start-ver=1.4
cd-journal=joma
no-vol=24
cd-vols=
no-issue=1
article-no=
start-page=135
end-page=152
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1989
dt-pub=19891129
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Numerical Simulation of Multicrack Propagation Behaviour in Steel Structure
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=This paper describes the numerical simulation method of the multi-crack propagation behaviour which appear in a part of civil engineering structures with complex geometrical configuration like steel bridges. Proposed method can treat the interaction of several cracks which locate in a short distance each other, and the process of their growth can be grasped. The method is based on the finite element method, and the linear fracture mechanics is assumed. Proposed method includes following tools for the simulation of the crack propagation behaviour: Automatic Mesh Generators for 3-D, 2-D structural analysis, and 2-D crack propagation analysis, Multi-level Structural Analysis Technique, Estimation Method of the crack growth and the angle of cracks and the modelling method of traffic loadings. The validity of the method is investigated by comparing the result to the experimental one.
en-copyright=
kn-copyright=

en-aut-name=TaniguhiTakeo
en-aut-sei=Taniguhi
en-aut-mei=Takeo
kn-aut-name=谷口健男
kn-aut-sei=谷口
kn-aut-mei=健男
aut-affil-num=1
ORCID=

en-aut-name=SuetsuguTsuyoshi
en-aut-sei=Suetsugu
en-aut-mei=Tsuyoshi
kn-aut-name=末次剛
kn-aut-sei=末次
kn-aut-mei=剛
aut-affil-num=2
ORCID=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=IwasakiMasaki
kn-aut-sei=Iwasaki
kn-aut-mei=Masaki
aut-affil-num=3
ORCID=

affil-num=1
en-affil=
kn-affil=Department of Engineering Science

affil-num=2
en-affil=
kn-affil=Department of Civil Engineering

affil-num=3
en-affil=
kn-affil=Yokogawa Bridge Works, LTD.
END

start-ver=1.4
cd-journal=joma
no-vol=24
cd-vols=
no-issue=1
article-no=
start-page=115
end-page=133
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1989
dt-pub=19891129
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Trends in the Regional Structure of Manufacturing Industries in Japan
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=The rapid economic growth of Japan in the postwar period has brought about the over-concentration of activities in a few large cities, and local regions have been losing their economic vitality due to the regional differentials and the population loss. Regional development planning in Japan has sought to achieve a balanced growth of the nation through the development of industries in local regions. This paper aims to examine the regional structure of manufacturing industries in the postwar period and to
identify its current problems. Three methods, namely the analysis of coefficient of variation, the rateshare analysis and the shift-share analysis are applied using employment data of manufacturing industries for the years 1955 to 1985. Findings show that while the employment of manufacturing industries has been markedly decentralized from metropolitan to local regions, the disparities in growth rates still exist among regions.
en-copyright=
kn-copyright=

en-aut-name=AbeHirofumi
en-aut-sei=Abe
en-aut-mei=Hirofumi
kn-aut-name=阿部宏史
kn-aut-sei=阿部
kn-aut-mei=宏史
aut-affil-num=1
ORCID=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=NogataMikio
kn-aut-sei=Nogata
kn-aut-mei=Mikio
aut-affil-num=2
ORCID=

affil-num=1
en-affil=
kn-affil=Department of Civil Engineering

affil-num=2
en-affil=
kn-affil=Okayama Prefectural Office
END

start-ver=1.4
cd-journal=joma
no-vol=24
cd-vols=
no-issue=1
article-no=
start-page=107
end-page=114
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1989
dt-pub=19891129
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Determination of Unsaturated Soil Hydraulic Properties by Transient Flow Experiments and Parameter Estimation
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=The numerical feasibility of determining soil water retention and hydraulic conductivity functions simultaneously from one-dimensional transient flow experiments in the laboratory by parameter estimation method is evaluated. Soil hydraulic properties are assumed to be represented by van Genuchten's closed-form expressions involving two unknown parameters: coefficients α and n . These parameters are evaluated by nonlinear least-squares fitting of predicted and observed pressure head with time. Gravity drainage experiments are performed for Toyoura standard sand to evaluate the adequacy of this proposed method.
en-copyright=
kn-copyright=

en-aut-name=KohnoIichiro
en-aut-sei=Kohno
en-aut-mei=Iichiro
kn-aut-name=河野伊一郎
kn-aut-sei=河野
kn-aut-mei=伊一郎
aut-affil-num=1
ORCID=

en-aut-name=NishigakiMakoto
en-aut-sei=Nishigaki
en-aut-mei=Makoto
kn-aut-name=西垣誠
kn-aut-sei=西垣
kn-aut-mei=誠
aut-affil-num=2
ORCID=

en-aut-name=TakeshitaYuji
en-aut-sei=Takeshita
en-aut-mei=Yuji
kn-aut-name=竹下祐二
kn-aut-sei=竹下
kn-aut-mei=祐二
aut-affil-num=3
ORCID=

affil-num=1
en-affil=
kn-affil=Department of Civil Engineering

affil-num=2
en-affil=
kn-affil=Department of Civil Engineering

affil-num=3
en-affil=
kn-affil=Department of Civil Engineering
END

start-ver=1.4
cd-journal=joma
no-vol=24
cd-vols=
no-issue=1
article-no=
start-page=93
end-page=105
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1989
dt-pub=19891129
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Propagation Characteristics of Superlattice Potentials and their Optimization
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Propagation of charged carriers in semiconductor
superlattices is analyzed on the basis of the effective mass approximation with appropriate boundary conditions at heterojunctions taken into account. Applying the finite element method, clarified are the effects of details of the potential profile, such as linear and smooth gradings and random fluctuations, on characteristics of superlattices which are expected to work as collector barriers and energy filters in electronic devices.
en-copyright=
kn-copyright=

en-aut-name=TotsujiHiroo
en-aut-sei=Totsuji
en-aut-mei=Hiroo
kn-aut-name=東辻浩夫
kn-aut-sei=東辻
kn-aut-mei=浩夫
aut-affil-num=1
ORCID=

en-aut-name=HatataniTeruki
en-aut-sei=Hatatani
en-aut-mei=Teruki
kn-aut-name=畑谷光輝
kn-aut-sei=畑谷
kn-aut-mei=光輝
aut-affil-num=2
ORCID=

affil-num=1
en-affil=
kn-affil=Department of Electrical and Electronic Engineering

affil-num=2
en-affil=
kn-affil=Department of Electrical and Electronic Engineering
END

start-ver=1.4
cd-journal=joma
no-vol=24
cd-vols=
no-issue=1
article-no=
start-page=81
end-page=92
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1989
dt-pub=19891129
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Analysis of the Radiation Characteristics of a Primary-Feed Waveguide in a Quasi-Optical Antenna for Circular TE(On) Mode
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Are calculated the radiation characteristics of two types of primary-feed waveguides of millimeter wave quasi-optical antennas, which transform circular TE(On) mode into a linearly polarized beam. These antennas are utilized for heating and diagnostics of fusion plasma. Analysis is based on the Huygens-Fresnel principle, which takes the diffraction effect into account. For Convenience in analysis, a feed waveguide is divided into two sections, an uniform waveguide section and a visor section. Assuming that the diameter of the waveguide is several times as large as the wavelength and that the structure of the visor is open, the radiation field is approximated by superposition of direct radiation, and first and second reflection on the visor. Numerical results are presented and compared with experimental results. In these types of waveguides, the shadow section on the visor has a great influence on the radiation field. The results of calculation show that the length of the visor should be longer than that obtained by the geometrical optics, and the longer visor reduces the side-lobe level in the direction of the waveguide axis. The results agree well with those in experiments.
en-copyright=
kn-copyright=

en-aut-name=WadaOsami
en-aut-sei=Wada
en-aut-mei=Osami
kn-aut-name=和田修己
kn-aut-sei=和田
kn-aut-mei=修己
aut-affil-num=1
ORCID=

affil-num=1
en-affil=
kn-affil=Department of Electrical and Electronic Engineering
END

start-ver=1.4
cd-journal=joma
no-vol=24
cd-vols=
no-issue=1
article-no=
start-page=73
end-page=80
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1989
dt-pub=19891129
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Measurement of Microvibration on the Skin Surface
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=There is a small vibration which goes undetected by the naked eyes. It is called a microvibration (MV) or a minor tremor (MT). The MV on the body surface is expected to apply to a clinical examination of the autonomic nervous system. It is not cleared why and how the MV occurs, but there are many papers about its occurrence and clinical
application. In this study, MV measuring system, its estimation and basic characteristics are examined. The difference between head MV and thenar MV, individual MV and diurnal and seasonal change are discussed. The power spectrum of MV is obtained using an autoregressive model.
en-copyright=
kn-copyright=

en-aut-name=OkaHisao
en-aut-sei=Oka
en-aut-mei=Hisao
kn-aut-name=岡久雄
kn-aut-sei=岡
kn-aut-mei=久雄
aut-affil-num=1
ORCID=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=IsayamaYoshiharu
kn-aut-sei=Isayama
kn-aut-mei=Yoshiharu
aut-affil-num=2
ORCID=

en-aut-name=YamamotoYoshitake
en-aut-sei=Yamamoto
en-aut-mei=Yoshitake
kn-aut-name=山本尚武
kn-aut-sei=山本
kn-aut-mei=尚武
aut-affil-num=3
ORCID=

en-aut-name=YamamotoTatsuma
en-aut-sei=Yamamoto
en-aut-mei=Tatsuma
kn-aut-name=山本辰馬
kn-aut-sei=山本
kn-aut-mei=辰馬
aut-affil-num=4
ORCID=

affil-num=1
en-affil=
kn-affil=Department of Electrical and Electronic Engineering

affil-num=2
en-affil=
kn-affil=Department of Electrical and Electronic Engineering

affil-num=3
en-affil=
kn-affil=Department of Electrical and Electronic Engineering

affil-num=4
en-affil=
kn-affil=Department of Electrical and Electronic Engineering
END

start-ver=1.4
cd-journal=joma
no-vol=24
cd-vols=
no-issue=1
article-no=
start-page=63
end-page=72
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1989
dt-pub=19891129
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Measurement of Emotional Response by Similarity in Patterns of Galvanic Skin Reflex
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=There is no doubt that many people feel the peace of mind or the pleasures of senses in appreciating music. But the estimation of the effect is very difficult and the objective estimation can be hardly done. This study proposed the objective estimating method of human emotion utilizing galvanic skin reflex (GSR) which reflects a human psychological activity. In this method, not by individual response, but by the series of response and pattern of appearance of GSR, the emotional response under appreciating music was investigated. In the case of appreciation of the same classic music to several subjects, the individual GSR responses are random and remarkable characteristic could not be find on the results. However, on the patterns of appearance of GSR, the patterns obtaining from the same generation are much similar each other and the patterns obtaining from different generation are less similar. It was cleared that the same music gave different effect on different generations.
en-copyright=
kn-copyright=

en-aut-name=YamamotoYoshitake
en-aut-sei=Yamamoto
en-aut-mei=Yoshitake
kn-aut-name=山本尚武
kn-aut-sei=山本
kn-aut-mei=尚武
aut-affil-num=1
ORCID=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=IsshikiHiromi
kn-aut-sei=Isshiki
kn-aut-mei=Hiromi
aut-affil-num=2
ORCID=

en-aut-name=OkaHisao
en-aut-sei=Oka
en-aut-mei=Hisao
kn-aut-name=岡久雄
kn-aut-sei=岡
kn-aut-mei=久雄
aut-affil-num=3
ORCID=

en-aut-name=YamamotoTatsuma
en-aut-sei=Yamamoto
en-aut-mei=Tatsuma
kn-aut-name=山本辰馬
kn-aut-sei=山本
kn-aut-mei=辰馬
aut-affil-num=4
ORCID=

affil-num=1
en-affil=
kn-affil=Department of Electrical and Electronic Engineering

affil-num=2
en-affil=
kn-affil=Maizuru College of Technology, Maizuru

affil-num=3
en-affil=
kn-affil=Department of Electrical and Electronic Engineering

affil-num=4
en-affil=
kn-affil=Department of Electrical and Electronic Engineering
END

start-ver=1.4
cd-journal=joma
no-vol=24
cd-vols=
no-issue=1
article-no=
start-page=53
end-page=61
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1989
dt-pub=19891129
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=The Diffusion of Sodium Ions into Tin Oxide Thin Films from Glass Substrates
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Electrical resistance and X-ray photoelectron depth profile analysis are studied for antimony doped tin oxide films developed on silica, alkali-free and sodalime slide glass substrates. The sodium ions diffused from the substrates to the films prevented the crystal growth of rutile type tin oxide in the film, resulting in the high electrical resistance. A diffusion layer has been detected for each film with diffuse profiles of multi valent cations (Sn, Si or Ca) at the interface of the tin oxide film and substrate. A greater amount of sodium atoms have been detected in the film developed on the soda-lime glass while almost no sodium atoms have been found in those on the other substrates. This can be explained by the diffusion of the sodium ions in the substrate due to a drastic hydronium-sodium exchange mechanism under highly acidic conditions during the dipping and drying processes.
en-copyright=
kn-copyright=

en-aut-name=OsakaAkiyoshi
en-aut-sei=Osaka
en-aut-mei=Akiyoshi
kn-aut-name=尾坂明義
kn-aut-sei=尾坂
kn-aut-mei=明義
aut-affil-num=1
ORCID=

en-aut-name=
en-aut-sei=
en-aut-mei=
kn-aut-name=TakaoSeiji
kn-aut-sei=Takao
kn-aut-mei=Seiji
aut-affil-num=2
ORCID=

en-aut-name=OdaKiichi
en-aut-sei=Oda
en-aut-mei=Kiichi
kn-aut-name=小田喜一
kn-aut-sei=小田
kn-aut-mei=喜一
aut-affil-num=3
ORCID=

en-aut-name=TakadaJun
en-aut-sei=Takada
en-aut-mei=Jun
kn-aut-name=高田潤
kn-aut-sei=高田
kn-aut-mei=潤
aut-affil-num=4
ORCID=

en-aut-name=MiuraYoshinari
en-aut-sei=Miura
en-aut-mei=Yoshinari
kn-aut-name=三浦嘉也
kn-aut-sei=三浦
kn-aut-mei=嘉也
aut-affil-num=5
ORCID=

affil-num=1
en-affil=
kn-affil=Department of Applied Chemistry

affil-num=2
en-affil=
kn-affil=Japan Exran Co. Ltd.

affil-num=3
en-affil=
kn-affil=Department of Applied Chemistry

affil-num=4
en-affil=
kn-affil=Department of Applied Chemistry

affil-num=5
en-affil=
kn-affil=Department of Applied Chemistry
END

start-ver=1.4
cd-journal=joma
no-vol=24
cd-vols=
no-issue=1
article-no=
start-page=25
end-page=39
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1989
dt-pub=19891129
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=An Expert System for the Scheduling of a Flexible Assembly Line for Multi Item Products
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=An expert system, in which preconditions and rules are expressed in logical formulas, is developed to support the scheduling of an automated job shop type multi-item assembly line. This system has the foIIowing characteristics to apply any case of schedulings: (1)Forward scheduling orbackward scheduling can be made. (2)The criterion on the input order of products, the dispatching process at each assembly station, and the selection of products from a buffer can be selected from several priority criteria. (3)Layout, number and velocity of vehicles, and the capacity of each buffer can be changed.
en-copyright=
kn-copyright=

en-aut-name=KajiharaYasuhiro
en-aut-sei=Kajihara
en-aut-mei=Yasuhiro
kn-aut-name=梶原康博
kn-aut-sei=梶原
kn-aut-mei=康博
aut-affil-num=1
ORCID=

en-aut-name=OsakiHirokazu
en-aut-sei=Osaki
en-aut-mei=Hirokazu
kn-aut-name=大崎紘一
kn-aut-sei=大崎
kn-aut-mei=紘一
aut-affil-num=2
ORCID=

affil-num=1
en-affil=
kn-affil=Graduate school of natural science and technology

affil-num=2
en-affil=
kn-affil=Department of mechanical engineering
END

start-ver=1.4
cd-journal=joma
no-vol=24
cd-vols=
no-issue=1
article-no=
start-page=13
end-page=24
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1989
dt-pub=19891129
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Fundamental Study on Electrical Discharge Machining
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=The generation mechanism of crater in electrical discharge machining is analyzed with a single pulse discharge device for alloy tool steel, black alumina ceramics, cermet and cemented carbide, investigating the gap voltage, the discharge current, the shape of crater, the wear of electrode and so on. The experimental analysis makes it clear that the shape of crater has a characteristic feature for the kind of workpiece. The shape of electrode, which changes with the wear by an electric spark, has a significant effect on the shape of crater. The diameter and the depth of crater have a close relation to the discharge energy for alloy tool steel, black alumina ceramics and cermet, while those for cemented carbide are related to the discharge current. The shape factor which is the ratio of the depth to the diameter of crater is different for the work material.
en-copyright=
kn-copyright=

en-aut-name=UnoYoshiyuki
en-aut-sei=Uno
en-aut-mei=Yoshiyuki
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=NakajimaToshikatsu
en-aut-sei=Nakajima
en-aut-mei=Toshikatsu
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=EndoOsamu
en-aut-sei=Endo
en-aut-mei=Osamu
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

affil-num=1
en-affil=
kn-affil=Department of Mechanical Engineering

affil-num=2
en-affil=
kn-affil=Department of Mechanical Engineering

affil-num=3
en-affil=
kn-affil=Department of Mechanical Engineering
END

start-ver=1.4
cd-journal=joma
no-vol=24
cd-vols=
no-issue=1
article-no=
start-page=1
end-page=12
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=1989
dt-pub=19891129
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Effects of Drive System Lubricant Additives upon Rolling Fatigue of Carburized and Hardened Steel Rollers
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=To clarify the effects of a drive system lubricant additive upon rolling fatigue of rollers manufactured from carburized and hardened steel, three types of oil were used as lubricants: one mineral base oil and the other two mineral base oils to which an S-P additive package and ATF additive package were added, respectively. These specimens were tested for sliding/rolling fatigue and examined for failure on the surface, rolling fatigue strength, and other properties. Roller surface temperatures and inter-roller frictional coefficients were found scarcely affected by the type of oil used. Irrespective of the difference in oil type, failure on the surface was found to be entirely spalling attributable to cracks generated in the subsurface. The depth at which spalling cracks had taken place was found nearly coincident with the depth at which a ratio of reversing orthogonal shear stress to hardness had amplitude A(Tyz/Hv) maximized. These depths were larger as Hertz stress became more prominent. Nevertheless, they were found hardly affected by the type of oil. Although rolling fatigue strength did not show a significant difference dependent upon the type of oil, it may be said that fatigue life would be somewhat negatively affected by an extreme pressure coated film with a content of sulfur and phosphorus.
en-copyright=
kn-copyright=

en-aut-name=YoshidaAkira
en-aut-sei=Yoshida
en-aut-mei=Akira
kn-aut-name=吉田彰
kn-aut-sei=吉田
kn-aut-mei=彰
aut-affil-num=1
ORCID=

en-aut-name=OhueYuji
en-aut-sei=Ohue
en-aut-mei=Yuji
kn-aut-name=大上祐司
kn-aut-sei=大上
kn-aut-mei=祐司
aut-affil-num=2
ORCID=

en-aut-name=FujiiMasahiro
en-aut-sei=Fujii
en-aut-mei=Masahiro
kn-aut-name=藤井正浩
kn-aut-sei=藤井
kn-aut-mei=正浩
aut-affil-num=3
ORCID=

affil-num=1
en-affil=
kn-affil=Department of Mechanical Engineering

affil-num=2
en-affil=
kn-affil=Department of Mechanical Engineering

affil-num=3
en-affil=
kn-affil=Department of Mechanical Engineering
END