• Journal of the Korea Academia-Industrial cooperation Society
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• v.5 no.1
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• pp.26-28
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• 2004

In spite of the presence of various kind of Integrated Circuits it's not always easy to get the right part. Besides, it is hard to find a vendor for a small quantity consumers like who develop prototype applications. In this study, we've tried to get the logical signals from the PC based device we've developed that correspondents with the real ICs. It can emulate decoder ICs, multiplexers, demultiplexers and basic logic gates.

• The KSFM Journal of Fluid Machinery
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• v.2 no.1 s.2
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• pp.108-113
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• 1999

In a scroll compressor it is generally accepted that a check valve is necessary to prevent reverse rotation of the scrolls. The check valve is subjected to discharge pulsations and their resultant forces. The flow phenomena around the check valve may affect the efficiency and the noise level significantly. The motivation of this study is to understand the flow phenomena and the unstable motion of the check valve on operating conditions in order to identify reasons raising noise and improve the performance of the check valve. In this study, unsteady flow simulation was performed using CFD and the pressure distribution around the check valve was obtained. This paper also shows that unstable motion of the check valve on standard operating conditions through theoretical analysis and flow visualization.

• 한국정보교육학회:학술대회논문집
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• 2008.01a
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• pp.245-250
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• 2008

초등학교 정보통신기술 교육에서 새롭게 실시되는 프로그래밍 교육을 위해 로봇 프로그래밍에 대한 관심이 어느 때보다 고조되고 있다. 교육용 로봇을 이용한 프로그래밍교육은 학습자가 로봇을 직접 제작하고 프로그램을 작성하여 실행시키는 과정을 통하여 프로그래밍의 원리뿐만 아니라 학습자의 창의력과 문제해결력 신장에도 많은 도움을 준다. 이러한 로봇 프로그래밍 교육을 활성화시키기 위하여 본 연구에서는 초등학교 아동의 발달 수준에 맞게 게임, 가상체험, 시뮬레이션 기법 등을 적용한 학습 지원시스템을 설계하고자 한다. 이를 통하여 학습자는 고가의 비용을 들이지 않고도 기존의 인터넷 환경에서 접근하여 가상의 로봇을 통하여 재미있고 흥미롭게 프로그래밍기법 및 알고리즘에 대해 쉽게 원리를 배울 수 있는 기회를 제공하고자 한다.

• 한국정보교육학회:학술대회논문집
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• 2007.01a
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• pp.309-316
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• 2007

프로그래밍 학습은 프로그램의 작성, 오류 수정, 실행을 통해 학습자의 문제 해결력과 논리적 사고력을 향상시킨다. 따라서 프로그래밍 언어는 쉽고 익히기 쉬어야 한다. 또한, 초등학생은 Piaget의 인지적 발달 단계로 볼 때 구체적 조작기(concrete operational period: 6, 7$\sim$11, 12세)에 해당하는 시기이다. 이 시기는 구체적인 사물을 가지고 조작함으로써 논리적 사고가 가능하다. 따라서 본 논문에서는 프로그래밍이라는 매우 추상적인 작업을 로봇이라는 구체물을 통해 결과를 확인할 수 있게 하였으며, 프로그래밍 학습의 초기 단계에 있는 초등학생이 쉽게 사용할 수 있도록 한글을 기반으로 프로그래밍 학습을 할 수 있도록 하고, DB를 활용하여 명령어를 사용자가 추가, 삭제, 수정할 수 있는 한글 기반의 로봇 프로그래밍 도구를 설계 및 개발하였다.

• Proceedings of the KIEE Conference
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• 2007.07a
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• pp.814-815
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• 2007

전력부가서비스의 개발에 필수적인 수요자의 응답을 조사 분석하였다. 국내에서는 전력부가서비스의 본격적인 개발이 되지 않고 있는 실정이므로 수요자의 의식에 대한 데이터에 대한 기반 구축이 아직 없는 실정이다. 본 연구는 향후 전력서비스 제공시 경쟁력 제고의 필수 요소가 될 수 있는 부가서비스의 개발을 하기 위한 기반 구축을 위해 수요자 응답의 데이터를 설문을 통하여 수집 및 조사하였다. 그리고 조사 배경 및 방법과 수요자의 응답을 분석한 결과를 기술하였다. 수집된 응답 결과들은 데이터베이스로 구축되었고 향후 개발 예정인 수요응답 시스템의 설계 자료로 활용될 예정이다.

• International Commerce and Information Review
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• v.18 no.3
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• pp.73-100
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• 2016

This study focused on the Korean Stock Market so as to recognize the actual Korea-China FTA effect in the firm level. The result are as follows. First, lifting embargo even before the FTA actually took into effect influenced negatively to the firms listed in Korean Stock Market unlike the expectations that effectuation could influence positively to Korean economy. Secondly, the industries that China has attracted more foreign investors than Korea have shown declining returns as they positioned comparative disadvantages in Korea. In this regard, foreign shares delivered signaling effects to domestic investors in Korea. Thirdly, information for effectuation(embargo lifting) has reflected in the stock prices immediately as it leaked in the industries expecting the negative impact, while investors showed the tenancy to retain the action until the FTA actually took into effect in the industries expecting the positive impact.

• Journal of the Korea Convergence Society
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• v.11 no.8
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• pp.287-296
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• 2020

The purpose of this study is to explore the differences in aesthetic experience according to the level of audience participation. Flow experience and aesthetic distance were utilized as proxies for aesthetic experience. A total of 70 undergraduates participated in the experiments of this study. In terms of flow experience, active participation groups were found to have relatively greater flow experiences compared to contemplation groups and passive participation groups. However, there was no difference in flow experience between the contemplation groups and the passive participation groups. In light of aesthetic distance, which means psychological distance, people in active participation groups were found to have a closer psychological distance from artwork than those in contemplation groups and passive participation groups. Also, those who belonged to the passive participation group showed a closer psychological distance than the contemplation group. The results of this study provide artists and art organizations with implications for enhancing audience attraction as well as the completeness of artwork.

• Archives of design research
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• v.18 no.1 s.59
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• pp.205-214
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• 2005

A development proposal that maximizes the trend of travel souvenir and articles toward tourism and natural resources through utilization of the Limited Production method was the focus of the present research. First, the flaws of travel souvenir and articles, currently produced in Inje, Kangwon-Do, were identified, as were the regional uniqueness of the area. The comparative advantages of developmental conditions of the above-specified region to various other Si/Kun regions were demonstrated to ascertain the optimal production method of travel souvenir and articles. The results are as follows. Superior supply of,7aw materials necessary for production of wood-worked travel souvenir and articles are abundantly available and the dose proximity of 17 existing workshops self-contain the production capacity to sustain the Limited Production method. Furthermore, the regional governing council conveyed positive attitudes towards the prospect of creating a regional production complex of wood-worked travel souvenir and articles. The results demonstrate that the optimal method of maximizing the trend of travel souvenir and articles toward tourism and natural resources is achieved through systematic collaboration of industry, education, and tourism that promote development, production, and merchandising of Inje's regional travel souvenir and articles.

• Journal of Advanced Navigation Technology
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• v.22 no.1
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• pp.1-12
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• 2018

Currently, the domestic UAS technology is lagging behind the leading countries in terms of both advanced technology and industrial competitiveness, but it cannot avoid the global efforts of integrating UAS into existing manned aviation system and applying them to industries. UAS is a relatively new system to existing aviation world, but ICAO is making a great effort to help Contracting States and the aviation industries to better understand and promote UAV systems. In particular, the UAS is classified as RPAS and other UAS, leading to the standardization work for integrating the RPAS into the manned aviation in the near future. For this purpose, ICAO has been promoting the standardization for the global operation of the RPAS, and in this study, it has been carrying out the study on the strategy to establish the domestic RPAS certification system including the ICAO standardization activities. This paper analyzes the domestic and international regulatory frameworks for RPAS and presents a strategy for building the domestic RPAS certification system.

• Journal of the Economic Geographical Society of Korea
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• v.5 no.2
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• pp.249-275
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• 2002

Iksan Export Free Zone which was established for the export promotion, the employment augmentation, the technological improvement and the regional development promotion through the attraction of foreign direct investment is declining function with diminution of foreign direct investment, exportation and employment since the middle of the 1980s. The decline factor of the function was inherent in disregard of the necessary locational factors for Export Free zone's function promotion and without respect to conditions in a choice of location. And the present labor intensive industrial structure of region has some difficulties with a modification of Export Free Zone's industrial structure to a technology intensive industry. According to the lack of coherent policy, a limited plottage and a lack of the extensible space decrease the effect of agglomeration and economic of scale. And the lack of governmental policy to create a dynamic advantage comparative with an amelioration of the locational conditions of region diminish the regional attractive force to foreign direct investment.