• 산업기술연구
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• 제41권1호
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• pp.15-20
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• 2021

This work proposes a simple method to use the added absorption per person values to predict the expected values of the acoustical conditions in occupied classrooms. This method is based on the effects of the values of added absorption per person on the unoccupied total absorption values of the classrooms and on other room acoustical parameters. The total sound absorption in an unoccupied classroom can be calculated from measured reverberation times in the classroom. The expected occupied absorption can be calculated using equation which was obtained in a previous study (Choi, 2017) by fitting a linear regression line to a plot of total occupied absorption versus the corresponding unoccupied total absorption values measured in 12 university classrooms. The ratios of occupied-to-unoccupied sound absorption are used to predict increments in the values of acoustical parameters that result when occupants are added to the rooms.

• International Journal of Internet, Broadcasting and Communication
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• 제15권1호
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• pp.211-221
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• 2023

After COVID-19, various metaverse platforms for online lectures are being provided. Most of the classrooms are tiered type, and they are divided into intensive classrooms and open classrooms depending on the shape of the classrooms. Intensive classrooms provide a one-sided lecture format, so there are many difficulties in conducting communication-based classes that carry out team missions like PBL classes. In this study, we propose a metaverse classroom that applies the functions of a multiplayer online role-playing game (MMORPG), one of the game genres suitable for PBL classes. The proposed system provides various interaction techniques for PBL classes. We evaluated user satisfaction when this was applied to actual classes. As a result of the evaluation, it was found that users preferred text and voice chatting more than video chatting and solving missions like games was very helpful in online classes.

• 교육시설
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• 제11권2호
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• pp.17-23
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• 2004

The purpose of this study concerns the improvement of air quality in school classrooms. Polluted indoor air is improved by efficient ventilation systems. So it is important to measure the amount of ventilation needed in classrooms. First, the amount of natural ventilation were measured through a tracer gas method. And we have established a heat recovery ventilation system from 4 cases of airflow in classrooms, and we have measured the change of $CO_2$ density. According to air quality measurements in the classrooms, the density of $CO_2$ is well above environmental standards which are acceptable. When the amount of ventilated airflow increases, indoor air quality is improved. It is surveyed that the most suitable amount of external inducted air is 770 CMH to satisfy $CO_2$ less than 1,000 ppm in classrooms. For improvement of air quality in classrooms, we must consider a suitable ventilation plan and installation of ventilation systems when constructing school buildings.

• 수산해양교육연구
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• 제17권1호
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• pp.35-47
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• 2005

The purpose of this study is to investigate various kinds of discipline problems in middle school classrooms, and the differences in severity and frequency of the classroom discipline problems between male and female students' classrooms in middle schools. This study shows that the discipline problems in the middle school classrooms include using a cellular phone, chattering, sleeping, chewing gum, reading comic books, asking useless questions, challenging a teacher, fighting, calling names, skipping class, throwing trash in the classroom, breaking classroom equipment, creating disorder, losing materials, playing with a ball in the classroom, gambling, and so on. Generally, male students recognized the severity of the classroom discipline problems more than the female students. However, it is shown that the frequency of discipline problems in male students' classrooms is higher than that in female students' classrooms. From the results of this study, male students have more active discipline problems (playing with a ball in the classroom, throwing trash in the classroom, coming to class late, gambling, cutting in line, and so on). On the other hand, female students have more passive discipline problems (making a noise by using a cellular phone, asking useless questions, sending messages to a classmate, studying other subjects, scattering, and so on).

• 교육녹색환경연구
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• 제2권1호
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• pp.49-67
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• 2002

The purpose of this study is to be able to accept various educational processes with a few classrooms by multi-purpose uses special classrooms and supporting facilities of medium and small sized elementary school. For this purpose, I had divided into three parts by analyzing correlation of each classrooms according to the types of lessons, necessary equipment, building equipment environment, the need of users. The types of lessons and necessary facilities make the scope of each classrooms throughout Correspondence Analysis, and the need of users that is the recognized similarity between each rooms by teachers, make the scope by using Multi-Dimensional Scaling(MDS). Establish the final scope by combining and analyzing the already classified rooms by each factor. Lastly, calculate the numbers of rooms by applying the usage rate of each classified classroom and examine the standard of planning and the example of composition for the multi-purpose uses of combined room.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2014년도 추계학술대회 논문집
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• pp.888-892
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• 2014

This paper evaluates $C_{50}$ in elementary school classrooms and considers utilization of $C_{50}$ as an assessment indicator of acoustic performance. $C_{50}$ is early-to-late arriving sound ratio, recent study reported that $C_{50}$ is more appropriate as a measure of clarity and speech intelligibility than D50 because it is linearly related to subjective responses. The average of $C_{50}$ in elementary school classrooms appeared to be about +2 dB ~ +3 dB throughout 500 Hz ~ 4 kHz. However, absolute evaluation is difficult because there is no suitable reference or standard yet. As deviation of $C_{50}$ according to location is larger than reverberation time, it is expected that $C_{50}$ will be more sensitive when someone assesses acoustic performance of classrooms. Correlation between $C_{50}$ and reverberation time is very high. From logarithmic regression equation, we can estimate appropriate range of $C_{50}$ in elementary school classrooms indirectly, using standard of reverberation time in ANSI.

• 한국농촌건축학회논문집
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• 제16권4호
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• pp.43-50
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• 2014

Since the introduction of the Departmentalized Classroom System in 2009, schools that operate the system experienced many changes in terms of school management, educational courses, and school environment. In particular, class-based classrooms changed into departmentalized classrooms and staff rooms became teachers' support centers and research rooms to create an environment that is apt for the management of departmentalized classrooms. Students have also come to move from departmentalized classrooms to departmentalized classrooms in which homebases were prepared as a space for students to rest and enjoy a stable school life. As such, homebases as a space for students to enjoy school life are indispensable and are becoming more important for the management of the Departmentalized Classroom System. Thus, it is necessary to investigate in detail the state of the establishment of homebases in schools that operate the system. In line with this, this paper sampled 59 schools that have managed the system as an advanced system for over 2 years and conducted school visits and held interviews to investigate and analyze the placement, function, and scale of homebases as well as to provide basic material on homebases.

• 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
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• 제30권1호
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• pp.19-26
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• 2024

Purpose: Autism spectrum disorder impacts children's social, sensory, and language development, necessitating specialized educational support. Special classrooms play a crucial role in providing an appropriate learning environment for children with autism. However, there is a lack of systematic research on creating effective environments in these special classrooms. Methods: This study aims to gain a comprehensive and systematic understanding of the environmental composition of special classrooms for children with autism spectrum disorder, using the following systematic methodologies including literature review and case study. Results: Sensory spaces in special classrooms for children with autism help regulate sensory stimuli and promote sensory development. They provide stability, reducing stress from excessive stimuli, and enhance emotional stability. These spaces also promote communication and interaction among children and expand the diversity of learning activities, enriching experiences and stimulating interest in learning. Implications: Based on the results, we propose suggestions for improving the environment of special classrooms for children with autism spectrum disorder and provide direction for the design of such environments.

• 한국산학기술학회논문지
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• 제15권4호
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• pp.2476-2483
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• 2014

본 연구는 국가기록원에서 소장하고 있는 조선 총독부 생산의 학교건축 도면 분석을 통해 일제 강점기 관립 중등학교 특별교실의 계획특성을 살펴보고자 하였다. 연구 결과를 정리하면 다음과 같다. 1) 당시 일본의 과학교육 진흥책의 영향으로 과학교과용 특별교실은 필수시설들 중의 하나로 계획되었으며 이화학교실과 박물교실을 구분하여 설치하는 것이 일반적이었다. 2) 이들 교실에는 준비실, 기계실, 표본실 같은 부속실이 설치되며 이론 강의 및 실험시연을 위한 계단교실이 별도로 설치되기도 하였다. 3) 과학 교과 특별교실은 설비 및 안전상의 이유로 다른 시설들과 이격하여 계획하는 경향이 강했다. 4) 예술교과용 특별교실 중 도화실은 남녀학교 모두 설치 빈도가 높은 편이나 음악실의 경우 여학교에서는 특별한 건축 계획적 고려 하에 만들어진데 비해 남학교에서는 설치에 소극적이었던 것으로 보인다. 5) 가사교과용 특별교실은 여학교에서는 남학교의 과학교과 특별교실만큼 비중이 있는 시설로 계획되었다. 6) 기타 교과용 특별교실로 한국인에 대한 실업교육 위주의 차별적 교육정책을 상징했던 수공실이 설립년도가 빠른 한국인 학교들에서 계획되었으며 일반적이지는 않지만 일부 일본인 학교에 지리역사교실이 계획되기도 하였다. 이러한 특성들은 관립 중등학교에 한정된 것이기는 하지만 특별교실이 일반화되지 않았던 당시의 교육시설 상황을 고려하면 국내 학교 건축에 특별교실이 이입되었던 초기 양상들을 보여주는 한 단면이라고 할 수 있을 것이다.

• 한국입자에어로졸학회지
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• 제15권2호
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• pp.79-90
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• 2019

It is important to control fine particles in children care centers, elementary schools, elderly care facilities and so on where vulnerable children and the aged stay during most of their time. This study has investigated $PM_{2.5}$ and $PM_{10}$ concentrations in two classrooms equipped with an air cleaner and two air cleaners, respectively and they were compared to those in a classroom without an air cleaner as well as those outdoors. Eight air cleaners which have various clean air delivery rates (CADRs) between 9.9 and $21.3m^3/min$ were tested in classrooms in two elementary schools in Seoul. Average $PM_{2.5}$ and $PM_{10}$ were $7.3{\pm}0.7$ and $45.5{\pm}4.1{\mu}g/m^3$ in classrooms equipped with an air cleaner and $4.2{\pm}0.6$ and $24.6{\pm}2.5{\mu}g/m^3$ in classrooms with two air cleaners, whereas they were $22.1{\pm}2.6$ and $109.1{\pm}9.6{\mu}g/m^3$ in classrooms without an air cleaner and $36.9{\pm}5.1$ and $74.1{\pm}10.6{\mu}g/m^3$ outdoors, respectively. $PM_{2.5}$ in classrooms could be reduced effectively by using an air cleaner or two air cleaners, because $PM_{2.5}$ was mainly infiltrated from outdoors, however $PM_{10}$ could not because $PM_{10}$ was mainly caused indoors by students' activities. Air cleaners were more effective for removal of $PM_{2.5}$ and $PM_{10}$ in classrooms with a high airtightness than those in classrooms with a relatively low one. Average $CO_2$ in classrooms was about 1500 to 2000 ppm for class hours dependent on the student number per a classroom, which was about 1.5 to 2 times higher than the standard, regardless of the use of air cleaner.