• Proceedings of the KSR Conference
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• 2008.06a
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• pp.1416-1425
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• 2008

Urban railway carries large numbers of passengers during the rush hour. According to the announcement of Ministry of Land Transport and Maritime Affairs(MLTM), 221% of the congestion rate is reported in the SeoulMetro No.2 outer circle line from sadang to bangbea between eight and nine o'clock in the morning. This study analyzes the cause of the client's dissatisfaction about SeoulMetro such as the train delay, and decides the preference rank of the alternatives for congestion alleviation and enhancement of the transport capacity using Analytic Hierarchy Process(AHP).

• Journal of the Korea Society of Computer and Information
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• v.23 no.12
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• pp.107-114
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• 2018

We propose EPD(Electrophoretic Display) file generation system based on template that enable users to choose contents layout for E-paper display. And also we show implementation results that apply the proposed system in digital doorsign management field adopting E-paper display. Template includes information for contents layout which is composed of standard form image to be used as background image, coordinates of area for dynamic data to be inserted, data source about dynamic data, and characteristic data of EPD panel for displaying contents. System administrator registers templates in Forms Server. When user chooses a contents layout, Forms Server automatically generates EPD file for displaying contents in E-paper by using information of the template and sends EPD file into doorsign. Strength of the proposed system lies in reflecting user preference about contents design and adding personal data into E-paper contents by smartphone application.

• Proceedings of the Korean Society of Computer Information Conference
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• 2013.01a
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• pp.127-128
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• 2013

이 연구는 노인의료복지시설 소속 요양보호사들을 대상으로 자기효능감과 직무만족에 대한 요양보호사들의 주관적 인식의 차이를 분석해 보고자 하였다. 분석결과 요양보호사들이 근무하는 노인의료복지시설 유형에 따른 인식의 차이는 없었지만 전체적으로 요양보호사들의 자기효능감과 직무만족의 충족이 노인의료서비스 제공에 있어서 중요하다는 것을 강조하였다. 따라서 노인의료복지시설 소속 요양보호사들이 노인들에게 의료서비스 등을 제공함에 있어서 직무만족과 동시에 지속적으로 높은 수준의 자기효능감을 유지할 수 있도록 하는 인적자원관리전략이 필요함을 시사하였다는데 그 의의가 있다.

• Journal of Hydrogen and New Energy
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• v.14 no.2
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• pp.146-154
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• 2003

The hybrids of zeolite and metal hydride were prepared to improve the absorption properties as media for hydrogen storage. The zeolites which was deposited on the surface by metal hydride vapor showed excellent absorption properties and sodalite was proved to be better than zeolite-A in the reaction velocity and hydrogen storage capacity. This suggests the metal hydride could be used effectively as catalytic active material for enhancing the hydrogen storage in zeolite containing $\alpha$-cages and furthermore the hydrogen molecules have preference tobe occluded in their cavities containing $\alpha$-cages more effectively than that containing a and $\beta$-cages.

• Architectural research
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• v.23 no.4
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• pp.67-73
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• 2021

An efficient demolition process requires the optimum method selection considering stability, economic feasibility, environment, and workability. In reality the construction cost and period are priority concerns, and safe construction methods are neglected. In addition, the choosing demolition method is often determined subjectively by experienced field engineers. This research paper presents a multi-criteria decision-making method using Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) to select the optimum demolition method. Three experienced demolition engineers' opinions were used to develop the TOPSIS model. The case study showed that the preferences of ten attribute measurements for demolition method selection. Authors suggested the most preferable demolition method for the case study project.

• ETRI Journal
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• v.30 no.6
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• pp.757-764
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• 2008

In this paper, we present a design evaluation system with visualization and interaction of mobile devices using virtual-reality-based prototypes which can be used to easily change design parameters and simulate embedded software. To evaluate and predict affective-engineering-based design preferences for mobile devices under a virtual environment, we have developed a high quality visualization platform which creates images that look similar to real mobile devices in addition to real-time simulation of realistic motions and functions of mobile devices. To support a quantitative usability test scenario for external design shape, we also have built a system which consists of a mixed-reality-based testing platform for measuring hand load.

• Proceedings of the Korean Information Science Society Conference
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• 2007.10b
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• pp.253-257
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• 2007

본 논문에서는 홈 네트워크 환경에서 사용자 개개인 선호도에 맞는 홈 네트워크 서비스를 제공하는 ACS(Automatically Control System)를 제안한다. 제안된 시스템은 댁내에 홈 서버와 사용자의 위치를 식별할 수 있는 RFID Tag, 홈 네트워크에 연결된 가전기기들로 구성한다. 홈 서버에는 등록된 사용자 선호도 프로파일과 각 디바이스들로부터 사용자 개개인의 사용현황 등을 데이터베이스로 구축하고, 그 정보를 분석하여 사용자 개개인의 선호도에 따라 댁내 가전기기들을 자동 설정하고 자동 제어하는 서비스를 제공한다.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2018.05a
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• pp.159-160
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• 2018

The domestic construction industry is changing its preference for demand and supply along with urbanization and economic development. Accordingly, initial risk assessments is more important than before. Currently, the research related to risk analysis except for apartment studies is insufficient. Therefore, the objective is to suggest a basic study on financial analysis model development by applying optimization method in residential officetel. To achieve the objective. first, the previous studies are investigated. Second, the causal loop diagram is structured based on the collected data. Third, the financial model is developed by using optimization method. In the future, the proposed model can be helpful whether or not conduct execution of an officetel development project to the decision makers.

• Proceedings of the KSPS conference
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• 2003.05a
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• pp.153-156
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• 2003

In this paper, we studied advanced audio/ voice information processing techniques, and trying to introduce more human friendly audio/voice. It is just in the beginning stage. Firstly, we approached in well-known time-domain methods such as moving average, differentiation, interpolation, and decimation. Moreover, some variation of them and envelope contour modification are utilized. We also suggested the MOS test to evaluate subjective listening factors. In the long term viewpoint, user's preference, mood, and environmental conditions will be considered and according to them, we hope our future technique can adapt speech and audio signals automatically.

• Korea journal of population studies
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• v.34 no.1
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• pp.159-178
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• 2011

Korea has been widely recognized as the most successful country for reversal of the rise in sex ratio at birth (from the mid-1980s to the mid-1990s) in a short period of time. However, unusually high sex ratios at birth are still observed in most regions as parity increases. Given that imbalanced sex ratios at high birth orders are mostly due to son-selective abortion, it still remains questionable whether son-selective reproductive behavior has vanished in Korea. The main purpose of this study is to analyze the pattern of changing trends and socioeconomic differentials in sex ratio at birth. Micro-data from birth registration for 2009 are utilized. Attention is focused on analyzing sex ratios at birth in Youngnam region according to age of mother, parity, educational attainment of parents, and occupation of parents. A series of simulations are also conducted in this paper to show how prenatal sex screening and son-selective abortion have affected the level of sex ratio at birth for years 1994, 2005 and 2009.