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41.
42.
Feng ZHANG Katsunori OKAWA Makoto KIMURA 《Frontiers of Architecture and Civil Engineering in China》2008,2(3):233-241
In this paper, dynamic behavior of a grouppile foundation with inclined piles in loose sand has been investigated with centrifuge
model tests. The test results are also simulated with elastoplastic dynamic finite element method, in which, not only sectional
force of piles, stress of ground, but also deformation of piles are calculated using a three-dimensional elastoplastic dynamic
finite element analysis (Code name: DGPILE-3D). The numerical analyses are conducted with a full system in which a superstructure,
a pile foundation and surrounding ground are considered together so that interaction between pile foundation and soils can
be properly simulated because the nonlinearities of both the pile and the ground are described with suitable constitutive
models. Different types of piles, vertical pile or inclined pile, are considered in order to verify the different characteristics
of a group pile foundation with inclined piles. The validity of the calculation is verified by the model tests. 相似文献
43.
Masami Kudo Evgueni Jak Peter Hayes Katsunori Yamaguchi Yoichi Takeda 《Metallurgical and Materials Transactions B》2000,31(1):15-24
Experiments have been carried out to determine the equilibria between FeO
x
-CaO-SiO2 slag and lead metal in iron crucibles at temperatures ranging from 1473 to 1573 K. It has been found that the highest lead
solubilities are observed in the silica-saturated iron silicate slags, while the lowest solubilities are observed in the CaO-saturated
calcium ferrite slags. The activity coefficient of PbO varies from 0.15 to 3, depending on the slag composition. Changes in
temperature do not have a significant impact on the activity coefficient. The activity of FeO and pct Fe3+/pct Fe2+ ratios have been determined as a function of slag composition. These new experimental data have been incorporated into an
optimized thermodynamic slag model using the computer package FACT. 相似文献
44.
45.
Katsunori Inoue 《Materials at High Temperatures》2013,30(1):21-26
The theoretical equation for the laser flash method is derived where the penetration and transmission of the input energy into the test piece is taken into account. The thermal diffusivity of penetrative materials and its measurement errors are calculated instantly by fitting the experimental data to this equation by using the method of least squares with an on-line personal computer connected to the laser flash device. The usefulness of this method is shown by comparing it with the conventional method. 相似文献
46.
Katsunori Yokoshima Takuyoshi Shibutani Masashi Hirota Wataru Sugimoto Yasushi Murakami Yoshio Takasu 《Journal of power sources》2006,160(2):1480-1486
Rutile-type Ru1−xVxO2 nanoparticles possessing high surface area were prepared by a polymerizable-complex method and its electrochemical supercapacitor behavior was studied. X-ray diffractometry, energy-dispersive X-ray analysis, and N2 adsorption/desorption measurements were used to characterize the structure of the products. The electrochemical supercapacitor behavior of thick and thin films was studied by cyclic voltammetry in various acidic, neutral, and alkaline electrolytes. Ru1−xVxO2 exhibited extremely enhanced supercapacitive properties compared to pure RuO2. The highest surface redox activity was achieved with an acidic electrolyte. Ru1−xVxO2 showed negligible surface redox activity in neutral electrolytes. 相似文献
47.
48.
Dipak?G.?SharmaEmail author Rahadian?Yusuf Ivan?Tanev Katsunori?Shimohara 《Artificial Life and Robotics》2016,21(2):188-194
Human motion has already deeply affected many aspects of psychological and social research. On the other hand, because of the huge challenges and new dimensions of its increasingly extreme applications, this field remains an inspiring area in which to explore rich possibilities in the fields of artificial intelligence and bio-informatics. In this research, we investigated a novel approach to identify individuals based on their gaits. Furthermore, we investigated a new avenue of the research toward the biometric identification of humans that involves the classification of human gait using the power of genetic programming (GP). Moreover, we also propose an approach that applies collaborative filter using multiple evolved classifiers to address the challenges of non-determinism and insufficient generality of GP. 相似文献
49.
50.
为研究多孔隙岩石的变形特性,提出一个适用于多孔隙岩石的非线形流变模型(本构方程).本模型是由弹簧与阻尼器串连组成,弹簧部分采用作者曾经提出的本构方程;代表黏性部分的阻尼器设定加载前黏度很小,随着荷载的增加而逐渐加大.在低应力水平下的蠕变试验中,由于弹性系数没有明显的下降,因而设定阻尼器的应变与蠕变应变相同.为验证模型的准确性,对泥质砂岩、大谷凝灰岩、田下凝灰岩与河津凝灰岩4类岩石分别进行理论计算与试验测试.对于各类岩石,计算得到的应力-应变曲线与实测曲线基本一致,而且用此流变模型,发现气干与湿润状态下杨氏模量具有明显的差异.研究结果表明,在这2种状态下,杨氏模量的差异是由于非弹性应变(即阻尼器的应变)不同而引起的.在湿润状态下,阻尼器的应变增加越大,杨氏模量则变得越小.即使在较低的应力条件下,阻尼器的应变比以往研究中所认为的应变要大很多. 相似文献