• Proceedings of the KSR Conference
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• 2008.11b
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• pp.10-16
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• 2008

In order to improve stability of rail and ride comfort, railway bridges should be maintained a integrity. However, it is necessary to plan various reinforcements and improvements because of a long term used and external effects. In this paper, the improvement plan which is reflected by investigation for reinforcement and improvement is introduced. The constituents of the structures are defined in order to optimize the improvement plane, and the analysis for relationships between the constituents are performed by several evaluation. Finally, the improvement plan is applied to a structure using impact factors for the external effects in order to obtain the improvements reasonably.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.63 no.4
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• pp.455-460
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• 2014

South Korea's power consumption is increasing every year. For stable electric power supply, more generation facilities are needed. But it is not easy to build nuclear power generation facilities, so provision of renewable energy is thought of as the solution. For the system's stable management, practical use of energy storing system is needed. Currently, pumping up electric power station is considered most useful. In this study, we have calculated the least amount of energy storing device by considering the renewable energy, HVDC, and change in power for the appliance of ESS in Jeju system, according to The 6th Basic Plan for Long-term Electricity Supply and Demand. Also we have calculated the amount of the battery and about the load equalizing effect to use battery as power storing device. Finally, we have calculated the reduction of electricity generation and the reduction of $CO_2$ emission with this study.

• Journal of the Korean housing association
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• v.25 no.6
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• pp.67-74
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• 2014

Dongseong-ro public design was reformed for a short time to be short of connection and riffle effect of another project and to have limitation on long term and integrated development, so that systematic plan from beginning of the project was needed to produce synergy effects. The purpose of the study was to investigate reformation of Dongseong-ro public design and to check on existing development project again and to take actions against future projects in advance and to reexamine and make long term plan from point of view of development of downtown. This study investigated reformation of Dongseong-ro public design of Junggucheong office of Daegu that was done from May 2007 to December 2010. The study consisted of purpose of the project, scope, time, the committee of promotion, questionnaire survey, residents' participation and follow up to suggest reformation based on questionnaire survey. This study had limitation of investigation into internal materials of 'Dongseong-ro public design reformation's master planning service' of Junggucheong office of Daegu. Further studies were needed to investigate empirically.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.56 no.6
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• pp.1017-1022
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• 2007

In this paper, we try to analyze the likelihood of exercising the power of market dominance by certain generators in future power industry of Korea. Firstly, we estimated installed generation capacity and sales volume of electricity in Korea, based on 'The 3rd Long Term Power Plan' which was announced in December 2006. Secondly, we calculated HHI, an index showing the degree of concentration of an industry, and RSI, an index showing how adequate the supply of goods or services of an industry is, using Fast-Forward. Thirdly, assuming a major generator employs the strategy of withholding a part of its available capacity at a peak time, we simulated hypothetical movement of SMP over a certain period of time, which is compared with that obtained without assuming such strategy to generate Lerner Index. an index showing the degree of market power of a monopoly. Regulators, home and abroad, have not given much interest in analyzing the effect of market dominance that is likely to be exercised by certain players in the future. That said, this paper provides insight into developing methodologies of analyzing and mitigating such effect by proposing the above indices to gauge it. In addition, this paper also shows the potential impact of employing capacity withholding strategy on the financial account of a dominant generator.

• Journal of Korean Library and Information Science Society
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• v.44 no.2
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• pp.267-291
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• 2013

Academic research libraries are seeking a long-term preservation plan for journals for cost-effective stewardship. The emergence of shared print archives has given the library community the opportunity to resolve the problem of the lack of library storage and build a collaborative long-term archiving plan for the print journals. The purpose of this study is to examine Western Regional Storage Trust(WEST), the largest print journal archiving program in North America, and identify their strategies for building a distributed, retrospective print repository service for journals. Based on the analysis, this article will discuss the development of new trends of collaborative library management in a digital age.

• Journal of Korean Tunnelling and Underground Space Association
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• v.13 no.6
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• pp.463-499
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• 2011

Control of ground water is one of the most important factors for long-term operation of tunnel because most tunnels are located under the ground water level. In case of a drainage tunnel, there is no pore water pressure on the lining when the drainage system is properly working. After long-term operation, however, residual pore water pressure can be developed on the lining due to the deterioration of the drainage system. In this study, the water pressure distribution under obstruction condition of drainage material and conduit on the tunnel is numerically investigated using the ICFEP program and compared with the current value being applied to the residual water pressure for rational application plan of residual water pressure on the tunnel linings.

• Journal of The Korea Institute of Healthcare Architecture
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• v.16 no.3
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• pp.57-68
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• 2010

The purpose of this study is to investigate the current characteristics of healthcare and welfare policies in Japan focused on the related policies in 2000's. In Japan, with the perspectives of entering the super-aged society by 2005 and the movement of all of the baby boom generation into the elderly generation by 2015, more rapid progress to the aging society is expected. From this situation, Japanese government has developed diverse elderly-oriented strategies such as "structural reform of social security", "nursing care system" and "gold plan 21" in 2000's. However, most of the related researches targeted the period to early 2000's, excluding the papers about the individual policies. Recently in our country, many related policies have been developed such as the enforcement of "long term care insurance system for the elderly" by 5 year period reevaluations and the preparation for 2nd step of "Plan for Ageing Society and Population"(2011~2015). At this moment, the investigation on the related policies of Japan could give appropriate references to us, a late starter of aging society.

• Proceeding of Spring/Autumn Annual Conference of KHA
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• 2005.11a
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• pp.43-49
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• 2005

The purpose of this study was to provide the fundamental data for the gradual apartment management plan. Through the questionnaire survey, residential satisfactions and maintenance consciousness were investigated. As the result of statistic analysis, the residents' needs for improvement according to the life span of apartment communities were found out. And we can also compare the differences about maintenance consciousness to the life span of apartment. The major research findings are as follows. First, the satisfaction averages according to the life span of apartment communities were classified two groups, less than 10 years' and over than 10 years'. By the requirement for improvement according as the life span apartment communities, habitability factors was demanded in less tham 10 years' group and safety factors was required in over than 10 years' group, Second, dwellers have high preference about remodeling to reconstruction. Especially we have to pay attention to the result that positive consciousness of remodeling and long term reparative marked highly in the group which has the short elapsed years. These results represent the possibility gradual step-by-step remodeling. In other words, the object of remodeling is not only odeteriorated apartments but also new apartments to have short elapsed years.

• Journal of the Society of Naval Architects of Korea
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• v.53 no.2
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• pp.101-107
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• 2016

Generally, the shipbuilding industry has finite resources and limited workspace. Due to finite resources, limited workspace and state of block preparation, erection process in shipbuilding industry is frequently delayed than erection process scheduling which is planned at long-term plan stage. In this study, considering variability of block reserve ratio, the degree of delay in real erection process is measured and compared to scheduling which is planned at long-term plan stage in shipbuilding industry including finite capacity and variative lead time. Also, the erection process scheduling which has minimum lead time can be checked through simulation. The results of this study could be improved the accuracy of erection process scheduling by checking the main event compliance ratio by block reserve ratio and calculating the optimum erection pitch for the main event compliance.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.16 no.12
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• pp.3923-3942
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• 2022

Environment, price, regulation, and other factors influence the price of agricultural products, which is a social signal of product supply and demand. The price of many agricultural products fluctuates greatly due to the asymmetry between production and marketing details. Horticultural goods are particularly price sensitive because they cannot be stored for long periods of time. It is very important and helpful to forecast the price of horticultural products which is crucial in designing a cropping plan. The proposed method guides the farmers in agricultural product production and harvesting plans. Farmers can benefit from long-term forecasting since it helps them plan their planting and harvesting schedules. Customers can also profit from daily average price estimates for the short term. This paper study the time series models such as ARIMA, SARIMA, and neural network models such as BPN, LSTM and are used for wheat cost prediction in India. A large scale available data set is collected and tested. The results shows that since ARIMA and SARIMA models are well suited for small-scale, continuous, and periodic data, the BPN and LSTM provide more accurate and faster results for predicting well weekly and monthly trends of price fluctuation.