• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.5
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• pp.671-679
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• 2016

Bridges, which constitute one of the key facilities in a social infrastructure, are easily accessed and used by users, so that keeping their performance above a certain level is essential. According to various cases in the U.S., Japan and Europe with a long construction history, it is expected that the maintenance cost of bridges in Korea will increase continuously in the future, so a rational decision making system based on engineering factors is necessary to optimize the performance of and maintain them by allocating the limited budget efficiently. This study is a preliminary basic study for the purpose of developing a common asset management system for managing all of the bridges and maintaining the level of service provided by them. The scope of this preliminary study is limited to bridges in urban areas. The bridge asset management system for bridges in urban areas, their level of service (LOS) and performance measure (PM) were developed by carrying out a workshop consisting of both experts and stakeholders. The analysis on the weights of the value and performance measure for each performance indicator was carried out by using the multi-attribute utility theory and the AHP method. In order to confirm the application of the weight of the performance measure and value of the performance indicator, six bridges in an example city were selected, LOS analysis was applied and its results were reviewed.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.5
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• pp.3378-3384
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• 2015

The problem of fast search for raman spectrum has attracted much attention recently. By far the most simple and widely used method is to calculate and compare the Euclidean distance between the given spectrum and the spectra in a database. But it is non-trivial problem because of the inherent high dimensionality of the data. One of the most serious problems is the high computational complexity of searching for the closet codeword. To overcome this problem, The fast codeword search algorithm based on the mean pyramids of codewords is currently used in image coding applications. In this paper, we present three new methods for the fast algorithm to search for the closet codeword. the proposed algorithm uses two significant features of a vector, mean values and variance, to reject many unlikely codewords and save a great deal of computation time. The Experiment results show about 42.8-55.2% performance improvement for the 1DMPS+PDS. The results obtained confirm the effectiveness of the proposed algorithm.

• Journal of KIISE:Computing Practices and Letters
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• v.8 no.5
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• pp.583-589
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• 2002

The Internet is absolutely contributed to information telecommunication revolution nowadays. Realizing local network at the various type of buildings such as a company and a university, ethernet is used for subnet and FDDI, ATM are used for backbone mainly in order to get internet services. Processing TCP/IP protocol suite and analyzing the protocol exactly is essential to detecting the problem occurring in the network and developing communication equipment. This paper presents implementation of ethernet LAN protocol analyser which monitors and simulates ICP/IP protocol suite carrying the Internet and non-Internet protocol such as Netware and NetBIOS. MS window98 and visual C are used for development environment and application program operates on the NDIS firmware. The performance analysis on the proposed system is carried out as monitoring and simulating the traffic over LAN of a university. In the result of monitoring the system, the processing time of a packet captured over the LAN is about 1.5ms. In case of simulating the system, the processing time to be taken carrying out TCP connection and disconnection once is packet is about 8.6ms. The performance analysis of monitoring and simulation results satisfies with 10 Mbps ethernet LAN environment.

• Journal of Korea Water Resources Association
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• v.40 no.2 s.175
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• pp.135-146
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• 2007

FLDWAV model was modified such that it can adequately simulate the effect of Jamsil and Singok submerged weirs in the main reach of the Han River. The enhanced model combines weir-type discharge equations for overflow at fixed weir and Manning equation for fluvial-type flow at the movable weir. Equations for weir overflow include those for submerged weir flow and free overflow. Gates of the movable weir may be open or closed for the simulation. In order to test the simulation capabilities, the enhanced model was applied for various flow conditions at submerged weirs. Backwater effect due to Jamsil and Singok submerged weirs were well simulated. Simulations were carried out for spring and neap tides extracted from artificial tide generated by combining $M_2\;and\;S_2$ tidal constituents. Simulation results cleared indicated that tidal effect extends further upstream as the flood discharge decreases. Low flow simulation capabilities of the enhanced model was tested. Discontinuities of water surface elevation due to the submerged weirs were successively simulated.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.10
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• pp.527-536
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• 2016

The purpose of this study was to explore the components of the geriatric robot pet, which might be helpful in caring for elderly people in the future. Focus group interview-with two focus groups-was performed between August 2014 and December 2014. Study participants were 13 geriatric experts from nursing, medicine, social work, and physical/occupational therapy. All interview data were transcribed, followed by debriefing and a qualitative content analysis. Three main themes emerged: acknowledgment of the usefulness of geriatric robot pet, establishment of elderly-centered appearance, and the functions of the robot pet to meet the needs of elders and family members. The robot pet was considered to be useful to elders who live alone since they can benefit from companionship and care provided by the robot pet. Geriatric robot pet needs to be manageable in size and weight, like a small dog. Moreover, a function that allows for interaction with and monitoring the elderly would be beneficial. The baseline elements that could guide further development of contents for the Korean geriatric robot pet were proposed from the results of FGI. Studies that validate these elements are necessary.

• Journal of Information Management
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• v.43 no.2
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• pp.67-83
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• 2012

Patents are the sources reflecting technology development by research and development(R&D) as well as the tools to secure economic benefits in the market, so using patent information is crucial for decision making processes in formulating technology development strategies. Intellectual property(IP) portfolios including a set of patents related to products and individual technologies are the basic unit that has the economic meaning in making national policies and technology strategies. Therefore, this research develops a total of 69 measures to identify the collective characteristics for IP portfolios("characteristics index"), by incorporating the patent indexes that have been widely used and the patent indexes that developed recently, and applying the concepts to patent analysis that have been used in interdisciplinary studies including economics and library and information science. The results of this research produced a characteristics index manual which helps experts to identify characteristics of technological innovation systems from various dimensions. We expect that the characteristics indexes can be used as a supportive tool for comparative analysis among IP portfolios in the technology policy making process.

• Korean Journal of Comparative Education
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• v.27 no.1
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• pp.171-197
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• 2017

China's independent college approved private education investment, and facilitates the use of funds to support individual investors, corporations, and society. In contrast to China's public universities, the college guarantee private school method of operation. Its bachelor's degree, admission to students, the establishment of a separate corporation, and the recognition of scholastic achievements, was established with the aim of ensuring the diversity of higher education institutions in China. However, since the early 1990s, the independent college, which has emerged as a new way of higher education in China, has achieved quantitative growth over the past 30 years, but the quality of education has not yet grown. The reason why the independent college in China is interested is that it receives support from the facilities and professors of the original public college, and the major in which it is established and shares the reputation of the university. This study tried to analyze the policy of independent college which is a unique higher education institution in China. For this purpose, we use Four-Dimensional Framework to analyze the problem of China's independent colleges. It examines the profitability and non-profitability of independent college as a normative dimension and analyzes the Chinese society that have the old "guanxi" culture core in China. On the structural dimension, we analyzed the structure of the relationship in educational administrative institution. On the constituentive dimension, we observed that the various stakeholders who are interested in the independent college policy. Finally, we searched for future directions of the independent college centered on the process of legalization of independent colleges in technical dimension. The results of this analysis suggest the implications of the direction of China's independent college policy.

• Proceedings of the Korea Water Resources Association Conference
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• 2018.05a
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• pp.83-83
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• 2018

"하천법" 제50조는 하천수의 사용용도를 생활 공업 농업 환경개선 발전, 그리고 주운 등 하천수 사용용도를 다양화하고 있으나, 하천수 사용료의 징수대상은 발전용수, 농업용수, 생공용수, 그 밖의 용수 등 4개 용수를 대상으로 하고 있다. 발전용수는 $100m^3/d$ 에 대하여 연액 231원, 농업용수는 $1,000m^3/d$에 대하여 연액 231원(발전용수의 1/10), 생활 및 공업, 기타용수는 댐용수대를 적용(2018년 현재 52.7원/$m^3$)하고 있다. 댐용수 요금의 산정은 '댐용수를 공급하는데 소요되는 총괄 원가를 보상하는 수준'에서 결정되며, 총괄원가는 '댐용수를 공급하는데 소요되는 적정원가에 댐용수사업에 공여하고 있는 자산에 대한 적정투자보수를 가산한 금액'으로 한다. 우리나라의 생활용수 및 공업용수는 이처럼 "한국수자원공사법" 제16조제2항에 따라 국토부장관이 승인한 댐용수 단가를 적용한다. 댐용수의 산정기준은 댐용수를 공급하는데 소요되는 총괄원가이지만, 하천수로서의 생활용수 및 공업용수가 이러한 댐용수 단가를 적용하는 이유에 대해서는 이론의 여지가 있을 수 있다. 댐용수는 1987년 최초로 전국 동일요금이 적용되었고 그 이후로도 주기적으로 요금이 인상되었으며, 발전 및 농업용수는 2008년 "하천법 시행령" 개정에 의해 사용료가 결정되었다. 농업용수와 발전용수는 각 지자체의 조례에 의해 요금을 부과하였는데 최초의 단가는 농업용수가 톤당 0.00032원, 발전용수는 톤당 0.0032원, 그리고 공업용수는 톤당 0.0076원이 부과되었다. 이후 1981년 조례의 개정에 따라 공업용수는 관경에 따라 차등적인 요금체계가 확립되었는데 대략 톤당 0.01원으로 기존에 단가에 비해 비약적으로 증가하였다. 농업용수 및 발전용수의 단가가 1984년 대비 2배 상승한 것에 비해 공업용수단가는 약 7,000배가 상승하였다. 생활용수의 경우, 기존 조례에서 따로 정하지 않았고 2008년 하천법 개정과 더불어 각 조례에 규정되었다. 즉 2008년 이전까지는 생활용수에 대해 따로 요금기준이 없었던 것으로 파악된다. 이에 비하여 농업용수 및 발전용수는 1984년 2배로 상승한 뒤 현재까지 동일한 요금을 부과하고 있다. 2008년에 개정된 "하천법 시행령" 제57조(하천수 사용료의 징수)의 농업용수 및 발전용수의 단가는 기존 조례의 단가를 그대로 "하천법"이 계승한 것으로 해당 용수의 단가가 특정한 과학적 기준으로 정해진 것으로 보기는 어렵다. 따라서 현재와 같이 용수단가별로 나타나는 커다란 차이는 각 용수의 용도 및 성격, 사회적 영향 등 용수 속성에 관한 사항과 더불어 회귀율과 취배수거리 등 다양한 요인을 적용한 산정기준을 적용하는 것이 바람직할 것이다.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.39 no.5
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• pp.595-603
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• 2019

To alleviate the demand on private car that is constantly increasing, Busan Metropolitan City (BMC) has established Bus Rapid Transit (BRT) to revitalize public transportation. But there are no unified lane system between BRT and general bus stations, which makes off-lane turning general bus to contribute to congestion. And as the bottleneck phenomenon at entrance/exit accelerates the congestion, there has been huge dissatisfaction among commuting drivers. Therefore, this study identifies efficient methods to operate better through measuring civilian awareness. We evaluate both satisfaction and drawbacks on BRT service with Importance-Performance Analysis (IPA). We first distinguish the groups by the awareness on BRT and their main transit usage, and then clarify the difference between the groups. And as a result, the group who is positive to BRT and uses buses often demands improvement in bus indoor comfort and curbing jaywalking. On the other hand, group who is negative to BRT and uses private cars often demands improvement in lane changing and the moving speed of private cars. We next examines the groups with MDPREF, one method of Multidimensional Scaling (MDS). And we have clarified that the evaluating criteria and the individual attributes of the groups corresponds very well.

• Food Science and Preservation
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• v.11 no.1
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• pp.122-125
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• 2004

Factor analysis is estimated using housewives's intention data in Seoul province. Rice consumers considered safety, high nutritive value, shape and cultivation region as important factors in buying rice. The factors of food safety are brand and quality certification mark. The differences of two housewife groups on safety factor are caused by residence type, employment existence and residence region. The marketing strategies for rice containing food safety target housewives living in apartment, Gang Nam region. Also selling extension for target consumers housewives should be employed.