• Proceedings of the KAIS Fall Conference
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• 2010.05a
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• pp.77-80
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• 2010

일반적인 메일 시스템은 제 3자의 악의적인 목적으로 메일의 내용을 열람했을 경우 모든 내용이 그대로 노출 된다는 위험성을 내포하고 있다. 이러한 문제점을 해결하기 위해서, 본 논문에서는 ARIA를 이용한 메일 암호시스템을 제안한다. 제안한 암호시스템은 메일 내용을 송 수신 하는 쌍방 간의 합의된 비밀 키로 암 복호화하여 악의적인 의도로 메일에 접근했을 경우에도 비밀 키가 노출되지 않는 한메일 내용을 알 수 없도록 설계하였다.

• Journal of the Daesoon Academy of Sciences
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• v.1
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• pp.445-462
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• 1996

본 연구는 대순진리회의 종교 사상에서 제시하는 바람직한 인간 관념인 인존사상을 통하여 그것이 내포하고 있는 교육적 가치성을 제고하는데 있다. 또한 본 연구는 대순사상 자체가 가지는 학문적 의의를 밝히고 그것의 교육학적 해석을 통하여 그 학문적 영역의 저변을 확대하는데에도 의미가 있다고 하겠다. 근세 조선후기사회의 종교·문화적 배경을 검토함으로써 대순사상이 당시대의 기층 민중들에게 어떠한 종교적 메시지를 전달하고 있는가를 살피고 또한 그 기본구조를 분석하여 대순사상이 제시하는 종교적 구도를 개념화 하고자 한다. 이러한 연구의 패러다임 위에서 대순사상이 지향하는 교육이념을 중심으로, 교육적 이상 실현의 가능성을 지닌 내재적 존재로서의 인존의 형성이론을 고구하여 교육적 인간상의 이상적인 모델을 확인한다. 또한 인존사상에서 표방하는 교육적 시사성이 현대 교육의 제문제에 어떠한 비전을 제시하고 있는지를 검토해 보고자 한다.

• Applied Chemistry for Engineering
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• v.20 no.3
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• pp.339-345
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• 2009

The graft copolymerization of acrylonitrile-EPDM-styrene (AES) was investigated under various reaction conditions such as the concentration of initiator, the content of diene and viscosity of EPDM, and the concentration of solvents. The conversion increased but the molecular weight and the rubber particle size decreased with the concentration of initiator. The graft ratio(GR) increased at low concentrations of the initiator but, after the maximum value, it gradually decreased with the concentration of initiator. Toluene as a single solvent gave the highest conversion and the mixture of ethyl benzene and toluene was better than toluene. The rubber particle size increased with the viscosity of EPDM and the graft ratio and the number of rubber particles with occluded SANs increased with the content of diene.

• International Commerce and Information Review
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• v.15 no.2
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• pp.233-260
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• 2013

Regional Trade Agreements(RTAs) are a prominent feature of the multilateral trading system and have been an important trade policy tool for WTO Members. RTAs has been steadily increasing over the last ten years and this trend will be further strengthened by the many RTAs being proposed and those currently under negotiation. There has been a recent increase in the Regional Trade Agreement (RTA) making it necessary to determine the most effective method for taking advantage of anti-dumping measures between member countries of the RTA. Due to the complexity of anti-dumping laws and abuse of discretion by each nation, however, the basic goal of the RTA has not come to fruition. The results of this study found that the strengthening of anti-dumping measures in the RTA is desirable. A plan to use competition instead of anti-dumping measures must be implemented. For Korea, it will be necessary to develop the fundamentals for the globalization of competitive rules to keep pace with the continuous expansion of FTA.

• Journal of the Economic Geographical Society of Korea
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• v.27 no.3
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• pp.240-256
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• 2024

Through investigating the Socialist Enterprise Responsibility Management System, which forms the core of economic management improvement measures during the Kim Jong Un era, this article examines the changes of North Korea's state-owned enterprises management method and the tasks of corporate governance reform. The implementation of the Socialist Enterprise Responsibility Management System implies the regime's intention to institutionalize the market tendencies and at the same time increase its control of the economic sector. This paper analyzes the characteristics of the new enterprise management system and demonstrates the problems of the reform measures. This article could help in the further understanding of North Korea's recent economic situations and limitations of the state-owned enterprise reform in the Kim Jong Un era.

• Journal of the Korean Chemical Society
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• v.53 no.1
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• pp.27-33
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• 2009

A sensitive technique for the determination of trace Cd(II) in various real samples after preconcentration onto microcrystalline p-dichlorobenzene loaded with 2-mercaptobenzothiazole was developed. Several experimental conditions such as the pH of the sample solution, the amount of chelating agent 2-mercaptobenzothiazole, the amount of adsorbent p-dichlorobenzene-2-MBT, and the flow rate of sample solution were optimized. The interfering effects of various concomitant ions were investigated. Cu(II) interfered with more seriously than any other ions. However, the interference by Cu(II) could be overcome sufficiently by adjusting tartrate ion concentration to be 0.01M or by controlling the amount of 2-mercaptobenzothiazole contained in 0.20 g p-dichlorobenzene to be 0.12 g. The dynamic range, the correlation coefficient ($R^2$) and the detection limit obtained by this proposed technique were $0.5{\sim}30$ ng $mL^{-1}$, 0.9962, and 0.39 ng $mL^{-1}$, respectively. Thus, good results were obtained by the use of p-dichlorobenze as adsorbent matrix. For validating this proposed technique, the aqueous samples(wastewater, stream water, and reservoir water) and the plastic sample were used. Recovery yields of $93{\sim}104$ % were obtained. By F test, these measured data were not different from ICP-MS data at 95 % confidence level. Based on the results from the experiment, it was found that this proposed technique could be applied to the preconcentration and determination of Cd(II) in various real samples.

• Communications for Statistical Applications and Methods
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• v.15 no.2
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• pp.245-254
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• 2008

According to the $7^{th}$ reform of high school education curriculum, contents on probability and statistics in mathematics of high school curriculum have been expanded compared to the previous curriculum. Thus if the curriculum contains the contents to achieve the goals for probability and statistics, more efficient education on statistics is expected to meet the needs of information age. In this thesis, we studied through network analysis if contents on probability and statistics in mathematics of high school curriculum are composed to achieve the goals. We reviewed contents on probability and statistics in mathematics of the $7^{th}$ reform of high school curriculum whether they are conformed the purpose and direction of the reform or not. As a result, the concept of probability distribution and statistical estimation with a random variable was described clearly. But, census and sample survey were not connected with other items. In a part, there were expressional mistakes.

• The Journal of the Korea Contents Association
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• v.11 no.2
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• pp.397-407
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• 2011

The Open Position System is a new personnel management system started in korea, 1999.Open Position System have purpose to use outstanding talents and to expertise from both public and private sector. Korean government adapted open position system in order to use the right man in the right place. And Korean government incresae application of Open Position System. But, in spite of strong good point of Open Position System, We have limitation to apply Open Position System in police organization, generally. Because police have unique characteristics compare with other public organization. There is constant controversy concerning unique characteristics of police organization. Now, Korean police adopt Open Position System in few division: Chiep of Driver's License Agency, Director General for Audit and Inspection of Nation police Agency, Chiep of police hospital. Therefore, this study explore, extention possibility of Open Position System in Korean police.

• Food Science of Animal Resources
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• v.23 no.2
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• pp.186-192
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• 2003

The health benefits of friendly bacteria first came to the attention of the general public in 1908, when Dr. Elie Metchnikoff, a Russian biologist, wrote The Prolongation of Life. The longevity may be, in part, due to the antioxidative ability of lactic acid bacteria. However, the antioxidative effect of lactic acid bacteria has been reported only recently. Many kinds of reactive oxygen species can be formed in the human body and in food system, oxidative stress plays a significant pathological role in human disease. Antioxidants are effective for the reduction of oxidation induced by oxygen radicals by scavenging reactive oxygen species. Various synthetic and natural antioxidants have been reported, but there are doubts about the safety and long term effects on health. Antioxidants from natural sources are likely to be found more desirable. An elevated scavenging ability of reactive oxygen species would be a good property for commercially applied lactic acid bacteria. Antioxidant supplement or food containing antioxidants would be greatly applied for the reduction of oxidative damage for human body, and lactic acid bacteria are potentiated candidates for the production of functional foods or natural antioxidant supplements.

• Fire Science and Engineering
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• v.31 no.5
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• pp.87-94
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• 2017

This paper was dealing with the change of academic meaning for activities of volunteer firefighter by enforcement of "Act on Volunteer Fire Brigade Establishment & Operation". For that, we checked the references including definition, origin, history, activities, and characteristics of volunteer firefighter. In addition, we confirmed the differentiating activity characteristics between the volunteer firefighter and the general volunteer. In result, the characteristics of the volunteer firefighter activities did not have with the spontaneity of the general volunteer activities due to Article 3 (appointment of volunteer firefighter), Article 4 (dismissal of volunteer firefighter), and Article 9 (working conditions of volunteer firefighter, etc) of "Act on Volunteer Fire Brigade Establishment & Operation". Finally, we could not interpret that the characteristics of the activities of volunteer firefither is same with the general volunteer activities. The result in this paper is expected to serve as a basis for the research of the volunteer fire department in Korea.