• 한국디지털정책학회:학술대회논문집
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• 2004.11a
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• pp.389-404
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• 2004

Web services are deemed as the natural choice for deploy- ing e-government applications. Their use enables e-government to fully get advantage of the envisioned Semantic Web. In this paper, we pro- pose WebDG, a comprehensive Web Service Management System for e-government applications. It aims to improve government-citizen inter- actions through an infrastructure built around the "life experience" of citizens. WebDG provides a framework for automatically composing e- government services, optimized querying services, and preserving privacy.

• International conference on construction engineering and project management
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• 2009.05a
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• pp.302-309
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• 2009

The effectiveness of Building Information Modeling (BIM) tools and processes has been recognized by the industry and owners are beginning to adopt Triple Bottom Line accounting practices, to enhance economic performance and environmental and social performance. However, the widespread and practical application of Green BIM remains largely unrealized. The authors identify that lack of understanding of the applicability of sustainability metrics to BIM design process is a significant barrier to this adoption. Through literature review this paper outlines the various sustainability metrics available to construction and elaborates on the potential of BIM for sustainable design. The paper maps and correlates applicable concepts of sustainability evaluation systems to BIM and describes the constraints in current BIM tools.

• KIPE Magazine
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• v.22 no.2
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• pp.38-45
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• 2017

• Advances in aircraft and spacecraft science
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• v.2 no.1
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• pp.17-44
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• 2015

A modular multidisciplinary analysis and optimization framework has been built with the goal of performing conceptual design of an advanced efficient supersonic air vehicle. This paper addresses the specific challenge of designing this type of aircraft for a long range, supersonic cruise mission with a payload release. The framework includes all the disciplines expected for multidisciplinary supersonic aircraft design, although it also includes disciplines specifically required by an advanced aircraft that is tailless and has embedded engines. Several disciplines have been developed at multifidelity levels. The framework can be readily adapted to the conceptual design of other supersonic aircraft. Favorable results obtained from running the analysis framework for a B-58 supersonic bomber test case are presented as a validation of the methods employed.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2007.11a
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• pp.504-505
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• 2007

In 2004, a department of engineering education was established at Virginia Tech and Purdue university in the United States. Innovation of engineering education for improving the quality of engineering college education has been progressing. Content of subject of engineering exploration was developed newly for engineering college freshmen. And, effect of a sustainable energy design project on academic achievement for engineering freshmen at Virginia Tech in 2006 was researched. The project was performed throughout a 6 weeks period with one by 50 minutes lecture by professor and one 90 minutes workshop by TAs (Teaching Assistants) every week. To analyze the data, statistical package SPSS (ver. 15.0) was used. In responses to an open-ended question about freshmen students' perceptions of their improvement in design skills, the 3 most identified skills were teamwork, design process, knowledge. In, Korea, an innovation relating to engineering curriculum, facility, instructional strategy and so on will be required.

• Proceeding of Spring/Autumn Annual Conference of KHA
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• 1998.08a
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• pp.67-69
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• 1998

• Journal of the Ergonomics Society of Korea
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• v.24 no.4
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• pp.63-71
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• 2005

A laboratory study was performed to evaluate the effects of an aid(i.e. stick) on joint loadings. Six healthy young participants were recruited from Virginia Tech student population. Each participant has performed three normal walking and three stick walking trials. Normalized and integrated, ground reaction forces(GRFs) and joint moments were measured at ankle, knee, and hip joints from kinematic and kinetic data. The result suggests that stick walking significantly reduces vertical ground reaction force and joint moments at ankle and knee compared to normal walking.

• Proceedings of the KIPE Conference
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• 1998.10a
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• pp.56-61
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• 1998

A soft-switching three-level chopper-inverter system was built for high-power applications like Power Conditioning System (PCS) for Superconductive Magnetic Energy Storage (SMES). The system can handle 1800-VDC, 200-A peak, and 250-kW output power. The system was designed to operate with 20-KHz PWM operation with the aid of state-of-the-art zero-current transition type soft-switching. The system is based on the Power Electronics Building Block (PEBB) concept.

• Proceeding of Spring/Autumn Annual Conference of KHA
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• 1998.08a
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• pp.14-16
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• 1998

• Biomolecules & Therapeutics
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• v.18 no.2
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• pp.135-144
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• 2010

The pro-oxidative and pro-inflammatory pathways in vascular endothelium have been implicated in the initiation and progression of atherosclerosis. In fact, inflammatory responses in vascular endothelium are primarily regulated through oxidative stress-mediated signaling pathways leading to overexpression of pro-inflammatory mediators. Enhanced expression of cytokines, chemokines and adhesion molecules in endothelial cells and their close interactions facilitate recruiting and adhering blood leukocytes to vessel wall, and subsequently stimulate transendothelial migration, which are thought to be critical early pathologic events in atherogenesis. Although interleukin-4 (IL-4) was traditionally considered as an anti-inflammatory cytokine, recent in vitro and in vivo studies have provided robust evidence that IL-4 exerts pro-inflammatory effects on vascular endothelium and may play a critical role in the development of atherosclerosis. The cellular and molecular mechanisms responsible for IL-4-induced atherosclerosis, however, remain largely unknown. The present review focuses on the distinct sources of IL-4-mediated reactive oxygen species (ROS) generation as well as the pivotal role of ROS in IL-4-induced vascular inflammation. These studies will provide novel insights into a clear delineation of the oxidative mechanisms of IL-4-mediated stimulation of vascular inflammation and subsequent development of atherosclerosis. It will also contribute to novel therapeutic approaches for atherosclerosis specifically targeted against pro-oxidative and pro-inflammatory pathways in vascular endothelium.