• Journal of the korean academy of Pediatric Dentistry
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• v.35 no.1
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• pp.127-135
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• 2008

The purpose of study was to evaluate the amount and the accuracy of oral health care information in childcare books. Thirty five Korean childcare books were selected and analyzed. Twenty eight(80%) books contained information about oral health care and the average amount was 4.8 pages(1.2%). Among those books, the book that a dentist wrote the content and the book that was given advice from a dentist were one(3.6%) and one(3.6%), respectively. The eruption time and sequence of deciduous teeth and the toothbrushing method were described in 96.4% and 82.1% of those books. The books which contained the other oral health care contents were less than half. Three(10.7%) books contained inaccurate contents. Therefore, dentist should give oral health care information to parents more actively. And it seemed to be necessary to study other information sources like magazines, TV programs, internet resources, and education programs by health centers and department of obsterics.

• The Journal of the Korea Contents Association
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• v.14 no.10
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• pp.160-170
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• 2014

The purpose of this study was to examine the participation satisfaction of elderly participants in the job creation project for the elderly, their living satisfaction, life satisfaction and the influence of their participation satisfaction in the project on their living satisfaction and life satisfaction. The major findings of the study were as follows: First, the senior citizens who participated in the job creation project for the elderly expressed a relatively high satisfaction with the project, but the level of their living satisfaction and life satisfaction was not that high. The elderly people who participated in the educational programs of the project were more satisfied with their own participation, living and life. Second, the senior participants who were more gratified with their own participation were more satisfied with their living and life. Third, the living satisfaction and life satisfaction of the elderly participants were under the largest influence of their educational satisfaction, which was part of participation satisfaction. The findings of the study suggest that more educational programs should be offered to step up the expansion of the job creation project for the elderly. In order to boost the living satisfaction and life satisfaction of the elderly, more intensive education should be provided on the job content of the job creation project for the elderly, and the development and implementation of appropriate educational programs are required as well.

• Journal of Bio-Environment Control
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• v.19 no.4
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• pp.217-222
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• 2010

Bark is a general medium for potted Cymbidium in Korea, but it is difficult to shake off or eliminate the medium from the roots before exporting the potted plants. This working process can injure the roots and then deteriorate plant marketability. This study was carried out to select the optimum medium easier to eliminate from the roots instead of bark and the optimum amount of applied fertilizer to improve the plant growth. Cymbidium young plants 'Honey Hot' and 'Desert Look' were planted in pots with bark, cocochip, and peatmoss. The plants were treated with 2, 4, and 6 g of slow release fertilizer. The plant growth characteristics were investigated in the first and second years during production period of three years. The medium characteristics and mineral nutrient content of the leaves were also examined in the second year. In the first year, the plant growth of 'Desert Look' was improved in all peatmoss treatments more than bark. 'Honey Hot' showed the highest plant growth values in the bark treatment. In the second year, the plant growth of the two cultivars was improved in peatmoss. Cocochip treatments showed the lower plant growth values than bark and peatmoss in the first and second year. There was no significant difference among fertilizer amounts in all the media. The higher CEC values of peatmoss medium resulted to higher capacity to hold more nutrients than bark, and the nutrient retention of the peatmoss improved the plant growth. The higher K and Ca contents in the leaves would contribute to improve the plant growth. Consequently, it would be possible to use peatmoss instead of bark for Cymbidium young plants, but there must be always attention to appropriately water the medium and manage the moisture.

• Korean Journal of Childcare and Education
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• v.11 no.3
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• pp.149-167
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• 2015

This study aims to propose the future direction of research of the Nuri-Curriculum, a national level curriculum, analyzing the subjects, the research methods, and the contents of Nuri-Curriculum studies, and current research trends. For these purposes, 102 Nuri-Curriculum articles in major child care-related journals from 2012-2015 are reviewed. PASW 18.0 program was used to calculate frequency and percentage rate. The major findings are as follows. First, a considerable amount of research has been carried out despite a relatively short implementation period. Second, many research topics dealt with include curriculum-related material. Third, 74.5 percent of the articles used quantitative methods, and content-analysis was the most widely used method among them. On the contrary, there was relatively less research which used the experimental method applying the curriculum to real practice, observational or qualitative method. Fourth, most of the research contents focus on the direction of making of the curriculum. Therefore, this paper proposes the necessity of supplementary research including its application to real practice as the research approaches on the Nuri-Curriculum performed so far have been limited.

• Journal of Sensor Science and Technology
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• v.1 no.1
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• pp.59-66
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• 1992

To develop the highly sensitive TLD radiation sensors, $BaSO_{4}$ : Eu-PTFE TLDs are fabricated by polymerizing the PTFE(polytetrafluoroethylene) with $BaSO_{4}$ : Eu TL phosphors. The $BaSO_{4}$ : Eu TL phosphors having the highest sensitivity of $X/{\gamma}$-rays are obtained by sintering at $1000^{\circ}C$ in $N_{2}$ atmosphere a mixture of $BaSO_{4}$ powder with 1mol% Eu($Eu_{2}O_{3}$), 6mol% $NH_{4}Cl$ and 5mol% $(NH_{4})_{2}SO_{4}$ which were co-precipitated in dilute sulfuric acid and then dried. The activation energy, frequency factor and kinetic order of $BaSO_{4}$ : Eu TL phosphor are 1.17eV, $3.6{\times}10^{11}/sec$ and 1.25, respectively. And the spectral peak of $BaSO_{4}$ : Eu is about 425nm. The optimum TL Phosphor content and thickness of the $BaSO_{4}$ : Eu-PTFE TLD are 40wt% and $105.7mg/cm^{2}$. The optimum polymerization temperature and time for fabrication of $BaSO_{4}$ : Eu-PTFE TLDs are $380^{\circ}C$ and 2 hours in air, respectively. The linear dose range to ${\gamma}$ rays is 0.01-20Gy and fading rate is about 10%/60hours.

• Korean Security Journal
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• no.38
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• pp.163-189
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• 2014

This research is carried out to offer suggestions for improving the work efficiency and quality of private security officers and developing the private security industry; it examines the relationship between the training of private security officers that affects task efficiency as well as the ultimate outcome of an organization's work and job satisfaction while confirming the mediation effect of job consciousness. A self-administration survey method is employed and the questionnaires filled out by 180 related personnel at a private security firm located in Seoul, South Korea are analyzed for the following results. The training satisfaction variable shows a statistically significant effect on the job consciousness of private security officers, meaning that the trainees that are satisfied with the training they receive are also more dedicated to carrying out their tasks dutifully compared to those who are not content with the training. The research results stated above confirm the findings of the past studies which assert that training satisfaction factor affects job satisfaction and job consciousness has a statistically significant impact on job satisfaction and acts as a mediator between training and job satisfaction. With the results acquired, the author suggests the training providers and instructors prepare an educational service that can suit the needs of the trainees and promote job consciousness through increased training satisfaction. Lastly, with the basis on the results from this study, further research should be conducted to examine other various explanatory factors that might affect job satisfaction.

• Korean Journal of Soil Science and Fertilizer
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• v.36 no.2
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• pp.72-79
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• 2003

This study was performed to investigate the effects of CMS (Condensed Molasses Soluble, a by-product generated from molasses during the lysine production) on the nutrient uptake, growth and yield of rice. The nitrogen uptake of rice was found to be higher in CMS treatments compared to the control treatment during the growth period. The leaf color index, height of the plants and number of tillers were increased by the application of CMS. Rice yield was highest in ($7,070kg\;ha^{-1}$) and an increase of 21% was observed in 0.3% CMS treated plots compared untreated control ($3,000kg\;ha^{-1}$). The protein content of unpolished rice increased from 4 to 28% due to the effect of CMS, while Toyo palatability score decreased. Though a decrease in pH and an increase in EC values were observed with CMS application, this phenomenon did not affect the growth and yield of rice in paddy field.

• Journal of the Korean earth science society
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• v.26 no.6
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• pp.511-523
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• 2005

The purpose of this study is to analyze the 1st and 2nd Korea Earth Science Olympiad (KESO) items, in order to find informations to enhance item quality. To do this, internal and external item classification frameworks are developed. Item difficulty (P), discrimination index (DI), correlation, and reliability are estimated by using classical test theory. Generalizability is also estimated by applying the generalizability theory. The results of item classification are as follows: (1) ‘Geology’, ‘astronomy’ and ‘data analysis and interpretation’ are dominant in content and inquiry process domain, respectively. Nearly every item has textbook context. (2) There is no difference between the preliminary and final tests in terms of their thinking skills sections. (3) As a whole, the ratio of items with pictures is high in item representation. However, multiple-choice and short answer items are more common in preliminary competition, and essay type items are found more often in final competition. The ratio of simple items is high in middle school section and preliminary competition, but composite items are dominant in high school section and final competition. The findings of item analysis are as follows: (1) In the middle school section, P is low and DI is moderate. But in the high school section, there is a considerable differences between science high schools and other high schools in general. (2) The highest correlation is reported between the scores of meteorology domain and total score in middle school, whereas in high school astronomy domain and total score show the highest correlation. (3) General high school section show the highest Cronbach $\alpha$ and generalizability. (4) General high school section show acceptable generalizability coefficient (> 0.80), but middle and science high school section should increase the number of items to reach acceptable generalizability level.

• Journal of the Korean earth science society
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• v.26 no.6
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• pp.551-559
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• 2005

The Q&A service of the official Korea Astronomy and Space Science Institute (KASI) webpage was installed in 2000 and have been actively used since then. In this paper, we analyze the questions asked through the Q&A service and the number of inquiries with the aid of statistical methods. We also study the contents of the questions. Specifically, we have created statistics of questions and inquiries that go monthly and yearly, and have developed categories to analyze the characteristics of questions in regards to their cognitive aspects. Each question is categorized into two elements based on their recognitive aspect: science knowledge or science study. Each element also has sub-categories that help readers understand the characteristics of the questions. For the analysis, we used a sample consisted of questions from July to December, 2004. Through this study, we achieved a better understanding of the questions asked by the Q&A service. We are planning to improve the quality of the Q&A service by extending the size of the FAQ(frequently asked questions). Throughout this study, we find that the number of questions are increasing with time, and the overall quality of the questions is improving. As we expect the number of people using our Q&A service to increase and the questions to get more difficult to answer, development of improved content is required.

• 대한공업교육학회지
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• v.33 no.2
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• pp.137-153
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• 2008

This study has 4 purposes which are as the followings. First, it is to lay out the project based learning method which enables students to improve their creative skills. Second, it explains the appropriate way to apply the project based learning method to real learning situations. Third, it identifies how the students recognize the effectiveness of learning after the learning method has been applied. Finally, it discusses how learners recognized the effectiveness of project based learning method and how it enhanced their creative skills. During this study, research was conducted on students at J Industrial technical high school in a real learning situation. The study included 60 participants from 2 classes selected from 9 classes in third grade at the high school. Data was collected using surveys. Results indicated participants recognized the project based learning method allowed them to solve problems creatively. It enabled them to improve their creative skills and apply them to learning situation. Also, they recognized that this method provided them with varying creative thinking opportunities. The most effective technique to improve their creative skills was the brainstorming(42%), followed by creative problem solving(17%), and then the checklist method(15%). The content creation(32%), topic selection(32%), and project implementation(18%) for presentations best illustrated student originality.