• Communications of Mathematical Education
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• v.23 no.4
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• pp.961-976
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• 2009

The purpose of this study is to revise the curriculum of mathematics, which is the basic for the engineering studies, especially for the disciplines of the electronic engineering, computer science, computer engineering, mechanical engineering, environmental engineering, civil engineering and architecture. Another goal of this research was to integrate a computer software, MATLAB into a mathematics course so that the mathematical concepts and theories in the course can be visualized to help students understand some difficult subjects and enhance their interest in mathematics.

• Journal of the Korean Society for Library and Information Science
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• v.42 no.4
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• pp.95-112
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• 2008

In contrast to traditional taxonomy, folksonomy is generated not only by experts but also by creators and consumers of the content. Folksonomy is the practice and method of collaboratively creating and managing tags to annotate and categorize content. It is also known as collaborative tagging or social indexing. Folksonomy is also used to link to create social network that connect people to people who share same interest. Folksonomy users can generally discover the contents by which the tag sets of another user who tends to interpret contents in a way that makes sense to them. Firstly, this study consider the significance and some critical issues about folksonomy. Secondly, analyze special features of Korean academic site's folksonomy, which is managed by academic information site. Accordingly consider the directions of development about folksonomy system.

• Journal of the Korea institute for structural maintenance and inspection
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• v.3 no.3
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• pp.237-243
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• 1999

Recently, there has been considerable interest in the development of fiber-optic sensors based on fiber Bragg gratings (FBGs), which can be made into Ge-doped fiber's core by UV phase mask or holographic methods. A good sensitivity and small size of this sensor make it an ideal candidate for distributed sensing in smart structures or other structural monitoring applications. In this study, fiber optic Bragg grating sensor, which could be applied to measure the absolute strains, was constructed and the strain sensitivity of this sensor was investigated in order to apply to the structural health monitoring. Fiber Fabry-Perot (FFP) filter has been used to detect the optical signals instead of optical spectrum analyzer. It has been convenient to determine the structural strains from the output signal of FBGs. The fiber optic Bragg grating sensor was attached on the aluminum beam near the electrical strain gage to measure the same strain. The relationship between strain and fiber signal was linearly fitted. The strain sensitivity of the fiber optic Bragg grating sensor was determined as $l.57{\mu}{\varepsilon}/{\mu}sec$ from the aluminum beam test.

• Journal of the Korea Computer Industry Society
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• v.2 no.7
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• pp.953-966
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• 2001

It has been widely recognized that our educational system hasn't been able to keep up with the fast advancement of technological development. We can frequently meet the expression： students of twenty-first century and schools and teachers of nineteenth century. All the people in this country arouse their interest in education and exclaim as experts. However, there's no one to believe that the condition of education is improved. Currently, as internet is being delved into all parts of society, cyber education is being spread with rapid speed. I want to focus on some of the issues raised during the last two years from some of the institutions built on the internet using this new technology. This study will find the limits of cyber education with virtual class and suggest devices to overcome the faults.

• The Journal of Asian Finance, Economics and Business
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• v.6 no.1
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• pp.91-105
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• 2019

The paper aims to combine balance sheet analysis at the firm level with the International Monetary Fund's public debt sustainability assessment framework to assess state-owned enterprises' (SOE) leverage as a contingent liability to the public sector. Based on company data and the interest coverage ratio as a measure of debt at risk, aggregate baseline scenarios are projected to gauge the magnitude of SOE debt as a contingency. SOE's financial and debt ratios are first bootstrapped to generate firm-level distributions and then averaged into a fan chart of the economy-wide SOE contingent liability. Applied to the People's Republic of China as an example, the study finds that by the end of 2015 SOE leverage had grown to a substantial liability. However arbitrary the assumptions underlying these projections, it would appear that even if authorities had to mop up as much as 20% of SOE debt at risk gone bad, this would have been manageable at roughly 2.7% of the gross domestic product in 2016 or 5.5% by 2021. This projection framework is fully amenable to alternative assumptions and settings, which makes it a useful analytical tool to monitor contingent liabilities from non-financial corporate debt that have been building in emerging and advanced economies alike.

• Annual Conference of KIPS
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• 2001.04a
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• pp.251-254
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• 2001

대표적인 분산 객체 환경을 위한 프레임 웍으로 1990년대 초 OMG(Object Management Group)에서 발표한 CORBA(Common Object Request Broker Architecture)를 들 수 있다. 이것은 분산, 이기종 환경에서 객체기반 응용 프로그램들의 재사용성(reusability), 이식성, 상호 운용성(interoperability)을 위한 공통 프레임 ???p이다. 하지만 표준 CORBA는 실시간 응용 프로그램 지원을 위한 한계점을 내재하고 있으므로 이를 그대로 적용하기에는 적합하지 않다. 때문에 RT-SIG(Real-Time Interest Special Croup)에서는 실시간 어플리케이션을 지원하기 위한 일련의 작업이 이루어 졌고, 그 산물로는 TAO(The Ace Orb)와 NraD(US Navy Research and Development), lona 사의 Orbix ORB, Lockheed Martin 사에서 개발한 CORBA 등이 있다. 하지만 표준 CORBA 명세서에 따르면 COS(CORBA Object Service)중의 하나인 이벤트 서비스는 실시간 응용프로그램을 지원하기 위해 필요한 실시간 디스패칭과 스케줄링의 보장, 중앙 집중화된 이벤트 필터링과 상관성을 위한 명시, 주기적 처리 지원 등의 기능이 결여되어 있기 때문에 이를 지원하는 실시간 이벤트 서비스가 요구된다. 이러한 요구에 부합하기 위해 필요한 요구사항을 자바 API 형태로 구현하고 향후 성능에 대한 개선 방향을 제시한다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2010.10a
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• pp.363-366
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• 2010

Currently social games with an emphasis on the relationship between the friends, especially women customers, have contributed to the expansion of game market attracting large audiences. Though recent interest in social games and the explosive propagation of social game into game industry, scholarly research for social game is insufficient. The objective of the study is to explore the success factors for successful social games. We suggest the guidelines for development of social game. Commercial success of social games and the number of users with the best game, farmville, were investigated for understanding key success factors in social game field. As a result, social interaction, simple interface, non-dynamic methods, instrumental rationality factors have been identified. This study will expect the guideline in order to develop a successful social games.

• Journal of Radiation Industry
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• v.8 no.2
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• pp.77-81
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• 2014

Hyaluronic acid is a disaccharide polymer that consists of glucuronic acid and N-acetylglucosamine, and is a glycosaminoglycan. It is widely distributed in animal connective tissue, coexisting with chondroitin sulfate. It forms viscous secretions or gel by bonding to protein in the body, and thus maintains and lubricates tissue structures. In addition, its antibiotic properties are applied to cosmetics and pharmaceuticals. Therefore, it has recently been an object of great interest at cosmetic and pharmaceutical companies. $^{125}I$ has a longer half-life (59.4 days) than many other radioisotopes, and is therefore useful to long-term studies. In this study, a facile and efficient procedure for the synthesis of $^{125}I$-labeled hyaluronic acid has been designed for in vivo imaging and pharmacokinetic studies of hyaluronic acid, which are required for the development of new drugs.

• Journal of Radiation Industry
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• v.9 no.4
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• pp.181-185
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• 2015

Today the biosafety evaluation, a common problem of vital importance, is based on internationally proved test-systems, standards and techniques. The paradigm of biosafety includes multidisciplinary approach, a combination of physical, chemical and biological tests to monitor the environmental level of pollutants and needs to be improved by modern approaches. The genetic risk of environmental pollutions has long been studied by many researchers. In this study, used was the known sensitive plant test-system, clones of plant Tradescantia (spiderwort) able to detect gene mutations (frequency of mutational events and formation of micronuclei) in combination with chemical and, in some instances, with radiological measurements. In addition, male gametophyte generation of fruit trees was applied as bioindicators of genotoxicity. The obtained results did not show any significant increase along with wind direction. As for the male gametophyte assay, the fertility of the investigated fruit-trees near to NPP did not significantly differ from that of the control point. The influence of the NPP on the male generative system of the investigated taxa of fruit trees for the investigated year was not revealed. The system described needs to be expanded by species of interest (human) as there is a difficulty to transfer the revealed dose correlations to humans. The development of this idea includes various levels: population (epidemiological studies), individual, cellular, molecular (DNA), etc.

• Journal of health informatics and statistics
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• v.43 no.4
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• pp.318-328
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• 2018

Objectives: People are living longer, but often with diseases or chronic conditions. As a consequence, interest in resolving insurance blind spots is growing. This study provides substandard risk-relevant statistics to help substandard risks who are likely to fall in insurance blind spots obtain insurance coverage, such as the reimbursement of medical costs, as well as to stimulate insurance product development. Methods: This study uses National Health Insurance Service (NHIS) cohort data to determine the relevant statistics. The incidence rates of severe diseases are derived and compared against standard risks to establish a set of relative risk factors. These incidence rates of standard and substandard risks are then compared. Results: Currently, an individual's cancer history is used in the underwriting process for simplified issue insurance. However, underwriting focusing on hospitalization and procedures related to serious illnesses could lower premiums for substandard risks. Moreover, the statistical results could be used to expand the coverage of health insurance products. Conclusions: This study's relative risk factors can be used to derive simplified issue premium rates for substandard risks. They can also be used to implement discount and loading schemes for medical reimbursement insurance and help insurance companies implement proactive risk management.