It is important to prevent hypertension, which is a risk factor for cardiovascular disease and severe COVID-19. In addition, as more people work from home, it is desirable to improve intellectual productivity at home. Therefore, in this study, we clarify the effects of the thermal insulation performance of houses on physiological responses and productivity in remote workers. We obtained the following findings. (1) When insulation performance was higher, systolic blood pressure was lower, and the skin temperature and the blood flow rate of the feet were higher; (2) As insulation performance increased, productivity increased.
In recent years, much attention has been focused on the psychological and visual effects of windows, such as view. The aim of this research is to make a new method for quantitatively evaluating the view. As a first step, we consider the view of windows with blinds. In this study, an image processing algorithm that reproduces human visual processing, especially amodal completion, was constructed to evaluate the view. The results of the subject experiments conducted in a scale model and a real space showed that the view clarity could be well estimated by the algorithm proposed in the research.
In this study, we have been studying countermeasures on heavy-weight floor impact sound for small-scale nursery schools. In this paper, we conducted an experimental study on heavy-weight floor impact sound for storage furniture with tatami on floating floor system. As a result, the specimen using the storage furniture with tatami proposed in this study can take measures against the heavy-weight floor impact sound of 15 dB or more in the 63 Hz band even on a floating floor system if proper vibration isolation and sound insulation are performed.
We conducted impression evaluations in an environment where the illuminance changed monotonically. Based on the correlation coefficients, we clarified that the following evaluation items were required for expressing the impression of a lighting environment that fluctuates over time: perception of quantitative changes, discomfort toward temporal fluctuations, difficulty of working during fluctuations, darkness of the desktop immediately after end of fluctuations, and glare of desktop immediately after the end of fluctuations. The degree to which the physical quantity was affected differed depending on the evaluation item. Thus, the relationship was regressed using a logistic function, and the contour figure is shown.
In this study, we devised a model that generalizes the strong vertical temperature gradient that is characteristic of grocery stores, using the results of CFD analysis. Using the display case load / power consumption prediction model shown in the previous report, we devised a method to calculate energy consumption in consideration of the balance between cooling load, building load, and air conditioning load.
Areas were divided according to the presence or absence of display cases in the store, calculations were performed for each area, and the validity was confirmed as a result of comparison with the measured values.
In this study, following the procedure of the perceptive air quality test described in ISO 16000-28 and ISO 16000-30, we numerically analyzed the odorant transportation from the odorant generator to human breathing zone using acetone which is considered as a standard substance for pi-scale evaluation. For the evaluation of access to olfactory receptors under a transient breathing cycle, the acetone adsorption flux to the olfactory epithelial cells was calculated by using computer simulated person (CSP) with numerical respiratory tract model and physiologically based pharmacokinetic (PBPK) model.