• Journal for History of Mathematics
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• v.32 no.2
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• pp.79-93
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• 2019

Choi Yoon Sik is a person who can not be omitted when discussing the history of mathematics in Korea. He is a mathematician who led Korean mathematics community after liberation from Japan. However, he took interests in mathematics education in middle and high school also. Choi Yoon Sik should be remembered as a leading person not only in the history of mathematics but also in the history of mathematics education in Korea. Choi Yoon Sik thought that histo-genetic principle, intuitive principle, and practical principle are important in mathematics education by help of Okura Kinnosuke's view, with hope to reform the mathematics education in Korea. He also argued that mathematics has educational values.

• Korean Journal of Veterinary Research
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• v.40 no.3
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• pp.451-461
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• 2000

The locus coeruleus(LG) is known to be observed a sexual dimorphism in rat CNS. LC is the largest collections of norepinephrine(NE)-containing neurons in the mammalian brain. Especially in rat, all LC neurons contained NE unlike other mammalians, so that specific reactions were found in the tyrosine-hydroxylase(TH) immunoreactive neurons. Sexual dimorphism of rat LC has affected by genes before sex hormone appeared, thereafter affected by sex hormones. In these day, many scientists founded morphological differences between male and female LC morphology, but differences of entire structure was not founded. Thus we investigated sex differences of the LC neuron's morphology in rat by three-dimensional(3-D) reconstruction using Confocal laser scanning microscopy(CLSM). We reported that neuron's shape was relatively-large multipolar neurons and neuron's processes in dorsal LC proceeded to ventral direction in the male and female rat. Male had a longer anterior-posterior length than female had in dorsal LC. In addition to middle-LC, male rat's LC had a more thicker posterior region but had not viewed in a previous study. In reverse, female rat's LC had a thicker anterior region like a previous study. This results using 3-D reconstruction by CLSM showed that the male's LC was more wide-ranging than female's relatively.

• Journal of Oral Medicine and Pain
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• v.42 no.4
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• pp.89-101
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• 2017

Purpose: The purpose of this study is to investigate the prevalence of temporomandibular disorders (TMDs) in children and adolescents, their characteristic contributing factors, the characteristic features of symptoms and symptoms, and the response to treatment. Methods: We studied the researches, that were the results of the searches for words such as temporomandibular disorder, TMD, children, adolescents, and juvenile through PubMed and DBpia. Results: According to a study conducted in Busan, the ratio of adolescents increased from 18.3% to 21% in 2008 compared to 2000, and the proportion of boys increased from 38.58% to 45.38%. One of the characteristic contributing factors for adolescents is the macrotrauma such as jaw trauma, vehicle accidents, sports, physical abuse, forceful intubation, and third molar extraction. The second is a microtrauma from parafunctional habit such as bruxism, clenching, hyperextension, wind instrument, and fingernail biting that can cause joint overload, cartilage breakdown, synovial fluid alterations, and other changes within the joint. The diagnosis of TMDs in juvenile adolescents is not significantly different from that of adults. Medical history, clinical examination and radiological examinations are required. Conclusions: In the temporomandibular joint history and assessment, all comprehensive dental history examination is required, including head and neck pain, mandibular dysfunction, previous orofacial trauma, history of present illness with an account of current symptoms. For the treatment and management of temporomandibular arthritis in juvenile adolescents, understanding the characteristics of TMDs in juvenile adolescents and thoroughly analyzing appropriate diagnosis and possible contributing factors through comprehensive history taking & examination, conservative treatment, including fast and active cautions education, will be essential.

• Cross-Cultural Studies
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• v.48
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• pp.107-133
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• 2017

This study compares the history of modern Korean literature written in China with the history of South Korean literature, the history of North Korean literature and the history of national literature, explores aspects of narrative and therefore examines transcultural practice presented in such texts. There have hitherto been approximately 25 works on the history of Korean literature written in China, and 16 of 25 works are on the history of modern Korean literature. Regarding their purpose, the number of pedagogical works outstandingly exceeds the number of research works. In terms of perspective and contents, it can be divided into three categories; one that only embraces the history of South Korean literature, another embracing the history of North Korean literature only and the other embracing the history of South Korean and North Korean literature. This study has selected representative texts from each category and compared recognition and narrative aspects to that of the history of South Korean literature, the history of North Korean literature and the history of Chinese literature. It further examines loci of definitions' transfer and formation as well. As a result, this study reveals valuable understanding of recognition and narration of the history of Korean literature. First, this study offers an introspective attitude, as the history of modern Korean literature accentuates influence of only Western literature, overlooking influence of Chinese literature. Second, this study proposes a new narrative perspective on the history of Unified Korean literature through independent and objective identification of the history of North Korean literature. Last, it emphasizes popularization of literature - aside from pure literary-centrism - and expands possibilities of embracing distinct works relevant to multimedia.

• Advances in pediatric surgery
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• v.12 no.1
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• pp.86-90
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• 2006

History, incidence and associated anormalies of the anorectal malformations were reviewed.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.25 no.3
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• pp.139-163
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• 2014

This research aims to analyze the reciprocal relation between 'history from below' and archives and to set forth the overall tides of records management in England. For the Study, the articles published in the History Workshop Journal were analyzed. They used public records and private records such as newspapers, diaries, letters and oral records. Consequently Various kinds of community archives have recently flourished in England and endeavour is being made to expand the horizon of records management by TNA. This can be assessed as a new sort of soil for the history from below.

• Journal of Science Education
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• v.34 no.2
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• pp.383-395
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• 2010

The purpose of this study was to analyse the teachers' perception about the applying the history of Korean science in elementary science class. To research the educational value and application of the history of Korean Science in Elementary science class, 202 teachers of elementary school were asked to reply the questionnaire of 5-point Likert scale and Elementary science textbooks were analysed. The results of this study indicated that 4th grade science textbooks does not include the history of Korean Science, and a majority of teachers perceived positively about its educational value. 4th grade teachers showed relatively negative perception on the educational value of the history of Korean Science and Elementary school teachers were very positive about including it as the main classes of the curriculum.

• Journal of Korean Elementary Science Education
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• v.28 no.4
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• pp.467-475
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• 2009

This study is to enquire about ideals on combustion and to propose of teaching program using the history a science in '5. Combustion and Extinguishing' unit of elementary school science textbook in 6th grade. For this purpose, investigation questionnaires based on preceding research and science textbook are developed. The reliability of the questionnaires is .784, and the questionnaires are applied to 247 students in T elementary school in Busan. Through the results of the investigation, scientific conceptions existed in some parts. But some misconceptions still existed especially (question 1), substance's changes (question 7), formation process of product (question 13), combustibles among requirements of combustion. The patterns of the misconception are similar to historical misconceptions about combustion. Besides, the discoveries and inventions of combustion have some points about correcting misconceptions. Thus the five step teaching programs on combustion which were applied to history of the science are suggested. The confidence of the developed programs was verified as being 'excellent' by specialists. This program will be applied to think deeply about combustion in elementary school lesson and useful to introduce the history of science.

• The Journal of Korean Medical History
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• v.31 no.2
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• pp.41-52
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• 2018

In this study, we research the tendency of medical text publication by examining the period of the great measles outbreak and the period of the publication of specialized smallpox texts. Using the National Institute of Korean History database for the Annals of Joseon Dynasty, the Daily Records of Royal Secretariat of Joseon Dynasty and Bibyeonsadeunglok, we will compare all records of measles occurrence. Measles and smallpox (Majin in Korean) have similar symptoms and treatment methods. In East Asia, when measles occurred it spread to Joseon and Japan, which are verified by records of the Annals of Joseon Dynasty, the Daily Records of Royal Secretariat of Joseon Dynasty and Bibyeonsadeunglok. The medical books related to measles are; Ryuhasinbang, Majinpyeon, Geupyubang, Yimsinyeokbang, Eulmisinjeon, Majingbang, Jinyeokbang, Magwahoetong, Majingibang, Susengsingam, Hongjinsinbang. Measles and Majin are the same disease. During the period of measles occurrence, measles-related medical books were published, and this relation of measles occurrence and measles-related medical text publication is verified by several national records.

• Journal of the Earthquake Engineering Society of Korea
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• v.27 no.3
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• pp.139-145
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• 2023

It is essential to determine a proper earthquake time history as a seismic load in a seismic design for a critical structure. In the code, a seismic load should satisfy a design response spectrum and include the characteristic of a target fault. The characteristic of a fault can be represented by a definition of a type of possible earthquake time history shape that occurred in a target fault. In this paper, the pseudo-basis function is proposed to be used to construct a specific type of earthquake, including the characteristic of a target fault. The pseudo-basis function is derived from analyzing the earthquake time history of specific fault harmonic wavelet transform. To show the feasibility of this method, the proposed method was applied to the faults causing the Gyeong-Ju ML5.8 and Pohang ML5.3 earthquakes.