• Environmental and Resource Economics Review
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• v.17 no.3
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• pp.31-59
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• 2008

This paper is intended to analyze the toxic substances transmission between South Korea and U.S. through international trade, based on 2000 international input-output data and both country's toxic substances. According to result, The high TEI sectors are metal, chemical and general machinery in Korea, and the high TEI sectors of America are electric & electronics, Chemicals, Rubber and Plastics. Korea's export structure to America is more pollutant than America's export structure to Korea.

• Journal of Family Resource Management and Policy Review
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• v.17 no.1
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• pp.199-219
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• 2013

The purpose of the study was to investigate the effects of money transfer between generations on preparation behaviors for retirement, separated into assets and saving for retirement. The survey was conducted by targeting 422 married people across the nation. The factor of money transfer between generations was defined as the inheritance and gift variable. The data were analyzed using SPSS 20. Correlation, analysis of variance (ANOVA), and multiple regressions were utilized. The results indicated that preparation behaviors for retirement are affected by the economic independence of parents, inheritance, expenses for children's education, and marriage. Retirement assets were significantly affected by inheritance, the economic independence of parents, educational expenses for children, financial assets, and amount of debt, while the significant factors related to retirement savings were interests on retirement, income, wedding expenses for children, economic independence of parents, and educational expenses for children. It was concluded that the financial preparation for retirement ought to be expanded from one household's finances to finances between generations.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2018.05a
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• pp.17-18
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• 2018

19세기 이전부터 유럽에서는 해양치유자원을 이용한 치유요법인 탈라소테라피(Thalassotherapy)가 국민들의 건강을 지켜오고 있다. 탈라소테라피(Thalassotherapy)란 바다를 뜻하는 그리스어 'Thalassa'와 치료를 뜻하는 'Therapy'가 합쳐진 말로 해양치유자원을 이용해 신체적 정신적 건강을 증진시키는 활동을 뜻한다. 최근 우리나라에도 건강한 삶을 추구하는 인식의 변화 속에 다양한 해양치유자원을 이용하는 해양치유의 수요가 증가하고 있다. 본 논문에서는 해양치유산업의 활성화를 위한 해양치유자원의 현황 및 활용방안에 대해 연구하였다. 우리나라 해양치유자원의 분포를 확인하기 위해 동해, 서해, 남해, 제주도 등 4개의 권역으로 구분하여 전국을 대상으로 총괄도를 제작하였으며 국내외 해양치유자원을 이용해 작성된 문헌을 통해 해양치유자원의 이용현황에 대해 조사하였다. 또한 해양치유산업 선진국인 독일, 프랑스, 일본을 모델로 우리나라에 맞는 해양치유자원 적합기준을 연구하였다. 그 결과, 각 지역별 해양치유자원은 경기도:(머드, 염생식물, 염지하수, 해조류), 충청남도:(머드, 해조류, 천일염, 해조류), 전라북도:(머드, 염생식물, 해조류 해풍), 전라남도:(해조류, 해수, 천일염, 머드 해풍), 제주도:(용암해수, 염지하수, 태양광, 해수욕장), 강원도:(심층수, 태양광, 해조류, 해송림), 경상남도:(해조류, 해수욕장, 태양광, 해풍), 경상북도:(해조류, 태양광, 심층수, 염지하수, 해송림), 울산:(해조류, 태양광), 부산 :(해조류, 해수욕장, 태양광)이 있었으며 해양치유 자원을 이용해 작성된 국내외 논문은 265편(해수:101편, 머드:27편, 소금:12편, 해양환경:39편, 해양생물:18편, 해조류:68편)이 있었다. 해양치유자원 적합기준은 각 나라별 해양치유자원의 이용기준을 활용하여 자원별로 제시하였다.

• Journal of Advanced Navigation Technology
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• v.11 no.3
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• pp.252-258
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• 2007

There has been a lot of research done in scheme guaranteeing user's mobility and effective resources management to satisfy the requested by users in the wireless/mobile networks. In this paper, we propose a predictive resource allocation scheme based on ARMA(Auto Regressive Moving Average) prediction model to meet QoS requirements(handoff dropping rate) for guaranteeing users' mobility. The proposed scheme predicts the demanded amount of resource in the future time by ARMA time series prediction model, and then reserves it. The ARMA model can be used to take into account the correlation of future handoff resource demands with present and past handoff demands for provision of targeted handoff dropping rate. Simulation results show that the proposed scheme outperforms the existing RCS(Reserved channel scheme) in terms of handoff connection dropping rate and resource utilization.

• The Journal of Korean Association of Computer Education
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• v.10 no.4
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• pp.103-112
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• 2007

This study purposed to analyze problems in utilizing hardware and software invested for elementary and secondary school that were distributed through the education information project so far, and to make plans for substantial operation. In order to identify relevant problems and to draw up plans for substantial operation, this study analyzed relevant previous researches and investigated the current state of the utilization of educational information resources in school through question investigation. In addition, we visited elementary, secondary schools, and governmental departments of relevant personnel and had interviews with the people there. From this, we suggested the substance proposals of the educational information resources operation for elementary and secondary school. Therefore, the substance proposal to the information resource in education that was produced by this study would be useful to establish and execute relevant policy for elementary and secondary schools and governmental departments.

• The KIPS Transactions:PartC
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• v.15C no.1
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• pp.37-44
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• 2008

In order to minimize the signaling delay for a resource reservation on the new routing path after the handover of Mobile Node(MN) is completed, it is important to discover the crossover node where the old and new routing paths meet. With the 크로스오버 노드 being found, the signaling messages only need to be transferred on the changed part of the end-to-end path. The crossover node is generally discovered using the end-to-end Session ID(SID) of the established session between MN and Correspondent Node(CN). However, in the Hierarchical Mobile IPv6(HMIPv6) network, if the Mobile Anchor Point (MAP) reserves the resource by aggregate with the Home Agent(HA), the crossover node discovery cannot be performed in the general way since the aggregate SID that has established between the previous MAP and HA is different from the that of the current MAP and HA after MN's handover. In this paper, we propose a mechanism to discover the crossover node within the tunnel between the MAP and the HA in an HMIPv6 network, assuming that the Next Steps in Signaling(NSIS) is deployed for the resource reservation and the aggregate reservation is applied over the MAP and HA tunnel. The local repair required for the change of path is performed upon the crossover node discovery. The simulation results show that the proposed scheme reduces the signaling delay for the reservation and outperforms the existing scheme with respect to throughput during the handover.

• Environmental and Resource Economics Review
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• v.22 no.4
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• pp.581-612
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• 2013

Opinet is the system that has announced the daily domestic petroleum price data from April 2008. This study's goal is to examine if the domestic petroleum(gasoline and diesel) prices adjust their prices asymmetrically comparing before-Opinet with after-Opinet. The results of this study found the evidence of asymmetric domestic petroleum prices before the Opinet and the evidence of symmetric domestic petroleum prices after the Opinet. Also the domestic petroleum prices after the Opinet adjust upward/downward nearly twice as fast when its actual value is below/above its equilibrium. According to this study, the domestic petroleum market works more efficiently than before.

• Journal of the Korea Computer Industry Society
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• v.2 no.4
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• pp.455-470
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• 2001

This paper is focused on the traffic characterization for the efficient transmission of the VBR video source in the ATM network. For the traffic characterization, low traffic monitoring technique is applied and the dynamic VBR characterization method is suggested to satisfy the delay requirement. The dynamic VBR method uses the token bucket algorithm buffering though Cumulative Constraint Function. According to the Cumulative Constraint Function, the packet initially started transferring at the peak rate and the token bucket provided proper amount of buffer for traffic after a certain period of monitoring. It also reduced the network resource bandwidth through renewal of the cumulative frame and changed the rate from the previous frame information. It requires only small amount of monitoring and causes little overhead. In addition, it lowered the complexity of Deterministic Constraint Function to 0(n) and mapped the token rate and token depth to the token bucket. This study shows less network resource consumed than the previous method, comparing and analyzing the result of simulations.

• Journal of Agricultural Extension & Community Development
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• v.11 no.1
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• pp.209-216
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• 2004

베트남은 국토의 3/4이 고산지대이며 1천만ha의 산림자원을 보유하고 있으나 비효율적인 산림관리로 인해 산림의 규모와 질이 점차적으로 악화되어 왔다. 국가기관이 관리하는 대규모산림과 개인소유의 산림은 비교적 관리가 잘 되는 반면, 지역사회가 관리하는 고산지대의 산림은 제대로 관리되지 뭇하고 있다. 이 연구는 베트남 지역사회 산림관리의 실제와 문제점들을 고찰하였다. 지역사회에 의한 산림관리는 새로운 제도라기 보다는 이미 지역주민에 의해 개발되어진 전통적인 관리방식으로 1955년 토지개혁 이전부터 이용되어 왔다. 지역사회산림은 지역에 적합한 지식과 제도에 따라 관리됨으로 산림의 보호와 지역사회 발전에 긍정적인 효과를 가져왔었음에도 여건 변화에 적응하지 못한 문제점을 내포하고 있다. 따라서 산림의 효율적 관리를 위해서는 물리적, 제도적 여건의 많은 변화속에서 지역사회 산림의 회복과 관리를 위해서 지속적인 실험과 연구가 수행되어야 할 것이다.

• Proceedings of the Korea Information Processing Society Conference
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• 2005.11a
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• pp.769-772
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• 2005

그동안 우리는 분산응용을 구성하는 자원들을 하나의 논리적인 그룹으로 관리하기 위한 연구를 수행하여 분산객체그룹 프레임워크(Distributed Object Group Framework, DOGF)를 구축하였다. 또한 DOGF 기반에서 분산응용의 복잡한 개발절차를 최소화하고, 이전에 개발된 분산자원들의 재사용성을 효율적으로 제고할 수 있는 분산프로그램 개발도구인 DPD-Tool(Distributed Programming Developing Tool)을 개발하였다. 본 논문에서는 우리가 개발한 GUI 지원 DPD-Tool을 이용한 분산응용의 개발 편리성과 DOGF가 지원하는 그룹관리 분산서비스의 수행성을 검증한다. 이를 위해 GUI 기반에서 분산응용의 예를 들어 서버와 클라이언트 측의 개발절차를 제시하며, 이로부터 DPD-Tool이 DOGF의 지원 서비스를 통하여 그룹화 분산응용 내 중복자원들을 효율적으로 이용하는지 그 수행결과를 확인한다.