• Tuberculosis and Respiratory Diseases
• /
• v.48 no.3
• /
• pp.308-314
• /
• 2000

Background : DNA fingerprinting of Mycobacterium tuberculosis with RFLP is a very useful tool for deciphering the molecular epidemiology of tuberculosis. An international comparison of the RFLP pattern became possible with the proposal to standardize RFLP methodology using Pvu-II restricted IS-6110, and the comparison has noted some predominance of RFLP pattern in East Asia. The RFLP patterns of tuberculosis strains collected at SNUH was studied and was compared with other strains from East Asia. Method : Fifty strains of M. tuberculosis were isolated from patients who visited 'or were admitted to the SNUH in 1998. Some isolates belonging to the Beijing family were also received. After the extraction of DNA from M. tuberculosis isolates, the chromosomal DNAs were digested with Pvu-II and analyzed by the Southern blot method with DNA probe to IS6110. Result : Six strains belonged to the Beijing family. The RFLP patterns of other 9 strains were similar to each other. No statistically significant endobronchial tuberculosis, presence of underlying disease. and the province of residence were found. Conclusion : Few groups of M. tuberculosis strains from SNUH showed similar RFLP patterns, but their clinical implications are not yet clear.

• The Journal of the Institute of Internet, Broadcasting and Communication
• /
• v.23 no.1
• /
• pp.83-92
• /
• 2023

The purpose of this research is to develop a creative education program that utilizes AI education program based on big data for general education high schools, and to investigate its effectiveness. In order to achieve the purpose of the research, we developed a creative education program using artificial intelligence based on big data for first-year general high school students, and carried out on-site classes at schools and a validation process by experts. In order to measure the creative problem-solving ability and class satisfaction of high school students, a creative problem-solving ability test was conducted before and after the program application, and a class satisfaction test was conducted after the program. The results of this study are as follows. First, AI education program based on big data were statistically effective to improve the creative problem solving ability according to independent sample t test about 'problem discovery and analysis', 'idea generation', 'execution plan', 'conviction and communication', and 'innovation tendency' except 'execution', 'the difference between pre- and post-scores of male student and female student' on first year high school students. Secondly, in satisfaction conducted after classes of AI education program based on big data, the average of 'Satisfaction', 'Interest', 'Participation', 'Persistence' were 3.56 to 3.92, and the overall average was 3.78. Therefore, it was investigated that there was a lesson effect of the AI education program based on big data developed in this research.

• KOREAN JOURNAL OF CROP SCIENCE
• /
• v.38 no.1
• /
• pp.23-30
• /
• 1993

This study was conducted to obtain the fundamental information on antioxidant component as affected by process of grain filling in different plant types of sesame. Sesamin and sesamolin as antioxidant components, oil content and seed weight were investigated for two plant types with different by branching habit. The sesamin and sesamolin contents in grains followed a pattern of increase immediately after flowering in branch type and monocapsule habit than non-branch type and tricapsule habit. But they started to decrease around 45 days after flowering, which oil content and seed weight continued to increase until maturity. The sesamin content increased quickly up from 10th to 40th day after flowering and showed almost maximum at 43th day after flowering. The sesamolin content increased quickly up from 20th to 30th day after flowering and showed almost maximum at 45th day after flowering. The oil content increased quickly up from 20th to 30th day after flowering and showed almost maximum at 47th day after flowering. The seed weight increased quickly up from 20th to 40th day after flowering and showed almost maximum at 48th day. The sesamin content, sesamolin content, oil content and seed weight showed almost maximum at from 43th to 48th day after flowering. So that this period was considered to be of physiological maturity.

• Journal of the Korean Society of Food Culture
• /
• v.25 no.6
• /
• pp.839-846
• /
• 2010

This study was designed to investigate the effects of Korean Eucommia ulmodies Oliver tea extract on aluminum administered rats. Forty-eight male Sprague-Dawley rats (100${\pm}$10 g) were divided into the following six groups; control group, 3% E. ulmodies tea extract group, 1,000 and 2,000 ppm aluminum ($Al_2(SO_4)_3$ in distilled water) groups, and 1,000 and 2,000 ppm aluminum plus 3% E. ulmodies tea extract groups. The aluminum content in the rat tissues of the aluminum administered group was lower than that in the rat tissue of the aluminum group administered 3% E. ulmodies tea extract. Asparate aminotransferase and alanine aminotransferase levels increased in the aluminum-administered group but were lower in the 3% E. ulmodies tea extract group. Lactate dehydrogenase was lower in the 3% extract E. ulmodies teaaluminum group than that in the aluminum group. Cholinesterase was higher in the 3% E. ulmodies tea-aluminum group than that in the aluminum group. Plasma renin activity levels increased in the aluminum administration group, compared with the aluminum plus 3% E. ulmodies tea group. Plasma aldosterone levels increased in the aluminum administration group compared with the aluminum plus 3% E. ulmodies tea group. These results suggest that an extract of E. ulmodies tea in water has lowering effects on the accumulation of aluminum. It is believed that the E. ulmodies tea had some protective effects in the aluminum-administered rats, but the mechanisms remain obscure.

• Journal of the Korean BIBLIA Society for library and Information Science
• /
• v.20 no.1
• /
• pp.23-38
• /
• 2009

The purpose of this study was to suggest the collection codes and simplification of call numbers for children's easy access to the children's materials. The classification schemes, author tables, expansion of classification schemes, collections codes, classification numbers used in domestic and foreign children's libraries were surveyed through questionnaires and interviewing with librarians. As a result, in foreign children's libraries, it was common practice to shelve children's materials separately into various collections and sub-collections, to mark the spine with collection code and the lead characters of the author's last name, and not to stick with their classification scheme when it comes to highly circulated children's materials such as fiction, picture book, biographies and so on. Also, in domestic children's libraries, it was found that a collection code was used a few and each call number was almost assigned by KDC number. Therefore, it was suggested that the types and codes of collection and sub-collection were divided as non-fiction, fiction, fiction/mystery, fiction/science fiction, picture book, cartoon, language, folks and fairy tales, biographies, legend, concept book, holiday, award, dinosaur, insect, DIY, transportation, tall book, pop-up, story book, board book, reference, magazine, series, new book, video, and audio and were easily expanded by combining age tables or fiction genre. Also, new simplifying methods of building call numbers with collection codes were suggested.

• KSCE Journal of Civil and Environmental Engineering Research
• /
• v.26 no.1A
• /
• pp.191-203
• /
• 2006

The vibration characteristics of composite stiffened laminated plates with stiffener is presented using the assumed natural strain 9-node shell element. To compare with previous research, the stiffened plates are composed of carbon-epoxy composite laminate with a symmetric stacking sequence. Also, the result of the present shell model for the stiffener made of composite material is compared with that of the beam model. In the case of torsionally weak stiffener, a local buckling occurs in the stiffener. In this case, the stiffener should be idealized by using the shell elements. The current investigation concentrates upon the vibration analysis of rectangular stiffened and unstiffened composite plates when subjected to the in-plane compression and shear loads. The in-plane compression affect the natural frequencies and mode shapes of the stiffened laminated composite plates and the increase in magnitude of the in-plane compressive load reduces the natural frequencies, which will become zero when the in-plane load is equal to the critical buckling load of the plate. The natural frequencies of composite stiffened plates with shear loads exhibit the higher values than the case of without shear loads. Also, the intersection, between the curves of frequencies against in-plane loads, interchanges the sequence of some of the mode shapes as a result of the increase in the inplane compressive load. The results are compared with those available in the literature and this result shows that the present shell model for the stiffened plate gives more accurate results. Therefore, the magnitude, direction type of the in-plane shear and compressive loads in laminated composite stiffened plates should be selected properly to control the specific frequency and mode shape. The Lanczos method is employed to solve the eigenvalue problems.

• Journal of the Korean Applied Science and Technology
• /
• v.40 no.4
• /
• pp.825-842
• /
• 2023

This study conducted a survey to analyze the influence of the consumer-brand interaction and the consumer-brand relationship on motivation and satisfaction based on the perceived age of men and women in their teens and 50s who subscribe to cosmetic brands through SNS accounts. For statistical processing of the collected data, frequency analysis, factor analysis, reliability analysis, regression analysis, and multiple regression analysis were performed with SPSS 21.0. The perceived age of the subjects was classified into 'perceived lower group', 'perceived middle group', and 'perceived higher group' according to the difference between the age perceived by others and the age perceived by themselves. In the three groups, the consumer-brand interaction and the consumer-brand relationship showed a meaningful positive relationship with motivation, and the consumer-brand relationship was found to be a major variable explaining 'attractive' among motivation. In the three groups, the consumer-brand interaction and the consumer-brand relationship showed a significant positive relationship with satisfaction, and the consumer-brand relationship appeared as a major variable explaining satisfaction. Therefore, the conclusion of this study is that by perceived age group, the consumer-brand interaction and the consumer-brand relationship have a positive effect on motivation and satisfaction. In particular, it was found that the consumer-brand relationship is a major variable in cosmetics motivation and satisfaction. As this study empirically analyzes the influence of age perceived on SNS on cosmetics brand marketing, it is considered to be a practical implication for establishing cosmetics sales strategy and basic data that can be used for marketing.

• Journal of agricultural medicine and community health
• /
• v.30 no.1
• /
• pp.89-100
• /
• 2005

Objectives: This study was to find the effected factors on customer satisfaction for medical service and the willingness to revisit among hospital users Methods: The data was collected by a questionnaire survey from February 1 to April 30, 2004, and 600 samples have been analysed among users of university hospital, private hospital and public hospital in a local city. Results and Conclusions: The satisfaction total score to use hospital was 113.54 points(out of 175 point), these scores were constituted 39.10 points(out of 55 point) on satisfaction score for kindness of hospital employee, 36.28 points(out of 60 point) for equipment utilization and service formality, 18.59 points(out of 30 point) for environmental status and 19.57 points(out of 30 points) for reliability in medical examination and treatment service. The factors effected on satisfaction total score to use hospital were type of visiting hospital, age of customer, convenience to visit the hospital, experience of using other hospitals(R2=0.171). The effected factors of willingness to revisit scores were such as satisfaction score in medical examination and treatment service, satisfaction score of kindness hospital employee, experience of health examination and age of customer($R^2=0.370$). In conclusion, to raise the response's willingness to revisit. This must be reinforced by employee's kindness education and medical service quality.

• Korean Journal of Agricultural Science
• /
• v.18 no.1
• /
• pp.10-20
• /
• 1991

This study was conducted to estimate heritabilities and genetic correlations on egg compositions and egg qualities in Korean Native Ogol fowl. The data were gathered from a total of 58,320 eggs in 450 pullets produced from 150 dams and 20 sires of Korean Native Ogol fowl raised at Chungnam National University from June 18, 1987 to April 6, 1989. The results obtained are summarized as follows : 1. The heritability estimates of egg compositions based on the variance of sires, dams and combined components were 0.620 - 0.723, 0206 - 0.300 and 0.413 - 0.511 for albumen weight: 0.439 - 0.737, 0.484 - 0.544 and 0.492 - 0.615 for yolk weight: 0.172 - 0.187, 0.412 - 0.642 and 0.309 - 0.503 for shell weight, respectively. 2. The heritability estimates of egg qualities based on the variance of sires, dams and combined components were 0.202 - 0279, 0.557 - 0.819 and 0.428 - 0.508 for shell thickness : 0.202 - 0.394, 0.119 - 0.678 and 0.256 - 0.440 for albumen height : 0.108 - 0.443, 0237 - 0.698 and 0244 - 0.399 for Haught units, respectively. 3. The genetic and phenotypic correlations of egg compositions were as follows; The coefficients between albumen weight and yolk weight were 0.089 - 0.564 and 0.084 - 0.235; between albumen weight and shell weight were 0.396 - 0.925 and 0225 - 0.544; between yolk weight and shell weight were 0.220 - 0.357 and 0.098 - 0.358, respectively. 4. The genetic and phenotypic correlations of egg qualities as follows; between shell thickness and albumen height were 0.082 - 0.356 and - 0.163 - 0.060; between shell thickness and Haught units were - 0.076 - 0.167 and - 0.185 - 0.010; between albumen height and Haught units were 0.338 - 0.604 and 0.154 - 0285, respectively. 5. The genetic correlations of egg compositions and egg qualities were as follows: between albumen weight and shell thickness, albumen height. Haught units were - 0.380 - - 0.002, 0239 - 0.387, and - 0279 - - 0.127; between yolk weight and shell thickness, albumen height, Haught units were - 0.294 - - 0.133, - 0.049 - 0.133 and - 0.196 - - 0.136; between shell weight and shell thickness, albumen height, Haught units were 0.127 - 0.476, 0.140 - 0273 and 0.038 - 0223, respectively.

• Korean Journal of Poultry Science
• /
• v.16 no.4
• /
• pp.193-199
• /
• 1989

This study was conducted to estimate heritabilities and genetic correlations on egg compositions in Korean Native Ogol Fowl. The date analysis were a total of 58,320 eggs in 450 pullets producted from 150 dams and 20 sires of Korean Native Ogol Fowl raised at Chungnam National University from June 18. 1987 to April 6. 1989. The results obtained are summarized as follows： 1. On the egg compositions, the albumen weight at first egg, 300 and 500 days were $24.003\pm$2.499, $28.354\pm$2.755 and $31.863\pm$3.341g； the yolk weight were $10.272\pm$1.536, $16.346\pm$1.321 and $19.212\pm$1.661g： the shell weight were $3.906\pm$0.414, $4.336\pm$0.506 and $4.822\pm$0.515g, respectively. 2. The heritability estimates of egg compositions based on the valiance of sires, dams and combined components were 0.620-0.723, 0.206-0.300 and 0.413-0.511 for albumin weight；0.439-0.737, 0.484-0.544 and 0.492-0.615 for yolk weight：0.172-0.187, 0.412-0.642 and 0.390-0.503 for shell weight, respectively. 1. The genetic and phenotypic correlation coefficients of egg compositions were as follows； The coefficients between albumen weight and yolk weight were 0.089-0.654 and 0.084-0.255；between albumen weight and shell weight were 0.396-0.925 and 0.225-0.544； between yolk weight and shell weight were 0.227-0.357 and 0.098-0.358 respectively.