• 환경위생공학
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• 제16권1호
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• pp.1-8
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• 2001

Since most people spend over 80% of their time indoor, indoor air quality tends to be the dominant contributor to personal exposure. In this study, indoor and outdoor $NO_2$concentrations were measured and compared with simultaneously personal exposures of 27 house-wives and female workers of kindergarten. Time activity pattern and house characteristics were used to determine the effects of these factors on personal exposure. Since house-wives student spent most their times in indoor with mean of 89.8%, their $NO_2$ exposure was associated with indoor $NO_2$ level(r= 0.92) rather than outdoor $NO_2$ level(r= 0.87). female workers were also associated with indoor $NO_2$ level(r= 0.70) though sample number were small. Using time-weighted average model, $NO_2$ exposures of house-wives were estimated by $NO_2$ measurements in indoor home and outdoor home levels. Estimated $NO_2$ personal exposures were significantly correlated with measured $NO_2$ personal exposures (r= 0.90). These results might mean that air pollutants exposure of old and feeble persons, and infants could be estimated by measuring concentrations of indoor home.

• 공학교육연구
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• 제23권5호
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• pp.68-75
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• 2020

In order to cultivate the talents acquired in the fourth industrial revolution, developed countries' government are actively engaged in the campaigns encouraging K-12 students to participate in the maker movement. Maker education is regarded as one possible solution based on high tech in the era of the 4th Industrial Revolution, and it is spreading widely along with STEM education. In South Korea, STEAM education was actively conducted nationwide, and since 2017, STEAM and maker education have been linked showing mutual development. However, compared to STEAM education linked to the curriculum, comparison and activity-based research on maker education for teenagers is still insufficient. Therefore, this study aimed to suggest implications for STEAM education and maker education by analyzing the motivation of Korean youth to participate in maker activities. The subjects of this study are high school students who participated in maker education programs in student community for the first time in Korea. In this study, students were classified into engineering-related career group and non-engineering-related career groups based on their career intentions, and the motivation and understanding of participation in maker activities were compared. As a result of the study, male students participated more in maker education community activities than female students, and the engineering-related career group had a higher intention to participate in games, outdoor activities, IT equipment, digital production, and electrical/electronic production activities than the non-engineering-related career group. In addition, in the fields of handicraft/art, home baking, installing, and horticultural agriculture, there was no difference in the intention of participate in the engineering-related career group and the non-engineering-related career group. It was found that the engineering-related career group believed that there was a strong relationship between the maker education community activity, career exploration and future career choice, while the non-engineering-related career group believed that the relationship is less strong. It was also found that the engineering-related career group was participating more actively in the maker activity than the other group.

• 한국도로학회논문집
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• 제13권4호
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• pp.187-198
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• 2011

그동안 어린이 교통안전 관련 자료 및 정책수립은 교통사고 발생 후 교통사고 건수 및 발생현황 중심으로 이루어져 왔으나 개별 어린이의 교통사고 노출 가능성 정도를 미리 진단함으로써 전체 어린이 가운데 위험정도가 높은 어린이들을 분류하여 이들에 대한 교통사고 예방교육에 주의를 기울일 필요가 있다. 이에 어린이의 교통안전행동을 측정함으로써 위험에 노출될 가능성 정도를 미리 파악할 수 있는 측정도구를 개발하는데 연구의 목적을 두고 있다. 예비검사용 문항(259문항)으로 서울시와 광역시 소재 초등학교 2곳을 임의 선정하여 총 600명을 대상으로 예비검사를 실시하였으며, 본검사는 약 3,500명을 대상으로 저학년은 53문항을, 고학년은 72문항을 사용하여 실시하였다. 연구결과 저학년용은 4개요인(행동통제부족성향, 공격성향, 자기 조절성향, 충동성향)으로 44문항을 추출하였고, 고학년용은 4개요인(행동통제부족성향, 우울성향, 자극추구성향, 공격성향)으로 69문항을 추출하였다. 교통안전행동에 문제를 지닌 학생과 문제를 가지지 않은 학생을 구분하기 위한 기준점수 산출시 남녀간 성별 차이를 고려하였다. 이로써 산출된 저학년용의 남자 어린이 기준점수는 63점, 여자 어린이 기준점수는 50점이다. 그리고 고학년용 남자 어린이 기준점수는 110점, 여자 어린이 기준점수는 99점이다.

• 한국화재소방학회논문지
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• 제29권3호
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• pp.70-80
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• 2015

본 연구는 여성119구급대원이 증가하고 있는 추세에 따라 소방 조직 내에서 여성119구급대원의 이미지를 향상시키고 그들을 효과적으로 활용할 수 있는 기초자료로 활용하고자 시행된 연구이다. 연구는 2013년 5월 1일부터 6월 30일까지 Q표본을 선정하여 구급차동승 현장실습을 경험한 응급구조(학)과 학생 총 31명을 대상으로 QUANL program을 이용한 Q방법론을 사용하여 분석하였다. 연구결과 '슈퍼우먼형', '체력한계 히어로형', '섬세한 수호천사형', '능숙한 데스크잡형'의 총 4가지 유형으로 분류되었으며 각각의 설명력은 제I유형 42.2%, 제II유형 4.8%, 제III유형 4%, 제IV유형은 3.6%로 전체변량의 54.7%를 설명하는 것으로 나타났다. 전체적으로 여성119구급대원을 전문가로 인식하고 있지만 체력적인면과 출산 및 육아에 대하여 부담을 가지고 있는 것으로 나타나 조직 구성원의 인식 변화와 제도적인 장치가 마련되어야 할 것이다.

• 공학교육연구
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• 제18권5호
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• pp.42-50
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• 2015

In spite that spatial ability has been recognized as an important element of academic achievement in engineering studies, researches on the topic are rather limited in Korea. In this study, the relationship between spatial visualization skill and academic achievement of engineering students was investigated based on the several variables such as gender, high school education background and college course achievement. The result showed that there were significant relevance between spatial visualization skill and gender, high school type, achievement of high school level math & physics, and college course work grade of computer graphic and capstone design. According the case study, from the entry time of engineering college, support programs to reinforce spatial visualization skill are required for lower skill groups such as female and graduate from art course in high school. Also, college curriculum such as Engineering graphics, Capstone design are substantial to improve spatial visualization skill. However, more diversified sample groups and research methods are required in order to draw in depth results.

• 환경위생공학
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• 제22권1호
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• pp.67-74
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• 2007

The purpose of this study is to provide the necessarily basic data of the ideal growth of the students by investigating the effect of the student's stress due to the parent's achievement pressure. The sample of this study are In students consisting of 51 boys and 49 girls in the 3rd grade classes of "J" middle school located in Siheung city, Kyungki-do. The observed materials are used to investigate the parent's achievement pressure and the level of stress. Based on the observed data, the frequency, correlation, and t-test have been gained. The results are summarized as follows : 1. The perception of the parent's achievement pressure is shown more by the boy's achievement pressure($44.2{\pm}9.9$) than the girl's achievement pressure($39.939{\pm}11.089$), among the high level students. 2. The perception of the parent's achievement pressure is shown more the high($43.0{\pm}10.7$) and middle($42.9{\pm}11.8$) level students than the low($39.7{\pm}8.00$) level students. 3. The stress of male students was high in the Solving Problem stress factor with by the mean of $15.1{\pm}3.7$, and the stress of female students was high in the Self-Control stress factor with the mean of $13.3{\pm}3.9$. 4. The stress of high, middle, low level student was high in the Solution of Matter stress factor with the mean of $14.2{\pm}3.9$. 5. The results were the main cause of the stress than the parent's achievement pressure.

• 대한인간공학회지
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• 제33권6호
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• pp.553-563
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• 2014

Objective: The purpose of this study was to evaluate the effect of gender (male, female) and grip spans (45, 50, 60, 70, 80mm) on total grip strength, resultant force, finger force and subjective discomfort rating. Background: In order to prevent musculoskeletal disorders, studies of hand tools need to be preceded based on grip strength, finger force, and subjective discomfort rating. However, experimental apparatus using tools such as pliers that reflect the actual work place was almost non-existent. Method: Fifty-Two (26 males and 26 females) participants were recruited from the student population. In this study, a pair of revised pliers, which can change grip span from 45 to 80mm was applied to estimate total grip strength, resultant force and individual finger forces. All participants were asked to exert a maximum grip force with three repetitions, and to report the subjective discomfort rating for five grip spans of pliers (45, 50, 60, 70, 80mm). Results: There were significant differences of total grip strength, resultant force, individual finger forces and subjective discomfort rating according to grip span. The lowest total grip strength was obtained from the grip span of 80mm for both genders. For resultant force, the highest resultant force was exerted at grip spans of 50, 60 and 70mm for females and 50 and 60mm for males. The lowest subjective discomfort rating was observed in the 50mm for both genders. Conclusion: Based on the result, 50mm and 60mm grip spans which provide the highest force and lowest discomfort rating might be recommendable for the male and female pliers users. Application: The findings of this study can provide guidelines on designing a hand tool to help to reduce hand-related musculoskeletal disorders and obtain better performance.

• 대한치과기공학회지
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• 제33권4호
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• pp.495-503
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• 2011

Purpose: The purpose of this study was to obtain data that can be utilized in the planning of oral health education plan, by surveying the correlation between oral health knowledge, attitude, and behavior among high grade students elementary school in some regions of the metropolitan. Methods: The subject of this study through the survey of the recognition of the oral health, a questionnaire survey was conducted for 548 male and female students who were in the 4th, 5th, 6th grade of elementary school in some regions of the metropolitan. Statistical analysis was conducted using the SPSS 12.0 with t-test, ANOVA, and correlation. Results: Knowledge of oral health was very high. Correct attitudes and positive behavior were indicated. There was a significant difference in oral health knowledge according to school year and parents' dental condition(P<.05). The student one recording oral health behavior degree where the oral health knowledge is high appears highly, considers statistically the difference which it was visible. Positive correlation was significantly observed among oral health knowledge, attitudes, and behavior. Especially, attitudes and toothbrush method were highly correlated(r=.853). Conclusion: Oral health program through the elementary school students and their parents for the development of proper oral health care education programs continue to be made should be considered.

• 한국초등과학교육학회지:초등과학교육
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• 제42권4호
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• pp.605-617
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• 2023

본 연구에서는 공학적 설계 과정을 강조한 STEAM 프로그램을 개발·적용하여 초등학생들의 창의적 공학문제해결 성향 및 자기주도적 학습 능력에 미치는 영향을 조사하고 성별에 따른 차이를 비교·분석하였다. 경인지역 초등학교 4학년 학생 141명을 대상으로, 개발된 프로그램을 5차시에 걸쳐 진행하고 창의적 공학문제해결 성향과 자기주도적 학습 능력에 대한 사전·사후 검사를 실시하였으며 프로그램에 대한 만족도 및 인식 검사도 진행하였다. 연구 결과, 공학적 설계 과정을 강조한 STEAM 프로그램은 초등학생들의 창의적 공학문제해결 성향 및 자기주도적 학습 능력 향상에 효과적이었으며, 특히 여학생에게 효과적인 것으로 나타났다. 성별에 따른 변화의 차이 분석 결과, 창의적 공학문제해결 성향의 하위요인인 '소통 및 협업능력'을 제외한 모든 요인에서 여학생들의 유의미한 향상이 나타났다. 남학생의 경우, '공학설계', '소통 및 협업능력' 요인에 대해 유의미한 효과가 있었다. 프로그램에 대한 학생 만족도와 인식을 분석하고 이에 대한 교육적 함의를 논의하였다.

• 공학교육연구
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• 제25권5호
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• pp.85-93
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• 2022

Capstone Design, a project-based learning technique, is the most important curriculum that clarifying major knowledge and cultivating the ability to apply through the process of solving problems in the industrial field centered on the student project team. Accordingly, various and extensive studies are being conducted for the successful implementation of capstone design courses. Unlike previous studies, this study aimed to quantitatively analyze the opinions that recorded the experiences and feelings of students who performed capstone design, and used text mining methodologies such as frequency analysis, correlation analysis, topic modeling, and sentiment analysis. As a result of examining the overall opinions of the latter period through frequency analysis and correlation analysis, there was a difference between the languages used by the students in the opinions according to gender and project results. Through topic modeling analysis, 'topic selection' and 'the relationship between team members' showed an increase in occupancy or high occupancy, and topics such as 'presentation', 'leadership', and 'feeling what they felt' showed a tendency to decreasing occupancy. Lastly, sentiment analysis has found that female students showed more neutral emotions than male students, and the passed group showed more negative emotions than the non-passed group and less neutral emotions. Based on these findings, students' practical recognition of the curriculum was considered and implications for the improvement of capstone design were presented.