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이정우,지남용 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2
In this study, the egress regulations of several countries are compared. The concept and the engineering basis of these provisions are discussed for developing performance based standards. The regulations of advanced countries are changed from standardized and simple prescriptive regulations to performance based regulations, but the domestic regulations are very basic and uniform. Thus, our country needs to apply performance based standards for efficient egress regulations.
Jongsuk Chun,Jungwoo Jee,Kyoung Sook Hwang 대한인간공학회 2011 大韓人間工學會誌 Vol.30 No.4
Objective: The study was performed to suggest factors to consider when making or selecting protective clothing to enhance farmers’ health. The purpose of this study was to review and summarize the agricultural safety technology on clothing including hat, gloves, and shoes. Background: The farmers’ work clothing has to meet a multitude of requirement. Risk factors in farm-work were identified by previous researches. Agricultural safety clothing needs to be introduced. Method: We reviewed previous papers regarding the agricultural workers’ health, safety clothing to protect body from excessive heat and humid environment, ultraviolet(UV) protection, and hazardous body working postures. Also the UV cut effect, pesticideproof clothing, and preventable farm work related musculoskeletal disorders were discussed. Results: The agricultural safety clothing needs to be developed to provide comfort and to be resistant against heat. The UV protection function on skin and eyes has not been fully researched in safety clothing studies yet. Conclusions and Application: The farmers’ work-related body posture needs to be studied in order to make and design agricultural safety clothing. The safety issues on agricultural work shoes are also needed to be included in future studies.
Change of Cervical Curvature Angle by Wearing the Posture Corrective Garment
Jongsuk Chun,Jungwoo Jee,Hyunsook Kim,Minsun Kim,Kyounghyun Kwon 대한인간공학회 2015 대한인간공학회 학술대회논문집 Vol.2015 No.10
Objective: The purpose of this study was to measure the wearing effect of the posture corrective garments. The experimental garments were developed by reflecting the kinematical relation of sternoclavicular articulation, spine and muscles of dorsum. The posture correction effect was measured by the change of cervical curvature angle and distance. Background: Contemporary lifestyle pushes the people an unhealthy posture. The way of rehabilitation medicine has been increased to solve this problem. In the fashion industry, functional garments to correct posture are commercialized. However, there are few studies which analyze quantitatively the effect of posture corrective clothing. Method: Two types of posture corrective garments were developed. They spread shoulders and straighten the cervical vertebral and lumbar by changing sternoclavicular articulation. The posture correction effect was measured by the change of cervical curvature angle and horizontal distance between cervical curvature and tragion. 4 subjects participated in the experiment. They had various cervical curvature angles. Results: The cervical curvature angle of the subjects varied from 26°to 41° at static posture without experimental garments. By wearing the posture corrective garments, their cervical curvature angle was decreased by 1.39°~7.75°. The result implies that the developed posture correction garments have positive effect on the people who have low level of cervical lordosis. Application: the relation between design feature and the wearing effect of the posture corrective garments should be studied in the follow-up study.
A study on 3D human body scan posture -Focusing on core muscle strengthening posture-
Minsun Kim,Jongsuk Chun,Jungwoo Jee 대한인간공학회 2018 대한인간공학회 학술대회논문집 Vol.2018 No.5
Objective: The purpose of this study is to propose an experimental body scan posture for 3D human body surface data. The experimental posture is designed to represent three typical core strengthening postures. Background: The population of people with lower back pain and pelvic pain is increasing in Korea. It has been claimed that some functional compression garment may stabilize muscles and it can prevent musculoskeletal disorders. In order to develop functional garments, collecting body surface data from 3D body scan is necessary. When typical core muscle strengthening body postures are used in 3D body scan, surface data from the hidden body parts may not be collected. Method: Three core strengthening postures and one experimental posture were selected as the 3D body scan posture. Thirty one muscles selected by the concept of myofascial meridians were analyzed. The muscles without missing area in the body scan data were classified by each scan posture. The muscles showing the same direction of variation patterns were identified by comparing the body surface area change of the three core strengthening posture with those of the experimental posture. Among the muscles showing different variation patterns, the muscles with less than 10% in difference of change rate were classified as a group with no difference. Results: Fourteen muscles in plank posture and seventeen muscles in each hip bridge posture and thigh rock-back posture were measurable. 78.6% of the muscles in plank posture, 88.2% of the muscles in hip bridge posture and 76.5% of the muscles in thigh rock-back posture were classified as a group with no difference compared with muscles in experimental posture.
( Minji Lee ),( Jongsuk Chun ),( Jungwoo Jee ) 한국감성과학회 2014 춘계학술대회 Vol.2014 No.-
This study is to suggest how to make the ergonomic clothing patterns using the Lines of Curvature Intersection (LoCI) which derive from the analysis on 3D human body surface as a cutting line. The LoCI is defined with the points where there is no change in curvature on body from the 3D body scan slicing data. It set up cutting lines to flatten body surface. The authors analyzed curvature on body surface using the 3D scan slicing data in static posture and extracted the positions of 3D lines where the most concave part met the most convex part between muscles on body surface.The lines of curvature intersection on human body surface when dividing body surface and designing development pattern for compression pants. The pattern was developed with 6-panel type including the panels with patella and quadriceps femoris muscle and the panel separating patella section from calf. The study verified that the 3D ergonomic patterns of compression pants designed reflecting the lines of curvature intersection better fitted the curved surface panel of human body increasing tight-fitness nature and decreasing muscle fatigue as well as granting higher objective comfort.