• Journal of Korean Society on Water Environment
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• v.23 no.6
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• pp.897-905
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• 2007

Approximately 70% of Korea is composed of forest areas. Especially 48% of agricultural field is practiced at highland areas over 400 m in elevation in Kangwon province. Over 90% of highland agricultural farming is located at Kangwon province. Runoff characteristics at the mountainous area such as Kangwon province are largely affected by steep slopes, thus runoff estimation considering field slopes needs to be utilized for accurate estimation of direct runoff. Although many methods for runoff estimation are available, the Soil Conservation Service (SCS), now Natural Resource Conservation Service (NRCS), Curve Number (CN)-based method is used in this study. The CN values were obtained from many plot-years dataset obtained from mid-west areas of the United States, where most of the areas have less than 5% in slopes. Thus, the CN method is not suitable for accurate runoff estimation where significant areas are over 5% in slopes. Therefore, the CN values were adjusted based on the average slopes (25.8% at Doam-dam watershed) depending on the 5-day Antecedent Moisture Condition (AMC). In this study, the CN-based Long-Term Hydrologic Impact Assessment (L-THIA) direct runoff estimation model used and the Web-based Hydrograph Analysis Tool (WHAT) was used for direct runoff separation from the stream flow data. The $R^2$ value was 0.65 and the Nash-Sutcliffe coefficient value was 0.60 when no slope adjustment was made in CN method. However, the $R^2$ value was 0.69 and the Nash-Sutcliffe value was 0.69 with slope adjustment. As shown in this study, it is strongly recommended the slope adjustment in the CN direct runoff estimation should be made for accurate direct runoff prediction using the CN-based L-THIA model when applied to steep mountainous areas.

• The International Journal of Costume Culture
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• v.7 no.2
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• pp.123-134
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• 2004

This study tried to suggest the effective future marketing strategies by analysing marketing strategies of five brands which were selected by sales amount and the growth rate among young casual brands in the L-Department store from 2001 to 2002. According to analysis, brand marketing could summarize to five marketing strategies such as culture marketing, emotion marketing, co-marketing, on-line marketing, and propose marketing. Culture marketing includes 'BB family marketing, star marketing, core marketing, experience marketing. One of the emotion marketing is 'Kidult marketing' which affects cute concept. Co-marketing includes 'Charisma marketing' that cooperates with distribute industry, 'Movata marketing' which cooperates with mobile communication industry, and 'Game marketing' which cooperates with game industry. There are some other marketing strategies such as consumer calling marketing, A.S.A. marketing which is for buyers, QR marketing for quick response, Web site's differentiate marketing and Logo marketing. The suggested marketing strategies for on-coming brands are 'distinguished strategy of the online contents', 'consumer calling strategy' and 'loyalty maximizing strategy'.

• Proceedings of the Korea Information Processing Society Conference
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• 2006.05a
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• pp.1419-1422
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• 2006

최근 인터넷은 유선 인터넷 기반에서 시간과 장소에 제약이 없고, 휴대가 용이한 무선 인터넷 기반으로 활성화되고 있다. 그러나 무선 인터넷은 느린 전송속도에 제약이 있으므로 대량의 트래픽을 발생시키는 파일 업로드 등의 기능은 무리가 있다. 따라서 본 논문은 유선과 무선 상의 장 단점을 보완한 유 무선 통합 시스템을 설계하고 구현한다. 제안한 시스템은 실시간에 업무상황을 즉각적으로 반영할 수 있어, 조직 내의 의사소통을 원활히 하고, 업무의 효율성을 증대시키고 사업의 수준을 향상시킬 것으로 기대된다.

• Proceedings of the Korea Information Processing Society Conference
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• 2006.05a
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• pp.1415-1418
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• 2006

최근 정보 관련 산업 발달과 더불어 공간 정보의 중요성이 점점 강조되어, 국가 차원의 지리정보체계가 구현되고 있다. 국토지리정보원이 구축하고 있는 수치지도는 DXF로 제작되는데, 이 DXF맵은 GIS분야에서 필요한 속성정보나 위상정보를 갖지 못하여 지리정보 통합에 어려움이 있다. 지리정보의 여러 분야에 걸쳐 효율적인 데이터의 공유가 가능하도록 DXF파일에서 공간 개체를 추출하는 연구는 매우 중요하다. 본 논문에서는 DXF 파일에서 다양한 공간 개체를 추출하는 효율적인 공간 개체 추출기를 제안한다. 공간 개체 추출기는 DXF파일을 구성하는 요소들 중에 POLYLINE, POINT, CIRCLE, TEXT, ARC, LINE의 수치값을 비교하여 그에 해당하는 좌표값을 DAT 파일에 저장한다. 제안된 시스템은 웹상에서도 사용할 수 있다. 사용자는 단순히 웹서버에 DXF 파일을 업로드해서 공간 개체 추출기를 실행하여 결과를 다운로드 받아 활용할 수 있다.

• Proceedings of the Korea Concrete Institute Conference
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• 2001.11a
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• pp.65-70
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• 2001

The compression toe of structural wall is designed to resist the axial compression and shear force caused by wind or earthquake. The performance of shear wall used in tall building is highly influenced by combined shear and axial force. For this reason, it is possible to result in local brittle failure because of concentrated damage in the potential plastic hinge region under severe earthquake. Thus, it is necessary to establish the lateral confinement details at the plastic hinge of shear wall so that shear wall can behave a ductile manner, The objective of this study is to evaluate the seismic performance of L-shaped walls with different confinement details. For this purpose, three wall specimens were tested experimentally and also analyzed using Nonlinear FEM package.

• Proceedings of the Korean Information Science Society Conference
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• 2008.06b
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• pp.105-109
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• 2008

자동차, 항공기, 철도차량, 선박 등의 제품개발에 필요한 일련의 엔지니어링 활동들을 유기적으로 연결하고 통합하기 위해서는 엔지니어링 협업(비지니스 프로세스)을 처리하기 위한 시스템이 요구된다. 엔지니어링 프로세스 협업을 구성하는 엔지니어링 서비스는 일반적인 웹 서비스와 비교할 때 상대적으로 긴 응답시간과 높은 실행비용 등에서 차별화 된다. 본 논문에서는 서비스 조합에 수치해석 특성, 서비스 크기 등의 엔지니어링 서비서의 특성들을 반영시켜 제한된 시간과 비용을 만족하는 엔지니어링 프로세스 협업을 처리할 수 있는 웹 서비스 조합 시스템을 제안하였다. 또한 서비스 조합 모델링 단계에서 QoS 기반 서비스 선택 액티비티와 서비스 조합 실행 단계에서 서비스 선택 알고리즘을 제시하였다.

• Proceedings of the Korean Society for Technology of Plasticity Conference
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• 1996.10a
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• pp.105-112
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• 1996

Aluminium alloy have been used extensively as forging materials for aircraft components due to their high specific strength and corrosion resistance. A large portions of these materials are used as airframe components consisted of various combination of such Rib-Web structure. But the problem of high forging pressure and defect which were caused by narrow Rib thickness prevented from the favorable developments and laboratory scaled trials. In this study, optimization of forging variables such as corner radius and temperature in Rib-Wed structure were established. The 2 mm of corner radius minimized the forging pressure to get the fixed Rib height, which well coincided with theoretical result according to Upper-Bound analysis. And optimum workpiece temperature was below 450$^{\circ}C$ in consideration of grain growth and forging defects by local melting.

• Proceedings of the Korea Information Processing Society Conference
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• 2010.04a
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• pp.1017-1019
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• 2010

정보화 기술이 활발하게 진행되어 가운데 지리공간정보의 기술이 부각되고 있다. 유비쿼터스 시대로 접어 들면서 세상이 모든 것들이 위치를 가지게 된다. u-city, LBS, ITS 서비스 등 지리공간 데이터의 활용은 앞으로 무궁무진하게 커질 것이다. 이로 공간정보 유통시스템도 향후의 WEB 3.0기술을 고려하는 것이 필요하게 되었으며, 사용자 중심의 서비스 시대로 접어 들면서 공간정보의 민간 유통시스템 구축이 요구되고 있다. 본 논문에서는 공간정보의 민간 유통을 위한 메타데이터 표준 및 적합성 테스트 방안을 제시하였다.

• Parasites, Hosts and Diseases
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• v.54 no.2
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• pp.147-154
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• 2016

Toxoplasma gondii infection induces alteration of the host cell cycle and cell proliferation. These changes are not only seen in directly invaded host cells but also in neighboring cells. We tried to identify whether this alteration can be mediated by exosomes secreted by T. gondii-infected host cells. L6 cells, a rat myoblast cell line, and RH strain of T. gondii were selected for this study. L6 cells were infected with or without T. gondii to isolate exosomes. The cellular growth patterns were identified by cell counting with trypan blue under confocal microscopy, and cell cycle changes were investigated by flow cytometry. L6 cells infected with T. gondii showed decreased proliferation compared to uninfected L6 cells and revealed a tendency to stay at S or G2/M cell phase. The treatment of exosomes isolated from T. gondii-infected cells showed attenuation of cell proliferation and slight enhancement of S phase in L6 cells. The cell cycle alteration was not as obvious as reduction of the cell proliferation by the exosome treatment. These changes were transient and disappeared at 48 hr after the exosome treatment. Microarray analysis and web-based tools indicated that various exosomal miRNAs were crucial for the regulation of target genes related to cell proliferation. Collectively, our study demonstrated that the exosomes originating from T. gondii could change the host cell proliferation and alter the host cell cycle.

• Journal of Home Health Care Nursing
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• v.26 no.3
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• pp.341-348
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• 2019

Purpose: Severe burn injuries require long periods of hospitalization and treatment, which results in various physical and psychological issues. The main purpose of this study was to identify burn characteristics and psychological problems that influence Health Related Quality of Life (HRQoL) after discharge. Methods: A cross-sectional descriptive study using mobile/web or paper-based survey methods was conducted from a major burn center. A total of 145 patients completed the scar assessment, quality of life, sleep disorders, and depression scales. Results: The overall mean HRQoL and scar status scores were 2.28 out of 5 and 34.45 out of 60 points, respectively. Participants with higher burn degree, joint involvement, and emotional distress reported significantly lower HRQoL and scar status. Participants with depression and sleep problems also had lower HRQoL. Significant predictors of HRQoL included burn range, scar status, depression, and sleep issues. Conclusion: The results show that patients with severe burn injury experience high levels of physical and psychological problems. Patients with severe burn injury and psychological problems such as depression and sleep are likely to experience a reduced HRQoL. Psychological management and intervention in home care setting may improve HRQoL of burn patients.