• Journal of Environmental Health Sciences
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• v.50 no.2
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• pp.157-167
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• 2024

Background: Several previous studies have shown that commuting is a source of stress for undergraduate students. However, few studies have investigated the effect of commuting on academic stress among undergraduate students, and there has been little awareness of the environmental impact of commuting. Objectives: To evaluate the associations between commute type and/or time and academic stress among undergraduate students in South Korea, focusing on environmental sustainability. Methods: We conducted an online survey and obtained information on commute types, commute times, and academic stress from 510 undergraduate students aged ≥19 years. Academic stress was comprised of five sub-categories of stress, and total academic stress ranged from 5 to 25 points. Multiple linear regression analysis was used to analyze the associations between commute type and commute time and academic stress. Furthermore, the students were grouped into 21 categories based on their transportation mode for commuting. CO₂ emission factors per each commuting category were calculated using the transportation type's CO₂ emission data from previous studies. Spearman's correlation analysis was used to confirm the correlation between CO₂ emission factors and total academic stress. Results: Students using home-to-school transportation without transfers (vs. walking) showed a significantly higher total academic stress of 2.19 points (95% CI: 0.58, 3.80). In contrast, students using school-to-home transportation without transfers (vs. walking) showed a significantly lower total academic stress of 1.96 points (95% CI: -3.55, -0.38). Moreover, students using transportation with lower CO₂ emission factors had lower academic stress scores (home-to-school: correlation coefficient = 0.507, p<0.001; school-to-home: correlation coefficient = 0.491, p<0.001). Conclusions: Our findings suggest that both commute type and time are significantly associated with academic stress among South Korean undergraduate students. When students select environmentally-friendly transportation, they may not only improve their mental health but also improve climate resilience.

• Proceedings of the Korea Information Processing Society Conference
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• 2022.11a
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• pp.997-999
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• 2022

아기의 심장 박동 소리를 듣지 못하는 청각 장애 부모를 위한 태아 초음파 심장박동 촉각 변환 시스템을 개발하고자 하였다. 본 시스템은 아기의 심장박동 소리를 USB 마이크를 이용하여 소릿값을 입력받아 이에 대응하는 값을 진동 모터의 진동 출력 세기와 LED 밝기의 세기로 출력시키도록 하였다. 아기의 심장박동 느낌을 진동으로 표현해 내기 위해 진동의 샘플링 주기를 구체적인 수치로 조절하였고 산모에 따라 진동의 세기와 주변 잡음 제거를 할 수 있도록 조절하는 가변저항 2개를 연결하였다. 그 결과 태아 초음파 심장박동 촉각 변환 시스템을 성공적으로 개발하였으며 장치 체험자들로부터 총 평균 4.63점으로 높은 만족도를 얻었다. 개발 제품은 청각장애 산모들의 모성애를 충족시키고 아기의 심장박동을 느낌으로써 아기의 존재를 느낄 수 있을 것이며, 산부인과의 초음파 영상진단의 확장 신기술로 활용할 수 있을 것으로 기대된다.

• 치위협보
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• s.101
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• pp.1-12
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• 2005

• Journal of the Korea Convergence Society
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• v.9 no.4
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• pp.433-442
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• 2018

This study investigated factors affected to adjustment of college life character, interpersonal personal relationships of total 220 health-related college in G-city. This study was conducted by a self-report type survey between August 1 and December 30 in 2017, according to the findings, character level is aver. 3.49(1-5 score), interpersonal relationship aver. 3.40(1-5)score, adjustment to college life aver. 3.33(1-5)score were showed medium level, The relation between character, interpersonal relationship(r=.62, p<.001), adjustment to college life, character(r=.62, p<.001), adjustment of college life, interpersonal relations(r=.80, p<.001), Major satisfaction and adjustment of college life(r=-.32, p<.001) showed a significantly correlation of medium level. With improved personal relationships and higher behavior factor of level of character college adjustment to college life of these factors is 65%(F=102.97). The results reveals to develop program interpersonal relationship and character of college students in oder to improve adjustment process to college life.

• Journal of Biomedical Engineering Research
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• v.42 no.1
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• pp.18-24
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• 2021

Vibration is a mechanical cue that can be applied to adipose tissues for the purpose of treating obesity. However, the exact correlation between vibration and other anti-adipogenic pathways, such as development of cytoskeleton and apoptosis, remains unknown. The objective of this study was to investigate the unknown anti-adipogenic effects of vibration with varied frequencies on preadipocytes. 3T3-L1 preadipocytes were cultured in Dulbecco's modified Eagle's medium (DMEM) containing 5% calf serum at 37 ℃ with 5% CO2 in a humidified incubator. Vibration was generated using Arduino Uno microcontroller and vibration motor module with 1 V DC, and applied to preadipocytes for 3 days. Frequency conditions were set to 20, 55, and 90 Hz. Then, the expressions of p38 pathway, ROCK-1, α-actinin, Bax, Bcl-2, caspase-9, 8, and 3 were analyzed with western blot. As a result, p38 pathway was inhibited in 55 and 90 Hz while ROCK-1 and α-actinin were expressed in 20 Hz. Caspase-3, a terminal apoptotic factor, was activated in 20 Hz via extrinsic pathway rather than intrinsic pathway. Results suggest that various frequencies of vibration can inhibit adipogenesis via different pathways which sheds light on future mechanotransduction applications of vibration for the treatment of obesity.

• Journal of Korean Society of Occupational and Environmental Hygiene
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• v.32 no.1
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• pp.41-52
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• 2022

Objectives: This study intends to review the impact on cleaning workers and suggest directions for improvement by reviewing the legal and institutional ways in which Article 86 Nos. 7 and 16 of the Enforcement Decree of the Occupational Safety and Health Act work on the maintenance and promotion of cleaning workers' health. Methods: The following laws and systems were reviewed and considered: First, the occupational safety and health legislation obligated or required to be applied to protect the health of cleaning workers; Second, the status of control of chemicals or mixtures used at cleaning sites through the Consumer Chemicals Product and Biocide Safety Control Act; Third, Control of consumer products according to foreign material safety data sheet related laws. Results: Legal and institutional measures necessary to protect the health of cleaning workers include the legal control of harmful substances to be controlled, work environment monitoring, and special health examinations. The application of the Consumer Chemicals Product and Biocide Safety Control Act does not satisfy the legal and practical level of health maintenance and promotion required by the Occupational Safety and Health Act, and the communication of chemical information is insufficient. Overseas, there are restrictions on the use of consumer products in the workplace without material safety data sheets. Conclusions: It is necessary to improve the system to ensure the health of workers handling consumer chemical products. The remaining laws and regulations exempted from the obligation to prepare material safety data sheets should be additionally reviewed.

• Journal of the Korean Society of Physical Medicine
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• v.14 no.3
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• pp.117-126
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• 2019

PURPOSE: This study examined the effects of a horse riding simulator, gym ball, and McKenzie exercises on back pain and static balance. METHODS: Among 30 participants with chronic back pain and more than 5 points of ODI, 28 participants were selected. Groups of performing either horse riding, gym ball, or McKenzie were chosen randomly to work out two times a week for six weeks. The static balance was measured using a gym plate and the degree of pain was measured by the VAS and K-ODI. RESULTS: When each exercise was applied to back pain patients, the VAS was changed in all three groups but only in the gym-ball exercise group. The K-ODI varied in all three groups but not in the gym-ball exercise group, In the anterior - posterior static balance, all three groups showed changes, but only the riding exercise group was not significant. In the left-right static balance, all three groups were significant. CONCLUSION: This study showed that six-week exercise for back pain patients was effective in improving back pain and balance ability. Continuous exercise minimizes the risk of recurrence and is effective in preventing and treating back pain.

• 학교보건
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• s.1
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• pp.36-38
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• 1975

이 논문은 한국학교보건협회 주최로 지난 1973년 서울대학교 보건대학원과 부산 대학교 의과대학에서 있었던 학교보건 세미나에서 발표된 것이다. <편집자주>

• 대한예방의학회:학술대회논문집
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• 1999.10a
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• pp.130-131
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• 1999

• 대학교육
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• s.8
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• pp.103-105
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• 1984