Application of simulated annealing to focal mechanism determination

Simulated annealing (SA) is known as one of the efficient methods for global optimization. It allows for getting an optimal solution by jumping out of local minimum. In this paper, we apply the simulated annealing to determination of focal mechanism solution. To investigate the feasibility of the application, we determine focal mechanism solution of the 14 March 2014 Iyo-Nada intermediatedepth earthquake. The computation of SA method is then 1278 times faster than that of the grid search method

Perspectives of Music and Sports for Satisfactory Anti-Aging Daily Life

Aging societies have been observed in Japan and other developed countries worldwide. In the light of anti-aging medicine, authors have continued several approaches such as Integrative Medicine (IM), music therapy, art therapy, frailty, rehabilitation, sports medicine and masters’ athletics. For successful aging, three important factors are necessary, which are i) no illness or disability, to maintain physical/cognitive function, to continue social participation and contribution. Music has large power similar to language and communication and clinical effects physically, psychologically and socially. Various plays of the activities for elderly such as music and sports can bring processes towards achieving successful aging

Development of Health Literacy from Activities of Culture, Leisure, and Sports

Living in a healthy and independent manner would be beneficial for people. Health literacy can be obtained through activities of culture, leisure, and sports. Authors have been involved in sports medicine, music, and management of International Masters Athletics Federation（IMAF）. Health literacy would be a dynamic multi-dimensional perspective that combines various kinds of health-related matter, information, and activity. It can be developed through the activities of sports and music. These opportunities are divided into scheduled care healthcare programs and unexpected human interaction with various participants together. The latter would be a synergistic effect in multi-dimensional aspects

Electronic Properties of BaPtP with a Noncentrosymmetric Cubic Crystal Structure

We report the synthesis, electronic properties, and electronic structure of LaIrSi-type BaPtP with a noncentrosymmetric cubic crystal structure. Electrical resistivity and heat capacity data taken by using polycrystalline samples indicated that BaPtP is a metal, which was further supported by first principles calculations. A polycrystalline sample of BaPtP showed a zero resistivity below 0.2 K due to the superconducting transition. The first principles calculation results indicated that the spin splitting at around the Fermi energy is large in BaPtP. These results suggest that BaPtP is likely to exhibit interesting physical properties caused by a strong spin-orbit coupling of 5d electrons in the Pt atoms.Comment: 4 pages, 4 figures, JPS Conf. Proc., accepte

Global SH-wave propagation in a 2D whole Moon model using the parallel hybrid PSM/FDM method

International audienceWe present numerical modeling of SH-wave propagation for the recently proposed whole Moon model and try to improve our understanding of lunar seismic wave propagation. We use a hybrid PSM/FDM method on staggered grids to solve the wave equations and implement the calculation on a parallel PC cluster to improve the computing efficiency. Features of global SH-wave propagation are firstly discussed for a 100-km shallow and 900-km deep moonquakes, respectively. Effects of frequency range and lateral variation of crust thickness are then investigated with various models. Our synthetic waveforms are finally compared with observed Apollo data to show the features of wave propagation that were produced by our model and those not reproduced by our models. Our numerical modeling show that the low-velocity upper crust plays significant role in the development of reverberating wave trains. Increasing frequency enhances the strength and duration of the reverberations. Surface multiples dominate wavefields for shallow event. Core-mantle reflections can be clearly identified for deep event at low frequency. The layered whole Moon model and the low-velocity upper crust produce the reverberating wave trains following each phases consistent with observation. However, more realistic Moon model should be considered in order to explain the strong and slow decay scattering between various phases shown on observation data

DIURNAL CHANGE OF PAHS AND NITRO-PAHS IN THE ATMOSPHERIC PARTICULATE MATTER AT THE ROADSIDE IN HO CHI MINH CITY, VIETNAM

Joint Research on Environmental Science and Technology for the Eart

Microtremor exploration in Tsushima Campus, Okayama University

　In this report, microtremor array observations were conducted in the Tsushima Campus of Okayama University, and the subsurface velocity structure was estimated from the analysis of the records. The results indicate that a five-layer S-wave velocity structure from the surface to the seismic basement equivalent layer with thicknesses of 8, 24, 80 and 180 m and velocities of 150, 450, 1100, 1700 and 3200 m/s, respectively, is reasonable. This model explains to some extent the observed phase velocity and H/V spectral ratios. It is also consistent with the surface borehole results. Furthermore, the areal characteristics of the H/V spectral ratios were also presented, allowing us to estimate the trend of the ground structure in shallow areas