• The Journal of the Korea Contents Association
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• v.14 no.11
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• pp.225-235
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• 2014

The Purpose of the study was to examine the structural relationship among social support(social activity, family/social relationship), emotional problem and quality of life of Elderly Employment Program participants. An analysis was conducted on 2,005 participants from the data of the '2012 Elderly Employment Program Participants Survey'. The major findings were as follows: First, family/social relationship had positive effects and emotional problem had negative effects to quality of life. Second, social activity had negative effects to emotional problem. Finally, social activity had mediator effects to quality of life through emotional problem. Based on the results, the implications for social work practice and policy were suggested.

• Applied Biological Chemistry
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• v.31 no.4
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• pp.356-360
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• 1988

The alkaline protease producing bacteria isolated from soil and identified as Bacillus subtilis. The optimum medium for alkaline protease production from the microorganism was as follows; soluble starch, 1.5% ; proteose peptone, 0.5% ; $K_2HPO_4$, 0.1% ; $MgSO_4{\cdot}7H_2O$, 0.02% and sodium carbonate, 1.0%. The optimum temperature for alkaline protease production was $35^{\circ}C$, and the initial pH of medium was pH 10.5. The alkaline protease activity was about 2,300 U per ml of culture broth by Casein-Folin Method. A 9.2 fold purification of alkaline protease was obtained from culture broth. The recovery was 14% and purified enzyme was identified as single band, and its molecular weight was about 19,000. The optimum temperature for enzyme reaction was $70^{\circ}C$, and optimum pH was 12. The activity of purified enzyme was inhibited by metal ion ($Fe^{++}$), and Phenylmethylsulfonyl Fluoride, a serine protease inhibitor.

• The Journal of the Korea Contents Association
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• v.9 no.7
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• pp.171-183
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• 2009

The spiritual world of the ancient times has precious values which forms the origin of human thought. This study aims to reevaluate ancient people's particular views on man in their spiritual world reflected through gods' ornaments by studying the human race's fundamental spiritual world gradually disappearing due to science development from Egyptian gods' ornaments expressed symbolically in Ancient mythical components. Although evidently ornaments in Egypt served for decoration, the basic purpose was exorcism as amulets, a shamanistic purpose to be protected from mystical and hostile powers by carrying them on the vulnerable spots of the body. As this aspect indicates, the human race tried to solve their self-insoluble transcendental issues through the help of supernatural power, pursuing to lead their lives there within. As a result, Egyptian ornaments; First, the deity raised their value by deifying human-beings. Second, the nobility enhanced their dignity by having goddesses wear the same skirts as theirs. Thirds, all deities maintained their class society by wearing fpassiums, bracelets, and anklets. Fourth, the resurrection was symbolized through gods and goddesses in charge of the afterlife.

• Korean journal of applied entomology
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• v.48 no.2
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• pp.269-274
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• 2009

Rearing media were selected for the production of sterile larvae of greenbottle blowfly, Phaenicia (=Lucilia) sericata (Meigen) which is widely used in maggot therapy. Eight media available in the market were used in this study. Egg hatchability was not different among the media. Survivorship of the larvae was higher in blood agar (BA), sabouraud dextrose agar, and brucella blood agar than the others. A higher content (20${\sim}$40%) of sheep blood in BA and chocolate agar increased the survivorship of larvae. The eggs and the early 3rd larvae could be stored for 12 days at $8^{\circ}C$ and for 15 days at $6^{\circ}C$ without decrease in hatchability and larval survivorship, respectively.

• Journal of the Korea Convergence Society
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• v.8 no.10
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• pp.305-310
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• 2017

The purpose of the study is to test structural relationship of subjective health, ability to work, participation on economic activity, and life satisfaction among the elderly. Recently, societies have tried to lessen a social burden and alleviate negative perceptions of the elderly through some perspectives such as productive aging and active aging. In these perspectives pay attention to health and social participation to improve quality of life. Subjects were 3,392 elderly people over the age of 65 from 10th Korea Welfare Panel Study. The main results of the study are as follows. First, subjective health, ability to work, and participation on economic activity had a direct effect on life satisfaction among the elderly. Second, subjective health had a statistically significant effect on ability to work and participation on economic activity. Finally, avility to work had a positive effect on participation on economic activity. Based on the results of the analysis, this study suggested that health and work related factors should be considered as the important factors to improve the life satisfaction among the elderly.

• Journal of the Korea Convergence Society
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• v.10 no.12
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• pp.307-314
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• 2019

This paper was intended to identify the knowledge structure of youth-related research by looking at the research trends of research papers published in Korean Journal of Youth Studies from 2010 to 2018. Using keywords extracted from the papers, the Centrality and Cohesion analysis of the keyword network analysis of the NetMiner program were used. In the analysis of degree centrality, the "relationship" was the highest, followed by schools and youth, and high in the order of parents and violence. In the analysis of betweenness centrality, the "relationship" was also the highest, followed by youth, school, need, education, parents, children, abuse/emotion(the same level), institutions, regions, cell phones/prevention/welfare(the same level), elementary, attachment, suicide, addiction, society, violence, children, services, support, policy/teachers(the same level). According to the cohesion analysis, school life and policy, addiction, parent & peer relations, civic education & welfare support, sentiment and thinking, college, abuse & suicide were divided into a total of seven sub-topic subjects.

• Journal of Korean Elementary Science Education
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• v.25 no.1
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• pp.96-108
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• 2006

The purpose of this study was to investigate how prospective elementary school teachers perceived teacher's inquiryoriented teaching practice, with an emphasis on students' scientific explanations based on scientific evidence. For this study, 94 prospective elementary school teachers were participated. 14 among 94 participants had chances to intensively experience this particular teaching methods for 15 weeks. All of the 94 participants observed the intended science teaching practice for 4th graders in two different elementary schools, which utilized the science talks emphasizing students' scientific explanation activity. For quantitative data analysis, they were asked to provide their reaction to the science teaching methods after their classroom observation. For qualitative data analysis, 5 among the participants, who had relatively long term experience with this teaching practice, were chosen to interview in order to understand their individual reasons of the ways they perceived about the inquiry-oriented teaching methods boosting students' scientific explanation. The results show that the prospective elementary teachers generally thought the emphasis of students' scientific explanation based on scientific evidence could enhance young elementary students' science content understanding, stimulate their curiosity/interests, and further develop their ability to engage actively in scientific discussions. However, some prospective teachers tended to think that the science teaching. methods would not be effective in terms of managing science classes, though. This study concludes that the prospective teachers tended to hold an endemic dilemma. On the one hand, they had their clear preference to the inquiry-oriented teaching practice as the most ideal teaching methods. On the other hand, they also had their persistent hesitance in using these methods due to their fear that elementary students might not adequately grasp the important science content when engaged in scientific discourse through an inquiry-oriented class.

• Journal of The Korean Association For Science Education
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• v.19 no.2
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• pp.229-238
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• 1999

This study investigated the influences of Vee diagram and regulative metacognitive learning strategies upon 6th-graders' achievement, difficulty toward science lesson, self-efficacy, and learning approach. The Vee diagram and regulative metacognitive learning strategies were modified in a pilot study. Before instruction, an achievement test was administered, and its score was used as a blocking variable. A previous science grade was used as a covariate for post-achievement. Tests of difficulty toward science lesson, self-efficacy, and learning approach were also administered, and the test scores were used as covariates. After instruction, a researcher-made achievement test and post-tests of the above variables were administrated. Two-way ANCOVA results revealed that although there were no significant differences in the achievement test scores, the application subtest scores of the two treatment groups were significantly higher than those of the control group. There were no significant differences in the difficulty toward science lesson and learning approach, but self-efficacy scores for the students with Vee diagram and regulative metacognitive learning strategies were significantly higher than those of the other groups. The perceptions of the students using Vee diagram were also analyzed.

• Korean journal of applied entomology
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• v.48 no.1
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• pp.73-79
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• 2009

Male adults of bean bug, Riptortus clavatus Thunberg (Heteroptera: Alydidae), release aggregation pheromone (AP) which consists of (E)-2-hexenyl (Z)-3-hexenoate (E2HZ3H), (E)-2-hexenyl (E)-2-hexenoate (E2HE2H), and tetradecyl isobutyrate (TI). Variation in the pheromonal secretion were checked by the factors of age, mating status, seasons, body weight and time in a day. There were no significant differences in the amounts of AP secretion by mating, body weight, and time in a day. Higher amount of AP was detected from older males than younger ones. The amount of AP detected was higher in the males collected from April to September than in those collected during October. No AP was detected in the males of November and December. These phenomena in the AP secretion were discussed in relation to food exploitation and reproductive diapause of the bean bug.

• Korean journal of applied entomology
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• v.49 no.2
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• pp.123-127
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• 2010

Attractiveness of different amounts of methyl (E,E,Z)-2,4,6-decatrienoate, the aggregation pheromone of brown-winged stink bug, Plautia stali (Hemiptera: Pentatomidae), was tested using different kinds of dispensers. A lure filled with hexane was used as a control treatment. There were no differences in the attractiveness of the pheromone to P. stali and Halyomorpha halys among dispensers (polyethylene-vial, rubber septum, and polyethylene tube). Traps baited with 7, 20, 40, 50, and 60 mg of pheromone were tested for their attractiveness. For females, the 40 mg trap attracted highest number of P. stali, even though there were no significant differences among pheromone amounts. For males, the 40 and 50 mg traps attracted significantly more bugs than the 7, 20, and 60 mg traps and the control traps. Based on these results, the pheromone dispenser impregnated with 40 mg of pheromone will be practical in monitoring P. stali in the field.