• Structural Monitoring and Maintenance
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• v.6 no.2
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• pp.125-145
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• 2019

Bridge scour is one of the predominant causes of bridge failure. Current climate deterioration leads to increase of flooding frequency and severity and thus poses a higher risk of bridge scour failure than before. Recent studies have explored extensively the vibration-based scour monitoring technique by analyzing the structural modal properties before and after damage. However, the state-of-art of this area lacks a systematic approach with sufficient robustness and credibility for practical decision making. This paper attempts to develop a data-driven methodology for bridge scour monitoring using support vector machines. This study extracts features from the bridge dynamic responses based on a generic sensitivity study on the bridge's modal properties and selects the features that are significantly contributive to bridge scour detection. Results indicate that the proposed data-driven method can quantify the bridge scour damage with satisfactory accuracy for most cases. This paper provides an alternative methodology for bridge scour evaluation using the machine learning method. It has the potential to be practically applied for bridge safety assessment in case that scour happens.

• Journal of the Korean Society of Safety
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• v.12 no.4
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• pp.241-248
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• 1997

This paper presents the development procedure and application of the generic component reliability data base considering the dependency among dependent generic compendia in NPPs (Nuclear Power Plants) PSA (Probabilistic Safety Assessment) under construction or without operating history. We use MPRDP (Multi-Purpose Reliability Data Processor) code developed in KAERI (Korea Atomic Energy Research Institute) based on a PEB (Parametric Empirical Bayesian) procedure to estimate the reliability. The employed model in this study accounts for the relative credibility as well as the dependency among generic estimates. Numerical examples and the part of summarized reliability data table are provided as the application.

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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• v.31 no.2
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• pp.86-103
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• 2018

Objectives : The purpose of this study is to analyze various Korean medical treatments on acne scar and to propose better methods on clinical studies and effective treatments. Methods : Key word 'Acne Scar', published year '2010-2018' were searched on three domestic database systems (RISS, KISS, NDSL). Results : Among 9 studies, 8 studies were case reports and 1 study was comparative study. The treatment used in 9 studies were acupuncture(Subcision, Microneedle Therapy System, laser), pharmacopuncture, external application, dermabrasion, high frequency therapy. 7 out of 9 studies used more than 2 different treatments. The most popular treatment method was 'subcision', followed by 'MTS'. The most popular methods of assessment was QGASC. All studies using assessment methods measuring the severity of acne scar reported improvement, though only 1 study was proved to be statistically different. 1 study reported the side effect, and other 4 studies reported flushing, itching, pain. Conclusions : This study shows the effectiveness of Korean medical treatment on acne scar. It will be expected to use this various treatments and study methods for treating acne scar with Korean medicine, and conducting further clinical studies with higher credibility and reproducibility.

• Journal of Korean society of Dental Hygiene
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• v.12 no.5
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• pp.963-971
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• 2012

Objectives : The purpose of this study was to make a comparative analysis of the websites of dental office from different countries to provide some information for the quality evaluation of the websites of dental office. Methods : Two hundred twenty-four dental websites were selected by using Yahoo, one of the international portal sites, which included 59 from the United States, 50 from the United Kingdom, 54 from Canada, and 61 from Korea. Results : 1. As results of the credibility of the websites, the Canadian websites were most reliable, followed by the American websites, the English websites and the Korean ones(p<0.005). 2. As results of the complementarity of the websites, the Korean websites were most interactive, followed by the American websites, the English websites, and the Canadian ones(p<0.001). 3. As results of the accessibility of use of the websites, the Korean websites were easiest to use, followed by the American websites, the Canadian websites, and the English ones(p<0.001). 4. As results of the update of the websites from the nations, the Korean websites were most sustainable, followed by the English websites, the Canadian websites and the American ones(p<0.05). 5. When the overall quality of the dental office websites was assessed, the Korean websites were the best, followed by the Canadian websites, the American websites and the English ones(p<0.001). Conclusions : In order to make accurate oral health information more accessible to people in general, prolonged research efforts should be continued for the evaluation of the quality of dental office websites, and the development of standard international evaluation criteria is required as well.

• Korean Journal of Forensic Psychology
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• v.12 no.2
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• pp.223-251
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• 2021

Statement analysis is a technique that examines the credibility of a statement by scientifically analyzing problems and psychological characteristics that appear in the content of the statement. The statement analysis report is prepared, submitted, and used for legal judgments when there is a suspicion of sexual abuse for children(under 13 years of age) and persons with disabilities since it is usually difficult to secure physical evidence nor eyewitnesses. However, the criteria for evaluating the quality of a statement analysis report or testimony are not available in Korea. Although forensic experts and professional organizations in North America and Europe are providing recommendations and guidelines for preparing forensic assessment reports, qualitative analysis research studies for forensic reports revealed a number of problems such as missing or poorly described essential information and lack of logical connection between evaluation results and forensic opinions. Therefore, forensic evaluation guidelines and forensic reports submitted to the courts in the United States, as well as the Structured Quality assessment of eXpert testimony (SQX-12) developed in Sweden were examined to suggest the Korean version of quality evaluation criteria for statement analysis report and testimony. This criteria can be used to improve effectiveness of forensic reports within criminal justice system and used as a guideline to assess the quality forensic reports or expert testimony prepared by experts. However, this criteria do not guarantee the reliability of the statement itself.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.30 no.4
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• pp.157-173
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• 2019

Due to the fact that cognitive authority influences an individual's thoughts so that a given information is perceived as appropriate, people evaluate information based on their cognitive authority. The purpose of the present study is to examine the perception of the cognitive authority of online information sources used by college students to carry out their academic tasks, and to determine whether such perceptions affect the quality assessment of information sources, such as webpages, e-journals, and Wikipedia,. Specifically, we measured how cognitive authority, which were formed by the author, the surface, and the content of an information source influenced its accuracy, usefulness, completeness, and expertise. For this purpose, online surveys were conducted with college students, and 172 valid responses were obtained. Findings indicated that all the characteristics that formed the cognitive authority of an information source had significant impacts on its accuracy, usefulness, completeness, and expertise. The study suggests academic implications that confirm the associations between cognitive authority and credibility of information in the context of online information sources. Furthermore, the study provides practical implications that system developers or operators of information sources need to consider diverse factors that affect their cognitive authority to promote users' trust on the information that they deliver.

• Fire Science and Engineering
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• v.16 no.1
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• pp.45-50
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• 2002

This study set its bases needed for building fire risk analysis by examining general concept and definitions of fire risk analysis, and its access methods. Upon this basis, by using a computer program FREM, we brought the type of hazards out of the fire risk assessment applied to the typical 100 high-rise buildings in and out of this country. In this process, we also sorted out the programs arising from the application of a foreign born tool to domestic conditions. the credibility of fire separations and automatic fire protection system in a building would be the two most important things in an attempt to evaluate fire risk in high-rise buildings. In addition, it is vital for the purpose of securing fire safety in high-rise buildings that the systems should be properly installed and carefully maintained. When we try hard to study the evaluation standards to the above systems and, someday in the future, to employ them in evaluating fire risks in high-rise buildings, we can measure the risks much more precisely with less expenses than that we needed today.

• Journal of the Korean Society of Earth Science Education
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• v.5 no.2
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• pp.175-188
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• 2012

The purpose of this study were to explore teaching method for scientific inquiry including scientific argumentation to increase students' scientific literacy. For this study, the detailed guideline including assessment frame for students' argumentation was developed and applied to seventh and ninth grade students. From this application, data were collected from the students' views by pre, post questionnaire and the teachers who had taught to their students by questionnaire including students' attitudes change and applicability. From this study, the result were following. The change of students' perceptions was revealed by questionnaire and the teachers' description. And the applicability of this teaching method was indicated by the teachers' opinion. From these findings, the method was found as applicable teaching method to teach scientific inquiry including scientific argumentation in school science.

• Journal of Korean Institute of Industrial Engineers
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• v.39 no.6
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• pp.486-497
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• 2013

In this paper, we first present an in-depth survey of the research on Verification, Validation and Accreditation (VV&A) applied in various areas. Then we introduce the characteristics of the military and defense Modeling and Simulation (M&S) and propose the direction of method for VV&A with the identified characteristics. The M&S has been widely used in many different applications in the military and defense area including training, analysis, and acquisition. Methods and processes of VV&A have been proposed by researchers and M&S practitioners to guarantee the correctness of the M&S. The idea of applying the formal credibility assessment in VV&A is originated from the Software Engineering Reliability Test and Systems Engineering Development Process. However, the current VV&A techniques and processes proposed in the research community have not utilized the military-and-defense specific characteristics. We identify the characteristics and issues that can be found in the military and defense M&S. Then propose the direction of techniques and methods for VV&A considering the characteristics and issues. Also, possible research direction on the development of VV&A is proposed.

• Herbal Formula Science
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• v.27 no.1
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• pp.31-44
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• 2019

Objective : Herbal dispensaries, where medications are prepared for patients, require specific preparation and operations management for safe herbal medicines. This study aims to propose improvements in the herbal medicine preparation and operation of the herbal dispensaries as series study of the "A Survey on the Management Status of Extramural Herbal Dispensaries" Methods : We first checked current management regulations. In addition, we compared and analyzed related laws which are "State management norm of Traditional Chinese Medicine dispensaries", "Enforcement Rule of Medicinal Product Safety" and " Hazard Analysis and Critical Control Point(HACCP)", to introduce the assessment items of herbal dispenses evaluation and certification system. Results : In this study, we found that the current regulations, "Guideline on Installation and Utilization of Extremal Herbal Pharmaceutical Facility and Shared-use of Herbal Dispensary", are insufficient to ensure the quality and safety of herbal medicines. We suggested articles for the proper management of herbal dispensaries and these were introduced to the Herbal dispensary evaluation and certification system. Conclusion : We recommend evaluation articles in Herbal dispensary evaluation and certification systems need to be popular among herbal dispensaries, then Korean herbal medicine could restore credibility from the people.