• Wind and Structures
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• v.14 no.4
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• pp.285-300
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• 2011

Researchers at the International Hurricane Research Center (IHRC), Florida International University (FIU), are working in stages on the construction of a large state-of-the-art Wall of Wind (WoW) facility to support research in the area of Wind Engineering. In this paper, the challenges of simulating hurricane winds for the WoW are presented and investigated based on a scale model study. Three wind profiles were simulated using airfoils, and/or adjustable planks mechanism with and without grids. Evaluations of flow characteristics were performed in order to enhance the WoW's flow simulation capabilities. Characteristics of the simulated wind fields are compared to the results obtained from a study using computational fluid dynamics (CFD) and also validated via pressure measurements on small-scale models of the Silsoe cube building. Optimal scale of the test model and its optimal distance from the WoW contraction exit are determined - which are two important aspects for testing using an open jet facility such as the WoW. The main objective of this study is to further the understanding of the WoW capabilities and the characteristics of its test section by means of intensive tests and validations at small scale in order to apply this knowledge to the design of the full-scale WoW and for future wind engineering testing.

• Journal of the Korean Society of Systems Engineering
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• v.17 no.1
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• pp.76-84
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• 2021

Radioactive waste generated from nuclear power plant decommissioning shall be strictly managed so that radioactive materials above the allowable limit are not leaked into the environment. Radioactive wastes shall be classified and treated for management based on characteristics such as the type of waste, physicochemical properties, nuclide concentration and radioactivity. Waste characterization report shall be prepared and submitted to the disposal facility operator to ensure that the treated waste is suitable for disposal. The disposal facility operator shall review the waste Characterization report and visit the nuclear power plant decommissioning site to ensure that the wastes are processed step by step according to the plan. The waste Characterization report may be used as input data to evaluate disposal facility safety. Domestic and foreign data are collected and reviewed to confirm the entire processes from waste generation to delivery. This paper proposes the method to prepare the waste Characterization report which contains data and information on waste characteristics, treatment facilities & method and packaging method & container.

• Tuberculosis and Respiratory Diseases
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• v.85 no.3
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• pp.264-272
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• 2022

Background: The current conventional drug susceptibility test (DST) for Mycobacterium tuberculosis (Mtb) takes several weeks of incubation to obtain results. As a rapid method, molecular DST requires only a few days to get the results but does not fully cover the phenotypic resistance. A new rapid method based on the ability of viable Mtb bacilli to hydrolyze fluorescein diacetate to free fluorescein with detection of fluorescent mycobacteria by flow cytometric analysis, was recently developed. Methods: To evaluate this cytometric method, we tested 39 clinical isolates which were susceptible or resistant to isoniazid (INH) or rifampin (RIF), or ethambutol (EMB) by phenotypic or molecular DST methods and compared the results. Results: The susceptibility was determined by measuring the viability rate of Mtb and all the isolates which were tested with INH, RIF, and EMB showed susceptibility results concordant with those by the phenotypic solid and liquid media methods. The isolates having no mutations in the molecular DST but resistance in the conventional phenotypic DST were also resistant in this cytometric method. These results suggest that the flow cytometric DST method is faster than conventional agar phenotypic DST and may complement the results of molecular DST. Conclusion: In conclusion, the cytometric method could provide quick and more accurate information that would help clinicians to choose more effective drugs.

• Journal of the Korean School Mathematics Society
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• v.26 no.1
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• pp.1-19
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• 2023

This study analyzed the international trends of research concerning artificial intelligence in education by examining 352 papers recently published in the International Journal of Artificial Intelligence in Education(IJAIED) with the topic modeling method. The IJAIED is the official, SCOPUS-indexed journal of the International AIED Society. The analysis revealed that international AIED research trends could be categorized into eight topics with topics such as analyzing student behavior model in learning systems and designing feedback to student solutions being increased over time, whereas research focusing on data handling methods was decreased over time. Based on the findings implications and suggestions for the research and development of the applications of AIED were provided.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.19 no.8
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• pp.1811-1817
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• 2015

This paper analyzes domestic research trend on information security, compares its results with international trends, and studies future directions we should have on national level. This research is a successor of the work for analysis of global research trend on information security. Therefore we select the same analysis method to compare domestic and international research trends exactly. To do this, we use domestic papers presented or published from 2001 to 2014, measure temporal relationship between technologies related to information security, analyze domestic research trends, and compare the results. Finally we will suggest our future direction through considering international future markets of technologies.

• Ocean and Polar Research
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• v.32 no.4
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• pp.427-437
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• 2010

The Korean Government is trying to construct an ocean research station in Dokdo's water. The station would be the third ocean research station following the Ieodo station and the Gageocho station. Although the new station would served as a scientific research base for peaceful and academic purposes, the construction of the station will almost certainly lead to a diplomatic dispute between Japan and Korea in the near future due to the disputed ownership of the island. In light of the diplomatic protests against the construction of the Ieodo station by the Chinese Government, various domestic and international legal issues which could be raised regarding the construction of the Dokdo station need to be reviewed. Therefore, this article reviews the international legal status of the station and the rights and duties pertaining to its construction, investigates the domestic legal grounds relating to the construction and operation of the marine scientific installation, evaluates the international legal impacts of the construction on the expansion of maritime jurisdiction, the effective control on Dokdo and the negotiations on maritime boundary delimitation, and finally draws conclusions on the future activities of the Korean Government for the construction and operation of the Dokdo Ocean Research Station.

• Journal of Korean Biological Nursing Science
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• v.21 no.2
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• pp.99-107
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• 2019

Purpose: The purpose of this study was to determine the current status of obesity intervention programs, and its effects on endothelium function in adolescents. Method: This was a descriptive research study, that investigated domestic and international literature 2009-2018. Using databases inside and outside of Korea to search for 'adolescent', 'obese adolescent', 'exercise', 'program', or 'intervention', and 'endothelium function', a total of 14 literature have been selected for 6 domestic research and 8 international research, excluding overlapping, case studies, literature reviews, and unrelated studies. Results: Interventions for enhancing endothelium function were exercise program, diet, vitamin D3 treatment, and Orlistat intake relative to international research, and combined exercise and purple sweet potato intake, in most domestic research. Dependent variables included FMD, RHI, NMD, EPCs, and EMPs, for measuring endothelium function in international research, and PWV, FMD and RHI, in domestic research. Conclusion: Results of this study confirmed that application of obese intervention programs, may improve endothelium function in adolescents. Further studies are required, to develop nursing intervention, that would enhance endothelium function in adolescents.

• Journal of Korea Trade
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• v.26 no.7
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• pp.43-58
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• 2022

Purpose - Based on the telecommunication service trade data of China, Japan, and South Korea from 2009 to 2019, this paper compares and analyzes the international competitiveness of the three countries' telecommunication service trade, and finds the existing problems in China through the comparison, so as to make reasonable planning and industrial development strategy, and find away to catch up. Design/methodology - The comparative analysis method was used to compare and analyze the international competitiveness of telecommunication service trade among China, Japan, and South Korea from the three aspects of market share, trade surplus, and export proportion represented by MS, TC, G-L, RCA, and CA. Findings - The international competitiveness of telecommunication service trade among China, Japan, and South Korea does not have competitive advantages. China is larger than Japan and South Korea, but only close to average globally, and its share of trade in telecommunications services is lower than Japan and South Korea's. Originality/value - This paper tries to explore international competitiveness in the field of telecommunication service trade, and through the comparison of five indicators to find problems in China, so as to put forward countermeasures to improve the international competitiveness of China's telecommunication service trade, and lay a foundation for subsequent research on the source factors of international competitiveness.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.2
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• pp.648-653
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• 2012

The government announced a strategy for the world's leading science and technology from 2008 to 2012. South Korea government has committed 1.3 percent for joint research projects research among total budget. The goal of this paper is to find Strategy for international technological participating particularly EU. This paper consists of six chapters. Chapter 2 the status of international collaborative research participation of korean companies. Chapter 3 is the theoretical basic. Chapter 4 is research methods. Chapter 5 of this paper is presented EUREKA collaboration as core of this paper. Chapter 6 hat conclusions and policy proposals.

• Tunnel and Underground Space
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• v.12 no.3
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• pp.152-157
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• 2002

Optimal design of the long tunnels with large cross sections essential for the effective development of the limited land in Korea becomes more and more difficult owing to the constantly changing social, economic, environmental and technological factors. Deficiency of the domestic research works till now on the elementary topics on tunnel ventilation retards progress on developing the key technologies urgently required for designing and managing the long and large tunnels. This paper aims at identifying the subjects on which research must be carried out for the construction and management of vehicle tunnels in Korea by means of scrutinizing the contents of the publications since 1991 at the International Symposium on Aerodynamic and Ventilation of Vehicle Tunnels, the only international conference on the tunnel ventilation.