• 한국정보과학회논문지:정보통신
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• 제36권5호
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• pp.425-436
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• 2009

최근 광 대역 통합 네트워크에서 고품질의 멀티미디어 서비스에 대한 사용자 요구가 증가하고 있다. 또한, 사용자 단말기기의 다양화 및 대화면 디스플레이 장치의 보급으로 다양한 형태의 서비스 품질(QoS)에 대한 요구도 증가하고 있다. 이를 위해 네트워크 관점에서 동적 큐 관리 알고리즘과 같은 인터넷 성능을 개선하여 서비스 품질을 보장하는 연구와 종단 관점에서 미디어의 품질을 보장하기 위한 SVC(Scalable Video Coding) 부호화 기법에 대한 연구가 활발히 진행 중에 있다. 그러나, 기존 동적 큐 관리 알고리즘은 비디오 부호화 기술의 본질적인 특성에 대하여 고려하지 못하여 서비스 품질을 보장하는 못하는 문제점을 가지고 있다. 본 논문에서는 현재 혼잡제어 알고리즘의 문제점을 개선하기 위해 NAL (Network Abstract Layer)의 헤더 내 TID (Temporal_ID)를 통해 SVC 부호화 기술의 특성을 파악하여 프레임간 의존성이 낮은 프레임의 패킷에 대하여 차등적으로 패킷을 폐기하는 75-AQM (Temporal Scalability - Active Queue Management) 알고리즘을 제안하였다. 제안한 75-AQM 알고리즘은 혼잡상황 시 차등적인 패킷 폐기를 통해 SVC 부호화 기법을 이용하는 스트리밍 서비스에 대하여 안정적인 비디오 복호화를 통해 멀티미디어 서비스 품질을 보장하였다.

• 한국생활과학회지
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• 제6권1호
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• pp.29-39
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• 1997

This study was to explore the effects of the preferences to housewives' employment and the type of household financial management leadership on the financial communication and equality of financial power perceived by working wives. From results of this study, the followings were concluded: 1. Housewives' income power leaded to the increase of their financial decision-making leadership and the more active participation to the financial matters. 2. The influences of husbands' leadership on the household finance were greater than one of wives' leadership. Depending on who has the financial management leadership, there were the differences on degree of the understanding and the discretion. 3. Although joint management style was popular today. the major management leadership was belonged to husbands based on the traditional value of sex role in the household financial management area.

• 한국농공학회논문집
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• 제59권5호
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• pp.61-72
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• 2017

The purpose of this study is to establish an integrated management system for the efficient management of rural water, to improve current problems, and to lay the foundations for active use of rural water information. We proposed a plan for informatization with a focus on establishing a database that can be used to provide customized services to users by applying advanced IT technology and to strengthen the management system of cities and counties with poor information. Data linkage and integration, user service development and integration system, application of IT technology, advanced decision support for rural water management, strengthening of city and county management system And the details of the implementation of the key project were presented.

• 대한안전경영과학회지
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• 제1권1호
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• pp.183-195
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• 1999

Most of chemical plant are using toxic and dangerous materials, inflammable and poisonous. There are many accidental dangers by escaping of fire, explosive and poisonous materials in case of high temperature and pressure. The accidents lead to taking employer's and local people's life and environmental contamination. Therefore, 27 small-medium chemical plant, which size is 30 ∼ 200 employees out of safety management agent ill the area of A was selected in this study. The problems of safety management and several countermeasures at the chemical plants was indicated through the analyzed data. Prior to this analysis, top managers' concerns, equipment maintenance for the safety management are needed. For the future, calamity prevention countermeasures by industrial disaster analysis are needed and active safety management programs are investigated for the industrial disaster prevention and productivity enhancement at the chemical plant.

• 대한안전경영과학회:학술대회논문집
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• 대한안전경영과학회 1999년도 추계학술대회
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• pp.97-108
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• 1999

Most of chemical plant are using toxic and dangerous materials, inflammable and poisonous. There are many accidental dangers by escaping of fire, explosive and poisonous materials in case of high temperature and pressure. The accidents lead to taking employer's and local people's life and environmental contamination. Therefore, 27 small-medium chemical plant, which size is 30∼200 employees out of safety management agent in the area of A was selected in this study. The problems of safety management and several countermeasures at the chemical plants was indicated through the analyzed data. Prior to this analysis, top managers' concerns, equipment maintenance for the safety management are needed. For the future, calamity prevention countermeasures by industrial disaster analysis are needed and active safety management programs are investigated for the industrial disaster prevention and productivity enhancement at the chemical plant.

• 대한안전경영과학회지
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• 제13권2호
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• pp.267-273
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• 2011

Since 'The Act on Private Investment of The Infrastructure' was established in 1994, private investment as well as government's investment in transport infrastructure has been active. However investment in transport infrastructure has more risks than others' due to uncertainty both in traffic volume and in construction cost. In the current appraisal procedure of deciding transportation infrastructure investment, instead of risk management, the sensitivity analysis considering only the changes of benefit, cost and social discount rate which are main factor affecting economic feasibility is carried out. Therefore the uncertainty of various factors affecting demand, cost and benefit are not considered in feasibility study. In this study the problems in current investment appraisal system were reviewed. Using Delphi technique the major factors which have high uncertainty in feasibility study were surveyed and then improvement plan was suggested in the respective of classic 4 step demand forecasting method. The range estimation technique was also mentioned to deal with the uncertainty of the future.

• 국제학술발표논문집
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• The 6th International Conference on Construction Engineering and Project Management
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• pp.693-694
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• 2015

While urban regeneration projects are currently under active execution in several old cities in Korea, there are few projects to improve the quality of life of rural communities. Considering the decline of the SOC system, deterioration of housing, and degeneration of economic feasibility, the purpose of this study is to provide solutions to realize an improved economic and social environment of rural communities through an integrated management system for traffic safety and water management systems. Therefore, this research used an Entity-Relationship Diagram to construct an integrated system for traffic safety and water management systems for Chungcheong rural communities. The ERD is prepared by depicting 7 relationships for 13 entities, including traffic accidents and agricultural products, and 26 attributes, including soil moisture and underflow storage. Consequently, it will be possible to set up a decision-making support system that can analyze and evaluate the regeneration index, technology, and management of the systems for Chungcheong rural communities, based on supplier and user perspectives

• 품질경영학회지
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• 제49권4호
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• pp.623-640
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• 2021

Purpose: As an excellent example of ethical management of public enterprises, it provides implications for excellent management strategies through continuous ethical management promotion to domestic public enterprises and general enterprises through case analysis of the Korea Gas Technology Corporation's ethical management system and implementation. Methods: A case analysis was conducted on the ethical management system and implementation of the Korea Gas Technology Corporation, focusing on ethical management, human rights management, and social contribution activities. Results: The Korea Gas Technology Corporation's ethical management case is significant as an example showing the long-term progress and development process of establishing and implementing the ethical management system. Starting with the establishment of a basic plan for ethical management in 2004, the Korea Gas Technology Corporation has continuously advanced its ethical management system and practical capabilities. Through this, it is possible to provide implications to other companies through benchmarking on major implementations at each stage, such as the introduction, institutionalization, settlement, and maturity of the ethical management system. Conclusion: It proposes ethical management execution performance management centered on the performance of each stakeholder, linkage between the ethical management strategy system and the organization's strategy system, classification of related subjects and roles in the ethical management promotion system, and active external communication.

• 가정과삶의질연구
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• 제27권2호
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• pp.269-280
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• 2009

The purpose of this study was to investigate the relationships among attachment with parents, self-differentiation, and stress coping strategies. The participants of the present study were 142 male and 161 female college students in Jeolla-Do province. The data were collected by self-administered questionnaire method. The major results of this research were as follows. First, there was significant positive correlation between the level of attachment with parents and self-differentiation, indicating that the greater the level of attachment with parents, the higher the level of self-differentiation. Second, active coping was associated with higher levels of differentiation of self and passive coping were associated with lower levels of differentiation. Third, there was significant positive correlation between the level of attachment with parents and active coping, indicating that the greater the level of attachment with parents, students used more active coping than passive coping. Finally, multiple regression analysis were performed to attachment with parents and self-differentiation. It was found that attachment with parents was the most powerful predictor of active coping and self-differentiation was the most powerful predictor of passive coping.

• Journal of Electrical Engineering and Technology
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• 제10권3호
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• pp.1275-1283
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• 2015

Markov chains for active tracking which assigns additional track illuminations evenly between search illuminations for a radar system are presented in this article. And some quantitative analyses on track formation range are discussed by using them. Compared with track-while-search (TWS) tracking that uses scan-to-scan correlation at search illuminations for tracking of a target, active tracking has shown the maximum improvement in track formation range of about 27.6%. It is also shown that the number and detection probability of additional track beams have impact on the track formation range. For the consideration of radar resource management at the preliminary radar system design stage, the presented analysis method can be used easily without the need of Monte Carlo simulation.