• International Journal of Advanced Culture Technology
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• v.11 no.2
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• pp.210-220
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• 2023

We analyzed and compared factors such as changes in the degree of difficulty of concepts presented in Chemistry I textbook, changes in class types (non-face-to-face, face-to-face), etc. on academic achievement by level (upper, middle, and lower). Students from A high school in Gyeongsangnam-do were selected for the subjects of the study. As a result of analyzing the change in the degree of difficulty of concepts, the total score of chemistry I combined by non-face-to-face and face-to-face classes during the second semester was lower than that of the first semester. As a result of analyzing the impact of factors such as changes in conceptual difficulty, changes in class types, etc. on academic achievement by level, students' grades at the 'lower level' by non-face-to-face classes were lower than those by face-to-face classes. In particular, at the lower level of the second semester, there was a large difference in grades between non-face-to-face and face-to-face classes. In the results of these studies, it was found that instructors' active feedback is important to identify difficulties in understanding learning contents for students with low levels of academic achievement and improve them at the same time.

• Journal of Microbiology and Biotechnology
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• v.14 no.5
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• pp.972-977
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• 2004

The hypoglycemic effect of an exo-biopolymer (EXO) and endo-biopolymer (ENDO) produced from submerged mycelial culture of Ganoderma lucidum was investigated in streptozotocin (STZ)-induced diabetic rats. Both the EXO and ENDO showed hypoglycemic potential, however, the former proved to be more potent than the latter. The administration of the EXO at the dose of 100 mg/kg body weight (BW) significantly reduced the plasma glucose level (23.5%) and increased the plasma insulin level (2.2 fold) in the diabetic animals. The EXO also lowered the plasma total cholesterol, triglyceride, low-density lipoprotein (LDL) cholesterol, and athrogenic index by 14.7, 31.4, 24.1, and 45.4%, respectively, and reduced the liver total cholesterol and triglyceride levels by 6.7 and 25.8%, respectively. It increased the plasma high-density lipoprotein (HDL) cholesterol (37.7%), compared to the control group. Furthermore, the alanine transaminase (ALT) and aspartate transaminase (AST) showed lower activities in the EXO administered groups than the other experimental groups. Taken together, these results suggest that the exo-biopolymer may alleviate the blood glucose level by increased insulin secretion.

• The Research Journal of the Costume Culture
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• v.6 no.2
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• pp.77-91
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• 1998

The present study collected and analyzed the Korean's folk-belief related to Koran traditional costume culture which are handed down from ancestor and are known to present Korean society as of 1990's. The purpose of the present study is to understand emotion and the view of Korean people, and to understand the social roles of the costumes in Koran traditional society more deeply and more comprehensively. The study was conducted by document analysis and interview. The results of the study are summerized as follows: Folk-belief related to spinning(gilssam), sericultural industry and weaving are mostly enduced from the hope for god quality of work and acquisition of good skill of weaving. There has been also a belief hat gilssam has a magic power to easy delivery and fecundity. Most Folk-belief of taboo related to clothing constraction proposed to people pay great care while they are sawing. Some ways of management of clothing has been related to the manners of which are associated with the differentiation between high and low level and predominance of men over women that was originated fro m confucianism. Socks(busun) and shoes are also considered to have magic power to prevent from exorcism and demon of ill health. This study suggests that folk-belief give us the wisdom a guideline and lessons for better life, high quality arts and techniques which are handed down from ancestors. Therefore, folk-beliefs having a great value, non-shaped treasures of traditional culture heritage should be collected as many as possible, recorded, and preserved.

• Journal of the Korean Society of Food Culture
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• v.23 no.3
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• pp.366-376
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• 2008

The purpose of this study was to examine the job satisfaction of foodservice managers at schools in Jeju, Korea, according to the organizational culture and commitment of the school foodservice and administrative departments. The subjects included 144 (98.6%) dieticians from Jeju schools. The data were analyzed by descriptive analysis, reliability analysis, factor analysis, ttests, ANOVA, and Pearson's correlation coefficients, using the SPSS Win 12.0 program. In terms of organizational culture, the dieticians perceived the 'human relations model' and 'internal process model' as the strongest types for the school foodservice departments and administrative departments, respectively. However, for both types, a gap existed between the organizational culture that was perceived and that which was expected. In particular, the subjects expected that the 'human relations model' and 'open systems model' were the most important organizational culture types. In terms of the subjects' organizational commitment scores, loyalty and pride scored highest whereas unity scored lowest. For the level of job satisfaction, the performed work itself scored highest and was deemed most important. Additionally, organizational culture was positively correlated to the factors affecting organizational commitment and job satisfaction. Finally, the surveyed managers had high demands for a human relations-oriented organizational culture to enhance job satisfaction.

• Journal of the Korean Society of Food Culture
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• v.29 no.3
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• pp.231-239
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• 2014

We studied customer recognition and understanding of menu labeling as well as the correlations between customer support for menu labeling and multiple factors, such as demographic characteristics, dinning-out behavior, and menu selection criteria. This study designed a survey and received responses from 351 individuals. The analysis results reveal that most respondents did not acknowledge menu labeling or lacked knowledge of it. Many of the respondents showed experience in ordering from menus with ingredient labels, but many showed no interest in menu labeling. Exactly 114 (32.5%) respondents showed support of menu labeling, and most were interested in levels of trans-fat, fat, and cholesterol. The respondents reported that menu labeling should be implemented more in fast-food restaurants and causal dinning restaurants. This study also analyzed how customer menu selection criteria are related to support level of menu labeling. Respondents were classified into three groups based on their support level for menu labeling (low medium high), after which correlations between customer menu selection criteria and support level were examined. Respondents in the high support group considered all menu selection criteria (i.e., ingredients, health, and consideration of calories). GLM analysis showed that monthly dining-out expenses were highly related to support level with a significance level of 0.05, and the interaction between monthly dining-out expenses and respondents' jobs also affected support level with a significance level of 0.01.

• Reproductive and Developmental Biology
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• v.35 no.4
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• pp.499-502
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• 2011

Aurora A kinase is a mitotic serine/threonine kinase whose proposed functions include the maturation of centrosomes, G2/M transition, alignment of chromosomes at metaphase, and cytokinesis. In this study, we investigated the effect of MLN8237, an aurora A kinase inhibitor, on the postovulatory aging of oocytes based on the frequency of oocyte fragmentation, cdk1 kinase activity, and cyclin B degradation. The fragmentation of ovulated oocytes during prolonged culture was inhibited by treatment with MLN8237 in a concentration-dependent manner. The frequency of fragmented oocytes was significantly lower in oocytes treated with 2 ${\mu}M$ MLN8237 (13%) than in control oocytes (64%) after two days of culture. Most of the control (non-fragmented) oocytes (91%) were activated after two days of culture. In comparison, only 22% of the MLN8237-treated oocytes were activated; the rest of the oocytes (78%) were still in metaphase with an abnormal spindle and dispersed chromosomes. Next, cdk1 activity and the level of cyclin B were examined. The level of cyclin B and cdk1 activity in MLN8237-treated oocytes were nearly equal to those in control oocytes. Our results indicate that MLN8237 inhibited the fragmentation of ovulated oocytes during prolonged culture, although it blocked the spontaneous decrease in activity of cdk1 and degradation of cyclin B. This mechanism of inhibition is different from that in oocytes treated with nocodazole, which have high levels of cdk1 activity and cyclin B.

• Journal of the Korea Safety Management & Science
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• v.7 no.3
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• pp.1-15
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• 2005

Recently in Korean Society, risk and safety has become a central discourse in not only the social and natural science but also political decision making. The efficient organizational management contributes to controlling the risk factors in the workplace. For the management is influenced and improved by the organizational culture, the alternatives more than simply improving the work environment or enforcing the education of safety on each workers are required. This study was the status of safety culture in organizational members(managers and workers, and specialist) including the attitude on the safety atmosphere and risk perception, and experiences, knowledges, motivation etc. For this part, the method of questionnaire and statistical analysis are mobilized. The degree of safety commitment of organization members appears relatively high (3.97 in five scale estimation), but there are variations in this results according to socio-demographic characteristics. At the same time, managers and professionals actively participation in the program related to safety than workers in production/sales. The higher income level and career is the more attention to the safety is. Based on this survey, we make an rough suggestion of several tasks to the policy -makers: improvement of communication on the risk and safety is required and in particular, the workers in the relatively low level in production/sales. The education system about safety which is, with one-side, provided by government or managers turns out to be inefficient. Rather, small group performance of the organizational members which they participate in the communication with interaction in the various discourse are able to provoke the safety mood in workplace.

• Journal of the Korean Society of Food Culture
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• v.3 no.1
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• pp.67-76
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• 1988

With a view to making comparative study and promoting the interchange of food culture between Korea and Japan, a sensory test was given to 60 female college students (30 Koreans and as many Japanese) in order to find out differences in preference of various teas between the two nations. The findings are as follows: 1. The correlation between each specific tea and total evaluation: Significant level of high positive correlation was indicated in case of color, taste, and aftertaste by both Koreans and Japanese. In case of odor, and flavor the Koreans indicated insignificant level of nought, and the Japanese significant level of high negative correlation one. In sweetness and total evaluation the Koreans indicated positive correlation and the Japanese insignificant level of nought. 2. Comparison of preference of various teas by the Koreans and the Japanese 1) Ginseng tea A and Ginseng tea B As to Ginseng tea A and Ginseng tea B the Koreans liked odor best while the Japanese liked flavor best. In general preference the Koreans liked them better than the Japanese, and both groups indicated significant level (p <.001). 2) Black tea A: As to Black tea A the Koreans liked odor best while the Japanese taste, and in general preference the Japanese liked them better than the Koreans and both groups indicated significant level (p <.001). 3) Black tea B. As to Black tea B the Koreans liked odor best while the Japanese color, and in general preference the Japanese liked them better than the Korean and both groups indicated significant level (p <.01). 4) Coffee A. The Koreans liked odor best while the Japanese flavor, and neither of the groups indicated significant level (p <.05). 5) Coffee B. The Koreans liked color best while the Japanese flavor, and neither of the groups indicated significant level (p <.05). 6) Green tea A and Green tea B. As to Green tea A and Green tea B, the Koreans liked odor best while the Japanese taste. In general preference the Japanese liked them better than the Koreans, both indicated significant level (p <.001). 7) Malcha (a kind of traditional Green tea) Both groups liked flavor best, in general preference the Japanese liked it better than the Koreans, and both groups indicated significant level (p <.001).

• The International Journal of Costume Culture
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• v.12 no.2
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• pp.129-140
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• 2009

In this study, the effect of innovativeness of external networks on the corporate innovativeness and innovation performance were explored based on web survey data collected from 230 manufacturing companies. Specifically, according to the manufacturers' business categories divided by the technology level, three groups such as advance technology (electronic/IT), mid- to high technology (automobile/machine), and low technology (textile/clothing) companies were investigated to find out which external network influences corporate innovativeness and innovation performance. In the result, textile/clothing companies were not different in company size, history, and innovation effort from advanced technology and mid- to high technology companies. Collectively, the innovativeness of external networks affected corporate innovativeness and innovation performance. In the result by a business category, innovativeness and innovation performance of textile/clothing companies were affected by the innovativeness of competitors, whereas automobile/machine companies in the mid- to high technology group were affected by suppliers. In addition, advanced technology (electronics/IT) were affected by buyers and competitors. These differences suggest that the way to use vertical networks toward upstream (e.g., suppliers) and downstream (e. g., buyers) as well as horizontal networks toward competitors can be different by the business category of manufacturers. The result would provide implications for the academia and the industry.

• Biotechnology and Bioprocess Engineering:BBE
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• v.9 no.3
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• pp.196-200
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• 2004

The supra molecular weight poly(〔R〕-3-hydroxybutyrate) (PH B), having a molecular weight greater than 2 million Da, has recently been found to possess improved mechanical properties compared with the normal molecular weight PHB, which has a molecular weight of less than 1 million Da. However, applications for this PHB have been hampered due to the difficulty of its production. Reported here, is the development of a new metabolically engineered Escherichia coli strain and its fermentation for high level production of supra molecular weight PHB. Recombinant E. coli strains, harboring plasm ids of different copy numbers containing the Alcaligenes latus PHB biosynthesis genes, were cultured and the molecular weights of the accumulated PHB were compared. When the recombinant E. coli XL1-Blue, harboring a medium-copy-number pJC2 containing the A. latus PHB biosynthesis genes, was cultivated by fed-batch culture at pH 6.0, supra molecular weight PHB could be produced at up to 89.8 g/L with a productivity of 2.07 g PHB/L-h. The molecular weight of PHB obtained under these conditions was as high as 22 MDa, exceeding by an order of magnitude the molecular weight of PHB typically produced in Ralstonia eutropha or recombinant E. coli.