Coarse-grained model for spring friction study of micron-scale iron by smoothed particle hydrodynamics

The paper constructs a coarse-grained model to investigate dry sliding friction of the body-centered-cubic Fe micron-scale system by smoothed particle hydrodynamics simulations and examines influences of the spring force on the characters of friction. The N_atom = 864 \times 10^12 atoms Fe system is coarse-grained into the two different simple-cubic particle systems, one of 432000 and the other of 16000 particles. From the detection of stick-slip motion, friction coefficient, dependence of friction coefficient on isotropy or anisotropy of the spring force and externally applied normal load, we find that the coarse-grained model is a reasonable modeling process for study of friction of the Fe system and the anisotropic behavior presents better friction of the system than the isotropic one

Quality of Early Childhood Education and Care and Child Development Evaluation Research in Higashi-hiroshima.: A report of 2021

In this study, we clarified how the quality of childcare at preschool childcare facilities (kindergartens, nursery schools, certified children’s kindergartens ) in the city is affected by the implementation status of the “Higashi-Hiroshima City Early Childhood Education and Childcare Action Plan.” The Action Plan includes, (1) the creation of an attractive childcare environment that nurtures the five abilities, (2) the promotion of natural childcare, (3) the enhancement of public childcare, and (4) the training and collaboration of childcare coordinators. Specifically, first, we clarified how teachers played a role in the growth of children from 0 years to preschool age through the implementation of the Higashi-Hiroshima City Early Childhood Education and Childcare Action Plan; second, we also evaluated parental childcare