• Journal of the Korean Data and Information Science Society
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• v.20 no.5
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• pp.857-867
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• 2009

The purpose of this paper is to suggest the methods of forecasting for the number of the elementary, middle and high-school student based on the proportion of promotion until 2026 year. The suggested methods are the proportion of promotion, mov baseverage, Holt-W bters model, SARIMA, regression fit. As the result, the abilities of forecasting by the method of moving average are better than those of other methods.

• The Journal of Sustainable Design and Educational Environment Research
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• v.19 no.4
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• pp.15-25
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• 2020

The results of this research and analysis are as follows: First, it was possible to subdivide the increasing and decreasing trends of regional student numbers in Seoul into a total of 57 types by discovering additional 22 types through the Seoul City survey analysis of the 35 existing types, and it was found that there were 14 types that had not appeared in Seoul contrary to the nationwide appearance. Second, among the 43 types in Seoul, the most long-term decline types accounted for 71.3% in the order of A6 type> A8 type> A17 type> A2 type> A1 type> A18 type. The most long-term type of a new school was Nl4 type. Third, among the long-term decline types, there were many types that prevented the decrease in the number of students, such as the type A2, type A3, type A13, and type A15, in Gangnam School District 8, whereas in the non-Gangnam area, there were many other types of student decrease. The difference in distributions of types among regions was clearly seen. Therefore, in Seoul, which is mostly an urban area, it is necessary to carefully investigate and analyze the regional characteristics of each of the 11 Education Support Offices and to establish a school accommodation policy that reflects these results.

• 한국정보교육학회:학술대회논문집
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• 2009.08a
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• pp.269-274
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• 2009

차세대 기술과 접목된 교육용콘텐츠의 다양한 연구가 진행되고 있다. 현재 디지털교과서가 연구학교를 중심으로 실험 및 적용 단계에 있으나 학습내용이 고정적이고 제한된 콘텐츠만을 제공하기 때문에 학생들의 흥미와 몰입감 및 학습효과에서 부족한 부분이 많다. 이를 해결하기 위해서는 증감형 콘텐츠를 설계하여 학생들의 흥미와 몰입감 및 상호작용을 높여야 한다고 본다. 이에 본 논문에서는 증강현실 기술을 기반으로 하여 태블릿 기반의 디지털교과서 콘텐츠로 학습을 할 때 관찰하기 어려운 가상의 정보 제공 및 부가적인 정보를 활용하며 상황 인지를 통해 사용자의 상황에 적합한 가이드라인이나 부가 정보를 제공받을 수 있는 차세대 교육용 콘텐츠를 설계해 보고자 한다. 본 연구의 결과는 향후 디지털교과서 적용 시 효과적인 개발방안이 될 것이다.

• The Journal of Sustainable Design and Educational Environment Research
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• v.18 no.1
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• pp.27-37
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• 2019

This study investigated and analyzed the rise and fall trend of enrolled students during the recent 30 years with the subject of 607 elementary schools in 11 Education Support Centers (25 Gu-districts) in Seoul to provide the basic data related to establishing the school accommodation plan of the Seoul Education Office. In particular, the study focuses on the 53 small schools in Seoul and examines whether a correlation exists between the 8 factors of the school accommodation plan and the increasing and decreasing of enrolled student numbers. First, 'school establishment policy' should not be a short-term therapy but a long-term and predictable sustainable policy. Second, among the eight factors, there seems to be a very high correlation between the 'aged low-rise house districts' and 'spatially isolated areas'. Third, 'close-packed apartment complexes' and 'rental apartment complexes' are also highly correlated. Fourth, the planning factors such as 'joint school districts, the reconstruction of apartment complexes and the connection to commercial districts' seem to be correlated to some degree. Therefore, further studies are needed to overcome these problems.

• The Journal of Sustainable Design and Educational Environment Research
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• v.17 no.1
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• pp.23-32
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• 2018

The results of the survey on the number of students enrolled in 1,337 elementary schools in the 29 provinces nationwide are as follows. First, in the first Newtowns, the number of enrolled students is 601~750. In particular, 4 small schools (4.2%) showed 300 small sized schools. Second, the number of schools in the metropolitan area is 451~750, and the number of schools under 300 students is 16, accounting for 5.6% of the total. Third, the Chungcheong Province is the largest in the 751~900 people, but relatively fewer than 150 students account for more than 13% of the total. Fourth, Yeongnam region has the largest number of enrolled students in the 301 ~ 450 classrooms, and the number of schools with 150 under 50 schools is 300 and the number of under schools is 118 with 24.3%. Fifth, Honam area is the most in 601 ~ 750 people, but the number of schools under 150 students is 27 and the number of under 300 schools is 23.5%. In particular, small schools in Yeongnam region and Honam area are more than twice as high as other areas. Additional follow-up studies are needed for other cities.

• Journal of Preventive Medicine and Public Health
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• v.33 no.1
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• pp.1-9
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• 2000

Objectives : This study was carried out to investigate the sources of infection and modes of transmission of an outbreak of shigellosis that occurred among pupils of 'M' primary school and residents near the school in Kyongju from Sept. 24 to Oct. 24, 1998. Methods : The subjects who completed a questionnaire and a rectal swab for microbiologic examinations were 1,534 persons (781 males, 753 females), including 469 pupils of 'M' primary school (268 males, 201 females). Bacteriological examinations of underground water and simple piped water were done. Results : The attack rate of diarrhea was 28.7% in the subjects from Sept.24 to Oct. 24, 1958. There was no difference in attack rate of diarrhea by gender, but it was significantly higher in the pupils of 'M' primary school than others (p<0.01). The attack rate of diarrhea by resident areas was no different to the pupils of 'M' primary school, but was significantly higher in the residents of Mohwa 2 Ri except pupils that 'M' primary school is located in (p<0.01). The distribution of date of onset revealed the exposure date to be Sept, 22 and 23 in consideration of incubation periods and common source outbreak followed propagative spread in the epidemic curve. The major characteristics of diarrhea were watery (89.1%) in nature, $1\sim3$ days (72.5%) in duration, $2\sim3$ times (63.9%) in frequency. The clinical symptoms among the diarrheal cases included abdominal pain (74.1%), fever (56.4%), headache (55.9%), chill (40.4%) and tenesmus (31.4%). Conclusions : The source of infection was estimated to be contaminated underground water and simple piped water caused by leakage from the cess pool. It is highly necessary that the management of drinking water and cess fools should be done thoroughly.

• Journal of Digital Convergence
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• v.12 no.6
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• pp.625-635
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• 2014

The purposes of the study is to examine the relationship between developmental assets, stress and risk behaviors of university students. The subject of the study is 1023 university students. Questionnaire organized by scales of developmental assets, stress and risk behaviors was used. The major findings were as follows; First, internal assets made direct effects on stress and risk behaviors. External assets made direct effects on stress. Second, mediating effects of stress were statistically significant in relations between developmental assets and risk behaviors. External assets were complete mediating effects by making effects indirectly on risk behaviors through the stress. Internal assets showed partial mediating effects.

• The Journal of Korean Association of Computer Education
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• v.23 no.3
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• pp.59-64
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• 2020

This study conducted a 15-week experiment on 236 students who took a major in engineering to find out the impact of learning through flipped learning on their academic performance. Previous flipped learning studies have largely been tested on learning motivation or learning satisfaction through questionnaires, and few have compared academic performance differences. Therefore, it is necessary to identify the increase and decrease in academic performance in the flipped learning classroom. Studies have shown significant differences that is a big difference between the academic performance of the experimental group appling flipped learning and the control group appling traditional lecture-style classes, and the academic performance of the experimental group was higher than that of the control group. This can be said to have a positive effect on academic performance. Therefore, it is hoped that the flip learning method will be expanded in all curriculums.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.29 no.4B
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• pp.385-396
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• 2009

Non-household unit water use for each type of business are estimated in this study. The business types are subdivided into forty based on nine categories by the national industrial standard classification, such as office, commerce, public bathing, public water use etc. Correlation analysis and analysis of variance (ANOVA) are applied to obtain statistical characteristics between industrial water use data, surveyed in six cities including Nonsan, Seosan and the National Statistical Bureau and site area, employees number etc. for each detailed business area. As the proposed non-household unit water uses are compared with five surveyed data in USA, it is shown that almost of water uses per unit area are less than those in USA. Non-household unit water uses of 25% cumulative probability water use recommended as efficiency benchmarks among surveyed data in Korea are also less than those in USA. Especially, in the case of water use in school, the average and the range are similar results showing water use range between 0.4 and 6.2 ($l/m^2/day$) as liter per capita day per an unit area, also water use range between 11.9 to 64.0 (l/student/day) as liter per capita day per a person. From the result of correlation analysis with internal and exogenous affecting factors on non-household water use, it can be concluded that a unit area is most appropriate factor as a standard of non-household unit water use. In case of water use in educational business, the number of students including staffs is more correlated than site ares with water use for the settled water consumption tendency. Although the increase and decrease of educational institutes, retail/wholesale store and restaurants are shown remarkable by the temperature as a representative factor, low correlations are shown in water use fluctuation in lodging house and hospital.

• Journal of Oral Medicine and Pain
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• v.31 no.1
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• pp.59-67
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• 2006

There exist patients complaining speech problem due to dysesthesia or anesthesia following dental surgical procedure accompanied by local anesthesia in clinical setting. However, it is not clear whether sensory problems in orofacial region may have an influence on motor speech abilities. The purpose of this study was to investigate whether transitory sensory impairment of mandibular nerve by local anesthesia may influence on the motor speech abilities and thus to evaluate possibility of distorted motor speech abilities due to dysesthesia of mandibular nerve. The subjects in this study consisted of 7 men and 3 women, whose right inferior alveolar nerve, lingual nerve and long buccal nerve was anesthetized by 1.8 mL lidocaine containing 1:100,000 epinephrine. All the subjects were instructed to self estimate degree of anesthesia on the affected region and speech discomfort with VAS before anesthesia, 30 seconds, 30, 60, 90, 120 and 150 minutes after anesthesia. In order to evaluate speech problems objectively, the words and sentences suggested to be read for testing speech speed, diadochokinetic rate, intonation, tremor and articulation were recorded according to the time and evaluated using a Computerized Speech $Lab^{(R)}$. Articulation was evaluated by a speech language clinician. The results of this study indicated that subjective discomfort of speech and depth of anesthesia was increased with time until 60 minutes after anesthesia and then decreased. Degree of subjective speech discomfort was correlated with depth of anesthesia self estimated by each subject. On the while, there was no significant difference in objective assessment item including speech speed, diadochokinetic rate, intonation and tremor. There was no change in articulation related with anesthesia. Based on the results of this study, it is not thought that sensory impairment of unilateral mandibular nerve deteriorates motor speech abilities in spite of individual's complaint of speech discomfort.