• 대한안전경영과학회지
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• 제24권2호
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• pp.77-85
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• 2022

This study tried to suggest a systematic improvement plan to prepare a civil safety insurance operation and management system by reviewing the operation and management status of civil safety insurance, which is operated and managed by each local government autonomously. In this study, the problems of the current civil safety insurance were analyzed by dividing them into the lack of systematic management of insurance items, overlapping coverage between insurance items, and deviations in compensation limits. As a systematic improvement plan, it was suggested to secure the systemic management of guarantee items, standardize compensation standards, prepare an integrated operation and management system, and provide financial support for local governments with poor financial independence. Since the problems and improvement plans for the civil safety insurance analyzed as described above are formed by exchanging and receiving a complex mutual influence, the institutional improvement plan for the operation and management system of the civil safety insurance is not only a specific part of the study, but also comprehensively current citizens. Based on the results derived from the analysis of safety insurance, it is concluded that alternatives must be found.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2018년도 춘계 학술논문 발표대회
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• pp.247-248
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• 2018

In order to secure the variability of long-life housing, dry walls are used. The composite gypsum board panel is the most frequently used infill system for the wall, and it is an excellent construction method in terms of constructability and economic feasibility. However, there are also problems such as the destruction of Ondol pipes at the bottom floor and being unable to fix the light weight steel frame (M-bar) when a variable composite gypsum board panel is used. To solve such problems, a wall with a method of fixing only the top part without fixing the bottom floor is developed, but it is difficult to identify the durability of ceiling frame according to the tensile force of stud and the safety according to the Stiffness and impact resistance (soft body) of ceiling frame. Therefore, this study verified the effectiveness of infill system for the wall by conducting experiment on the stiffness and impact resistance of composite gypsum board panel according to the reinforcement of ceiling frame (wooden frame, double saw-toothed bracket, Cross M-bar). As a result, it was possible to secure the safety of wooden frame while the impact resistance and the Stiffness of double saw-toothed bracket and cross M-bar were not secured.

• 디지털산업정보학회논문지
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• 제7권3호
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• pp.63-74
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• 2011

Credit cards are more convenient than cash of heavy. Therefore, credit cards are used widely in on_line (internet) and off_line in nowadays. To use credit cards on internet is commonly secure because client identification based security card and authentication certificate. However, to use in off_line as like shop, store, department, restaurant is unsecure because of irregular accident. As client identification is not used in off_line use of credit cards, the irregular use of counterfeit, stolen and lost card have been increasing in number recently. Therefore, client identification is urgently necessary for secure card using in off_line. And the method of client identification must be simple, don't take long time, convenient for client, card affiliate and card company. In this paper, we study a reform measure of the structure and transaction process for the safety improvement of a credit cards. And we propose several authentication method of short-and long-term for client identification. In the proposal, the client authentication method by OTP application of smart-phone is efficient nowadays.

• 대한안전경영과학회지
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• 제19권3호
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• pp.123-128
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• 2017

Logistics companies distinguish between medium-sized business and small business according to the size of enterprises. Of course, conglomerates are called global corporations. In this study, mid-sized companies over a certain size or more and those below are classified and decide the priorities among important factors to secure competitiveness in logistics companies are determined through AHP technique. Mid-sized companies are companies that can provide more than two logistics services. For example, they provide warehousing and transportation services in the same time. small companies are companies that can mostly provide one functional service. Warehousing, transportation, manpower, and information are listed as factors in this study. As a result of the study, medium-sized companies emphasized on the importance of transportation. When it comes to small companies, warehousing was emphasized as an important factor. Due to the simultaneous and contemporary service of warehousing and transportation in small-sized company, the reliable image of the company will be underestimated in case of delays in transportation. Competitiveness will also be weakened. Global corporations or conglomerates will start to consider relocating warehousing areas to others except for the central storage hub. They won't plan to invest directly, either. Therefore, it will be possible to secure competitiveness by providing the function of warehousing and to signed easily partnership.

• 상하수도학회지
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• 제30권5호
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• pp.533-543
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• 2016

Supplying clean and safe water to people is facing both quantitative and qualitative challenges. Due to climate change, access to freshwater becomes increasingly difficult, while pollution from various sources decreases the public trust in water quality. Managed aquifer recharge (MAR) which stores and uses surface water in aquifer is receiving attention as a new technology to secure freshwater. Recently, there is a global expansion in the attempt to combine general purification plants and hazard analysis and critical control point (HACCP) which manages all the process from raw material to consumer for food safety. This research is about an attempt to apply HACCP to the drinking water supply process using MAR to secure both quantity and quality of drinking water. The study site is a MAR plant being constructed in the downstream area of the Nakdong River Basin, South Korea. The incorporation of HACCP with MAR-based water supply system is expected to enhance the safety and reliability of drinking water.

• 한국통신학회논문지
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• 제39B권5호
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• pp.317-322
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• 2014

데이타 보안과 무결성은 유무선 통신 환경에서 데이터 전송 시에 중요한 요소이다. 대량의 데이터는 전송 전에, 통상 암호 연산 모드를 이용한 블록 암호 알고리즘에 의하여 암호화된다. ECB, CBC 등의 기존 연산 모드 외에 블록 암호 연산 모드로 RBF 모드가 제안된 바 있다. 본 논문에서는, 알려진 평문 공격 (known plaintext attack) 및 선택 평문 공격 (chosen plaintext attack)에 대한, RBF 모드의 안전성을 기존 모드들과 비교 분석한 내용을 소개한다. 분석 결과, 기존의 연산 모드들이 알려진/선택 평문 공격에 취약한데 반하여, RBF 모드는 이들 공격에 안전함을 알 수 있었다.

• 한국정보과학회논문지:정보통신
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• 제29권2호
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• pp.109-116
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• 2002

그룹에 기반한 통신 응용 서비스의 요구가 증가함에 따라 멀티캐스트 기반 구조에 대한 연구가 활발히 진행되고 있다. 하지만 멀티캐스트 구조에 대한 안전성과 효율성 및 확장성 부분에 대한 해결책은 아직 미비한 상태이다. 본 연구에서는 기존의 대표적인 멀티캐스트 키 관리 구조를 고찰함과 동시에 PKI(Public Key Infrastructure), Ipsec, 도메인 Subgroup 및 구조적 이원화 기법 등에 기초하여 확장성을 제공하는 안전한 멀티캐스트 키 관리 구조를 제안한다. 또한 새로이 제안된 방식과 기존의 방식들을 안전성, 효율성 및 확장성 부분에서 비교 분석함으로서 그 효용성을 검증한다.

• 해양환경안전학회지
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• 제12권3호
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• pp.225-231
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• 2006

해양은 인류의 생존에 필수적인 지구 환경 및 생태계를 구성할 뿐만 아니라 인류의 번영에 필수적인 다양한 자원을 제공하고 있다. 세계 주요 해양국가들은 국내외의 해양자원안보를 강화하고 해양안전안보의 영역을 확대하고 있으며 해양안보를 위한 국제협력을 강화하고 또한 이들 업무를 추진하는 전문기관의 위상을 강화하고 있다. 우리나라도 관할해역의 확대와 더불어 산업화, 과학기술의 발달 및 사회문화의 발달에 따른 해양안보의 수요급증, 해양안보의 국제협력 증대 등 해양안보의 환경이 급변하고 있는 바, 해양안보의 집행수단 확보, 정보수집능력의 강화. 교육훈련의 강화 등 해양안보의 확보를 위한 정책의 강화가 요구된다.

• 대한안전경영과학회지
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• 제23권4호
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• pp.73-81
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• 2021

Today's manufacturers must respond quickly to customer needs. In particular, make-to-order companies are constantly striving to satisfy customer demand for products in order to secure more favorable conditions in the future through bidding. In this bidding process, quotations play a very important role in providing favorable conditions. And the most important content that companies strive to satisfy their customers is the product's performance. Therefore, a company can attract customers and secure economic profits through good quotations, but it can be said that the first priority is to match the performance of the products requested by the customers. That is, when a company creates a quotation, it is important to structure the quotation according to the performance of the product. Thus, this paper intends to present a quotation management framework and a quotation BOM information model for constructing quotations efficiently in make-to-order manufacturing. And, in order to prove the usefulness of the proposed quotation management framework, we presents an case of the construction of an quotation management system based on the JAVA platform. As a result, the integrated quotation management system based on the proposed quotation management framework and quotation BOM has been successfully operated in a make-to-order company that manufactures marine engines.

• 한국안전학회지
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• 제14권4호
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• pp.204-210
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• 1999

본 논문에서는 정합필터의 데이터 베이스로 체적 홀로그램을 사용한 광 지문 인식 시스템을 제안하였다. VanderLugt 상관기에 사용되는 정합필터는 방대한 저장 능력과 실시간 랜덤 엑세스의 장점을 갖는 체적 홀로그램에 기록된다 데이터 베이스로 사용되는 지문 영상들은 각각 공간광변조기에 디스플레이 되어 퓨리에 변환 렌즈를 통과한 후 퓨리에 변환된 공간정합필터의 형태로 광굴절매질에 기록된다. 대용량의 데이터 베이스를 구성하기 위한 다중화 방법으로 스텝 모터를 이용하여 기준파의 각도를 회전하는 각다중화 기술을 사용하였다. 실험을 통해 본 시스템이 제한된 영역의 접근을 통제하기 위한 개인 인증용 안전 출입 시스템 및 크레디트카드, 여권, ID등의 위조방지에 이용이 가능함을 제시하였다