• 한국실내디자인학회논문집
• /
• 제24권1호
• /
• pp.197-206
• /
• 2015

The purpose of this study is to analyze characteristic interior spaces for TV news center studio. Based on eight channels including public and comprehensive programming broadcasting stations the method for this research is to make differentiate existing relevant literature by creating analysis items for interior spaces through various case studies as well as find out characteristics of spatial forms, colors, materials, decorations, and etc. The conclusions are as follows. Firstly, spatial form of desk and ceiling are similar shapes but floor and wall are different comparing with public and comprehensive programming broadcasting stations. Secondly, preferred color for floor and ceiling is black, for wall and desk are blue and gray. Thirdly, various materials are preferred between public and comprehensive programming broadcasting stations. Fourthly, Flat and elevated floors are preferred as well as space and logos of broadcasting station are preferred for background images as decoration elements. Lastly, Soffit ceiling, desk accommodating more than 4 people, spotlight for public broadcasting stations, and architectural lighting for comprehensive programming broadcasting stations are preferred.

• 한국염색가공학회지
• /
• 제25권2호
• /
• pp.89-93
• /
• 2013

The electrochemical study has been enjoyed in many areas of chemistry. Through this approach using electrochemical measurement, empirical HOMO and LUMO values can be calculated by three methods such as absorption measurement, cyclicvoltammetry and computational calculations. In this study, 1,3-bisdicyanovinylindane was prepared and investigated toward its optical properties. The absorption intensities were changed depending on changes of pH. These absorption changes are induced by resonance form of 1,3-bisdicyanovinylindane. The electron delocalization in ${\pi}$ system is related to the resonance form. In according to this electron density distribution and HOMO/LUMO values of 1,3-bisdicyanovinylindane were simulated and calculated by Material Studio 4.3, absorption measurement and cyclicvoltammograms. The 1,3-bisdicyanovinylindane is one of the most attracted acceptor units in D-${\pi}$-A system. This attempt is useful to determine more detailed characteristics of the energy potentials.

• 대한전자공학회논문지TC
• /
• 제47권4호
• /
• pp.38-42
• /
• 2010

본 논문에서는 슬롯형 분할 나선형 공진기를 이용하여 마이크로스트립 기판상에 구현될 소형 협 대역통과 필터설계기법을 제안한다. 이 필터의 설계기법은 슬롯형 분할 나선형 공진기, 패치사이의 용량성 갭, 그리고 미앤더 구조를 가진 유도성 스터브의 조합으로 구성된 필터 단들의 종속 연결에 근거를 두고 있다. 그 기법하에서 거의 대칭인 필터응답, 가변 대역폭, 그리고 소형필터를 구현할 수 있었다. 제안된 필터는 기존의 필터보다 저지대역에서 우수한 차단특성을 가졌다. 측정결과, 삽입손실은 중심주파수($f_0$=1GHz)에서 -3.47dB, 통과대역에서 -12.62dB 이하, 3dB 대역폭은 약 7.3%로 나타났다. 제작된 필터의 관심 영역 주파수응답은 CST사의 MWS(Microwave Studio)로 전산모의 실험된 값과 잘 일치되었다.

• Advances in nano research
• /
• 제9권2호
• /
• pp.83-90
• /
• 2020

This research investigates the effect of single walled carbon nanotubes (SWCNTs) dimensions in terms of diameter on the mechanical properties (longitudinal and transverse Young's modulus) of the simulated nanocomposites by molecular dynamics (MDs) method. MDs utilized to create nanocomposite models consisting of five case studies of SWCNTs with different chiralities (5, 0), (10, 0), (15, 0), (20, 0) and (25, 0) as the reinforcement and using polymethyl methacrylate (PMMA) as the common matrix. The results show that with increasing of SWCNTs diameter, the mechanical and physical properties increase. It is important that with the increasing of SWCNTs diameter, density, longitudinal and transverse Young's modulus, shear modulus, poisson's ratio, and bulk modulus of simulated nanocomposite from (5, 0) to (25, 0) approximately becomes 1.54, 3, 2, 1.43, 1.11 and 1.75 times more than (5, 0), respectively. Then to validate the results, the stiffness matrix is obtained by Materials studio software.

• 한국진공학회:학술대회논문집
• /
• 한국진공학회 2012년도 제42회 동계 정기 학술대회 초록집
• /
• pp.180-180
• /
• 2012

A microplasma system source based on microwave parallel stripline resonator (MPSR) was developed for the generation of microplasmas in a wide range of pressure from some torr to 760 torr. This source was operated at its resonance frequency that much depends upon not only its discharge gap size but also operated pressure. This paper applied a simple circuit model to analyze the effects of discharge gap size and pressure to resonance frequency and impedance of MPSR in the cases with and without plasma exist inside the discharge gap. In the process of calculating, the conformal mapping method was used to estimate the capacitance of the MPSR. The calculating results by using circuit model agree well with the simulation results that using commercial CST microwave studio software.

• 한국실내디자인학회논문집
• /
• 제27호
• /
• pp.12-19
• /
• 2001

The purpose of this study is to develope instructional strategies and assessment model for distance learning in interior design education in Korea. Literature from various sources were examined to provide guidelines for instructional and technical strategies, communication system, and administrative process. Strategies and assessment model for transition to distance learning from goal setting to program evaluation were introduced. The results of this study indicated that distance learning in interior design education is optimized when applied in studio critique, portfolio production, and professional practice and with other traditional programs depending on the characteristics of the instructional materials. It is suggested for further studies that various distance learning programs based on instructional theories to be conducted and evaluated in different areas of interior design education for their maximum application as instructional tool.

• 산업경영시스템학회지
• /
• 제30권2호
• /
• pp.29-36
• /
• 2007

This study was concerned about mobile web-service of a VMI in the SCM system. The VMI would be a main module part of the SCM and regarded as very important thing on supply chain. Therefore, it was essential to react in real time of materials production and situation of used auto-part in procurement company. We could find an affordable method to realize the VMI in a web service. The web service has made inter relevant enterprise easy to collaborate because of supporting most operating system and frame-work. Moreover, the use of a mobile tools was guaranteed a product recording and requirement of materials to real time in a rapid changing of production environments. The result of this research was very useful to apply the VMI system in medium and small sized auto parts company. This web service package has programmed the Visual Studio Dot Net 2003 and the MS SQL 2000 as database.

• 한국실내디자인학회논문집
• /
• 제30호
• /
• pp.59-67
• /
• 2002

Marcel Breuer is considered one of the most important furniture designers of the 20th century. He studied at the Bauhaus in Weimar from 1920 to 1924 and in 1925 became master of the furniture studio at the Bauhaus in Dessau. Virtually from the outset, he was one of the most prolific and inventive designers at the bauhaus and fulfilled its claim to create designs for serial production. Gropius, the Bauhaus founder, had a profound influence on his furniture designs. In 1925, Breuer created the tubular-steel armchair, which revolutionized design and technique in the field, marking the advent of a new era. The furniture that was developed, by him and by others, from this design - technically cool, but light, elegant and clear - became the very symbol of modernism. Despite the success of his tubular-steel furniture, Breuer went on to explore the use of other new materials, such as aluminium and plywood. He made use of these new materials, which were associated with new technologies, to create new forms, as it were, some which proved to be foreunners of later developments in furniture design. Breuer had a profound influence on the evolution of modern design through his furniture designs, which received worldwide recognition and acclaim. His work unified functionality and beauty in a way that was to become a valid expression of its time and simultaneously far ahead of it.

• 한국기계가공학회지
• /
• 제20권5호
• /
• pp.8-16
• /
• 2021

This study develops a shaft analysis model for the optimization of the power transmission system. The finite element method was used for the shaft analysis model. The shaft and gear were assumed Timoshenko beams. Strength was evaluated according to DIN 743, and gear misalignment was calculated through ISO 6336 and the coordinate system rotation. The analysis software for a power transmission system was developed using Visual Studio 2019. The analysis results of the developed program were compared with those of commercial software (MASTA, KISSsoft, and Romax). We confirmed that the force, deformation, and safety factors at each node were the same as those of the commercial software. The absolute value of the gear misalignment of the developed program and commercial software was different. However, the gear misalignment tended to increase with increasing the displacement in the tooth width direction.

• 한국산학기술학회논문지
• /
• 제21권2호
• /
• pp.58-65
• /
• 2020

3D CAD 시스템으로 설계된 해양플랜트 배관재 모델들은 2D 배관 제작도와 설치도의 형태로 생산 공정에 제공되고, 기본 엔지니어링 정보와 함께 통합 공정관리시스템에서 원자재의 구매, 조달, 제작, 설치 및 검사가 체계적으로 관리되어 진행된다. 기존의 통합 공정관리시스템은 자원의 흐름 및 진행 상황을 체계적으로 관리하여 공정 시수 절감에 많은 기여를 하고 있지만, 3D 설계 형상 모델 정보를 포함하고 있지 않기 때문에 배관 설치 작업 전에 복잡한 배관 구조를 파악하거나, 잦은 설계 변경으로 인해 연관된 도면을 찾을 때 상호간 신속한 정보 교류가 어려운 단점을 가지고 있었다. 이러한 문제점을 해결하기 위해 3D 모델을 기반으로 하는 해양플랜트 배관 공정 모니터링 시스템을 개발하였다. 본 시스템은 3D 모델 기반 배관 모니터링 시스템은 Visual Studio 2017 C#과 UNITY3D를 기반으로 배관 공정 작업 정보가 3D CAD 모델과 실시간 연동될 수 있도록 구성하였다. 그리고 블록, 크기, 재료에 따른 배관 설치 공정 진행 흐름 뿐만 아니라, 청소, 수압검사, 공압검사 등 기능 검사 항목별 진행 흐름을 3D 모델상에서 실시간으로 확인할 수 있도록 하였다. 작업자는 개발된 시스템을 통해 생산 현장에서 실시간으로 배관 공정 진행 흐름을 포함한 3D CAD 모델을 쉽게 파악함으로써 작업 효율성 향상에 많은 기여를 할 것으로 기대된다.