We developed a home-related subjective well-being scale and evaluated its reliability and validity. The main findings are as follows:
1. A home-related subjective well-being scale consisting of 15 items was developed, structured into three factors: home satisfaction, emotions at home, and eudaimonia derived from home.
2. Using data collected from 2,000 residents in the Kanto region, we confirmed that the scale demonstrates sufficient reliability and validity.
3. The scale enables the identification of residential environmental characteristics that contribute to residents’ well-being.
This study utilizes CFD models to assess the indoor thermal environment and energy loads of grocery stores of varying sizes. The models simulate indoor conditions under typical summer and winter climates, examining how changes to air conditioning settings and ventilation rates affect energy consumption and thermal comfort. The study also investigates the effects of ceiling height and the presence of a windbreak room. Results indicate that larger stores are less influenced by outdoor air infiltration, whereas smaller stores exhibit significant vertical temperature variations. Additionally, ceiling height and the presence of a windbreak room further impact indoor temperatures and cooling loads.
This study investigated the effects of daylight introduction and supplementary lighting on the growth of indoor plants, focusing on woody species (Quercus myrsinifolia, Cinnamomum camphora) and Epipremnum aureum in workplace environments. E. aureum maintained growth under office lighting (600–700 lx), showing acclimation (e.g., reduced SPAD values) to mitigate photoinhibition under daylight. Woody species exhibited acclimation, such as decreased chlorophyll a/b ratios and increased leaf weight ratios under general and supplementary lighting (~1600 lx), enhancing photosynthetic efficiency. However, growth was hindered by office-specific factors, with neither lighting condition significantly improving woody plant growth, highlighting the need for tailored management strategies.
Dynamic characteristics of elastic and rigid circular plates subjected to vertical excitation were considered based on experimental mechanics. Free vibration tests were carried out to obtain coupled natural frequencies for two kinds of plates. Each floating model was vertically excited based on the results of free vibration experiments. The vertical acceleration responses and hydrodynamic pressure distribution were measured. The effects of plate flexibility and anchor stiffness on the dynamic characteristics are investigated though comparative study of flexible and rigid plates. The results will also be used to investigate the dynamic property of floating fishing ports proposed by the authors.