• Annual Conference of KIPS
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• 2020.11a
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• pp.472-474
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• 2020

in order to minimize damage from increasing personal information leakage and cyber risks, a new authentication system plan was devised that can be used in combination with existing authentication methods for the purpose of improving security. A more closed and extreme authentication method was established by installing a self-made security module using USB that can be easily utilized, enabling only individuals with registered USB to freely use information.

• Journal of the Korean Institute of Landscape Architecture
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• v.50 no.5
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• pp.13-29
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• 2022

According to the revision of the Convenience Act for Persons with Disabilities, parks and park facilities where the first park development plan is established after December 4, 2021 are mandatory, and parks must be equipped with convenience facilities for the disabled. Hence, this study aims to derive the improvements of the park evaluation index by analyzing the park certification evaluation index, the building certification evaluation index of park facilities, and the evaluation reports of the current certification status cases. As a research method, first, the certification of parks and park facilities were compared and reviewed with the Park Green Act, and differences in the certification process and certification performance were compared and analyzed. Second, differences and common items were derived by analyzing barrier free (BF)-certification evaluation indicators for parks and buildings. Third, improvement plans were derived after analyzing differences and problems in 4 BF-certified parks and four building certification cases of park facilities in certified parks, focusing on the self-evaluation report and examination results. As a result of analyzing the park and building evaluation indicators, the items for which the evaluation purpose, evaluation method, and evaluation items were commonly applied to 7 access roads for each facility, 5 parking areas for the disabled, 2 guide facilities for information facilities, 14 in 5 categories of sanitation facilities, and 1 for other facilities. In the case of sanitation facilities, there is no case where it was evaluated as a park. If the park does not have an attached toilet, the park is certified as a building. Hence, it would be essential to establish the concept of an attached toilet and discuss the application of the evaluation index on the park sanitation facility. The score of buildings in parks and park facilities was lower than that of the self-evaluation results, and the certification grades of buildings declined in three cases. The items with the highest standard deviation were BF walking continuity for parks and the path to the main entrance among access roads for buildings. As a result of analyzing the park and building evaluation results of 19 common evaluation items except for sanitary facilities, the difference in the grades of the evaluation items for each case site except for one item appeared. Therefore, applying common detailed calculation criteria for items evaluated in common with parks and buildings is needed. Since sanitation facilities have no cases of park certification and are not certified as buildings, it is essential to establish the concept of attached toilets and discuss the application of park sanitation evaluation indicators. It is necessary to develop an evaluation index suitable for the characteristics of the park, such as adjusting the items that are not evaluated in parks and establishing an evaluation index considering the ones of parks. It expects that this study would be used as primary data for improving park certification indicators.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.23 no.1
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• pp.235-255
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• 2012

The Reading Certification System is a form of reading education, a program in which homeroom teachers or librarians certify and reward students' reading and reading activities in order to raise motivation for reading. This study investigates and analyzes the management of the Reading Certification System in elementary school libraries in Gapyeong County, indicating problems and providing ways to resolve them by examining theories on school libraries' reading education and the Reading Certification System through a documentary survey and by conducting a survey of librarians and students on the categories of management, effectiveness, satisfaction levels, reading activities and reading motivation factors. An analysis of the survey results yielded the following suggestions for improvement: there should be a recommended books selection, a separate budget for a diverse reward system and more reading activities for students with low participation levels. I hope the results of this paper will be used as a reference when implementing the Reading Certification System in elementary schools, and that it will be an opportunity in changing perspective when applying the system.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.21 no.4
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• pp.759-766
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• 2017

In this paper, we preserve the transparency of digital contents by compressing and storing the medical image for a certain period so as to be safe and robust against various attacks of medical images. The proposed algorithm generates an encrypted image authentication code that extracts the feature value of the original image and combines it with the user's information. in order to extract hidden data, the authentication code is first decrypts the encrypted medical image and extracts the hidden data using the spatial characteristics of image. The proposed algorithm guarantees integrity when comparing extracted authentication code and newly generated authentication code for image authentication after directly inserting it into content itself through watermarking. We have proved various security of attack of image data and proved that the certification rate is improved to 98.4%.

• Journal of Engineering Education Research
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• v.11 no.1
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• pp.24-33
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• 2008

The purpose of the study was to analyze system of accreditation for mechanical engineering education between A university in Korea and M university in U.S.A. which were evaluated in 2007 under EC2000. Literature review through self-study report and homepage of two programs was used to accomplish objectives of the study. Strengths of U.S.A for accreditation evaluation system were systematic curriculum operation, design education with cooperation system, course-based evaluation system for program outcome, supportive circumstances for research of faculty and guidance to students. On the other hands, strengths of Korea were likely to use quantitative data for educational improvement and were able to systematic guide to students with portfolio. In the future, plan and research for design education, curriculum operation and program outcome evaluation are needed to establish ABEEK evaluation.

• Smart Media Journal
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• v.9 no.1
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• pp.30-37
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• 2020

Enforcing additional authentication to password-based authentication, in addition to attempting to increase the security of the password itself, helps to improve the security of the password authentication scheme. For a well-known problem of using strong passwords that differ from site to site, we propose a scheme for password generation and management with an inherent supplementary authentication. Like the so-called password manager, the scheme retrieves and presents a strong site-specific password whenever requested without requiring the user to remember multiple passwords. Unlike the existing methods, however, the scheme permits the password retrieval process to proceed only through the authenticated user's ownership verified smartphone. Hence, even for sites not enforcing or supporting two-factor authentication, the logon process can benefit from the scheme's assurance of enhanced security with its two-factor equivalent authentication. The scheme can also prevent an attacker from impersonating a user or stealing secrets even when the stored information of the server for password retrieval service or the user's smartphone is leaked.

• Journal of Aerospace System Engineering
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• v.17 no.1
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• pp.33-41
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• 2023

As seen in the case of the Boeing 737 Max accident, the proportion of aircraft software is rapidly increasing. However, it is vulnerable to safety issues. In case of domestic aircraft software, to operate a Light Unmanned Aerial Vehicle (LUAV) less than an empty weight of 150 kg, safety certification is required for an Ultra-Light Vehicle (ULV). However, software certification procedure is not included. Since the use of LUAVs has increased recently, software verification is required. This paper proposed a checklist of LUAV software that could be applied to LUAV referring DO-178C, an aviation software certification standard. A case study of applying the proposed checklist to the Model-based Development-based Helicopter Flight Control Computer (FCC) project currently used by domestic and foreign advanced companies and institutions was conducted.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 1997.11a
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• pp.1-2
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• 1997

인공위성용 추력기는 위성의 자세제어 및 궤도조정용 소형 액체추진기관으로서 개발기술은 인공위성 그 자체는 물론 위성 발사체와 유도 미사일의 추진기관에 이르기까지 다양하게 확장 적용할 수 있는 핵심 기반기술이다. 때문에 선진국으로부터의 기술 이전을 기대하기 힘든 품목으로, 자체 개발을 통해 위성이나 유도무기에 장착 운용시험을 하기에도 막대한 비용 때문에 회피되고 있는 실정이다. (주)한화는 정부에서 국책과제로 추진하고 있는 KOMPSAT 위성 개발사업에 참여하여 소형 액체 추진기관인 단일 추진제 추력기의 개발을 추진하였다 1994년 11월 사업착수 이래 미국 TRW사로부터 추력기 설계, 해석 및 제작 기술을 이전 받았으며, 추력기 제작/시험 시설을 완공하여 TRW사의 제품 품질 요구조건(product assurance requirements)에 의거 제작에 착수하였다. 현재 총 8세트의 이중 추력기 모듈(dual thruster module)을 제작 납품하였으며 또한 추력기 자체의 핵심 부품을 원부자재 가공으로부터 제작하고 이의 인증 시험을 성공적으로 완료하였다. 현재 국산화 추력기를 KOMPSAT 위성에 장착하기 위한 이중 추력기 모듈 제작이 진행 중에 있다.

• Journal of Global Scholars of Marketing Science
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• v.4
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• pp.87-109
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• 1999

국내의 인터넷 쇼핑몰 운영업체는 일부 업체를 제외하고 영세하다. 따라서 수많은 문제점을 안고 있다. 특히, 소비자가 상품을 구매한 후 발생되는 전자결제의 문제점으로 인터넷 쇼핑몰업체뿐만 아니라 전체 전자상거래시장의 활성화에 반하는 일도 발생한다. 따라서 전자결제의 문제점을 도출하고, 이의 분석을 통한 전체 전자상거래시장의 활성화에 일조하고자 한다. 먼저, 운영업체 자체의 문제점을 도출한다면, 국내 인터넷 쇼핑몰의 영세성으로 인한 투자자금의 부족, 신용카드회사에서 영세 인터넷 쇼핑몰에 고율의 카드수수료를 부과, 중소 인터넷 쇼핑몰의 신뢰성의 문제 등이 있다. 두번째로, 외부 환경적인 측면에서 보면, 표준화와 보안문제, 전자결제시 소비자가 편리하게 결제를 할 수 있도록 배려함이 부족, 소비자의 전자상거래에 대한 인식부족 등이 있다. 운영업체 자체의 대응방안과 외부 환경적인 측면의 대응방안으로 구분하면 다음과 같다. 즉, 운영업체 자체의 대음방안은 공동화와 협업화, 소비자에 대한 신뢰성 회복 등이 있고, 두번째로, 외부 환경적인 측면에서의 대응방안은 전자상거래 요소기술개발 촉진, 불합리한 거래관행의 지도가 필요, 표준화와 인증제도의 정착화가 조속화, 소비자인식의 전환을 위한 노력의 필요성 등이 있다.

• Proceedings of the KIEE Conference
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• 2006.11a
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• pp.335-336
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• 2006

초고압 지중송진선로에 적용되는 가교절연케이블은 전기적 특성의 우수성과 유지보수의 용이성 때문에 확대적용되고 있다. 345kV급 지중송전선로는 장거리 계통에 적용이 되고 있으며, 이에 따라 접속재 부분의 개발이 중요하게 되었다. 현재 154kV용 PMJ는 자체 개발되어 실계통에 설치 운용되고 있다. 345kV급 PMJ개발에 앞서 220kV급 가교절연 송전선로용 PMJ를 자체 설계 및 제조하여 세계적인 인증기간인 KEMA에서 제품의 신뢰성 인증을 받았다.