• Fire Science and Engineering
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• v.34 no.1
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• pp.89-102
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• 2020

Chemical terrorism using toxic and flammable gases, which could be fatal to the health of the human body, poses a serious threat to the security of most advanced countries, as well as those that are suffering from local disputes, due to the asymmetric information that exists between terrorist actors and victims. The countermeasures against chemical terrorism can be roughly divided into three stages: prevention, response, and probation. The critical factors for each professional response agency, and the personnel that determine the degree and range of chemical terrorism damage, are performing missions successfully in the process of the prevention and the response stage against chemical terrorism. To do this, conducting objective and systematical assessments on facilities that could potentially be the subject of chemical terrorism is more important than anything. In this study, we compared the existing domestic and foreign vulnerable classification systems for chemical terrorism, reviewed the current direction of improvement in domestic classification systems, and suggested more scientific and systematic methodologies through the vulnerability assessment on an actual public facility sample.

• Journal of the Korean Society for Nondestructive Testing
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• v.30 no.5
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• pp.429-436
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• 2010

Recently, (terahertz ray) applications have emerged as one of the most promising new powerful nondestructive evaluation (NDE) techniques. In this study, a new T-ray time-domain spectroscopy system was utilized for detecting and evaluating layup effect and flaw in FRP composite laminates. Extensive experimental measurements in reflection and thru-transmission modes were made to map out the T-ray images. Especially this was demonstrated in thick GFRP laminates containing double saw slots. In carbon composites the penetration of terahertz waves is limited to some degree and the detection of flaws is strongly affected by the angle between the electric field(E-field) vector of the terahertz waves and the intervening fiber directions. The artificial defects investigated by terahertz waves were bonded foreign material, simulated disbond and delamination and mechanical impact damage. The effectiveness and limitations of terahertz radiation for the NDE of composites are discussed.

• Journal of Technology Innovation
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• v.25 no.2
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• pp.127-152
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• 2017

With the advent of the WTO system in 1995, non-tariff barriers including technical barriers to trade(TBT) has become one of the important issues in world trade order. The purpose of this study is to analyse an impact of the calibration and measurement capabilities(CMC), the degree of equivalence of national measurement standards which is maintained by NMIs to provide governments with a technical foundation for wider agreements related to international trade. The results of the analysis using the gravity model with the proxy of the CMC shows that the CMC has a positive impact on Korean trade. Particularly, it was estimated that the CMC registered by high-income economies has more impact on Korean trade than those by low income economies. This implies that the countries highly dependent upon foreign trade like Korea need to have much more interest in the investment into measurement standards and science which is generally considered to be a public goods.

• Fashion & Textile Research Journal
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• v.17 no.1
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• pp.74-81
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• 2015

This study explored the degree of cognition, purchasing experience and attitudes towards SPA brand attributes. This study examined the differences in variables and demographic characteristics against appearance interest groups. A questionnaire survey collected data from November $1^{st}$ and $15^{th}$ 2012. The convenience sample was drawn from females between the ages of 20 and 39 who lived in the Daegu and Gyeongbuk regions of South Korea. A total of 255 responses were complete and usable questionnaires. Data were tested through factor analysis, t-test, and ${\chi}^2$ test using SPSS 21.0. The results show that there were significant group differences in the cognition and purchasing experience of SPA brands and the attitudes towards SPA brand attributes. The high appearance interest group was more aware of SPA brands and evaluated SPA brand attributes more positively and bought more SPA brand products than the low appearance interest group. The high appearance interest group showed that domestic brands were excellent in low price among brand attributes but foreign brands were relatively excellent in various design and store display. There was a significant difference in educational level between appearance interest groups; however, there were no significant differences in age, marital status, and income level group. This study contributes to basic information for the SPA brand buying behavior research field and apparel industry marketing strategy by analyzing the relationship among appearance interest, cognition, SPA brand purchasing experience and SPA brand attribute attitudes.

• Journal of the Korean Applied Science and Technology
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• v.30 no.1
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• pp.49-56
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• 2013

Excellent electron transport properties with enhanced light scattering ability for light harvesting have made well-ordered one dimensional $TiO_2$ nanotube(TNT) arrays an alternative candidate over $TiO_2$ nanoparticles in the area of solar energy conversion applications. The principal drawback of TNT arrays being activated only by UV light has been addressed by coupling the TNT with secondary materials which are visible light-triggered. As well as extending the absorption region of sunlight, the introduction of these foreign components is also found to influence the charge separation and electron lifetime of TNT. In this study, a novel method to fabricate the TNT-based composite photoelectrodes employing visible responsive $CuInS_2$ (CIS) nanoparticles is presented. The developed method is a square wave pulse-assisted electrochemical deposition approach to wrap the inner and outer walls of a TNT array with CIS nanoparticles. Instead of coating as a dense compact layer of CIS by a conventional non-pulsed-electrochemical deposition method, the nanoparticles pack relatively loosely to form a rough surface which increases the surface area of the composite and results in a higher degree of light scattering within the tubular channels and hence a greater chance of absorption. The excellence coverage of CIS on the tubular $TiO_2$ allows the construction of an effective heterojunction that exhibits enhanced photoelectrochemical performance.

• Journal of Korean Library and Information Science Society
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• v.42 no.2
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• pp.323-341
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• 2011

In this study, the factor that affect use value of domestic public library was analysed. This study try to grasp the effect of various variables such as characteristics of the respondent and library through the measurement using CVM that extract the value by the user's statement. For this purpose, effective variables identified in the value measurement study of domestic and foreign public library was grasped and characteristics of the effective variables presented in the study examined. The factor influenced WTP representing library's value are the demographic characteristics such as gender, income, age and the using pattern such as frequency of use, time to visit. As to user's satisfaction and recognition, the recognition about librarian's satisfaction, place for resident's exchange, degree of financial support, culture-art volunteers are affecting depending on the service such as information, facilities and programs. The study comprehensively analysed the impact on the value measured by all types of public library in the nation and provided the information about property of value assessed by user according to region and scale. This information is expected to help the strategic policy making to enhance the value of library in the future.

• Journal of Korea Water Resources Association
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• v.37 no.3
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• pp.207-217
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• 2004

Our government is interested in the rehabilitation for the old sewer rather than the construction of a new sewer system. However, the research work on the sewer rehabilitation is not sufficient as much as the interest on the rehabilitation is increased. There are some research works for the determination of rehabilitation time by the genetic algorithm in Korea and foreign countries. However, the previous studies have considered the simple elements for the determination of the rehabilitation time and so the complex decision-making according to the degree of sewer superannuation has not been performed. Therefore, in this study, we estimate the capacity and Ⅰ/Ⅰ of sewer and determine the priority of the optimal rehabilitation for each outfall within the draining system. Also we develop the optimal rehabilitation decision making system for the cost estimation of optimal rehabilitation using the genetic algorithm.

• Journal of Information Management
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• v.35 no.2
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• pp.1-40
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• 2004

Theses and dissertations are works embodying results of original research on a subject and substantiating a particular point of view by usually graduate students, as a degree requirement. Most theses and dissertations are not controlled by commercial publishing interests, and thus are not obtained in book-form by most libraries. Due to their lack of physical and ready availability and information about the contents, theses and dissertations have been extremely underutilized sources of information without distinction of nations. The goal of this paper is to provide the current informations on the distribution and management systems of theses and dissertations in Foreign and Korea. The findings of this study will provide the basis for developing an standardized management model of theses and dissertations that meets the needs of researchers, students, and librarians in Korea.

• Proceeding of Spring/Autumn Annual Conference of KHA
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• 2008.04a
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• pp.203-208
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• 2008

The purpose of the study is to establish the concept of residential standard, and at the same time to investigate the area of the minimum residential standard in the countries of the world through the preceding studies. In addition, it also aims at establishing the objective residential standard by comparing the residential standard of Korea with that of foreign countries, examining the problems and finding out the matters to be improved through the comparison of the residential standard in advanced countries with the minimum residential standard of Korea. The standard residential area, derived from the process of examining the minimum residential standard, will be used as the basic material for the calculation of the reasonable area in the surface plan for the study of low-cost housing development. The method of the study is to establish the concept of residential standard and at the same time to find out the problems in the minimum residential standard of Korea and improvement methods through the comparison of the residential standards in other countries. As the result of the studies focused on the area among the residential standards, it is found out that the Korea's residential area per capita is established as the least in comparison with that of advanced countries. The real area decided depending on the size of social space suitable for living can play a role in improving the degree of satisfaction in the person's living in the residential area. Therefore, it is urgently necessary to make a depth study on the surface area of the minimum residential standard, and it is also required to propose the residential standard and directions for the improvement of the qualitative level rather the quantitative expansion of residential structures.

• Convergence Security Journal
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• v.10 no.4
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• pp.61-67
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• 2010

Information communication the dazzling development life was convenient with to join in and planned an industrial technical advance. Not only the nation with technical security of the enterprise between the description competition keenly in the present point of view which rushes to technical competitive time of the nation between is become accomplished. The damage which is caused by with outflow of industrial secrecy that company prevents this effectively because is threatening at the degree which will threaten the existence of the nation and the technique which manages is become accomplished with the domestic foreign enemy. Prevents an industrial secret outflow the research for on a large scale with physical security technique and information security to be divided, is researched.