• 한국정보과학회논문지:정보통신
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• 제29권5호
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• pp.466-472
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• 2002

본 논문에서는 계층적 셀 구조에서 umbrella 셀과 overlaid 셀 사이의 부하 분배 문제를 연구한다. 부하 분배 정책을 제안하고 HSDPA에서 인터넷 트래픽을 전달하는 경우를 시뮬레이션하여 제안된 정책의 성능을 평가한다. 평가 결과, 마이크로 셀이 피코 셀의 부하를 잘 분담해주는 것으로 나타났으며, 특히 특정한 피코 셀 집단에 큰 부하가 가해졌을 경우에 그 효과가 크게 나타났다. 이 정책을 사용할 경우, 비정상적인 큰 부하에 대처하기 위해 필요한 용량을 확보할 필요가 없어지므로 시스템 설치비용을 줄일 수 있게 된다.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2002년도 추계종합학술대회
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• pp.405-408
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• 2002

클러스터는 컴퓨터 네트워크로 연결되어 있는 컴퓨터들로 구성된 비용대비 효과적인 병렬 처리 환경이다. 클러스터의 특징으로는 노드의 이기종성, 로드의 다양성, 네트워크 로프의 다양성 등이다. 이러한 특징들은 병렬 프로그램의 수행 성능에 영향을 주기 때문에 클러스터를 위한 부하 분할은 병렬 프로그램의 성능에 많은 영향을 준다. 본 논문에서는 부하 분할 알고리즘인 GSS를 수정한 aGSS 알고리즘을 제안한다. 본 논문에서 제안하는 aGSS 알고리즘에서는 각 노드가 처리할 태스크의 크기를 결정할 때 각 노드의 BogoMIPS를 이용한다. 실험 결과에 의하면 제안된 aGSS 알고리즘이 이기종으로 구성된 클러스터에서 효과적으로 부하를 분할하며, 따라서 병렬 프로그램의 수행 시간을 감소시킬 수 있다.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2021년도 봄 학술논문 발표대회
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• pp.321-322
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• 2021

This study is to develop a non-contact construction project management solution that can reduce cost and construction period through on-site information sharing, minimizing contact with others by COVID19, and improving the productivity of the construction industry. Decisions, checklists, and execution rates of construction costs can be checked with smart devices through sharing on-site photos and videos, exchanging opinions. Details and checklist data stored on cloud servers of sites that apply non-face-to-face construction project management solutions will be used as data for analyzing amounts and construction periods depending on the size of the construction. Real-time field information sharing will reduce expected problems and waste factors, expand communication channels with users to prevent or minimize construction disputes and claims, and contribute to the expansion and growth of new research industry markets in construction technology.

• 국제학술발표논문집
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• The 9th International Conference on Construction Engineering and Project Management
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• pp.1106-1113
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• 2022

Cost segregation helps reduce tax liabilities by reclassifying real property to personal property and accelerates tax depreciation of a property. A typical cost segregation study requires much time and high costs. This study proposed a BIM integrated cost segregation process that can be applied to any commercial building project. The proposed BIM-based cost segregation process was verified in a new commercial construction project. It approved that this approach can: (1) increase the cash flow for the owner and provide assistance to tax-paying enterprises; (2) enable the contractor to use it as an added value in the bidding process; (3) realize data sharing in a common platform to improve the cost segregation study efficiency and reduce costs and errors; (4) contribute to the asset management in the life cycle of buildings while filling in the blank of cost segregation process. Future studies will focus on the automation of cost segregation and asset management in building construction's life cycle.

• 한국정보통신학회논문지
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• 제16권10호
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• pp.2199-2206
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• 2012

인터넷 환경에서 신원 인증 서비스를 제공하는 신원 제공자의 신원 인증 결과를 다수의 서비스 제공자가 공유하는 신원 인증 공유는, 반복적인 등록 회피와 싱글 사인온을 통한 사용자 편의성 제고, 신원 제공자로부터의 신원 인증 서비스 아웃소싱을 통한 서비스 제공자의 비용 절감, 그리고 제한된 수의 통제된 신원 제공자에게 한정된 신원 정보 노출을 통한 프라이버시 보호 등의 측면에서 몇 가지 중요한 장점을 제공한다. 그러나 신원 인증 공유 기술이 글로벌 인터넷 차원에서 광범위하게 적용되기 위해서는 신원 제공자, 서비스 제공자, 그리고 사용자간에 신원 인증과 관련된 신뢰 문제가 선결되어야 한다. 본 논문은 신원 인증 공유를 위한 신뢰 프레임워크의 현황을 분석하고, 분석 결과를 바탕으로 신원 인증 공유를 위한 동적인 개방형 신뢰 프레임워크를 제시한다.

• 대한예방의학회:학술대회논문집
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• 대한예방의학회 1993년도 제45차 추계 학술대회 연제집
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• pp.157-158
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• 1993

• 농촌의학ㆍ지역보건
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• 제16권2호
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• pp.179-194
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• 1991

Despite its universal coverage of health insurance, the rural health insurance program(RHIP) stands at the crossroads in Korea. The RHIP has weaknesses in stability of financing, problems of inequities in the provision of health services and has suffered from high cost of running the program. The author has analyzed these problems from the perspective of health insurance policy and presented several options for improvement. First of all, this study urged the importance of a firm Governmental commitment of RHIP with the 50% subsidization of contributions as the Government had promised, instead of the current 40%. This can be justified from the 20% subsidization by the Government for the contributions of private school teachers and their dependents, who belong to richer segments of the population. Second, various cost containment measures ought to be sought curbing the rising demand for medical through strengthening health education and increasing individual responsibility, and tightening the claim review process. Third, this study requires the Government to run a demonstration project on the introduction of case payment system for primary health care. Fourth introducing an income-related cost sharing scheme is another possibility. Reforming the cost sharing formula for large medical expenditures is recommendable for a beginning. This measure can take the form of tax credit for medical expenditures of the poor. Fifth, the degree of financial adjustment among health insurance plans should be levelled up for enhancing stability of RHIP and social solidarity. Sixth, health policy should be redirected toward development of rural health resources and higher priority should be put on relieving difficulties in access to care. Seventh. the insurance plan owned-hospital needs to be developed or provision of health services in the medically underserved areas, and the need of such facilities is particularly acute for geriatric care, rehabilitation and renal dialysis, etc. Eighth, more generous insurance benefits are required of the elderly who are suffering the most : elimination of the maximum 180 days of benefit period and provision of glasses and artificial dentures, etc. Ninth. the economies of scale principle is working for the operating expenses of regional self-employed insurance plan. Thus, measures should be instituted to pursue an optimum size of health insurance plans. Lastly, excessive dependence on exclusion items is an evil so that some radical remedies are urgently required to cut them.

• 전력전자학회:학술대회논문집
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• 전력전자학회 2017년도 추계학술대회
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• pp.33-34
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• 2017

This paper presents a linear droop control scheme based on the generation costs of DGs in an autonomous DC microgrid. Unlike the proportional power sharing of the conventional droop control, in the proposed control algorithm, the minimum output voltage range is adjusted and the droop coefficients are regulated according to the generation costs of DGs. As a result, the DGs with lower costs supplies more power in comparison with those with higher costs. Therefore, total generation cost of the system is reduced significantly. The proposed method is simple to implement and it does not require the centralized controller and communication links.

• Management Science and Financial Engineering
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• 제16권3호
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• pp.1-20
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• 2010

In this paper, the impact of various system parameters such as the parameters of actual demand process, the review periods and the lead times, under each combination of inventory policies and information sharing, on the long run average inventory cost per period incurred at each participant in a supply chain, is considered. For this purpose, numerical studies are conducted, from which some valuable information as to how sensitive our long run average inventory cost per period are as the model parameters change is gleaned, from which, in turn, some managerial insights are gleaned in order for industry practitioners to perform better in supply chain management.

• 전자공학회논문지A
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• 제32A권10호
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• pp.81-92
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• 1995

In this paper, we present a high-level synthesis system that generates area-efficient RT-level datapaths with multiport memories. The proposed scheduling algorithm assigns an operation to a specific control step such that maximal sharing of functional units can be achieved with minimal number of memory ports, while satisfying given constraints. We propose a measure of multiport memory cost, MAV (Multiple Access Variable) which is defined as a variable accessed at several control steps , and overall memory cost is reduced by equally distributing the MAVs throughout all the control steps. Experimental results show the effectiveness of the proposed algorithm. When compared with previous approaches for several benchmarks available from literature, the proposed algorithm generates the datapaths with less memory modules and interconnection structures by reflecting the memory cost in the scheduling process.