• Environmental Sciences Bulletin of The Korean Environmental Sciences Society
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• 제10권S_3호
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• pp.97-106
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• 2001

To improve the water quality, particularly for sea bathers, the behaviour of wastewater from sewage outfalls in water adjacent to Swansea, UK, was studied using a mathematical model. The water quality in the sewage receiving basin was determined using factors like the outfall diffuser location(distance from land boundary), sewage treatment scheme, discharge time, and bacteria decay rate, etc. With respect to these factors, an optimal strategy for sewage discharge was then investigated to minimize bacteria levels along the bathing beaches. As water quality criteria, predicted faecal coliform levels were monitored along the coast adjacent to the outfall locations. The resultant values were compared with EC Mandatory(<2000, 95 % of 20 samples) and Guideline Standards(< 100, 80 % of 20 samples). For the advective-diffusion equation, the non linear advective terms were represented using the ULTIMATE algorithm and the third-order accurate QUICKEST scheme to avoid numerical diffusion. Details of the simulation results are then presented as an optimal policy for sewage discharge in the region.

• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2006년도 춘계학술대회
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• pp.353-359
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• 2006

풍력에너지 연구개발은 1970년대 에너지 위기 이후 시작되어 1980년대 초반까지 가격 경쟁력과 기술 부족으로 상용화에 이르지 못하였다. 그러나 1980년대 중반 미국을 시작으로 상업발전에 성공하여 100kW급 풍력발전시스템이 대량 보급되기 시작하였다. 1990대에는 덴마크, 독일, 스페인 등에서 대규모 풍력시장이 형성되었고, 2000년대 들어 대형화에 성공하여 기존 발전에 대한 시장경쟁력을 확보하게 되었다. 본 논문에서는 풍력에너지 보급 확산을 촉진하기 위해 풍력발전 시장의 동향분석과 함께 기술 특성을 분석하였으며 보급 촉진을 도모할 수 있는 확산 전략들을 제시하였다.

• International conference on construction engineering and project management
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• The 6th International Conference on Construction Engineering and Project Management
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• pp.60-62
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• 2015

The BIM-based architectural design can be the optimal method to improve all sectors of construction industry and reduce environmental impact through digital technologies. The goals and effects of BIM needs in LH to be newly planned based on the experience of public sectors, which will ultimately contribute to maximization of effectiveness. Referring the excellent case in the UK, the current BIM standards according to maturity level 2 handle the contents related to modeling, collaborative data production, data management and assure BIM data have to be used from building construction to operation and maintenance of buildings. Therefore the strategy for the utilization of BIM for construction projects in LH consisted of three steps; first, the minimization of defects via BIM: second, strengthening the competitiveness of construction and asset management: third, upgrading the system of building production and maintenance control. After this trial, LH can accumulate know-how for building construction to be more costeffective and competitive.

• Proceedings of the Korean Society for Quality Management Conference
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• 한국품질경영학회 2006년도 추계 학술대회
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• pp.275-282
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• 2006

급변하는 무한경쟁의 기업 상황에서 앞으로 기업의 생존을 결정할 새로운 시장과 신제품의 방향은 매우 중요한 전략결정이다. 블루오션 전략에서는 기업의 생존을 위해서 기존의 경쟁 시장에서 벗어나 개척되지 않은 새로운 시장으로의 진입을 강조하였다. 이러한 새로운 시장의 진입을 결정하는 방법으로 전략캠퍼스를 제시하였다. 그러나 전략캠퍼스는 기업에서 블루오션을 찾는 방법에서 한계를 갖고 있었다. 본 연구에서는 블루오션 전략의 전략캠퍼스를 대신하여 새로운 시장 또는 제품의 선정방법으로 Timko의 고객만족계수를 사용하였고 레드오션의 유지 전략을 잠재적 고객만족 개선 지수(PCSI Index)를 적용함으로써 고객의 소리를 통하여 블루오션의 접근하는 방법을 제시하였다.

• Bulletin of the Korean Space Science Society
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• 한국우주과학회 2006년도 한국우주과학회보 제15권2호
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• pp.58-58
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• 2006

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1995년도 Proceedings of the Korea Automation Control Conference, 10th (KACC); Seoul, Korea; 23-25 Oct. 1995
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• pp.22-25
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• 1995

This paper shows adaptive control using RHPC(Receding Horizon Predictive Control) with equality constraint which applied to Electric Furnace. The control strategy includes monotonic weighting (improving transient response) and pre-filtering (enhancing robustness), which is effective on real process. We can observe the performance of RHPC and confirm the practical aspect of RHPC with unmodelled dynamics through the experiment of Electric Furnace. Finally, this paper verifies the feasibility of RHPC to real process.

• Journal of the Korea Safety Management & Science
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• 제6권4호
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• pp.123-137
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• 2004

It is an important and hot issue how to improve the competitiveness concerned on product, company and industry. It is necessary to develop the strategy of competitiveness for an efficient operation as well as improving the competitiveness in view of product, system, industry, price, quality and so on. This paper aims at proposing a model to choose dominating factors of competitiveness including a method o( resources allocation which can be applied to all products. And we show its empirical application on tile-industry.

• Journal of Technology Innovation
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• 제7권2호
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• pp.71-100
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• 1999

This article is concerned with the importance of organisation management and its characteristics in business performance in SMEs, and tested by four main aspects: managerial strategies, organisational structure, leader behaviour, and R&D activities. These relationships were tested with questionnaire data from a random sample of 87 firms. Results from simple statistics on each issue showed that SMEs have focused on the corporate growth and management goals, the democratic leadership, decentralisation in organisational structure, and the technology development plans. Results from correlation analyses not only found significant relationships between managerial strategy and R&D activities but also showed differences in R&D activities according to structural status or leadership style, respectively.

• Proceedings of the Korean Institute of Landscape Architecture Conference
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• 한국조경학회 2020년도 춘계학술대회 논문집
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• pp.95-95
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• 2020

• Journal of Environmental Health Sciences
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• 제44권2호
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• pp.107-114
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• 2018

Objectives: The objectives of this study are to describe strategy for exposure assessment of humidifier disinfectant (HD) used in the national program to associate the use of HD with lung injury. Methods: Strategy and method employed to evaluate HD use characteristics were developed to associate health effects including HD associated with lung injury (HDLI). We developed HD-specific questionnaire to assess potential HD exposure, which was consistently used in the national program. Trained environmental health scientists visited the residences of registered subjects and investigated HD use characteristics. Results: Major HD exposure related variables were type of HD brand/s used; HD volume added to the humidifier, frequency of HD addition, and time spent in room/s with the humidifier; duration of HD use in the household in average months/year, weeks/month, and days/week; average sleeping hours in a room with an operating humidifier containing a disinfectant; number of HD brands used and type of HD; average distance of the bed from the humidifier in meters. Conclusions: We concluded that estimated airborne HD concentration was significantly associated with the risk of HDLI.