• 디지털콘텐츠학회 논문지
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• 제1권1호
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• pp.23-37
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• 2000

EDI는 은행업무, 무역, 의학, 출판 등의 다양한 활동이나 사업에 관련된 메시지를 컴퓨터들간에 상호 교환한다는 개념이다. 그러므로, 보안성, 신뢰성 및 특수 기능성이 EDI 시스템의 절대적 요구사항이다. 이러한 요구사항 중 보안성에 대한 요구사항을 만족시키기 위한 접근제어 모델을 설계하고자 한다. 정보시스템에 있어서의 접근제어는 실체에 대한 모든 접근은 보안정책에 의해서 정해진 접근모드나 규칙에 따라 발생한다는 것을 보장하기 위한 것이다. 본 논문에서는, 접근제어 모델을 위한 보안정책을 신분기반 정책, 규칙기반 정책, 직무기반 정책 측면에서 제시한다. 정의한 보안정책을 수행하기 위해서 유도된 접근제어 규칙과 오퍼레이션에 기초한 안전한 EDI 서비스를 제공하기 위한 접근제어 모델을 설계한다. 제안한 접근제어 모델은 EDI 메시지에 대한 무결성, 비밀성 및 흐름제어를 제공한다.

• 토지주택연구
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• 제2권3호
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• pp.227-238
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• 2011

There are similarities between Korea and Japan in terms of national planning and development system and housing policies. Japan has suffered from great shifts of social and economic systems due to skyrocketing land prices for three times and the collapse of the bubble economy after the Second World War. The study reviews historically important changes in the national territory and housing policies for last 60 years in Japan. It also investigates changing trends and characteristics of many socioeconomic indicators with regard to population, housing and other fields in response to these policies. First of all, Japan has experienced significant economic growth before and after the 1960's, and the era of national rebuilding projects in the 1970's. After then, the period of the bubble economy has emerged since 1980; however, it suffered from skyrocketing land values between the late 1980's and the early 1990's, and the collapse of Japanese bubble economy in the early 1990's. In response, many urban regeneration policies and projects were proposed to recover the national economy since 2000. It is found that these national territory development and housing supply policies throughout the country have been influenced by the changing characteristics of social and economic conditions. Since the housing supply ratio in 1968 reached up to around 100% on average, Japan has been focusing attention to improving the residential and living quality for existing housing stock rather than supplying new housing units through large-scale new town projects. These experiences are full of helpful suggestions for our future housing and urban regeneration policies as we reach to more than 100% of housing supply ratio on average.

• 산업경영시스템학회지
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• 제19권40호
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• pp.341-349
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• 1996

In this paper, we deal with the problem of maintenance policies for an air filter system in clean room. Two types of maintenance policies are considered, one based on the reliability of equipment and the other one determined by the total cost including minimal repair cost. For these models, we obtain the structure of the optimal maintenance Policy which minimize the total cost. Finally we give the numerical example.

• 한국정보기술응용학회:학술대회논문집
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• 한국정보기술응용학회 2005년도 6th 2005 International Conference on Computers, Communications and System
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• pp.297-300
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• 2005

Especially, system security is very important in the ubiquitous environment. This paper proposes a protecting scheme for security policies in Firewall and intrusion detection system (IDS). The one-way hash function and the symmetric cryptosystem are used to make the protected rules for Firewalls and IDSs. The proposed scheme could be applied in diverse kind of defense systems which use rules.

• 한국도서관정보학회지
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• 제32권4호
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• pp.449-466
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• 2001

본 논문은 대학도서관의 지역사회 개방 현황을 파악하고자 도서관 홈페이지를 조사하여 24개의 도서관을 선정하고 각 대학도서관의 특별이용자제도와 대출정책을 조사, 분석한 것이다. 또한 외부이용자를 위한 특별이용자제도 도입시 고려할 사항을 다루었다.

• 대한전기학회논문지:시스템및제어부문D
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• 제49권5호
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• pp.264-268
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• 2000

In discuss how the existing study results that decide optimum release time are rational and reasonable, considering the cost and reliability simultaneously in this paper. As a study method this paper examines the proposed results and their methodologies centering around the existing related papers for the general cost-reliability optimal release policies, especially their limitation for the derived results.

• The Journal of Asian Finance, Economics and Business
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• 제7권8호
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• pp.599-611
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• 2020

The purpose of this study is to explore and empirically analyze the factors affecting the financial performance of Korean small- and medium-sized manufacturing companies, which are relatively insufficiently researched, in terms of human resource management (HRM). In particular, this study intends to examine the human resource management activities focusing on the individual influences of workers' attitudes on systems and policies as well as jobs and organizations. This study reviews previous research and discussions on the human resource management system, as well as the organization and job-related attitudes and financial performance of workers, for the formulation of two hypotheses. Among the HCCP data, the hypothesis was verified through reliability and correlation analysis and stepwise multiple regression analysis for small- and medium-sized manufacturing enterprises. The results show, firstly, that human resource systems and systems have the same effect, but there were differences in the degree of impact. Secondly, job satisfaction has a statistically significant influence on financial performance. Lastly, all worker/employee attitude determinants are statistically significant for both job satisfaction and organizational commitment. HRM, previously relatively overlooked, provided theoretical and practical implications by demonstrating the direct impact on financial performance and the impact of individual human resource management systems and policies.

• 한국경영과학회:학술대회논문집
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• 대한산업공학회/한국경영과학회 2004년도 춘계공동학술대회 논문집
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• pp.467-470
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• 2004

MANPro-based control is a novel control paradigm aimed at intelligent manufacturing systems on the basis of mobile agent-based negotiation process (MANPro). MANPro is a negotiation mechanism based on the agent-based control architecture and, especially, it adapts a mobile agent system called N-agent for the negotiation process. N-agent travels around the network of distributed manufacturing systems to acquire information, and it makes a decision for system control according to the obtained information. MANPro includes communication architecture and information architecture for intelligent shop floor control. MANPro also considers the following issues: (1) negotiation mechanism, (2) single-agent internal strategic policies, and (3) information model. Communication architecture concerns the first issue of the negotiation mechanism. It provides information exchanging mechanism with functional modules. In specific, N-agent is equipped with an intelligent reasoning engine with a built-in knowledge base. This reasoning engine is closely related to the single-agent internal strategic policies of the second issue. Finally, ontology-based information architecture addresses information models and provides a framework for information modeling on negotiation. In this paper, these three issues are addressed in detail and a framework of MANPro-based control is also proposed.

• 산업융합연구
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• 제1권2호
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• pp.141-172
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• 2003

To enhance Social Welfare and Public Interests, government has been enforcing the policies that induce private Sector to participate in the Public Service. In general, these policies consist of the direct or indirect supporting systems, including the advantages of taxation applicable to Private Sector that takes part in Public Service. Of the various supporting systems taken by government, the privilege from the taxes is known to the most important supporting system. The representative exemple is the tax beduction of amounts donated to the not-for-profit organizations. That is to say that donations can be deductible from taxable amounts on assessing inheritance tax and gift tax. Generally much higher cumulative tax rates are applied to the laws of inheritance tax and gift tax than the other taxes in order to redistribute the social wealth and to restrain the concentration of the wealth. On the other hand, the special exemption from the taxes can be applied to not-for-profit organization according to the standards of the relevant lows and regulations, because not-for-profit organization usually performs the partial role of government in Public Service. The perpose of this study is to find the systematical support that the not-for-profit organizations can practice Public service more efficiently than government. This study approaches the subject by means of examining current taxation systems of inheritance tax law and gift tax law and developing systematic alternatives that can make inefficient parts in taxation systems more reasonable.

• 한국정보통신학회논문지
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• 제9권6호
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• pp.1364-1370
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• 2005

데이터베이스 보안을 위해 주로 정책기반 접근 제어를 이용하며, 이 중 역할 기반 접근 정책의 도입은 강제적 접근 제어 정책과 임의적 접근 제어 정책의 단점을 보완하고자 하는 노력으로, 이를 통하여 적용 환경의 상황에 적합한 보안 정책을 유연하게 시행할 수 있다. 최근 사용자의 다양한 보안 요구사항을 수용하기 위해 정책기반 접근 제어 정책을 변형 및 적용하여 데이터베이스 보안 시스템을 구현한 바 있다. 이러한 시스템에서 보안 정책은 새로운 접근 제어가 필요할 경우 정책을 추가 생성하므로 같은 사용자에 따른 정책들의 중복 현상이 나타나 시스템의 성능을 저하시킬 수 있다. 본 논문에서는 기존의 접근 제어 정책을 변형 및 조합하여 적용한 데이터베이스 보안 시스템에서 역할 기반 접근 제어 정책을 적용하는 과정에서의 정책 중복의 문제를 소개하고 이를 해결하기 위한 정책 관리 모듈을 제안하고자 한다. 정책 관리 모듈은 사용자별로 생성되는 정책에 대하여 중복여부를 검사하고 중복된 정책에 대하여는 삭제하며, 사용자 별로 이미 생성된 정책에 데이터 그룹에 대한 접.근 제어 정책을 통합할 수 있도록 구현하였다.