• 공학교육연구
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• 제16권4호
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• pp.9-14
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• 2013

This paper investigated the effect of multimedia educational program developed based on Flash for learning how to make a part drawing of V-belt drive. The scholastic achievements of experimental group learned by the program were higher than traditional group in case of technical high school students, but they were not different in case of university students.

• Smart Structures and Systems
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• 제16권1호
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• pp.101-139
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• 2015

In this paper, it is aimed to investigate the restoration effect on the structural behavior of masonry arch bridges. Dandalaz masonry arch bridge located on the 4km east of Karacasu town of Aydin, Turkey is selected as a numerical example. The construction year of the bridge is not fully known, but the bridge is dated back to 15th century. Considering the current situation, it can be easily seen that the structural elements such as arch, side walls and timber blocks are heavily damaged and the bridge is unserviceable. Firstly finite element model of the bridge is constituted to reflect the current situation (before restoration) using building survey drawings. After, restoration project is explained and finite element model is reconstituted (after restoration). The structural responses of the bridge are obtained before and after restoration under dead load, live load and dynamic earthquake loads. For both conditions, maximum displacements, maximum-minimum principal stresses and maximum-minimum elastic strains are given with detail using contours diagrams and compared with each other to determine the restoration effect. From the study, it can be seen that the maximum internal forces are consisted under dynamic loads before and after restoration. Also, the restoration projects and studies have important and positive effects on the structural response of the bridge to transfer these structures to future.

• Bulletin of the Korean Chemical Society
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• 제31권8호
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• pp.2289-2292
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• 2010

Long chain dicationic ammonium salts were used successfully as phase transfer catalyst in the condensation reactions of aromatic aldehydes in water under ultrasonic irradiation for the first time. The quaternary salt having longer distance between the cation centers was more effective than the mono- and dicationic ones having short chain.

• 인터넷정보학회논문지
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• 제10권1호
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• pp.63-74
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• 2009

온라인 커뮤니티에서 익명성의 정도에 따라 자기통제의 행동이 달라짐에 관한 많은 연구들이 진행되어왔다. 본 연구는 온라인 커뮤니티에서의 익명성에 대한 개념을 구분하여 객관적이고 기계적인 기술적 익명성과 개인의 주관적인 사회적 익명성으로 정의하고, 익명성의 영향으로 나타나는 자기 통제의 정도와의 관계에 대해 규명하였다. 인터넷 커뮤니티 회원을 대상으로 기술적 익명성, 사회적 익명성, 개인의 유대감, 자기통제 정도를 설문을 통해서 조사한 결과 인터넷 커뮤니티에서 기술적으로 주어지는 익명성은 개인이 가지는 유대감이 낮을수록 개인의 주관적인 사회적 익명성에 강한 영향을 미치고, 기술적으로 주어지는 익명성은 개인의 주관적인 사회적 익명성을 통해서 자기통제에 영향을 미친다는 것을 알 수 있었다. 본 연구는 익명성이 어떻게 해서 개인의 행동에 영향을 미칠 수 있는지 하나의 관점을 제시함으로써 실명제 논의나, 인터넷 사이트의 익명성 정책에 대한 참고자료로 활용될 수 있을 것이다.

• 기술혁신학회지
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• 제14권4호
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• pp.1000-1023
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• 2011

벤처를 지원하는 제도로써 벤처 인증과 이노비즈 인증, 경영혁신기업 인증의 제도 등이 있다. 본 연구는 '2010년 벤처기업정밀실태조사'의 데이터를 이용하여 벤처 인증과 이노비즈(InnoBiz) 인증의 생산적 측면과 기술적 비효율성 측면의 효과를 비교하였다. '벤처 인증'의 경우 정부에서 추측하는 6가지 벤처 인증의 효과 분야 중에서 재무적 효과에서는 생산성을 향상시키지만, 기술적 비효율성 제거에 대해서는 4개 분야에서 효과를 나타내는 것으로 나타났다. 반면 이노비즈 인증의 효과는 직접적 생산성 향상에는 효과가 적었고, 또한 기술적 비효율성 제거에도 다소 미미한 효과를 보였다. 그러나 이노비즈 인증의 경우 인증의 특색인 마케팅 능력제고 분야는 생산성과 기술적 비효율성 모두에서 유의적 효과를 나타내어 이노비즈 인증의 본래의 목표는 달성하고 있음을 보여 주었다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2003년도 학술대회 논문집 전문대학교육위원
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• pp.10-18
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• 2003

A point of doing this research is to give basic data for junior college having matriculation resources in department of electricity majority to the graduate students from Technical high school in department of electricity. We have examined the effect of the 6th and the 7th educational curriculum and courses in department of electricity on technical high school, and analyzed basic subjects of technical high school and detailed major basis subject of junior college in department of electricity by Educational courses and mathematics education contents. Also we have examined tried to secure advantage of major studying on the basis of result of analysis.

• 한국철도학회논문집
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• 제10권2호
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• pp.103-111
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• 2007

The existing design materials by document type are restricted in searching and acquiring necessary design information because the materials consist of huge information and various document types. This study suggests a methodology to develop an electronic technical manual that can manage construction design materials by XML-base integrated information system. Electronic technical manual for design materials can provide visualized information through various multimedia tools such as multi-link, virtual reality and animation. Using an integrated electronic manual for construction project can prevent to miss necessary design information. The results of this study includes a data flow diagram to develop an interactive electronic technical manual (IETM) for construction design information. Finally the study suggests some scenarios for practical use and quantitative analysis of application effect analysis by AHP method.

• 한국자동차공학회논문집
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• 제15권4호
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• pp.154-160
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• 2007

The experimental system, developed in this research, is a teaching material that trains and practices automobile electric circuit in technical high school. This system consists of a textbook, 15 kinds of instruments and 62 kinds of 'Flash' animations. Textbook includes automobile electric circuits and experimental process. Instruments have 23 kinds of drills. Its is composed of electrical relays, motors, switches, light bulbs, electrical lines and power unit so on. 'Flash' animation displays an electrical current flow on circuits actually. Both Dacum method and ISD skill have been conducted to analysis job and design syllabus. The experimental system have been implemented on technical high school class to evaluate its objectivity and effect. It is expected that this system can contribute to studying of car service.

• 한국펄프종이공학회:학술대회논문집
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• 한국펄프종이공학회 2008년도 춘계학술대회
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• pp.290-307
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• 2008

The aim of this study was to estimate adverse effect on compression strength of corrugated fiberboard containers due to vibration during distribution process. Distribution environment such as road conditions and compression strength of corrugated fiberboard containers for selected agricultural products were studied. We found that increasing humidity does not effect significantly on natural frequencies of boxes, but results in accelerative effect to decrease compression strength of boxes. Box structures and product types also effect on loss of compression strength greatly.

• 한국펄프종이공학회:학술대회논문집
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• 한국펄프종이공학회 2001년도 추계학술발표논문집
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• pp.60-66
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• 2001