• Communications of Mathematical Education
• /
• v.25 no.4
• /
• pp.641-651
• /
• 2011

In 2007, a Taiwanese mathematics historian Wann-Sheng HORNG made a visit to Kyujanggak(the royal library of Joseon Dynasty) in Seoul, Korea. During this visit, he found the Korean math book An abridged version of the Joseon Mathematics (<數學節要>, Su-Hak-Jeol-Yo), which was written by Jong-Hwa AN(9 Nov 1860 - 24 Nov 1924) in 1882. Then he mentioned the possible importance of AN's book in his article in the Journal Kyujanggak(vol. 32, June 2008). Jong-Hwa AN is a Korean scholar, activist of patriotism and enlightenment in the latter era of Joseon Dynasty. He passed the last examination of Joseon Dynasty to become a high government officer in 1894. The father of the modern mathematics education in Korea, Sang-Seol LEE(1870-1917) also passed the same examination with him. It is interesting that government high officer AN and LEE both wrote mathematics books in 19th century. In this talk, we now analyze this mathematics book of Joseon written in 1882.

• Transactions of the Korean Society of Automotive Engineers
• /
• v.18 no.1
• /
• pp.74-85
• /
• 2010

In order to formulate the compounded polypropylene(C-PP) which is suitable to an automotive door trim panel, 9 sorts of properties were measured after manufacturing the C-PP using an extruder and an injection machine with polypropylene(PP), ethylene-octene rubber(EOR) and talc. Mixture design, especially extreme vertices design, in DOE with MINITAB - commercial software was used to analyze the data. The relations between each property and each component, for example, $y=0.00907222x_1+0.00870556x_2+0.0155722x_3$ for specific gravity, were found out by the regression analysis and the variance analysis. The optimized formulation of the C-PP for an automotive door trim panel was acquired at PP(77.6962), EOR(11.0238) and talc(10.2800) by use of the response optimizer(mixture) in MINITAB.

• 기계와재료
• /
• v.2 no.1 s.3
• /
• pp.154-157
• /
• 1990

• Journal of Oriental Neuropsychiatry
• /
• v.23 no.4
• /
• pp.107-122
• /
• 2012

Objectives : The purpose of this study is to examine the general personality profiles of patients who visited an oriental neuropsychiatric clinic and to investigate the specific profiles of patients diagnosed with Hwa-byung. Methods : We analyzed the profiles of 122 patients who completed TCI-RS questionnaire for the purpose of counseling. Patients were divided by sex, age and diagnosis related groups. Scales and subscales of each group were compared by an independent t-test and ANCOVA with SPSS windows 16.0. Types of temperament and character were classified by percentile ranks of the total patients and diagnosis related groups. Results : 1. Total patients were classified as the high harm avoidance type of temperament and of low self-directedness type of character. 2. Male patients showed significantly higher scores on NS, all subscales of NS, P2 and P3 than female patients. HA4 and C5 scores were significantly higher in the female group. Younger patients showed significantly higher scores on NS, all subscales of NS, HA1 and P3. However, older patients had significantly higher scores on SD4, SD5, ST2 and ST3. 3. Between diagnosis related groups, Hwa-byung group had significantly higher scores on RD, ST, SD3 and ST2. However P3 score of non-hwa-byung patients was higher than hwa-byung patients. In typical classification, both hwa-byung and non-hwa-byung groups were classified as the same types as total patients. Conclusions : This study showed that the patients visited an oriental neuropsychiatric clinic and had similar personality with that of general psychiatric disorders. Hwa-byung patients exhibited higher RD and ST scores than other disorders, but they had no typical differences.

• Transactions of the Korean Society of Automotive Engineers
• /
• v.18 no.3
• /
• pp.69-73
• /
• 2010

The melt grafting of unsaturated silanes onto polypropylene (PP) in a twin-screw extruder and crosslinking in hot water were studied to enhance impact strength of polypropylene. The influence of grafting formulations on the melt flow rates of grafted PP and the gel percentages of crosslinked PP was investigated. 3-methacryloylpropyltrimethoxysilane (VMMS) unsaturated silane monomer was used. Benzoyl peroxide, (BPO) and Dicumyl peroxide (DCP) were used as an initiator. When benzoyl peroxide (BPO) was used as an initiator, higher gel percentage and impact strength than those of DCP has been observed. The maximum impact strength was obtained with 0.7 phr of BPO and 2phr of VMMS. The value is 8.7 kgf-cm/cm and it is on a parity with the value of with 20 phr of EOR mixed to PP.

• Proceedings of the PSK Conference
• /
• 2002.10a
• /
• pp.262.1-262.1
• /
• 2002

Uncoupling proteins (UCPs) are transmembrane proton transporters present in the mitochondria. In UCPs. UCP1 and UCP3 play an important role in adaptive thermogenesis by uncoupling mitochondrial oxidation of substrates from ATP synthesis. PPARg coactivator 1(PGC-1) regulates transcriptional activity of PPARg and other nuclear receptors and controls the expression of UCPs. (omitted)

• Proceedings of the PSK Conference
• /
• 2002.10a
• /
• pp.334.3-334.3
• /
• 2002

Ginseng(the root of Panax ginseng C.A. Meyer, Araliaceae) has been used for thousands of years as a traditional medicine in Asian countries. The main components of Ginseng are ginsenoside Rb1, Rb2 and Rc. These compounds are transformed by intestinal microflora. The main metabolite of ginsenosides was compoud K (IH-901). The transformed compound K shows an antimetastic or anticarcinogenic effect by blocking tumor invasion or preventing chromosomal aberration and tumorigenesis. Therefore. we isolated and characterzed ginseng saponin-metabolizing bacteria from human intestinal microffora. Among 200 tested intestinal bacteria. we found 78 bacteris to transform glnseng senseng saponins to compound K. These bacteria were seperated into three group: the first group highy produced ginsenside Rd (29) the second grop produced potently ginsenoside F2 (21) and the third produced compound K(28)

• Journal of Oriental Neuropsychiatry
• /
• v.18 no.3
• /
• pp.23-41
• /
• 2007

Objective: The objectives of this preliminary study was to develop cost-effective and accessible self-intervention program and to assess the effects of music listening self intervention program for Hwa-byung patients, who had undergone conflicts with family and economical problems, in quantity and quality. Subjects: Seven middle age women who bad been diagnosed with Hwa-byung by Hwa-Byung Diagnotic interview Schedule participated in this program. Method: Participants learned music listening techniques and visited hospital three times a week during 2 weeks. Music-listening self intervention for Hwa-byung patients was consisted of three sad musics(in minor) and three sedative musics(in major) and perlO1med at home for 2 weeks. Patient's somatic symptoms and self awareness (of Hwa-byung scale), anxiety(STAD, anger(STAXD, depressive mood(BDD were evaluated before and after intervention and 6 weeks later after study completed. And various and subjective responses of Music-listening self intervention for Hwa-byung patients were collected by semi- structured interview made for this study. Results: Their Somatic symptoms(especially insomnia), self-awareness of Hwa-byung and depressive mood were improved except anxiety, anger. This improvement had maintained over a 6-week follow-up period. Patients had used constantly the music-listening program for Hwa-byung patients after the study completed. Conclusion: The music-listening program will be an effective for Hwa-byung patient's somatic symptoms and depressive mood and had been used constantly by them. But, much methodological supplementation will be needed to assess clinical effects on this program.

• Journal of Oriental Neuropsychiatry
• /
• v.31 no.3
• /
• pp.135-147
• /
• 2020

Objectives: Hwa-byung is a mental illness. It is also known as a Korean culture-related syndrome. In traditional Korean medicine, Sihogayonggolmoryeo-tang is used to treat Hwa-byung related neuropsychiatric symptoms. The purpose of this research was to examine the effect of Sihogayonggolmoryeo-tang on Hwa-byung. Methods: A multicenter, randomized, double-blinded, placebo-controlled study was performed for 160 patients with Hwa-byung. Patients were divided into a Sihogayonggolmoryeo-tang group and a placebo group. Treatment period was 8 weeks. Hamilton Rating Scale for Anxiety (HAM-A), Likert scale for major symptoms of Hwa-byung, Hwa-byung Scale (HBS), Korean Beck Depression Inventory (K-BDI), Korean State-Trait Anxiety Inventory (K-STAI), Korean State-Trait Anger Expression Inventory (K-STAXI), and Korean WHO Quality of Life Scale Abbreviated Version (WHOQOL-BREF) were used to evaluate the effect of Sihogayonggolmoryeo-tang on Hwa-byung. We also used an Instrument of Pattern Identification for Hwa-Byung to evaluate different responses for six patterns of patients. Results: Scores of all the measurements improved significantly for each group, showing no significant differences between the two groups. In the case of deficiency of both Qi and blood pattern, the Sihogayonggolmoryeo-tang group showed a significant decrease in the HAM-A score compared to the placebo group. Conclusions: The effect of Sihogayonggolmoryeo-tang on Hwa-byung did not exceed that of the placebo. Further studies involving more elaborate pattern identification are needed.

• Proceedings of the Korean Vacuum Society Conference
• /
• 2002.06a
• /
• pp.54-55
• /
• 2002