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( 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).
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.
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.
Nanomaterials for Advanced Electrode of Low Temperature Solid Oxide Fuel Cells (SOFCs)
Ishihara, Tatsumi The Korean Ceramic Society 2016 한국세라믹학회지 Vol.53 No.5
The application of nanomaterials for electrodes of intermediate temperature solid oxide fuel cells (SOFC) is introduced. In conventional SOFCs, the operating temperature is higher than 1073 K, and so application of nanomaterials is not suitable because of the high degradation rate that results from sintering, aggregation, or reactions. However, by allowing a decrease of the operating temperature, nanomaterials are attracting much interest. In this review, nanocomposite films with columnar morphology, called double columnar or vertically aligned nanocomposites and prepared by pulsed laser ablation method, are introduced. For anodes, metal nano particles prepared by exsolution from perovskite lattice are also applied. By using dissolution and exsolution into and from the perovskite matrix, performed by changing $P_{O2}$ in the gas phase at each interval, recovery of the power density can be achieved by keeping the metal particle size small. Therefore, it is expected that the application of nanomaterials will become more popular in future SOFC development.
Evaluation of a Self-Adaptive Voltage Control Scheme for Low-Power FPGAs
Ishihara, Shota,Xia, Zhengfan,Hariyama, Masanori,Kameyama, Michitaka The Institute of Electronics and Information Engin 2010 Journal of semiconductor technology and science Vol.10 No.3
This paper presents a fine-grain supply-voltage-control scheme for low-power FPGAs. The proposed supply-voltage-control scheme detects the critical path in real time with small overheads by exploiting features of asynchronous architectures. In an FPGA based on the proposed supply-voltage-control scheme, logic blocks on the sub-critical path are autonomously switched to a lower supply voltage to reduce the power consumption without system performance degradation. Moreover, in order to reduce the overheads of level shifters used at the power domain interface, a look-up-table without level shifters is employed. Because of the small overheads of the proposed supply-voltage-control scheme and the power domain interface, the granularity size of the power domain in the proposed FPGA is as fine as a single four-input logic block. The proposed FPGA is fabricated using the e-Shuttle 65 nm CMOS process. Correct operation of the proposed FPGA on the test chip is confirmed.
Ishihara, Masahiko,Nakano, Makoto,Ishii, Kazuyoshi Korean Institute of Industrial Engineers 2014 Industrial Engineeering & Management Systems Vol.13 No.3
This paper proposes a management system for the educational program of production managers on the basis of value co-creation by the learner and the instructor. The program combines an intelligent knowledge-based approach with the kaizen activity program. The program helps individuals acquire knowledge and skills to ensure the total rather than the partial optimization of processes and operations facilitating continuous improvement in the workplace. To achieve these goals, the program uses models of a learning process and a swing of enlightenment. In addition, the program is supported by a framework of academic, business people, consultants, and government officers. The program was developed using an instructional design approach. This paper discusses the process of developing and managing the educational program between 2006 and 2012 as well as the results obtained.