An investigation based on questionnaire was conducted to clarify the capability, reliability and availability of the people and equipment for the mitigation of fire damage to small-scale wooden temples and Shinto-shrines registered as cultural properties in Nara Prefecture. It has revealed significant aging of the managers and weak financial basis of the small-scale temples and Shinto-shrines, making it extremely difficult to detect and extinguish a fire in its early stages or protect the cultural properties from ignition by adjacent fires. The possibility of reducing such weakness and fire detection / extinguishing without relying solely on the managers is discussed.

In this experiment, the correlations between foot sole thermal comfort, foot sole thermal sensation and foot sole physiological parameter were investigated. Foot sole thermal comfort was related to foot sole temperature.

This study suggested that the neutral temperature of the male sole in winter was about 30°C. The change in contact comfort was least unpleasant when the sole temperature immediately before contact is above 30°C, the sole contact heat flow rate is about -300 W/m2, and the sole temperature is about 31°C.

The effect on the sole was not clarified by whether the material was PCM or not.

Improving motivation to learn and promoting mental health among university students are important issues. Furthermore, it is expected that university campus will be transformed into a “co-creation” hub and how the campus should be designed for the new form of education and research in the post-pandemic society is under consideration. In this study, a questionnaire survey was conducted to clarify the relationship between motivation to learn & mental health and the architectural environment. The effects of each environmental element on motivation to learn and mental health differed, and differences were also found in the effects of different work content.

This study aimed to assess the psychological effects of view on residents’ subjective well-being and compare the effects by housing type, detached and apartment. For subjective well-being, there was a correlation between positive emotion and eudaimonia, and no correlation between these two and negative emotion. The psychological impact of the view and selected determinants on well-being differed among housing types because of their different surrounding environment. Detached houses were influenced by the near view, while apartment buildings were affected by the far view. Additionally it was found that not all window views enhancing comprehensive evaluation necessarily increase subjective well-being.

In this study, a field survey was conducted to investigate thermal comfort differences between office A aiming for a uniform environment and office B with environmental selectivity. As a result, a negative correlation was confirmed between unacceptability and thermal environment satisfaction (r = 0.42) in office A, but a positive correlation was confirmed between pleasantness and thermal environment satisfaction (r = 0.29) in office B. Therefore, it was shown that while it’s important not to feel unacceptability in offices aiming for a uniform environment, the feeling of pleasantness, rather than the occurrence of unacceptability itself, improves thermal environment satisfaction in offices with environmental selectivity.

This paper aims to propose an excitation force model for multiple people jumping up and down that considers timing offset. Initially, we conduct a measurement of the excitation force waveform of the jumping up and down movements of three subjects using a force plate. Next, we analyze various parameters, starting with the timing offset for each jump. Finally, we analytically examine the impact on the relationship between the number of people jumping and the excitation force, and propose an excitation force model for multiple people jumping up and down that can reproduce previous results and takes into account timing offset.

This paper quantifies the impact of six elements used in calculating the Predicted Mean Vote (PMV) - air temperature, relative humidity, mean radiant temperature, air velocity, clothing insulation, and metabolic rate. We utilized Partial Dependence Plot, a technique in Explainable Artificial Intelligence, for quantification. The results are as follows: Air temperature has the most significant influence on PMV, followed by mean radiant temperature, clothing insulation, and metabolic rate. Relative humidity has almost no effect, and air velocity impacts the sensation of heat only within a limited range.

These findings suggest the potential of machine learning to explain environmental indicators.

In this study, we developed a plant air purification system. We evaluated the performance and effectiveness of the system. The results are as follows.

1. The air permeability coefficient of the mixed medium was approximately 6.3 and 1.4 times higher than that of Akadama Soil and Seramis.

2. The removal rates of formaldehyde under soil aeration conditions were 3.8 times higher than those under non-aeration conditions.

3. The removal rates of formaldehyde in the underground part were 2.8 times higher than those in the aboveground part, and accounting for approximately 73% of the total system.

The purpose of this study is to propose a calculation method for estimating the carrying performance of water-saving toilets installed in commercial buildings, in order to contribute to the design of drainage pipes taking into account the carrying performance. The carrying performance when a large-diameter pipe is installed in water-saving toilets has been determined by actual measurements. However, actual measurements have limitations in adapting to various pipe configurations. Therefore, in this paper, we estimate the carrying performance of straight pipes by calculating the effects of variations in flushing water volume, pipe diameter, and gradient, and evaluate their effectiveness.

Sasga & Co. designed the heating system of the Meiji Imperial Palace. The blueprints of the heating system of the Ministry of Justice (Shihosho) also has the stamp of the Sasga & Co.. Despite its involvement in two of the national architectures in the Meiji era, details of the Sasga & Co.’s activities are not well known. This study collects documents related to the Sasga & Co. and identify its activities. They are also compared to those of Takata & Co., which monopolized the heating equipment business in the latter half of the Meiji era.