Proceedings of Symposium on Human-Environment System
Online ISSN : 2434-8007
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Showing 1-46 articles out of 46 articles from the selected issue
  • Pages Cover1-
    Published: 2020
    Released: April 23, 2021
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  • Pages App1-
    Published: 2020
    Released: April 23, 2021
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  • Pages App2-
    Published: 2020
    Released: April 23, 2021
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  • Pages App3-
    Published: 2020
    Released: April 23, 2021
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  • Pages App4-App11
    Published: 2020
    Released: April 23, 2021
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  • Quantitative Study Based on Measurement and Numerical Analysis
    Satoru TAKADA, Kosuke KURIKI, YUAN Lu
    Pages 1-4
    Published: 2020
    Released: April 23, 2021
    CONFERENCE PROCEEDINGS FREE ACCESS
    Dehumidifiers are often used in stack rooms to keep books in good condition. In stack rooms, ventilation with the outdoor air occurs, which may affect the temperature and humidity of the stack rooms and the load of the dehumidifier. In this study, the temperature and humidity measurements of a stack room in a university library where dehumidifiers were always in operation showed that a high humidity condition can be reduced by decreasing the inflow of outdoor air. In addition, a numerical analysis of the temperature and humidity in the stack rooms considering the hygrothermal capacity of the walls and books was conducted. It was shown that the temperature and humidity of the stack room can be reproduced by the model proposed in this paper, and the effects of outdoor air inflow and dehumidifier operation was quantified by the model. The results showed that the same level of humidity can be achieved with a smaller amount of dehumidifier operation by decreasing the inflow of outdoor air in the case of the examined stack room.
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  • -Verification of Measurement Accuracy Using Self-Made Equipment-
    Ryota IMAI, Teruaki MITAMURA
    Pages 5-8
    Published: 2020
    Released: April 23, 2021
    CONFERENCE PROCEEDINGS FREE ACCESS
    In recent years, while the commercialization of interior materials with a humidity control performance has been advanced, the conventional method for evaluating humidity control performance generally depends on the weight change of the test piece, and it could not be an evaluation method assuming application to an actual space. In this study, we focus on the principle of the ventilation capsule used in sweating systems and develop a method for directly measuring moisture absorption and desorption of building materials in the actual environment. In this paper, we develop a device based on the principle of the modified sweating meter and examined the diameter of the ventilation capsule used for the device and the ventilation rate in the capsule. The weight change of the moisture absorbing and desorbing materials installed in the experimental chamber was regarded as a true value, and the accuracy in each condition was obtained by comparing it with the moisture absorbing and desorbing measured by the self-made equipment. As results, the optimum ventilations rate for capsule diameter was calculated to be 23.0 1/min for capsule diameter of 50 mm and 13.4 1/min for a capsule diameter of 100 mm.
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  • Aika Suzuri, Satoru TAKADA
    Pages 9-12
    Published: 2020
    Released: April 23, 2021
    CONFERENCE PROCEEDINGS FREE ACCESS
    For the purpose of clarifying the transient response of internal moisture transfer and deformation of skin to low humidity exposure, the response of water content distribution and stratum corneum thickness to temperature and humidity change was analyzed by the skin swelling and shrinking model. Compared with the water content distribution measured by a confocal Raman spectrometer, the distribution shape of water content coincided for the depth range of 0 to 20m. When the humidity was changed from medium to low and from low to high, the behavior of the water content distribution almost agreed for the depth range of 0 to 10m. In addition, according to the analysis, the humidity change influenced the water content of the deep part of the stratum corneum in both low and high humidity, and the effect was greater in the high humidity condition. On the other hand, the steep decrease/increase in the water content measured by a skin moisture meter at the start/end of the low humidity exposure was reproduced by the model.
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  • A study based on transient heat conduction model of the eyeball considering blinking
    Kanoko ITO, Satoru TAKADA
    Pages 13-16
    Published: 2020
    Released: April 23, 2021
    CONFERENCE PROCEEDINGS FREE ACCESS
    When determining the tear evaporation rate from measured ocular surface temperature, it is necessary to estimate the temperature distribution inside the eyeball properly. Tan et al. have proposed a method assuming that the temperature field inside the eyeball is steady, and ignoring the heat capacity of the eye and the warming effect of blinking. In order to examine the validity of the assumption, we calculated the temperature distribution inside the eyeball and the tear evaporation rate using the transient heat conduction model of the eyeball considering blinking to compare with the tear evaporation rate estimated under the assumption of steady state. As a result, we revealed that the assumption caused a non-negligible error; it underestimated the evaporation rate and could not reproduce its decreasing tendency after blinking. However, it was suggested that the time-average evaporation rate could be estimated without unsteady-state analysis by considering the influence of the blinking properly.
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  • Kako Futaoka, Shinji Yoshida
    Pages 17-20
    Published: 2020
    Released: April 23, 2021
    CONFERENCE PROCEEDINGS FREE ACCESS
    Recently, retroreflective materials have attracted attention as one of effective countermeasures against urban heat island phenomena. However, it has been pointed out that increase of the incident angle to the surface weakens the retroreflective performance of these materials along with growing the specularity. In order to improve the summer heat environment of the city block, it is necessary to recurse much of the solar radiation even during the time when the sun is high. The purpose of this research is to evaluate the effect of layout of retro-reflective materials on solar radiant reflection characteristics of city block by a model experiment. We carried out comparison of the distributions of both incident and reflected energy between combinations of installing materials to both the exterior building wall and the ground surfaces in each case by using the model experiments. From the investigation, it was found that installing the RR materials to the building and the ground surfaces improved the solar radiant reflection performance of the city block, and also strengthened the directivity of the reflection
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  • Yayoi Satsumoto, Sachie Oya
    Pages 21-24
    Published: 2020
    Released: April 23, 2021
    CONFERENCE PROCEEDINGS FREE ACCESS
    To prevent heat stroke and to improve the thermal comfort in wearing yukata, the suction type fan was installed in the Obi sach while maintaining the traditional construction of the Yukata. To evaluate the effect of the fan, the experiment were done with and without fan. The absolute humidity of the “without fans” was humid at the abdomen and the lower back and low at the upper arm and middle humid at the chest and a back. The absolute humidity of the “with fans” was lower than one of “without fans” at the chest, the back, the abdomen and the lower back. It was found that when the suction fan was attached in the obi sash, absolute humidity and heart rate decline significantly. The thermal, damp, wet, sticky, stuffy and comfort sensations were improved with fans at all.
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  • Thermal environment and questionnaire survey at construction in summer
    Ryo Yamada, Shunsuke Someya, Hayato Ino, Keita Yamasaki, Taito Takahas ...
    Pages 25-28
    Published: 2020
    Released: April 23, 2021
    CONFERENCE PROCEEDINGS FREE ACCESS
    Questionnaire survey with construction workers were conducted for two purpose: to clarify the actual situation of wearing a ventilated working jacket (VWJ) and the psychological response to wearing a VWJ, and to understand the influence of the mask. The results of the survey showed that more than 90% of the workers wore VWJ and masks. In the subjective evaluations, the results showed that the workers were feeling heat stress compared with the results of past field measurements, which may be influenced by the mask. As a result of the clothing survey, long-sleeved VWJ and short-sleeved undershirt are mostly used, but there is no bias in the materials.
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  • Mami SAKAMOTO, Hiroko KUBO, Manabu SHIBASAKI
    Pages 29-32
    Published: 2020
    Released: April 23, 2021
    CONFERENCE PROCEEDINGS FREE ACCESS
    Measures against heat stroke are an important issue for both athletes and non-athletes in the hot and humid stadium in the middle of summer. Therefore, in order to clarify the awareness of and countermeasures for heat stroke, we conducted a questionnaire survey in college students with different exercise habits regarding heat stroke countermeasures implemented in the previous summer. Based on the results, there was a significant difference in measures against heat stroke associated with differences in exercise habits. Those who exercised regularly often implemented measures in response to a rise in body temperature, such as increased body temperature, water loss, and the use of air conditioners. On the other hand, it was clarified that those who did not exercise regularly tended to avoid the causes of increased body temperature, such as avoiding hightemperature environments and excessive exercise. Therefore, it was suggested that the measures implemented tend to differ depending on the presence or absence of exercise habits.
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  • Chiaki Kido, Hiroko Kubo, Michiyo Azuma, Naomi Sasa, Satoko Hoshino, N ...
    Pages 33-36
    Published: 2020
    Released: April 23, 2021
    CONFERENCE PROCEEDINGS FREE ACCESS
    This study aimed to clarify the impact of physical function, physical activity, and sleep on health-related quality of life (HRQOL), and examined its association with activities in daily life among healthy older adults. Our result showed positive associations between the frequency of going out and number of steps or exercise and daily activities, including housework and total body movement. In addition, the number of steps and exercise were related to physical fitness measurements, such as walking speed and lower extremity muscle strength. Correlation analysis revealed that the HRQOL physical health index was associated with physical function and exercise quantity. On the other hand, the HRQOL psychological health index was related to self-reported sleep quality and physical activity. These findings suggest that increased physical function, physical activity, and sleep contribute to improving HRQOL. Furthermore, daily activities, including housework and going out, are essential for improving physical function and physical activity.
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  • ―Development of the thermal sensation model considering step change of air temperature
    Xiaoyang Wang, Naoshi Kakitsuba
    Pages 37-38
    Published: 2020
    Released: April 23, 2021
    CONFERENCE PROCEEDINGS FREE ACCESS
    The purpose of this study is to develop a prediction model of thermal sensation considering step change in air temperature.In the present study, six or eight young male subjects were first exposed to 28 oC/60% in the sub chamber, and then moved to the main chamber where air temperature was controlled at 21oC/60% and 35oC/60% on each occasion. Tympanic temperature and skin temperature at 7 sites were recorded continuously, and thermal sensation and thermal comfort votes were recorded periodically. The results were then compared with the predicted values of the prediction models by other scientists, and found that prediction from existing thermal sensation models did not agree with the experimental results.
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  • ~Construction of a trained model for posture discrimination~
    Ryusuke Kobayashi, Yoshiaki Yamato, Sonki Son, Ryushi Kimura
    Pages 39-42
    Published: 2020
    Released: April 23, 2021
    CONFERENCE PROCEEDINGS FREE ACCESS
    Development of a system that enables non-contact and real-time estimation of Metabolic rate from thermal images by combining infrared cameras, which are increasingly installed in commercial air conditioners, and image recognition technology based on Deep learning, which is being introduced in various fields. Is under consideration. This study constructed a learning model that determines the posture of a person from thermal images, which is the basis of the system.
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  • Ayaka Nishino, Ineko Tanaka, Kyoji Yamada
    Pages 43-46
    Published: 2020
    Released: April 23, 2021
    CONFERENCE PROCEEDINGS FREE ACCESS
    In recent years, the number of domestic fatal accidents among the elderly has increased, mostly due to drowning caused by heat shock. In order to reduce the risk of heat shock, it is important to improve indoor thermal environment where the elderly live in. One of the ways to improve the thermal environment of a house is to increase the insulation performance of the house envelope. However, due to the high cost and the low recognition of the thermal insulation effect, insulation retrofit have not been very widespread. This study focuses on changing the floor plan which has possibility to be chosen by the elderly for house renovation. In addition, the possibility to improve the thermal environment by changing the floor plan was investigated by modeling actual houses and using thermal environment simulation for the model. The results show that the room temperature in the dressing room of model 1 and model 2 increased by 1.7K and 1.1K, respectively, around bathing time. The new index was developed to indicate the heat shock risk. A possible reduction in heat shock risk was suggested when moving between living and non-living spaces.
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  • Part2 Detailed analysis by unit model
    Ryo FUJIMOTO, Shizuo IWAMOTO, Ayano DEMPOYA
    Pages 47-50
    Published: 2020
    Released: April 23, 2021
    CONFERENCE PROCEEDINGS FREE ACCESS
    For the purpose of evaluating the indoor thermal environment of the lecture room, a large-scale lecture room is modeled as a unit, and ceiling blowout, radiant panel, floor blowout, etc. are set as the air conditioning system, and CFD analysis is performed to perform detailed indoor thermal environment evaluation. Was done. In addition, assuming that the class format in the lecture room will change in the future due to the influence of the new coronavirus that is spreading these days, we examined the seating situation in consideration of social distance. As a result, it was found that the seating condition was 1/4 of the normal seating condition, and the sensible heat load in the room was halved due to the rise in the air temperature when a comfortable thermal environment was created.
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  • Part2 CAV System Simulation
    Tatsuki KAJITANI , Shizuo IWAMOTO, Ayano DEMPOYA, Shigeki KOYASU
    Pages 51-54
    Published: 2020
    Released: April 23, 2021
    CONFERENCE PROCEEDINGS FREE ACCESS
    The thermal load of the air conditioning in the house and the indoor environment are predicted by simulation. The VAV method by the whole housing air conditioning is compared with the partial intermittent operation by the domestic air conditioner. In particular, the annual frequency distribution of the room air temperature in the rooms and corridors is evaluated. Following the previous report, we will build a simulation of the CAV system for air conditioning in the entire building and try to evaluate it using the frequency distribution of the room temperature in the living room.
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  • ayaka Shimogai, Yoshiaki Yamato
    Pages 55-58
    Published: 2020
    Released: April 23, 2021
    CONFERENCE PROCEEDINGS FREE ACCESS
    Clo value is essential to assess the thermal environment. In this report, in order to make it possible to measure the clo value in various postures, it is studied the measurement method using by the human body. In a former investigation, it was shown that a clo value of the “constant temperature control” was different from a “constant heat flow control” in the measurement with the thermal mannequin. Human body reaction is similar to “constant heat flow control”-type thermal mannequin. In order to improve the clo value measurement method using the human body, clo value of clothing by thermal mannequin which changed their control methods were measured and relational expressions of thermal insulation of clothes measured by different control methods were shown. In this study, the thermal mannequin of the clothes for the woman which brought the surface temperature and heat flow from the skin close to the human body showed that clo value were different for each control method
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  • Yuika KAWAGISHI, Satoru TAKADA
    Pages 59-62
    Published: 2020
    Released: April 23, 2021
    CONFERENCE PROCEEDINGS FREE ACCESS
    To clarify the conditions under which human feels uncomfortable due to humidity indoors in summer, discomfort sensation was surveyed in a residential house. Experiments were conducted to expose a subject to multiple relative humidity conditions in the temperature range of 28-31℃ in an artificial climate chamber. In these experiments, the subject declared sensations based on thermal, comfort, dry-wet, humid, muggy, and sticky scales. Discomfort sensations did not necessarily correlate with thermal sensation, and it was declared even in a thermally neutral environment. Discomfort sensation tended to correlate with humid and muggy sensations. It was found that specific discomfort sensation that did not depend on heat could occur under high humidity conditions in the range of 28-29℃
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  • Nao Tsumaki, Mizuki Nakajima, Kenichi Egawa, Takeshi Sato
    Pages 63-64
    Published: 2020
    Released: April 23, 2021
    CONFERENCE PROCEEDINGS FREE ACCESS
    Sleep disorders are a major social problem that prevails in modern society, and urgent action is desired. Currently, many supplements that are supposed to improve the sleeping environment are on the market. However, the effect is extremely weak compared to the prescription. It is well-known fact that conventional sleep studies have observed a decrease in core body temperature from the time of falling asleep, but it has been verified that the core body temperature from the time of falling asleep is actively raised by ingesting ice slurry to lead to falling asleep. In this study, 11 people, mainly university students, ingested ice slurry before falling asleep, and examined whether the quality of sleep was improved by the ratio of non-REM sleep time due to the decrease in core body temperature. We recorded the situation in which the quality such as temperature and humidity and sleep time was comprehensively evaluated in each sleep environment of the subjects. Comparing the presence or absence of ice slurry before falling asleep, there was a tendency that the deep sleep time was longer when ingested. Therefore, it was suggested that the decrease in core body temperature due to ice slurry improves the quality of sleep.
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  • Kohei Oba, Masashi Yoshida
    Pages 65-66
    Published: 2020
    Released: April 23, 2021
    CONFERENCE PROCEEDINGS FREE ACCESS
    In recent years, interest in the indoor thermal environment has increased with the introduction of air conditioning systems in schools. A school is a space where many people live, and students and teachers need to be able to spend time in an appropriate environment. Our school centrally manages the air conditioning system in accordance with the standards set by the Ministry of Education, Culture, Sports, Science and Technology. The air conditioning management in the school also plays a role in reducing power consumption. However, our school building consists of two buildings, one in the northeast and one in the southwest. The number of classrooms exposed to sunlight at different times of the day and the airflow varies. In order for all teachers and students to live comfortably in the school, it is necessary to monitor and control the temperature and humidity in all classrooms. The purpose of this study is to analyze the trend of temperature and humidity changes in the classrooms by using the temperature and humidity data measured by the thermal environment monitoring system.
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  • Ryoga IMUTA, Megumi MITSUDA, Takashi IWAHASHI, Toshimi TANAMURA, Kok ...
    Pages 67-68
    Published: 2020
    Released: April 23, 2021
    CONFERENCE PROCEEDINGS FREE ACCESS
    A questionnaire survey on odors was conducted by e-mail for accommodation facilities. As a result, responses were obtained from 186 accommodation facilities. Approximately 90% of the respondents received odor complaints from guests. And approximately 80% of complaints were on room odors. The content of the odor complaint was caused by “Tobacco smoke odor,” “Perfume (Aroma odor)” and “Body odor (Sweat odor).”
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  • Sota FUJISE, Teruyuki SAITO
    Pages 69-72
    Published: 2020
    Released: April 23, 2021
    CONFERENCE PROCEEDINGS FREE ACCESS
    These days, some new libraries consider themselves as a place to stay not only as a place to borrow books. At these libraries, the reading place is being diverse so as users can stay for a long time. In the reading area of these libraries, we can see some users choosing a seat which is little away from other user who is already seated. In this study we conducted a field survey at the public library and investigated how the user’s choice of seat will change when other people are already seated.
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  • Yuriko Ohara, Ineko Tanaka
    Pages 73-74
    Published: 2020
    Released: April 23, 2021
    CONFERENCE PROCEEDINGS FREE ACCESS
    Japan ratified the United Nations Convention on the Rights of Persons with Disabilities in 2014, and Act for Eliminating Discrimination against Persons with Disabilities was enacted in 2016 to promote independence and social participation of persons with disabilities based on the principle of normalization. In order to create a society where everyone can live their lives the way they want to, we should provide a living environment where people with disabilities can safely go out and live their daily lives regardless of the type of disability or symptoms of the disease. In this study, we surveyed patients with neurological diseases, mainly Parkinson's disease, on their opinions and needs toward the current state of walking when they go out, and by structurally organizing their psychological burdens and latent needs for the subject's environment, we identified problems with the current outdoor walking space
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  • Mei Takiguchi, Nao Tsumaki, Yuriko Sugawara, Mizuki Nakazima, Takeshi ...
    Pages 75-76
    Published: 2020
    Released: April 23, 2021
    CONFERENCE PROCEEDINGS FREE ACCESS
    Due to the spread of the COVID-19 infection, most university students are forced to take online classes. In addition to about 90 minutes a day x 5 frames at the longest, lesson assignments will be handled by telework. However, it is hard to say that all university students are able to go telework in an appropriate environment. Prolonged VDT work in improper posture increases the frequency of ergonomic injuries and illnesses. In this study, we conducted an online questionnaire to 126 university students in their 20s to investigate whether an appropriate working environment was established. Compare and evaluate with the ideal working environment and report the current situation
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  • Kenta Katsuki, Kahori Genjo
    Pages 77-80
    Published: 2020
    Released: April 23, 2021
    CONFERENCE PROCEEDINGS FREE ACCESS
    The purpose of this study is to collect and analyze the statistical data on the property of the housing units with the loft space. Based on the LIFULL HOME'S data set, the distribution of houses with loft space in Japan and the number of housing units with the loft space are clarified in terms of the regional characteristics. The ratio of loft area in the occupied area by prefecture and the relationship between the loft area and the occupied area are described in this paper
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  • ―Examination based on the exhaust position of the 1 m3 chamber
    Saki KONDO, Megumi MITSUDA, Toshimi TANAMURA, Ryo TSUBOI
    Pages 81-82
    Published: 2020
    Released: April 23, 2021
    CONFERENCE PROCEEDINGS FREE ACCESS
    In this study, the diffusion behavior of odor substances was measured by semiconductor gas sensors using a 1 m3 chamber. An air supply port was provided at the lower part of the chamber, and the exhaust port was changed to four places. We investigated the diffusion behavior of odor substances due to the difference in the position of the exhaust port. In addition, a comparative study was conducted with the case where the air supply port was provided at the upper part of the chamber. The citrus fragrance D-Limonene was used as the odorant. Under the condition that the air supply port was installed at the bottom of the chamber, the concentration of odors substances in the chamber was the lowest when the exhaust port was installed at the bottom of the chamber. Compared with the condition where the air supply port was installed in the upper part of the chamber, the concentration inside the chamber was lower when the air supply port was installed in the lower part of the chamber
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  • Hiromi YAMADA, Yoshinori HONMA, Michiko BANDO
    Pages 83-84
    Published: 2020
    Released: April 23, 2021
    CONFERENCE PROCEEDINGS FREE ACCESS
    The number of private lodgings in Japan has been rapidly increasing as more vacationers choose to visit Japan. The purpose of our work was to investigate the state of hygiene of private lodgings. This study examined the distribution and temporal changes of concentrations of airborne mold and adhesive mold. As a result, concentrations of adhesive mold varied greatly depending on sites. The corners of the rooms showed higher levels of the concentration of adhesive mold compared to the other areas. The buildings where the owner lived in had lower hygiene levels than those where the owner did not live in.
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  • - Based on Field and Questionnaire Survey in the Yokohama City -
    Shinya TANEICHI, Ineko TANAKA, Keiko MATSUHASHI, Koki MIYAJIMA
    Pages 85-88
    Published: 2020
    Released: April 23, 2021
    CONFERENCE PROCEEDINGS FREE ACCESS
    In this report, we analyzed the results of a questionnaire and field survey in Yokohama City to understand the actual condition of ventilation in nursery schools during intermediate season. In addition, the influence of the awareness of the nursery teacher on indoor air environment was also discussed. Estimated ventilation volume in nursery rooms by environmental adjustment activities, the estimated ventilation volume in nursery rooms of Open-window ventilation type facilities was greater than the required ventilation volume. On the other hand, some nursery rooms in Mechanically and Combined use ventilation type facilities had inadequate ventilation volume, especially during naptime. Furthermore, this may be more severe during the summer and winter. There was a tendency for CO2 concentrations to be lower when window-opening rules were in place. These results suggest that in facilities with open window ventilation, it is possible to improve the indoor air environment through awareness and action on the part of the nursery teacher.
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  • Go Iwashita
    Pages 89-92
    Published: 2020
    Released: April 23, 2021
    CONFERENCE PROCEEDINGS FREE ACCESS
    Most schools had canceled classes between March and May in 2020 because of COVID-19. After restart of classes, the class size had reduced to half for maintaining social distance. The class size was returned to 100 % for a while. This study reports the CO2 concentrations in classrooms during the above period.
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  • −Application of Taft and the UV lamp for the direction of the wind confirmation−
    Hironobu KAJII, Shoji IGAWA, Sakuo SUGAWARA, Tadahiro TSUCHIKAWA, Seii ...
    Pages 93-94
    Published: 2020
    Released: April 23, 2021
    CONFERENCE PROCEEDINGS FREE ACCESS
    Last year, Multi-point Taft can confirm a breeze direction1).It is important to grasp movement of the wind. A long-time virus stays in the low humidity environment. A virus is more likely to fly far in low humidity2).New type PC set measure the structure of the building using a 3D laser 3).There was the news indicating the place where viruses were easy to collect as for the simulation by a flow of the air. The high-performance computer visualizes an air current, and the suggestion of the policy of the prevention of infection is reported. It is important that grasp the present air current. We introduce technique to divide a thread into thin. Ultraviolet rays germicidal light has been used for sterilization in the past. It stopped producing the germicidal light using mercury to 2020 for the thermometer beginning environmental conservation entirely. The high output of the ultraviolet rays wavelength area of the LED lamp performs the companies research and development to becoming it
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  • Takami Imanishi, Tetumi Hirikoshi
    Pages 95-98
    Published: 2020
    Released: April 23, 2021
    CONFERENCE PROCEEDINGS FREE ACCESS
    It is important that the interior style is “knowledgeable”, but the current situation is that it is not “standardized”. Therefore, the authors tentatively set the interior styles on the regional and the era axis, and investigated whether interior work examples by an interior coordinator can be classified into those styles. The frequency of appearance of the interior elements was investigated using the case of the interior works. Cluster analysis was performed based on the data, and the works were classified into 16 groups. The classification was shown to be consistent with the hypothetical classification in many cases. However, in some cases, different styles were mixed.
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  • Takami Imanishi, Misaki Hattori
    Pages 99-102
    Published: 2020
    Released: April 23, 2021
    CONFERENCE PROCEEDINGS FREE ACCESS
    In early childhood education, it is considered important to develop the senses of young children. It is said to be effective in using solid wood as an interior finishing material. In order to clarify the effect, a questionnaire survey was conducted to examine the use’s psychological evaluation. The subjects are teachers of A nursery school in Nagoya city and B nursery school in Tsushima city. As a result, a difference was shown between the solid flooring material and the PVC-finished flooring material for the following items: Significant differences were found in the items of “no glare”, “calmness”, and “softness”. Forestry Agency survey has shown that vibration is affected by the base material beneath the finishing material.
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  • - Consideration based on the Shinano Mainichi Shimbun “Anzu-chan” -
    Akihiro Yamagishi, Manami Yoshizawa
    Pages 103-106
    Published: 2020
    Released: April 23, 2021
    CONFERENCE PROCEEDINGS FREE ACCESS
    The purpose of this study is to study “Anzu-chan” published in the Shinano Mainichi Shimbun, and to examine living space and home economics education. The research subjects were published from January 1, 2014 to December 31, 2016, and data was extracted focusing on the correspondence between the living space and the characters, and the learning area of home education. The findings obtained from this study are as follows. 1) In the living space depicted in the story, the ratio inside the house is the highest at about 70%. 2) In the scene change of the living space, the ratio of the story progressing in the same space type is high at 84.4%. 3) In the relationship of living space, the kitchen is often treated as the stage of the story in relation to the living room. 4) Regarding the relationship of home economics learning content, about 30% of the total deals with home economics learning content, which is home economics 7.9%, clothing science 4.0%, food science 11.8%, and housing science 7.1%.
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  • Takako Fukazawa, Moena Kurahashi
    Pages 107-108
    Published: 2020
    Released: April 23, 2021
    CONFERENCE PROCEEDINGS FREE ACCESS
    Measurements of cutaneous warm and cold thermal sensitivity in leg and foot have been made with voluntarily participants of middle-aged Japanese female. Sixteen locations have been selected in the leg and the foot as target locations for the present study. The obtained warm thresholds were significantly larger than that the cold thresholds in the target locations (p< 0.05). That is, the result indicated that the sensitivity to detect warmth was less than to detect coldness in the leg and the foot. For the warm threshold, although there were regional differences found not to be significant in the tested locations, strong tendencies were seen in the local differences (p= 0.053). The largest warm threshold was seen in the outside the sole. For the cold threshold, there were significant local differences found to be remarkable in the tested regions (p<0.001). The cold threshold in the outside of the foot sole was largest than those in the other tested locations except heel with significances (p<0.05-0.001). This means, therefore, the sensitivity to detect coldness was lower on the outside of sole in the leg and foot.
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  • Kazuyo Tsuzuki
    Pages 109-110
    Published: 2020
    Released: April 23, 2021
    CONFERENCE PROCEEDINGS FREE ACCESS
    This study was aimed to investigate sleep and thermoregulation in evacuation shelter-analogue setting in winter using blankets for disaster relief and clothing. Subject experiments were conducted to examine the sleep variables using actigraphy, thermoregulatory responses, and environmental conditions for three conditions. The subjects completed questionnaires regarding their thermal sensation, comfort sensation, fatigue, and subjective sleepiness before and after the sleep. Young healthy students took part in the sleep study of three nights for seven hours from Midnight to 7 AM.
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  • Chihiro Miwa, Hiroya Shimasaki, Etsushi Nagae
    Pages 111-114
    Published: 2020
    Released: April 23, 2021
    CONFERENCE PROCEEDINGS FREE ACCESS
    The purpose of this study was to clarify the effects of bathing on thermoregulatory and cardiovascular responses in elderly persons compared to those in young persons. Ten young (20.4 years) and 10 elderly (69.7 years) individuals were asked to bathe for 15 minutes in water at 41 ℃. Tympanic temperature (Tty), skin blood flow (SkBF), sweating rate (SR), blood pressure (BP), heart rate (HR) and double product (DP) were measured. The results showed significant increases in Tty, SkBF, SR, HR in young participants than elderly participants, however, in young participants, changes in blood pressure were significant decrease than in elderly participants. These results demonstrate due to physical structure and function progress of aging during a 15-minute bath at 41 ℃.
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  • Shinji Yoshida
    Pages 115-118
    Published: 2020
    Released: April 23, 2021
    CONFERENCE PROCEEDINGS FREE ACCESS
    In this paper, the relationship between safety of thermal environment in residential houses in winter season and insulation performance considering the climate conditions were evaluated by using the BEST-H program, a computation tool for analyzing the thermal load in residential houses. In this analysis, the climate conditions for 12 cities in Japan were imposed to the input conditions for the thermal load computations. We also evaluated the thermal environment in the residential houses with the following two types of the insulation performances: (1) the houses with the insulation performance based on the Japanese energy saving standard (so-called “H25 Standard”), and (2) the houses without insulation. Through the investigations, the following three-knowledges were clarified: (1) The safety of the thermal environment in residential houses in the winter season are affected by both the insulation performance and the climate conditions, (2) The evaluation scores fluctuate widely in the turn of the seasons, and (3) It is suitable to maintain the warmth score for the residential houses up to 14 points in order to reduce the risk of both the cardiac and the brain diseases.
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  • Shinichi WATANABE, Tomoya ISHII
    Pages 119-122
    Published: 2020
    Released: April 23, 2021
    CONFERENCE PROCEEDINGS FREE ACCESS
    The purpose of this study is to clarify the thermal and ultraviolet environment in a snow-room “Kamakura” in snowy area. The measurement was performed on February 12, 2019 at the Nakao Kamakura Festival in Takayama City, Gifu Prefecture. Air temperature, relative humidity, air velocity, long- and short-wave radiation fluxes, UV Index, and carbon dioxide concentration were measured outdoors and inside the snow-rooms“Kamakura”. The following findings were obtained through the measurement. During the daytime of the measurement day, the average air temperatures of outdoors, “Kamakura1 (with one entrance/exit)”, and“Kamakura-2 (with two entrances/exit)” were 2.2°C, 0.4℃ and -1.1℃, respectively. The average values of UTCI were 20.3℃ outdoors, 2.1℃ for “Kamakura-1”, and 1.6℃ for “Kamakura-2”. The average outdoor UTCI was approximately 18℃ higher than that inside Kamakura. This can be explained that the MRT was high because the measurement day was clear and the solar radiation and reflected solar radiation by snow surface were large. The maximum value of the UV Index outdoors was 4.6, which was evaluated as a “moderate” UV environment. Meanwhile, the average values of UV index in both “Kamakura”ware 0. It can be concluded that the UV intensities in “Kamakura” was extremely small.
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  • Hirotaka KIHARA, Naoki MATSUBARA
    Pages 123-124
    Published: 2020
    Released: April 23, 2021
    CONFERENCE PROCEEDINGS FREE ACCESS
    It is necessary to eliminate the “psychological climate paradox” to improve the acceptance of a decarbonized society. According to a hearing survey of advanced areas in Europe, it was confirmed that climate variability measures are being implemented as means to improve the quality of life, and communication that forces residents to endure is intentionally avoided.
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  • [in Japanese], Kenichi AZUMA, Naoki KAGI
    Pages 125-126
    Published: 2020
    Released: April 23, 2021
    CONFERENCE PROCEEDINGS FREE ACCESS
    The usability evaluation experiment of wooden tableware and control tableware was carried out in laboratory and home. The participants were asked how they felt when using tableware and the atmosphere during meals. Wooden tableware was highly rated for its texture, sound, temperature and appearance. The atmosphere of the meals using wooden tableware was warm, and wooden tableware had the impression of “natural” and “traditional”.
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  • Experiment in virtual reality space using head mounted display
    Jin Ishii
    Pages 127-128
    Published: 2020
    Released: April 23, 2021
    CONFERENCE PROCEEDINGS FREE ACCESS
    The purpose of this study is to examine the effects of color and dimensions of toilet stall in sense of time and impression of toilet stall. A virtual reality head mounted display was used to evaluate these effects. The dimensions of toilet stall have an effect on the sense of time, and the color and dimension have an effect on the impression of toilet stall.
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  • Tetsumi Horikoshi, Satomi Kato, Kazuo Kato, Takami Imanishi
    Pages 129-132
    Published: 2020
    Released: April 23, 2021
    CONFERENCE PROCEEDINGS FREE ACCESS
    The objective of this paper is to clarify whether there is a ting of universal design in the streets and facilities of shrines and temples in the Owari region during the Edo period. Using the pictures of the “Owari Meisho Zuei”, we extracted the approach method, the device of visual information, and the resting place, and investigated their characteristics. As a result, it was shown in many cases that there are teahouses in front of the shrines and temples and in the precincts. As an approach, there were many cases where a gentle slope was good along with steep stairs. There were very few cases of assisting visual information. The existence of a landscape considering universal design was confirmed in the “Owari Meisho Zuei”.
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  • Pages App12-
    Published: 2020
    Released: April 23, 2021
    CONFERENCE PROCEEDINGS FREE ACCESS
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