Yonago College

Yonago, Japan

Yonago College

Yonago, Japan

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Kohno K.,Yonago College | Kawamoto M.,Japan National Institute of Advanced Industrial Science and Technology | Inouye Y.,Electronic Control Systems
IEEE Transactions on Circuits and Systems I: Regular Papers | Year: 2010

The matrix inversion lemma gives an explicit formula of the inverse of a positive definite matrix A added to a block of dyads (represented as BB H) as follows: (A+BBH)-1 = A -1-A-1B(I+BHA-1B)-1B HA-1. It is well known in the literature that this formula is very useful to develop a block-based recursive least squares algorithm for the block-based recursive identification of linear systems or the design of adaptive filters. We extend this result to the case when the matrix A is singular and present a matrix pseudoinversion lemma along with some illustrative examples. Based on this result, we propose a block-based adaptive multichannel superexponential algorithm. We present simulation results for the performance of the block-based algorithm in order to show the usefulness of the matrix pseudoinversion lemma. © 2006 IEEE.


Onoda H.,Kyoto Prefectural University | Yamaguchi T.,Kyoto Prefectural University | Takenaka A.,Yonago College
International Journal of Cosmetic Science | Year: 2012

As a white pigment, titanium oxide is used for cosmetic application. This oxide is well known to have the photo catalytic activity. Therefore, a certain degree of sebum is decomposed by the ultraviolet radiation in the sunlight. In this work, titanium phosphates were prepared as a novel white pigment. Their chemical composition, powder properties, photo catalytic activity, moisture retention and smooth were studied with the addition of urea. These white pigments had little photo catalytic activity. The addition of urea improved the moisture retention of titanium phosphates. The slipping resistance of samples became small by heating, on the other hand, the roughness of samples became small by the addition of urea. © 2011 Society of Cosmetic Scientists and the Société Française de Cosmétologie.


This report is described the examination of some hydrodynamic shapes formed at the annular surface of oil impregnated sintered porous bearing as DC spindle motor's bearing system. Herring Bone (I & II), Three Lobed Type or Sleeve as a radial hydrodynamic shape were proposed, and four kinds of specimens were produced as a porous journal bearing. It was examined experimentally to optimize the hydrodynamic shape of porous journal bearing with pivot supported condition by measuring the lubrication characteristics. This research report is especially referred the experimental examination for Settling Time, Lissajous Curve diagram or Shaft Whirling Behavior by measuring the Time History Waveform of shaft such as above mentioned lubrication characteristics under shaft unsteady condition. Furthermore, in this report, it is investigated to discuss the influences of diametral clearance change and gradient on starting revolution speed change to the lubrication characteristics by measuring the Time History Waveform of shaft under the same condition. In addition, in order to investigate more detailed rotating behavior of shaft, authors practice the Frequency Spectrum Analysis of Time History Waveform with FFT. © 2013 The Japan Society of Mechanical Engineers.


This study proposes the combinations of some hydrodynamic shapes formed on the end or the annular surface of oil impregnated sintered porous bearing as a DC spindle motor's bearing system. Hydro Wave Bearing or Pump In as a thrust hydrodynamic shape, and Herring Bone (I&II), Three Lobed Type or Sleeve as a radial hydrodynamic shape were proposed, and the total of eight kinds of combinations were produced as thrust-radial coupled bearing. It examines to optimize the hydrodynamic shape combination experimentally as thrust-radial coupled bearing by measuring the lubrication characteristics. This research report is especially referred to the experimental examination for Settling Time, Lissajous Curve diagram or Shaft Whirling by measuring the Time History Waveform of shaft such as the lubrication characteristics under unsteady shaft starting condition. Furthermore this report examines the influence of diametral clearance change to the lubrication characteristics such as above mentioned by measuring the Time History Waveform of shaft under shaft starting condition. © 2013 The Japan Society of Mechanical Engineers.


Kuraoka T.,Yonago College
Fuzzy Sets and Systems | Year: 2016

We study (complete) fuzzy ideals on semilattices from the point of view of tensor products of semilattices. We show that the lattice of all complete fuzzy ideals on a semilattice is an extension of tensor product. We define the notion of semicomplete bi-ideals, and show that the lattice of all fuzzy ideals on a distributive lattice is isomorphic to the lattice of all semicomplete bi-ideals. Moreover, we show that the lattice of all (complete) fuzzy ideals on a distributive (algebraic) lattice is distributive. © 2015 Elsevier B.V.


This article organized and analyzed "34 sheets of data materials for Munafuda (Dedication board)" remained in Hachiman shrine in Higashi-yawata, Yonago-city Tottori prefecture. The ordinary configuration for Munafuda of Hachiman shrine has "Pointed end shape" for front edge and "Narrowed rear end shape" for body. The high commonality could be observed in the notation method of contents and we also found there was a stylized or defined form for Munafuda. Furthermore, we revealed that "Eight-Hachiman shrine" were established in Houki region and Izumo region in medieval times by "Data materials of Munafuda".


Here we did an empirical study of the renovation design method and philosophy of Tohgo Murano, based on his drafts of the renovation work in 1980 of Yonago Public Hall built in 1958. As to the building interior, he placed top priority on the improvement of functionality required by the client. And he renovated intensively the appearance only in the back side of the building. It showed that his renovation philosophy keeps the original design in the façade of the building.


Kawabe H.,Yonago College
Modern Physics Letters A | Year: 2013

We construct a two-dimensional (2D) causal dynamical triangulation (CDT) model from a matrix model which represents the loop gas model of closed string. The target-space index is reinterpreted as time or geodesic distance. We apply stochastic quantization method to the model to obtain the Generalized CDT (GCDT), which has additional interaction of creating baby universe. If we take a specific scaling in continuum limit, we realize an extended GCDT model characterized by the noncritical string field theory. © 2013 World Scientific Publishing Company.


Since the Ministry of Education started Eco-School Pilot Model in 1997, eco-schools have increased to over 1450 in number. This study clarified the installation status of ecological equipment and the ventilation and natural lighting of classroom planning through an actual survey of seven elementary eco-schools in Tottori. The results are as follows. 1) The main eco-equipment comprises photovoltaic panels, wood interiors, balconies, top-lighting, material reuse, and biotopes. 2) Maintaining natural ventilation and lighting is important in ensuring that classrooms provide a comfortable environment. 3) Open-style classrooms with multipurpose space have issues with deep recesses, but top-lighting helps improve natural lighting.


Kawabe H.,Yonago College
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics | Year: 2015

We extend the 2 dimensional Causal Dynamical Triangulation (CDT) model from the usual model of closed string to the one of open-closed string. The matrix-vector model describing the loop gas model is modified so as to possess the nature of the CDT, i.e. the time foliation structure. Stochastic quantization method produces interactions of loop and line variables similar to those in the non-critical open-closed string field theories. By taking an appropriate scaling, we realize an extended model of the generalized CDT (GCDT), which keeps the causality in a broad sense. © 2014 The Author.

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