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The Influence of Foliage Plants on Psychological and Physiological Responses

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Health 2017年第4期9卷 601-621页

作者： Yoshihito Kurazumi Emi Kondo Kenta Fukagawa reiko hashimoto Agnes Nyilas Tomonori Sakoi Tadahiro Tsuchikawa School of Life Studies Sugiyama Jogakuen University Nagoya Japan Department of Architecture Ariake National College of Technology Omuta Japan Department of Architecture Kyushu Sangyo University Fukuoka Japan Academic Assembly Institute of Textile Science and Technology Shinshu University Ueda Japan School of Human Science & Environment University of Hyogo Himeji Japan

This research aims to clarify the significance of incorporating visual stimulation, in the form of foliage plants, into office desktop spaces. The experiments were conducted in a thermal environment with a temperature range that was slightly uncomfortable. The indoor thermal environment evaluation index ETF was used to measure the effects that brain stimulation of foliage plants have on comprehensive thermal senses. We focus on visual stimulation with foliage plants, and quantitatively measure shifts in thermal senses that affect the body. Thermal environment conditions were established with air temperature in three stages (25℃, 28℃ and 31℃) and the atmosphere was kept homogeneous with wall surface temperature equal to air temperature. The visual stimulations consisted of seven types of office desk image: benjamin, pothos, oxycardium, baby tears, moss ball, cacti, and no plant. At around 27℃ to 29℃ ETF, improvements in thermal sensation, as measured by thermal sensation statements, were shown to have resulted from visual stimulation benefits. Also, at around 26℃ to 29℃ ETF, improvements in comfort were shown, due to visual stimulation benefits as well, in subjects’ comfortable-sensation statements. This benefit was significant when a foliage plant’s green coverage ratio came between 0.75% and 4.67%, the range which does not create an overwhelming feeling from the foliage plant.

关键词： ETF Foliage Plant Thermal Sensation Thermal Comfort Visual Stimuli

Clothing Thermal Insulation for Typical Seasonal Clothing of Infant with Infant Thermal Manikin

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Engineering（科研） 2021年第7期13卷 372-387页

作者： Yoshihito Kurazumi Kenta Fukagawa Tomonori Sakoi Akie Naito Motoe Imai reiko hashimoto Emi Kondo Tadahiro Tsuchikawa School of Life Studies Sugiyama Jogakuen University Nagoya Japan Department of Architecture Kyushu Sangyo University Fukuoka Japan Department of Advanced Textile and Kansei Engineering Shinshu University Ueda Japan Institute for Global Leadership Ochanomizu University Tokyo Japan Graduate School of Life Studies Sugiyama Jogakuen University Nagoya Japan Department of Comprehensive Engineering Kindai University Technical College Nabari Japan School of Human Science & Environment University of Hyogo Himeji Japan

Infants are less thermally adapted to their environment and can be considered as needing protective measures against thermal environments. It is not ethical to conduct subject experiments on infants. Thermal insulation in clothing is an essential control coefficient for the evaluation of the thermal environment of an infant. A thermal manikin can be used as an alternative method for carrying out experiments and to control the thermal manikin based on heat balance. The purpose of this study was to clarify the thermal insulation of infants’ clothing. An infant thermal manikin was used to clarify the thermal insulation (Icl) of typical summer, mid-season, and winter clothing combinations for infants. The thermal insulation of typical seasonal clothing combinations was 0.30 clo for summer clothing, 0.57 clo for mid-season clothing and 1.02 clo for winter clothing. It was clarified that it is essential to consider clothing conditions by taking into account differences in posture and to define the clothing thermal insulation (Icl) when designing and evaluating thermal environments. When designing and evaluating an infant’s thermal environment, it is essential to investigate using data from infants.

关键词： Clothing Thermal Insulation Infant Posture Season Thermal Environment Thermal Manikin

Influence of Stroller upon Thermal Insulation of Infant

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Health 2021年第9期13卷 955-974页

作者： Yoshihito Kurazumi Kenta Fukagawa Tomonori Sakoi Ken Yamashita Akie Naito Motoe Imai reiko hashimoto Emi Kondo Tadahiro Tsuchikawa School of Life Studies Sugiyama Jogakuen University Nagoya Japan Department of Architecture Kyushu Sangyo University Fukuoka Japan Department of Advanced Textile and Kansei Engineering Shinshu University Ueda Japan Institute for Global Leadership Ochanomizu University Tokyo Japan Graduate School of Life Studies Sugiyama Jogakuen University Nagoya Japan Department of Comprehensive Engineering Kindai University Technical College Nabari Japan School of Human Science & Environment University of Hyogo Himeji Japan

In outdoor spaces, infants in strollers are significantly affected by thermal radiation from the ground surface due to their proximity to it. Infants are at increased risk of heat stroke while riding in a stroller. Infants are less thermally adapted to their environment and can consequently be considered to need protective measures against thermal environments. In order to treat strollers as clothing, in the present study, experiments were conducted to clarify the thermal environment of an infant riding in a stroller. Using an infant thermal manikin, the clothing area factor fcl and the clothing thermal insulation Icl of the stroller were determined. The stroller clothing area factor fcl was 3.21 and the stroller clothing thermal insulation Icl was 0.47 clo. Therefore, it can be inferred that strollers have a pronounced effect on the body heat balance between an infant and their environment.

关键词： Heat Stroke Infant Stroller Clothing Thermal Insulation Thermal Manikin Thermal Environment

Availability of Heat Conduction for Environmental Control Method to Improving Thermal Environment and Preventing Oversensitivity to Cold and Air-Conditioning Disease on Female Office Workers

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Health 2016年第6期8卷 583-604页

作者： Yoshihito Kurazumi Emi Kondo Kenta Fukagawa reiko hashimoto Yoshiaki Yamato Kunihito Tobita Tomonori Sakoi Tadahiro Tsuchikawa Tetsumi Horikoshi School of Life Studies Sugiyama Jogakuen University Nagoya Japan Department of Architecture Ariake National College of Technology Omuta Japan Department of Architecture Kyushu Sangyo University Fukuoka Japan Department of Architecture and Structural Engineering Kure National College of Technology Kure Japan School of Humanities and Social Sciences Osaka Prefecture University Sakai Japan Kansei Engineering Course Shinshu University Ueda Japan School of Human Science & Environment University of Hyogo Himeji Japan Department of Architecture Aichi Sangyo University Okazaki Japan

The purpose of this study is to demonstrate the effect localized heating of the feet has on physiological and psychological reactions of female in an air-conditioned environment in summer. In Japan, female office workers wear less clothing than their male counterparts. In an air-conditioned office space in summer, female conducts thermoregulation by putting on cardigans, etc. but this action does not greatly contribute to improving conditions for the legs and feet, the lower extremities of the body. The improvement of sensational and physiological temperature by localized warming of the body can contribute to a healthy working environment for female office workers, their safety, and a reduction in air conditioning’s energy expenditure. We used the indoor thermal environment evaluation index ETF to investigate the effect localized heating of the feet has on human physiological and psychological response in an air-conditioned environment in summer. The result of heating by means of heat conduction via the sole of the foot was expressed more strongly as a psychological effect than as a whole-body physiological effect. Heating by means of heat conduction via the sole of the foot was a thermal environment factor that compensates for a low temperature in whole-body thermal sensation and whole-body thermal comfort. The effect of heating due to heat conduction via the sole of the foot was expressed in the change in sole-of- the-foot skin temperature. Applying slight heat conduction by means of heating via the sole of the foot demonstrated the result of improved whole-body thermal sensation and whole-body thermal comfort.

关键词： Female Office Worker Sensitivity to Cold Thermal Environment Thermal Sense

Effect of Visual Stimuli of Indoor Floor Plants upon the Human Responses

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Health 2018年第7期10卷 928-948页

作者： Yoshihito Kurazumi reiko hashimoto Agnes Nyilas Ken Yamashita Kenta Fukagawa Emi Kondo Yoshiaki Yamato Kunihito Tobita Tadahiro Tsuchikawa School of Life Studies Sugiyama Jogakuen University Nagoya Japan Department of Architecture Kyushu Sangyo University Fukuoka Japan Department of Architecture Ariake National College of Technology Omuta Japan Department of Architecture and Structural Engineering Kure National College of Technology Kure Japan School of Humanities and Social Sciences Osaka Prefecture University Sakai Japan School of Human Science & Environment University of Hyogo Himeji Japan

The biophilia hypothesis maintains that animals, which bring benefits for human survival, evolve adaptively to cause a positive emotional response or actions in the human evolution process. When connected in an advantageous environment for survival, effective relaxation and recovery from fatigue are brought about as further physiological functions, rather than a simple stress-free situation. The aim of this study is to clarify the significance of the visual stimulation of indoor floor plants placed in an office floor space. We examined how the green covering factor and gaze distance to indoor floor plants placed on the floor influenced thermal sensation. The thermal environment conditions were set at 3 levels, 25°C, 28°C, and 31°C and the floor and air temperature were homogenous. We set up 8 office floor plans that had no visual stimulation and used indoor floor plants including pachira, monstera, butterfly palm, yucca elephantipes, weeping fig, umbellate, and snake plant for a visual stimulation. The gaze distance, measured from the center of the subject presented with a visual stimulation and the center of the plant, was set at 3 distances: 2.0, 4.5 and 8.0 m. When the conduction-corrected modified effective temperature (ETF) was below 26°C, the visual stimulation of the indoor floor plants umbellata and monstera, which have a silhouette with low leaf density and rounded leaves, were shown to mitigate the sensation of being cool. The visual stimulation of indoor floor plants with rounded leaves, such as, pachira, monstera, weeping fig, and umbellata, were shown to decrease the feeling of discomfort. For a gaze distance below 4.5 m, a green covering accounting for less than 5% was shown to be necessary for mitigating the sensation of being cool and improving the feeling of discomfort.

关键词： ETF Green Covering Ratio Gaze Distance Indoor Floor Plant Thermal Response