전자공학회지 Vol.22 No.2

This paper reviews NTT Laboratories' research and development of x-ray lithography during the last ten years since the application of synchrotron orbital radiation(SOR). First, the historical background of x-ray lithograhpy research, NTT's research programs on synchrotron x-ray lithography(SOR lithography), and the current status of NTT's SOR lithography system are overviewed. Then, the key elements of SOR lithography system are reviewed, including the electron storage ring, the x-ray stepper, and the x-ray mask. Finally the appilcation of SOR lithography technology to device fabrication is reported.

Numerical study on dynamics of a tornado-like vortex with touching down by using the LES turbulence model

Ishihara, Takeshi,Liu, Zhenqing Techno-Press 2014 Wind and Structures, An International Journal (WAS Vol.19 No.1

The dynamics of a tornado-like vortex with touching down is investigated by using the LES turbulence model. The detailed information of the turbulent flow fields is provided and the force balances in radial and vertical directions are evaluated by using the time-averaged axisymmetric Navier-Stokes equations. The turbulence has slightly influence on the mean flow fields in the radial direction whereas it shows strong impacts in the vertical direction. In addition, the instantaneous flow fields are investigated to clarify and understand the dynamics of the vortex. An organized swirl motion is observed, which is the main source of the turbulence for the radial and tangential components, but not for the vertical component. Power spectrum analysis is conducted to quantify the organized swirl motion of the tornado-like vortex. The gust speeds are also examined and it is found to be very large near the center of vortex.