• The Journal of Korean Institute for Practical Engineering Education
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• v.1 no.1
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• pp.25-29
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• 2009

Assessment of program achievement is an essential item to analyze and improve the engineering education program. Program achievements are the abilities to be obtained after finishing the 4 year engineering program, and the program achievements should be evaluated for the quality improvement of program. There are two important considerations to determine the assessment method. the first one is reliability and the second one is the feasibility. In this paper, we propose a assessment tools and introduce the assessment methods of program outcomes. The proposed method is designed to enhance the reliability and feasibility of assessment in engineering education.

• KEPCO Journal on Electric Power and Energy
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• v.2 no.3
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• pp.403-407
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• 2016

In general, drum-type boilers are designed for base load duty and applied under constant pressure operation mode. Recently, however conditions often occur that even drum-type boilers have to operate at partial load conditions. A feasibility study on adopting the sliding pressure operation for drum-type boiler was conducted, and corresponding performance changes and effects on the equipment were analyzed by utilizing a process simulation model. As a result, the conclusion was reached that drum type boilers are able to adopt the sliding pressure operation and can improve of net efficiency at part load operation in spite of the Rankine cycle efficiency reduction due to the decreases in main steam pressure. Because of thank to improvement of high pressure turbine stage-1 internal efficiency and power savings of boiler feed water pump. The sliding pressure operation is advantageous in terms of stress level relief for boiler tube as well as maintaining the rating steam temperature at part load condition. However, cautions are required because the drum boilers have poor dynamic response characteristics which may get worse during the sliding pressure operation.

• Archives of Pharmacal Research
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• v.29 no.9
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• pp.800-807
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• 2006

This study examined the possibility of using a tissue cultured root of wild Panax ginseng (tcwPG) as a fertility agent. The effect of tcwPG on spermatogenesis was studied using male rats. The tcwPG crude powder was administered orally to 7-week-old rats over a 6-week period. The number of sperm in the testes and epididymides was significantly higher than the control. A histological examination did not reveal any morphological changes in the testes from the tcwPG powder treated rats. Moreover, there were no significant differences in the weights of the heart, spleen, liver, kidney, brain, testes and epididymides. Oligospermia was also induced by administering 2,3,7,8-tetrachlorodaibenzo-p-dioxin (TCDD) to the rats in order to estimate the feasibility of using tcwPG as treatment for infertility caused by spermatogenic disorders. After exposing the rats to TCDD, the tcwPG saponin fraction treated rats showed some improvement in the body weight, sperm number and testis morphology. It was estimated that tcwPG had feasibility as a therapeutic agent on spermatogenic disorder.

• Proceedings of the Korea Water Resources Association Conference
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• 2008.05a
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• pp.1545-1549
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• 2008

최근 이상홍수나 가뭄과 같은 물 관련 재해의 발생빈도가 높아지고, 산업 고도화, 인구증가와 같은 원인에 의해 장 단기적 물 부족 현상이 우려되면서 수자원 사업에 대한 관심이 고조되고 있다. 대부분의 수자원 사업은 공공성이 매우 크기 때문에 대규모 정부예산의 투입을 필요로 하고 있으나, 수자원사업의 특성상 사업의 공공성에 반하여 사업 시행에 따른 여러 경제적, 정책적 이해관계가 난립하여 사업 시행에 어려움이 따르고 있는 것이 실정이다. 이에 따라 '수자원(댐)부문사업의 예비타당성조사 표준지침 연구-제3판'에서는 수자원 사업의 타당성 평가를 위해 크게 경제성분석과 정책적분석의 두 부문으로 접근하고 있으며, 최종적으로 다기준의사결정기법 중 하나인 AHP기법을 이용하여 결정함으로써 수자원 사업의 가치 평가에 대한 이해를 돕고 있다. 본 연구에서는 지난 1999년부터 2006년까지 수행된 수자원분야 및 타분야의 사례를 바탕으로 수자원사업 예비타당성조사의 실태를 파악함으로써 현재 지적되고 있는 문제점을 고찰하고 그에 따른 해결방향을 제시하고자 하였다.

• Proceedings of the KIEE Conference
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• 2000.11a
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• pp.180-183
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• 2000

The Battery Energy Storage System(BESS) has lots of advantages such as load levelling, quick response emergency power(spinning reserve), frequency and voltage control, improvement of reliability, and deferred generation and transmission construction. The economic feasibility requires justification from the customer side of meter to promoting the dissemination of BESS nationally. In this paper, we proposed the economic assessment model of customer owned Battery Energy Storage System(BESS) which is complemented and improved the existing model. The proposed model is applied to the typical customer type(light-industrial commercial, and residential) which are taken from the statistical analysis on the load profile survey of Korea Electric Power COmpany (KEPCO). The economic assessment performed for each customer type to justifying their economic feasibility of BESS installation from the economic measures such as payback period, overall benefits, ROI, and ROR. The results of this paper are useful to the customer investment decision making and the national energy policy & strategy.

• Journal of Advanced Marine Engineering and Technology
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• v.41 no.2
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• pp.171-175
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• 2017

The high-tech large warships are minimal and they are always monitored by opponents, and become primary targets when conflicts occur. The improvement in reducing susceptibility has significant importance because it is difficult for a ship to maintain mission capability and functionality once it is damaged. Ordinary decoys are effective only under the premise that the ship has already been exposed. Traditionally, for naval vessels, techniques related to the radar have been used in military stealth techniques to ensure confidentiality. The corner reflector, on the other hand, can produce rather large radar cross sections. Continued use of deceptive systems such as chaff during operations will help to improve survivability of naval ships. From this viewpoint, corner reflector was considered for making radar countermeasures and deception technology. This paper reviews the current status of corner reflector basis decoys and the technical feasibility of corner reflectors for developing structural decoys.

• Nuclear Engineering and Technology
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• v.52 no.2
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• pp.429-447
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• 2020

The considered simulation tasks are based on an electrometallurgical process development strategy and associated telemanipulator simulation systems are proposed with various scales of experimental facilities. Fundamentally, target facilities are assumed to be operated only by remote handling systems because the considered process is operated in hazardous environments. Futhermore, the feasibility at various scales should be experimentally verified with gradual increase in throughput. In this regard, bench, engineering, and pilot-scale simulation systems are important early-stage tools for assessing the practical operability of the target process with the material handling systems. Such simulation systems are highly customized for applications and are a precursor to larger pilot and demonstration-scale plants. This paper introduced and classified the developed simulator systems for this approach at various scales using remote handling systems which were assembled inside a virtual target facility, and the manmachine interface was included for a more realistic operation of the simulator. The results obtained for each simulator show the feasibility and requirement for improvement of the systems for the considered test issues with respect to the operation and maintenance of the process.

• Journal of the Korean Society of Physical Medicine
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• v.6 no.2
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• pp.225-233
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• 2011

Purpose: This study evaluated the feasibility of using Nintendo Wii games for improving cognition, balance, function in patients with dementia. Methods: A total 30 dementia patients were randomly assigned into the experimental group(n=15) and control group(n=15). All subjects performed a general therapeutic exercise, and 30-minute sessions of the table tennis and fencing game of Nintendo Wii were conducted with experimental group 3 times a week for 8 weeks. The intervention effects were measured by using MMSE-K, BBS, and FIM. The results were analyzed by using repeated measure ANOVA. Results: The MMSE-K and BBS scores showed significant differences. A significant interaction was observed between the experimental group and the control group in MMSE-K. The final MMSE-K and BBS scores for the experimental group were significantly higher than those for the control group. However, there was no difference in the FIM scores. Conclusion: We suggest that Nintendo Wii games are effective in cognㅇition and balance improvement in dementia patients. Future research on a variety of programs in needed.

• Journal of Internet Computing and Services
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• v.17 no.3
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• pp.129-136
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• 2016

Crucial aspects to successfully realizing the re-emergence of a contemporary and sustainable supercomputing community in South Korea will involve the devoted efforts and support from key government and R&D organizations. We suggest various supplementation plans regarding the roles of support for the statutory plan. This includes the committee and the plans which are often missing necessary support systems that help competent ministries to plan properly according to the missions of the research center. This dissertation suggests that adjustment in the HPC trends will depend upon exposing and correcting problems in the law as well as overall improvement of the law. Also, the total development of a super computing market is necessary. The results of these guidelines will create a spread of demand for supercomputing for national IT resource sharing, and will foster the development of supercomputer specialists worldwide. Other major end results include significant increases in research productivity and increased rates of product development.

• Journal of Climate Change Research
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• v.9 no.4
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• pp.435-443
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• 2018

Climate technology applied to address climate change requires a comprehensive review such as environmental and social acceptability in addition to economic feasibility. Not only mitigation and adaptation technologies, but also integration of climate technologies into a business model with other relevant technologies including ICT, finance, and policy instruments could enhance technical, economic, and environmental performances to respond to climate changes. However, many climate projects (and business models) are currently not designed to consider adequately complex climate?related issues. In addition, there is a lack of research on assessment systems that can comprehensively evaluate business feasibility of such models. In this study, we developed a system consisting of nine major indicators in four fields to assess climate technology-based business models. Each indicator was weighed using the analytic hierarchy process (AHP) for systematic assessment of business models. The process can be utilized as a tool to guide improvement of climate technology business models.