• Journal for History of Mathematics
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• v.35 no.2
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• pp.59-70
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• 2022

In this paper, we review some aspects of geometry for charged rotating black holes which are formed from the gravitational collapse of a massive spinning star with electric charge. We also introduce the computation of entropy for black holes from loop quantum gravity which is a quantum theory of gravity based on Einstein's theory of general relativity.

• Journal of architectural history
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• v.23 no.2
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• pp.53-64
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• 2014

During the Joseon Dynasty, Injeongjeon area at Changdeokgung Palace was a core space in which major state affairs took place. Since founded in 1405, the Injeongjeon area's spatial composition has been changed while it was repeatedly burned down and rebuilt several times. However, despite many studies and researches on the Chandeokgung Palace and the Injeongjeon area, the changes of the area in the 20th century have not been examined thoroughly. This study attempts to find out the procedure and purposes of the remodeling of the Injeongjeon area in 1908. It is possible to presume that the motif of this remodeling construction, worked out by the Residency-General, was to transform the area similar to Ekkensho or Audience Hall area at Meiji Palace regarding the following facts: only Japaneses' participation in the construction, renaming the area as Alhyunso (Ekkensho), and involvement of Ito Hirobumi. Comparing plans of the remodeled Injeongjeon area at the Chandeokgung Palace with the Ekkensho area at the Meiji Palace, we can confirm this presumption and suggest the possibility that the Residency-General wanted to reduce the majesty and power of the Joseon Dynasty's Palace by this remodeling.

• Journal of Home Health Care Nursing
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• v.23 no.2
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• pp.139-146
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• 2016

Purpose: This research seeks to identify differences between general characteristics, disease-related characteristics, glycated hemoglobin (HbAlc) levels, and aspects of chronic complications of diabetes mellitus in type 2 diabetes. Methods: This research was conducted from the 1st to the 15th of February in 2016, on 263 in patients. Patients' electronic medical records were used to identify their general characteristics, disease-related characteristics, HbAlc, and chronic diabetic complications. Chi-square test, ANOVA, ANCOVA, and the Cochran-Mantel-Haenszel test were used for data analysis. Results: Statistical significance was observed for general characteristics, based on smoking status, such as age, and education level; disease-related characteristics differed according to the duration of diabetes. Smoking status did not differ according to HbAlc level. In term of chronic diabetic complications, statistically significance was observed for diabetic nephropathy, based on smoking status. Conclusion: Patients who had a history of smoking, but were not currently smoking, were likely to display higher HbAlc levels and diabetic nephropathy. Therefore, there is need for regular checkups for diabetic complications among patients with a history of smoking and it is important to emphasize smoking cessation.

• Journal of the Korean Society of Costume
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• v.64 no.1
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• pp.106-122
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• 2014

This study is based on the official Chinese history of the ancient Korean(中國正史朝鮮傳) clothing and ornaments, and also tries to discover, study, and adjust the system of the ancient Korean clothing and ornaments. Ancient Korea has very poor official records of its clothing and ornaments. Therefore, this study had no choice but to rely on the official Chinese history to cover for the lack of resources. The official Chinese history documents are not only important for studying ancient Korean history, but also important for studying about the ancient Korean clothing and ornaments. This research selected historical documents about the ancient Korean clothing and ornaments from fifteen different Chinese dynasties' official documents, and then systematically classified the documents in order to compare them. All these processes confirmed the following subjects. In regards to the Kwan(冠: general hat), the hat types included Check, Byun(弁), Jeol-poong(折風), Jowoo-Kwan(鳥羽冠), So-gol(蘇骨), and Na-kwan(羅冠). These Kwan(冠) were influenced from Chinese clothing and ornaments. Gold and silver decorations on the Kwan(冠) were influenced from the Scythai culture. The feather decorations on the hat were residual of the bird worshiping culture or the hunting lifestyle. These things show that the ancient Korean clothing and ornaments originated the clothing and ornaments from the North. But the use of Jo-woo(bird feather) was common around the globe in many ways during the ancient times, regardless of area and period. The official Chinese history describes men's hair style as Choo-gyul (椎結) or sometimes pronounced, Choo-gyul(椎結). These seem to describe the topknot. Women had various types of hair styles such as Yu-byun-bal-su-hu (wear women's hair in a braid). The official Chinese history show that the ancient Korean clothing and ornaments originated the clothing and ornaments from the north. The ancient Korean clothing and ornaments influenced and were influenced by its neighboring countries.

• The Journal of the Korea institute of electronic communication sciences
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• v.8 no.5
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• pp.779-784
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• 2013

This study aims to look into the relationship between the parents's family history of diabetes and factors of metabolic syndrome focusing on Korean adult males with a family history of diabetes. The data used for the study was collected from the 2010 Korea National Health and Nutrition Examination Survey. The subjects of the study totaled 2,045. For statistical analysis, double sampling general linear regression was used and the statistical significance was p<0.05. As a result of a multi-variate analysis with general characteristics corrected, the following was discovered: when fathers had a family history of diabetes, girth increased by 2.5cm, fasting blood sugar(glu) increased by 9.6mg/dL and neutral fat increased by 41.6mg/dL When the mothers had a family history of diabetes, girth increased by 2.4cm, fasting blood sugar(glu) increased by 15.4mg/dL, and the neutral fat increased by 27.2mg/dL. In conclusion, when the fathers had a family history of diabetes, their children's girth, fasting blood sugar and neutral fat were significantly higher, and when the mothers had a family history of diabetes, their children's girth and fasting blood sugar were significantly higher.

• Education of Primary School Mathematics
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• v.10 no.1 s.19
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• pp.57-70
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• 2007

This study is aimed at the improvement of the teaching mathematics via the use of the mathematical history based on the learning stages which are understanding the problem, seeking after and solving the problem, application and development, and understanding the homeworks. General questions of this study are as follows according to the purpose of this study: First, we develop materials to use the teaching and learning stages which are understanding the problem, seeking after and solving the problem, application and development, and understanding the homeworks. Second, we search the effective methods for using materials which are developed in this study. Third, we apply materials to the teaching and learning mathematics. To answer the problems, 1 class students of the 4th grade in Gwangju participated in this study. Teaching and learning which uses mathematical history based on the learning stages is performed. The following results were obtained in this research. First, the teaching and learning using materials which is related to mathematical history is effective in improvement of students' mathematical ability. Second, the teaching and learning using material which is related to mathematics history is effective in improvement of students' mathematical attitude. In special, mathematical attitude of students who are involved in learning using materials which is related to mathematical history is more positive than that of general students using traditional teaching methods. Lastly, generalization of newly developed materials should be done to get more development and upgrade.

• Journal of architectural history
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• v.8 no.4 s.21
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• pp.39-62
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• 1999

Basic concept of this study is that architectural form as a material at present has meaning for the dweller's life on the past historical plane. Main method to recover history is ethnographic interview to dwellers. Secondary method is to analyze ancestors' writings, buildings in the background of the family photos, and past drawings and then to relate them with architectural form at present. Taxonomy is a starting point: general name of the building by outside researcher is quite different from it by inside dwellers. 'Haengrang-chae', servant quarter, has never been used for servants. Function of the haengrang went outside thatched houses at the front village. Firsthand observation or simple analyses as results of several precedent research are reexamined and criticized through this study. The mansion has moaning when we synthesize with the site location based on farming land and tenant farmer, and decline of the Kyongpo Lake. Territoriality of the mansion is reinterpreted to 'In-Out Structure' by Yin-Yang thinking, Dwellers extend buildings gradually to outside village, surrounding rear hills, the lake, DongHae Sea, and finally goes to imaginative Taoist heaven beyond real nature through the literary life. Confucius principle, known to govern upper class house at Yi Dynasty also affect general composition of the buildings: perpetuation of the family by ancestor worship, elder dominance and male dominance, fraternity love in the extended family, charity display by reception of guests, Taoist scholarly life harmonized with nature. However, the study of the particular life and usage of the dwellers reinforces or corrects general supposition of precedent researches. Unique shape of the house has been formed by convenience of the dwellers' life style, early modernized free thought over the rigid Confucius design principle, and female power in male dominant society.

• Journal of The Korean Dental Society of Anesthesiology
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• v.14 no.4
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• pp.237-241
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• 2014

Acquired Immune Deficiency Syndrome is the state which develops after complications with the infection from HIV. Irrespective of their state, all HIV infections have infectivity. According to a 2013 U.N. AIDS global report, the number of reported newly infected with HIV is constantly falling, while that of Korea has been increasing over recent years and it surpassed 10,000 in 2013. This phenomenon might be attributed to the unusualness of the blood test for early detection of HIV infection. From this fact, we can assume that we have strong possibilities for encounters with infections in the office. But many misconceptions about the disease makes patients try to hide their medical history, which can lead to a nationwide spread of the infection without proper management. Even though it may be difficult to take care of HIV patients in smaller dental offices, large scale hospitals have the means to arrange protocols to treat them. We present a case about dental treatment of a patient with AIDS that has a history of cerebral infarction and hepatitis type B under general anesthesia. The purpose of this case report was to discuss the special considerations of dental care for patients with HIV.

• Journal of architectural history
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• v.27 no.2
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• pp.125-138
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• 2018

During the 1950s, the North Koreans rebuilt their capital-Pyongyang-as a modern city under the principle of Soviet urban design. One North Korean architect, Kim Jung-hee, has been widely credited since the late 1980s as the master architect of the General Plan of the city's reconstruction. While Kim Jung-hee played a crucial role in its reconstruction, his heroic image as the founding architect of Pyongyang is considerably attributed to North Korea's mythical narratives rather than his historical activities. This paper argues that Pyongyang's postwar urban design was not a work made by a single actor, Kim Jung-hee; rather, it was a long-term collaborative project in which a team of North Korean architects and Soviet technical advisors took their respective roles. Beginning in the late 1980s, North Korea, which had been struggling with economic decline and an increasing sense of lagging behind in its rivalry with its Southern counterpart, used heroic narratives during the 1950s' postwar reconstruction period as an important propaganda tool for their regime. In this mythical narrative of Pyongyang's reconstruction, massive economic and technical aid from other communist countries has often disappeared, and the memory of the architects who contributed greatly to the reconstruction but later purged in North Korea have also completely vanished. Kim Jung-hee, meanwhile, remained in this epic as the founding architect who rebuilt the city in faithful accordance with the leadership of Kim Il Sung.

• Journal of Korean Academy of Fundamentals of Nursing
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• v.8 no.1
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• pp.7-23
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• 2001

This study was done to provide basic data on prevention of breast cancer by identifying and analyzing risk factors for breast cancer in Korean women. The data were collected from three hospitals. The data from Jan. 1995 to Dec. 1997 was based on the patient recordings and personal contacts if possible. Data from 1998 to 1999 was collected from 280 inpatients and outpatients diagnosed as breast cancer. From this data, information about the risk factors of breast cancer could be acquired. The factors are scaled according to the degree of risk. Menstrual history, obstetrical history, family history. lactation period, life style were given 5 point, and body mass index was given 4 point. Using one-way ANOVA. the most important risk factors were identified and analyzed by multiple regression. The conclusion of this study are as follows : General factors which would show an effect on the results of the multiple regression included risk factors such as menstrual history, obstetrical history, lactation period, family history, and life style factors including mortal state, monthly income, educational level, job and age. Family history(R=0.481) was found to be the highest risk factor(23.1%) affecting breast cancer risk. The next factors were dying hair(R=0.603), drinking(R=0.846), body mass index(R=0.885), smoking(R=0.916), age of menopause(R=0.937), pregnancy age of first full-term(R=0.957), eating vegetable(R=0.980) and the number of full term pregnancies in that order. The sum total(R=0.986) of all the above factors accounted for 97.3% of the risk of breast cancer for Korean women. In conclusion, it was found that family history and dyeing hair were the highest risk factors for breast cancer. It is recommended that those with a family history of breast cancer should have regular breast examinations, and those who often dye their hair should reconsider this practice.