• 한국진공학회:학술대회논문집
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• 한국진공학회 2013년도 제44회 동계 정기학술대회 초록집
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• pp.601-601
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• 2013

Superhydrophobic W18O49 nanowire (NW) arrays were synthesizedusing a thermal evaporation and surface chemistry modification methods by self-assembled monolayer (SAM). As-prepared non-wetting W18O49 NWs surface shows water contact angle of $163.2^{\circ}$ and has reliable stability in underwater conditions. Hence the superhydrophobic W18O49 NWs surface exhibits silvery surface by total reflection of water layer and air interlayer. The stability analysus of underwater superhydrophobicity of W18O49 NWs arrays was conducted by changing hydrostatic pressure and surface energy of W18O49 NWs arrays. The stability of superhydrophobicity in underwater conditions decreased exponentially as hydrostatic pressure applied to the substrates increased3. In addition, as surface energy decreased, the underwater stability of superhydrophobic surface increased sharply. Specifically, sueprhydrophobic stability increased exponentially as surface energy of W18O49 NWs arrays was decreased. Based on these results, the models for explaining tendencies of superhydrophobic stability underwater resulting from hydrostatic pressure and surface energy were designed. The combination of fugacity and Laplace pressure explained this exponential decay of stability according to hydrostatic pressure and surface energy. This study on fabrication and modeling of underwater stability of superhydrophobic W18O49 NW arrays will help in designing highly stable superhydrophobic surfaces and broadening fields of superhydrophobic applications even submerged underwater.

• 대한인간공학회지
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• 제25권4호
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• pp.71-80
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• 2006

A construction robot has been developed for higher productivity and better safety in various construction fields. Especially, curtain wall is suitable for outer wall material of tall commercial building and apartment complexes. This heavy material is, however, hard to install with a manpower and outdated equipment. For this reason, the prototype of ASCI (Automation System for Curtain wall Installation) was developed. This system has a robot controller(i.e. hand-held remote control unit) for the transfer information signal between human operator and robot system. Although study has been conducted on manual controller of ASCI, hardly any information is known about the operator's opinion. In this study, a questionnaire was completed by operator to get their opinion about aspects which need to design a more comfortable and productive manual controller of construction machinery, robot included. Through the result of study, it is expected that this technical data is contributed to the robot controller design for comfort and productivity of various industrial machinery.

• International journal of advanced smart convergence
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• 제5권4호
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• pp.48-53
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• 2016

In this paper, all elements used in integrated infrastructure for job competency assessments of NCS (National Competency Standards) will be merged into assessment system using multiple devices(ASMD). NCS is a systematic approach on required abilities (knowledge, technical expertise, attitude) to process the tasks in the fields by industry. Competiveness of ASMD design is that no limitation of time and space using personal devices like PC, laptop, smartphone, and tablet, while seeing screen, hearing, touching, speaking, and writing. Question type can be limitless to express the situation. To lead technologies and market for domestic and oversea assessment system, supporting on multiple devices with connectivity that will eliminate limitation of time and space is the key feature for design competitiveness. Design of integrated assessment system proposed in this paper can be applied to NCS, fundamental competency evaluation, online test, job aptitude test, and foreign language test which involve listening, reading, writing, and speaking. Compared with existing evaluation method, reduction of investment and operating cost will be greater. Along with development of ICT technologies, the next generation of integrated assessment system will be quickly changed to ASMD, which already involves connected service between internet and smart devices.

• 복식
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• 제60권10호
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• pp.47-64
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• 2010

This study was to define the factors of inspiration and expression methods of Viktor & Rolf known for distinctive works in order to find the ways of creative fashion designing. For the research method, the literature reviews were done by designer's books, collection reviews, and related articles. To find the ideas of design inspiration, interview data with Viktor & Rolf were used. The results of this study were as follows. Their conceptional attitude and the fashion shows like performance indicated that the designer's introspection became the origin of the concept and the ideas expanded the fields of expression. The expression of surrealistic fantasy was done by free imagination and daydreams, which was appeared as fantastical world beyond the everyday life. The expression of paradox and contrast overcame stereotype views with inversion, paradox, and ironical expression. The distortion of shape and the extreme exaggeration by overlap and repetition had a intention that magnity the miserable self-images on purpose, which had started from the debut and appeared ever after on collections and which sought the practicality, infinity exceeding the standard of ideal beauty. The harmony between classicism and avant-guard originated from the insights of tradition demonstrated the wits of designers showing the unique ideas with the base of classics.

• 스마트미디어저널
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• 제5권3호
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• pp.25-29
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• 2016

본 논문에서는 인체의 전자기장을 측정하는 EPS(Electronic Potential Sensor)를 이용하여 비접촉 동작인식 시스템에 적용하기 위한 연구를 진행하였다. 센서에서 나오는 데이터를 이용하여 동작인식에 적합한 시스템을 설계하기 위한 신호 수집 및 신호처리 시스템을 구현하였다. AC 형태의 입력 데이터 값에 10Hz LPF(Low Pass Filter) 및 H/W 샘플링 속도를 고려하여 선형적인 DC 형태의 데이터로 변형하였다. 센서간의 배열을 고려한 데이터 차분 과정을 통해 목표물의 2차원 움직임 정보를 추출하여 전체 시스템에 대한 특성평가를 수행하였다.

• 한국실내디자인학회논문집
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• 제18권1호
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• pp.72-79
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• 2009

Due to characteristics of modern society including technological development, various methods engaging interaction between people and manmade environment have become one of the major issues raised in various fields of deign so called interactive design. Interactive design started as the interface between human and computer system, but now expanded to interior design field enhancing spatial experience of users. Now, many corporates are looking into interactive design to bridge the gap between company or brand identity and consumers as marketing tool. The current study investigates interactive concepts and characteristics of corporate participated public spaces and tries to define their design methods according to spatial marketing strategies. Using theoretical inquiry, cultural events and delivery of corporate identity information were defined as two major spatial strategies through cognitive or behavioral approaches. Moreover, digital, constructive, and expressive presentations were found to be most common design methods. Through this theoretical framework, 7 selected samples in Korea are analyzed in order to find detailed design characteristics. It is hoped that this study may serve in understanding current design approaches of interactive corporate public spaces and useful guideline when designing interactive public spaces not only as means of marketing strategies but even for public goods.

• 산업공학
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• 제23권1호
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• pp.35-47
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• 2010

This paper presents a structured framework for developing the embedded subsystem, called ESDMP (Embedded Subsystem Development Methodology for POP), which is one of core components at the development of POP (Point Of Production) system. It is essential that embedded subsystem development methodology must be closely related to the general information system development methodology from the early stage of system development. Therefore, this paper investigates the PDSM (Production System Development Methodology) that is developed by Korea Technology and Information Promotion Agency for SMEs and widely utilized at the fields of POP system development, and proposes the embedded subsystem development methodology aligned with each step of PSDM. The main characteristics of proposed methodology are as follows : First, it is developed to link each step of embedded subsystem development with relating steps of PSDM from the early stage of feasibility study. Second, it provides the procedure for designing and implementing hardware and software simultaneously. Third, it includes the method of reusability for developed products and modules.

• 한국정밀공학회지
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• 제29권7호
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• pp.778-784
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• 2012

In comparison with some other light sources, LED has merits such as increased life expectancy, fast response, pollution free, and high energy efficiency. Lately, due to development of LED with high brightness and capacity, LED has widely used in many industrial fields such as automotive, aviation, display, transportation and special lighting applications. Since the high heat generation of LED chips can cause a reduction in lifetime, degradation of luminous efficiency, and variation of color temperature, studies have been carried out on the optimization of LED packaging and heat sinks. In this study, experiments on measuring the heat generation rate of LED and the cooling performance of a heat sink were carried for analyzing the thermal characteristics of LED lighting system in free convection. From the results, dimensionless correlation on the cooling performance of heat sink in natural convection was proposed with Nusselt number and Rayleigh number as a guideline for designing cooling device of LED lightings.

• 패션비즈니스
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• 제6권3호
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• pp.15-27
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• 2002

A uniform is generated in the course of confirming a singular mode of dress that is adopted by a community for a specific purpose. In particular, women's uniform has a close relations to their position in the community they belong to. And women's uniform has closely been associated with finding ways into their communities over the centuries, and is part of women's development process. Women's history of using organized uniforms has not been longer than men's. Their realm of activities began to be enlarged due to the World War, and women's uniform has gradually settled down and moved toward diversity. The origin of many uniforms worn by today's women can be traced back to the end of the last century, and this fact indicates that women started to find their ways into many new fields at that time. There has been a lot of changes until current women's uniforms come out. It's intended in this study to contribute to designing more creative and productive women's uniform, by taking a careful look at typical early uniforms for service personnels, nannies, nurses and soldiers that are an indication of their work and working environment.

• Structural Engineering and Mechanics
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• 제73권1호
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• pp.17-25
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• 2020

A finite element (FE) model for analyzing slender reinforced high-strength concrete (HSC) columns under biaxial eccentric loading is formulated in terms of the Euler-Bernoulli theory. The cross section of columns is divided into discrete concrete and reinforcing steel fibers so as to account for varied material properties over the section. The interaction between axial and bending fields is introduced in the FE formulation so as to take the large-displacement or P-delta effects into consideration. The proposed model aims to be simple, user-friendly, and capable of simulating the full-range inelastic behavior of reinforced HSC slender columns. The nonlinear model is calibrated against the experimental data for slender column specimens available in the technical literature. By using the proposed model, a numerical study is carried out on pin-ended slender HSC square columns under axial compression and biaxial bending, with investigation variables including the load eccentricity and eccentricity angle. The calibrated model is expected to provide a valuable tool for more efficiently designing HSC columns.