• Journal of Korean Elementary Science Education
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• v.34 no.3
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• pp.338-345
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• 2015

The purpose of this study is to analyze science fields and content elements of the science reports in a web portal site of Republic of Korea in view of scientific literacy. The main results of the analysis on the 679 reports sampled in a year are as follows. First, 506 reports in 46 fields were identified. Reports about technology and earth science occupies 16% respectively, and life science occupies 13%, medical science 4%, chemistry, company, others 3% and physics 1%. Almost reports show technology as associate field. Second, the frequency rate of reports including scientific literacy content elements is 52%. Reports related to 'physics' and 'chemistry' as dominant fields show relatively high rate in scientific literacy elements. The element, 'social context' is included in about 96% of the reports. Both 'data and statistics' and 'application' show relatively low rate and large gaps according to dominant fields. A few concluding remarks and proposals follow from these results. First, as almost science reports show the nature of integrated science, scientific literacy acquisition through science reports in internet requires the integrated scientific view. Especially most science reports includes the contents related to technology or medical science, so the point of view in the science-technological literacy is required. Second, the scientific literacy content elements in reports show various rates according to dominant fields. Therefore, science reports need to complement the deficient content elements to carry out the role of science reports as scientific literacy sources.

• Journal of Korean Library and Information Science Society
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• v.36 no.4
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• pp.99-113
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• 2005

The purpose of this research is to analyze the operational state of Distance universities' electronic libraries through the Lifelong Education Law, and to find out the related problems. The main investigational focus was on the operational methodologies of the libraries and the usage levels of the full-text service. The data were collected through accessing the URLs of 17 Distance universities authorized till 2005. The result is that every university is operating their libraries either on their own $(17.7\%)$ or by using the links to the external libraries $(82.4\%)$. However, only $(35.3\%)$ of the surveyed universities provide the full-text service available on the Internet. Thus, in order to establish the fourth generation Distance university based on the Internet and Web, it is urgently needed to improve the construction and operation standards of electronic libraries in the Lifelong Education Law.

• Journal of Korean Library and Information Science Society
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• v.49 no.1
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• pp.215-232
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• 2018

The purpose of this study is to examine the effectiveness of school library services on fostering students' core competencies. In doing the research, web survey has been conducted and the data of 211 high school students were analyzed. First, the high school students' awareness of school library service facilitation is ranked 3.72 out of 5 point. High school student users' self efficacy is examined toward six core competencies of "2015 Revised Curriculum". The point of communication skills turns out to be 4.07 which is relatively high, and that of creative thinking skills is 3.66, which is relatively low. The analysis of correlations between awareness of school library service facilitations and core competency skills and self efficacy shows quantitatively meaningful correlations in all six competency areas. Based on the consequences of the study, the foundation will be established on the orientation of school library service and the acceleration of practice of competency-based education.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.25 no.1
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• pp.147-153
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• 2015

Since the DoS(Denial of Service) attack is still an important vulnerable element in many web service sites, sites including public institution should try their best in constructing defensive systems. Recently, DDoS(Distributed Denial of Service) has been raised by prompting mass network traffic that uses NTP's monlist function or DoS attack has been made related to the DNS infrastructure which is impossible for direct defense. For instance, in June 2013, there has been an outbreak of an infringement accident where Computing and Information Agency was the target. There was a DNS application DoS attack which made the public institution's Information System impossible to run its normal services. Like this, since there is a high possibility in having an extensive damage due to the characteristics of DDoS in attacking unspecific information service and not being limited to a particular information system, efforts have to be made in order to minimize cyber threats. This thesis proposes a method for using TTL (Time To Live) value in IP header to detect DDoS attack with IP spoofing, which occurs when data is transmitted under the agreed regulation between the international and domestic information system.

• The Journal of Korean Institute for Practical Engineering Education
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• v.3 no.2
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• pp.158-165
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• 2011

The purpose of this study is to develop competency model in preparation for training programs for CEO of vocational training institutes in terms of needs assessment. This study collected data from 230 public and designated vocational training institutes including commercial learning facilities and life-long training centers using questionnaire by web mail. The frame of assessing training needs of competency applied to this study was based on the model with three components, namely importance, proficiency and learning desires of job skill and task needed to CEO of vocational training institutes. The methodologies of this study used were survey, FGI and case study. The major results proved that the higher priorities of training needs for vocational training institute CEO competency were as followings: (1) Competency for attaining talent of training teachers (2) Needs assessing competency for labor market change and trainee (3) Problem solving competency (4) Leadership skills and so on.

• The KIPS Transactions:PartA
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• v.14A no.5
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• pp.269-278
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• 2007

Caching in a cache sorrel cluster environment has an advantage that minimizes the request and response tine of internet traffic and web user. Then, one of the methods that increases the hit ratio of cache is using the hash function with cooperative caching. It is keeping a fixed size of the total cache memory regardless of the number of cache servers. On the contrary, if there is no cooperative caching, the total size of cache memory increases proportional to the number of cache sowers since each cache server should keep all the cache data. The disadvantage of hashing method is that clients' requests stress a few servers in all the cache servers due to the characteristics of hashing md the overall performance of a cache server cluster depends on a few servers. In this paper, we propose the method that distributes uniformly client requests between cache servers using dynamic server information. We performed experiments using 16 PCs. Experimental results show the uniform distribution o

• KIPS Transactions on Software and Data Engineering
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• v.3 no.12
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• pp.547-552
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• 2014

As social multimedia sites are getting popular such as Flickr and Facebook, the amount of image information has been increasing very fast. So there have been many studies for accurate social image retrieval. Some of them were web image classification using semantic relations of image tags and BoVW(Bag of Visual Words). In this paper, we propose a method to detect salient region in images using GBVS(Graph Based Visual Saliency) model which can eliminate less important region like a background. First, We construct BoVW based on SIFT algorithm from the database of the preliminary retrieved images with semantically related tags. Second, detect salient region in test images using GBVS model. The result of image classification showed higher accuracy than the previous research. Therefore we expect that our method can classify a variety of images more accurately.

• Journal of Physiology & Pathology in Korean Medicine
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• v.27 no.4
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• pp.362-366
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• 2013

We are building an Korean Medicine ontology and disassembling indication terms of medicinal materials and formulas. When we disassemble these terms, an expert can disagree about another expert's result, so participants have to consider another opinion and verify each other concurrently. To achieve this, we have developed a web-based tool that support users in refining terms, disassembling them into the minimum meaning efficiently. With this tool, plural participants refer to each other and make use of this as a verification method. This would have enabled participants to achieve consensus. Due to the nature of the traditional Korean Medicine knowledge which have rich implications and is complicated,E there would be a various result of refinement, disassembly, analysis and another processing. This tool assists users in minimizing the differences and maintaining objectivity by agreement. We have refined and analyzed 4,756 terms from materials and formulas indication in Korean Medicine ontology using this tool. And we concluded that disassembled data increases the percentage of linkage between diseases and medicinal treatments and established an infrastructure for the extensible knowledge.

• Journal of the Korean Society of School Health
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• v.33 no.1
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• pp.10-18
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• 2020

Purpose: The purpose of this study was to investigate the effects of secondhand smoke on depression and suicidal ideation in adolescents. Methods: The study used the raw data of the Korea Youth Risk Behavior Web-based Survey (2018). Age, academic achievement, living with family, economic status, and stress were adjusted and the relationship between secondhand smoke and depression and suicidal thoughts was analyzed by gender. Results: The results showed that secondhand smoke had a significant effect on mental health of adolescents. Male students who experienced secondhand smoke at school and at public places had 1.41 times and 1.37 times higher depression rates, respectively. Female students who experienced secondhand smoke at home, school, and public places had 1.27 times, 1.35 times, and 1.39 times higher depression rates, respectively. Suicidal thoughts were 1.17 times and 1.22 times higher among male students who experienced secondhand smoke at school and at public places. Female students who experienced secondhand smoke at home, school, and public places had 1.12 times, 1.08 times, and 1.21 times more suicidal thoughts. Conclusion: Secondhand smoke has a significant effect on adolescent depression and suicidal thoughts. Therefore, efforts should be made to have institutional changes and increased awareness across the country, such as homes, schools, and communities, to prevent exposure to secondhand smoke.

• Journal of Korean society of Dental Hygiene
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• v.16 no.3
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• pp.417-426
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• 2016

Objectives: The objective of the study was to investigate the related factors of preventive behavior experience toward dental caries and periodontal disease in Korean adolescents. Methods: The study subjects were 72,060 adolescents in 800 schools who completed 2014 Korean Youth Risk Behavior Web-based survey. Dependent variables included general characteristics of the subjects, oral health behavior, and oral disease experience. The experience rate of sealant and scaling showed the prevention behavior of dental caries and periodontal disease. Data were analyzed by IBM SPSS statistics 20.0. Results: The experience rate of sealant accounted for 26.9%. The experience of sealant was related with gender, school, maternal education level, economic status, vigorous physical activity, smoking, usual stress, fruit consumption, milk consumption, soda consumption, snack consumption, tooth brushing, oral health education experience, periodontal bleeding and pain, mucosal disorders, and bad breath. The experience rate of scaling was 22.6%. The experience of scaling was related with gender, school, city division, learning achievement, maternal education level, economic status, residential type, vigorous physical activity, usual stress, fruit consumption, milk consumption, tooth brushing, oral health education experience, periodontal bleeding and pain, mucosal disorders, and bad breath. Conclusions: To expand preventive oral health behavior in the adolescents, it is necessary to support the systematic policy making and monetary establishment in the future.