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김혜경,이정운,박강원,문옥륜,Kim, Hye-Kyung,Lee, Jeon-Un,Park, Kang-Won,Moon, Ok-Ryun 대한예방의학회 1992 Journal of Preventive Medicine and Public Health Vol.25 No.3
The purpose of this study is to estimate cesarean section rate in Korea and analyze the socioeconomic variables and health resources which affect regional variation in the rate. Samples were drawn from the record of vaginal and cesarean section deliveries based upon insurance claim bills which have been submitted to the National Federation of Medical Insurance for the first three months, January through March, 1991. The results are obtained as follows : It was found that. cesarean section rate was increasing rapidly up to 23.1% in 1991. Cesarean section per 10 thousand insured people was 4.8 and the number of cesarean section per 10 thousand insured eligible($15{\sim}49$ years old) female was 7.6. The fee for normal delivery was 109,489 won and that for cesarean section was 390,024 won. The average days of hospitalization in normal delivery was 2.3 days, and those in cesarean section was 7.6 days. On the average cesarean section has a longer of stay as much as by 4.3 days and cost 3.6 times more than normal deliveries. Cesarean section rates vary among medical facilities 19.8% at clinics 37.6% in small-scale hospitals, and 29.1% in general hospitals. The regional variation of cesarean section rates was also fairly prominent. The South Cheju Gun has the highest rate of cesarean section, 56.2%. Meanwhile no cesarean section cases has been reported in Sunchang Gun during the period of this study. The variation is noted among provinces. The rate for Cheju province has been 3.4 times higher than that for Chunnam. The number of cesarean section per 10 thousand insured people vary greatly among regions, too. This study has found that there exists significant regional variations among various geographic units in terms of average length of stay, average cost, number of obsretricians and number of beds. Multiple regression analysis was done to identify factors explaining the regional variance of various cesarean section rates : In the urban areas, no significant explaining variables were noted except the number of beds for the dependent variable of cesarean section cases per 10 thousand insured eligible females. The smaller the number of bed, the more cases of cesarean section was noted for an urban area. The is mostly because the rate of cesarean section is higher in medium-size hospitals than in large general hospitals. In the rural areas, the factor of education has been found significant for all three deplendent variables. The higher the educational level, the rate of cesarean section is most likely to rise. An income variable measured by the amount of monthly insurance contribution has been identified a powerful predictor in explaining the valiance of cesarean section rates. The same has been noted for the number of obstetricians. Similar findings are observed for the country as a whole. The income level has veen found as the most powerful explaining factor in the regional variance of cesarean section rates. In general the rate is higher in the urban areas, and lower in the area with more small hospitals. As this is the initial attempt to identify the factors relevant to the regional difference in the rates of cesarean section, more elaborated study is urgently required.
A Study on the Analysis of Museum Gamification Keywords Using Social Media Big Data
Jeon, Se-won,Choi, YounHee,Moon, Seok-Jae,Yoo, Kyung-Mi,Ryu, Gi-Hwan The Institute of Internet 2021 International Journal of Internet, Broadcasting an Vol.13 No.4
The purpose of this paper is to identify keywords related to museums, gamification, and visitors, and provide basic data that the museum market can be expanded by using gamification. That used to collect data for blogs, news, cafes, intellectuals, academic information by Naver and Daum which is Web documents in Korea, and Google Web, news, Facebook, Baidu, YouTube, and Twitter for analysis. For the data analysis period, a total of one year of data was selected from April 16, 2020 to April 16, 2021, after Corona. For data collection and analysis, the frequency and matrix of keywords were extracted through Textom, a social matrix site, and the relationship and connection centrality between keywords were analysed and visualized using the Netdraw function in the UCINET6 program. In addition, We performed CONCOR analysis to derive clusters for similar keywords. As a result, a total of 25,761 cases that analysing the keywords of museum, gamification and visitors were derived. This shows that the museum, gamification, and spectators are related to each other. Furthermore, if a system using gamification is developed for museums, the museum market can be developed.
Kyung-Won Jeon,Yong-Jae Kim,Sang-Yong Jung 한국자기학회 2013 Journal of Magnetics Vol.18 No.2
This paper deals with torque harmonic characteristics and its reduction design of induction motors for electric vehicle (EV) propulsion. For calculating the stator harmonic flux of squirrel-cage induction motor, the numerical methods have been employed on the structural configuration design of stator and rotor teeth. In particular, torque ripples including spatial harmonics are obtained by Finite Element Method (FEM), and their individual harmonic components are identified with Fast Fourier Transform (FFT). In this paper, design modification on the teeth surface gives rise to the significant reduction of torque ripples including spatial torque harmonics, which have been obtained with FEM.
Jeon, Won-Kyung,Yoo, Bo-Kyung,Ahn, Sang-Young,Lee, Ju-Hyun,Ahn, Sang-Woo,Ko, Byoung-Seob The Society of Korean Medicine 2009 대한한의학회지 Vol.30 No.6
Objectives: Formulas for treatment of yin or yang deficiency conditions have been commonly used in traditional Korean medicine. The aim of this study is to examine the possible inhibitory effects of yin- or yang-tonifying formulas on in vivo anti-platelet activity and in vivo anti-thrombotic activity. Methods: We tested the effects of 26 types of yin- or yang-tonifying formulas on platelet aggregation induced by collagen in human whole blood using the impedance method of aggregometry and accessed a biomarker of platelet activation using thromboxane $B_2$ immunoassay. We also tested the anti-thrombotic effects of effective candidates on experimental models of thrombosis in mice. Results: 3 types of yin-tonifying formulas and 3 types of yin-yang-tonifying formulas were selected to be the most effective candidates (p<0.01). Also, through in vivo study, the antithrombotic activities of Igyeong-tang, Gamisipjeondaebo-tang, and Gamisoyo-san-treated groups, with recovery rate of 60, 50, and 45.45%, respectively, were observed to be higher than those of the control group (saline, 36.8%) in mouse acute thrombosis. Conclusion: These results show that yin-tonifying formulas are more effective in anti-platelet and anti-thrombotic activity than yang-tonifying formulas.
Jeon, Sang-Ok,Hwang, Hee-Jin,Oh, Dong-Ho,Seo, Jo-Eun,Chun, Kyeung-Hwa,Hong, Sun-Mi,Kim, Min-Ju,Kim, Won-Chul,Park, Min-Sun,Yoon, Chae-Ha,Min, Kyung-Hyun,Suh, Chang-Woo,Lee, Sangkil Informa UK, Ltd. 2012 Journal of microencapsulation Vol.29 No.3
<P>We encapsulated recombinant human epidermal growth factor (rhEGF) into nano-liposomes (NLs) system for topical delivery. The rhEGF-loaded NLs were prepared using a high pressure homogenization method. Morphology and overall particle distribution of NLs were investigated using transmission electron microscopy (TEM) and high resolution microscope (CytoViva™). Particle size, zeta (<I>ζ</I>) potential and encapsulation efficiency were measured and the percutaneous delivery of NLs was evaluated using Franz diffusion cells and immunofluorescence confocal laser scanning microscopy (CLSM). The mean particle size, zeta potential and encapsulation efficiency of the NLs were 155.57 ± 2.59 nm, −57.92 ± 4.35 mV and 9.00 ± 0.39%%, respectively. TEM and microscopic analysis showed spherical, very even-sized vesicles approximately 150 nm. The skin permeation and localization of rhEGF were enhanced by NLs. CLSM image analysis provided that the NLs enhanced the permeation and localization of rhEGF in rat skin by facilitating entry through pores of skin.</P>
Won Kyung Jeon,Ji Sun Hwang,Ho Keun Kwon,Chung Gu Lee,Sin Hyeog Im,Byoung Seob Ko 한국응용생명화학회 2009 Applied Biological Chemistry (Appl Biol Chem) Vol.52 No.6
To evaluate immunomodulators from herbal medicines that affect the expression of IL-10 and TNF-α, we developed a cell-based high throughput screening system and tested 17 kinds of herbal medicine. We found that extracts of Coptidis Rhizoma can be used to s
Kyung Soo Jeon,Hee Seung Yang,Hea-Eun Yang,Ah Rom Song,Ji Won Kwon 대한연하장애학회 2019 대한연하장애학회지 Vol.9 No.1
Objective: This study aimed to investigate the difference in micronutrient levels between oral feeding and enteralfeeding in chronic stroke patients to assess the risks of enteral feeding. Methods: Patients with chronic stroke who were admitted to the Department of Rehabilitation Medicine betweenJanuary 2011 and June 2012 were enrolled. The serum concentrations of iron, copper, zinc, folate, and vitamin B12,as well as the absolute CD4 and CD8 lymphocyte counts, were assessed. Results: Of the 73 patients enrolled in this study, 50 were fed orally, while the other 23 were fed through a percutaneousendoscopic gastrostomy (PEG) or nasogastric (NG) tube. The serum concentrations of vitamin B12 and folatewere significantly higher in the enteral feeding group than in the oral feeding group. However, the serum concentrationof zinc was significantly lower in the enteral feeding group. Conclusion: There is little difference between enteral feeding and oral feeding in terms of micronutrient provisionexcept that the serum concentration of zinc in the enteral feeding group was significantly lower than that in the oralfeeding group. Clinicians should recognize that chronic stroke patients who require tube feeding have a risk ofmicronutrient deficiency. Early detection of malnutrition and micronutrient deficiency is important for providing thenecessary nutrients.
Acupuncture Reduces Symptoms of Dry Eye Syndrome: A Preliminary Observational Study
Jeon, Ju-Hyun,Shin, Mi-Suk,Lee, Myeong Soo,Jeong, So-Young,Kang, Kyung Won,Kim, Young-Il,Choi, Sun-Mi Mary Ann Liebert 2010 Journal of Alternative & Complementary Medicine Vol.16 No.12
<P>The aim of this study was to evaluate the effect of acupuncture treatment on dry eye syndrome.</P>