For the purpose of custom-made garment design, the 3D-body curved surface shapes of 1,348 females in an extensive age group were investigated using the angle values of three curvatures (Kc, kc, and Hc) by multivariate analysis. The nine 3D shape types (three types in the 30s and 40s age groups, two types in the 50s age group, and one type of the 60s age group) were categorized by using each sum angle value of the elliptical (+Kc), the hyperbolic (–Kc), the convex (+Hc), and the concave (–Hc) curved shapes in ten areas. The different features of the 3D shape types mainly displayed higher or lower convex elliptical and concave hyperbolic curved shapes in the neck, shoulder, chest, sides of trunk, and arms areas. Age also factored into the 3D shape types, and was particularly notable in the differences between the higher convex elliptical curved shape of the 50s and 60s age groups and the lower convex elliptical curved shape of the 30s and 40s age groups in the abdomen, buttocks, and legs areas. Several 3D-body shape types were extracted in the concrete body forms and angle curvature values and were provided as useful information for numerically developing visual designs in custom-made garments.

The performance of an electronic product depends on how efficiently it can dissipate the heat of its parts. As a result, intensive ongoing research seeks to improve the thermal conductivity of polymeric materials. In this study we investigated alumina nanofibers as thermal conductive filler in resin and compare them to conventional spherical filler. Aligned α-alumina nanofiber mats were fabricated by electrospinning PVA and boehmite dispersion; they were then impregnated with resins to obtain a composite sheet. We assessed the thermal conductivities of the sheet. Resin sheets with alumina nanofiber content (33 vol.%) had high thermal conductivity (19.7 W/mK) in the direction parallel to the aligned alumina nanofibers. Conductivity increased in proportion to alumina nanofiber content. In addition, the alumina nanofiber composite sheet showed anisotropic thermal conductivity derived from the fiber direction, and had electrical insulating property (2.7×10¹³ Ω/□) and flexibility. This electrically insulating sheet with anisotropy in thermal conductivity would be useful in designing effective heat-removal paths in electronic devices.