• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2009년도 추계학술대회 논문집
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• pp.254-254
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• 2009

Single-walled carbon nanotubes (SWCNTs) have attracted much attention as promising materials for transparent conducting films (TCFs), thanks to their superior electrical conductivity, high mechanical strength, and complete flexibility. The CNT-based TCFs can be used in a variety of application fields as flexible, transparent electrodes, including touch panel screens, flexible electronics, transparent heaters, etc. First of all, this study investigated the effect of a variety of surfactants on the dispersion of SWCNTs in an aqueous solution. Following the optimization of the dispersion by surfactants, flexible TCFs were fabricated by spraying the CNT suspension onto poly(ethylene terephthalate) (PET) substrates. The sheet resistances of the TCFs having different surfactants were investigated with treatment in nitric acid ($HNO_3$) whose concentration and period of treatment time were varied. It seems that the $HNO_3$ removes the surfactants from and is simultaneously doped into the SWCNT network, reducing the contact resistance between CNTs. TCFs were characterized by UV-VIS spectroscopy, thermogravimetric analyzer (TGA), scanning electron microscopy (SEM), and four-point probe.

• 한국가구학회지
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• 제22권1호
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• pp.42-53
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• 2011

This article aimed at identifying the concept of 'artistic-quality' of furniture and presenting the concept of 'artistic-quality based furniture creation' as the future direction of furniture design. For this, the authors approached to the theoretical background of the concept of artistic-quality, and then examined the prospect of practical application of the concept by analyzing the tendencies in today's art furniture. In this light, 'artistic-quality' of furniture could be understood as a quality that triggers the designer's venturous spirit throughout the process of furniture creation, so that the designer keeps seeking for the novelty and innovation in his experimental design and process. The feature of the current tendencies of art furniture in terms of the expression and effect, which could explain this venturous spirit of artistic-quality based furniture creation, could be summarized as follows; first, High-touch: Furniture that exemplifies the artistic-quality by specific texture of handmade quality, second, High-feeling: Furniture that arouses the new feelings and new concepts of furniture structure & function by experiments on new abstract forms of furniture, and third, High-mentality: Furniture that leads us to the sphere of subtle aesthetic recognition and mentality with its specific poetic expression and sensibility.

• 한국항공운항학회지
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• 제24권4호
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• pp.53-61
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• 2016

Air Traffic Controllers (ATC) are also essential to the efficiency of airports and the airline industry. With the increasing volume of traffic, managing flights is a complex and sometimes very stressful job. ATC is using radar and other technology to track planes 'en route' between airports and keep in touch with pilots. Alternatively, ATCs are liaising with the planes on approach. However, ATC's working condition is getting more stressful, as the volume of air traffic increases. Thus this paper tried to research cognitive emotional regulation, job satisfaction, and job involvement and organizational committment of ATCs under the stressful work condition, taking care of safety of a couple of hundreds passengers per plane. Using CERQ survey sheet (Cognitive Emotional Regulation Questionnaire), it was found out that positive thinking and acceptance of self-blame have a significant impact on job satisfaction, work absorption and organizational Loyalty.

• Asia pacific journal of information systems
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• 제15권2호
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• pp.23-49
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• 2005

Recently, owing to the rapid growth of the Internet and information technology, the growth of the Internet shopping mall has been truly phenomenal. In the Internet shopping mall, as the customers can't touch a product directly, trust is important factor in purchasing intention. Many researchers proposed direct relationship between the customer trust and the purchasing intention. We supposed that there would be some factors that could be the consequences of trust in on-line purchasing decision, and the factors could be also the determinants of purchasing intention and decision for the Internet shopping mall customers. We found out that there were indirect relationship between them through the customer's attitude, involvement, and royalty to the site rather then directly related. Particularly, the correlation between the site attitude and the purchasing intention was high, but the direct effect was not significant. The site attitude was indirectly related to the purchasing intention through the customer involvement and loyalty. This means that the customer relationship involvement and loyalty enhancement strategies are more important for the success of Internet shopping mall.

• Weed & Turfgrass Science
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• 제7권2호
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• pp.98-110
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• 2018

The fragrance has a great influence on consumers' cognition, emotional response, attitude, memory, and behavior since the human sense of fragrance is physically and neurologically closer to the hippocampus of the brain. The fragrance materials are exposed to humans ranging from skin interaction to inhalation. We have lots of stories and literature on the usage of fragrance in everyday life in Korea from the Dangun myth to present K-beauty cosmetics. In Korean history, such archives as Dong-Eui-Bo-Gam and Gyu-Gak-Chong-Seo at Joseon Dynasty clearly recorded the application of many weeds for the manufacture of various fragrance products. In recent times, fragrances in weeds have been being applied to touch the consumer's feelings. The present mini-review is an attempt to introduce and discuss fragrant weeds in the archives and in science journals, effects of fragrant weeds on the human electroencephalographic activity, and effects of fragrance on the behavior of consumers. This review could be useful for the development of natural cosmetic and perfumery products from fragrant weeds.

• Transactions on Electrical and Electronic Materials
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• 제16권1호
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• pp.29-33
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• 2015

This paper presents the results of the optical characteristics of ITO thin film with different buffer layer thicknesses of $SiO_2$ and $Nb_2O_5$ for touch sensor application. $SiO_2$ and $Nb_2O_5$ buffer layers were deposited using RF magnetron sputtering equipment. The buffer layers were inserted between glass and ITO layers. In order to compare with the experimental results, the Essential Macleod Program (EMP) was adopted. Based on EMP simulation, the [$Nb_2O_5{\mid}SiO_2{\mid}ITO$] multi-layered thin film exhibited high transmittance of more than 85% in the visible region. The actual experimental results also showed transmittance of more than 85% in the visible region, indicating that the simulated results were well matched with the experimental results. The sheet resistance of ITO based film was about $340{\Omega}/sq$. The surface roughness maintained a relatively small value within the range of 0.1~0.4 nm when using the $Nb_2O_5$ and $SiO_2$ buffer layers.

• 한국농업기계학회:학술대회논문집
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• 한국농업기계학회 2000년도 THE THIRD INTERNATIONAL CONFERENCE ON AGRICULTURAL MACHINERY ENGINEERING. V.II
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• pp.300-306
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• 2000

This paper introduces a new concept of automation for bio-production with tele-operative system. The proposed system showed practical and feasible way of automation for the volatile bio-production process. Based on the proposition, recognition of the job environment with object identification was performed using computer vision system. A man-machine interactive hybrid decision-making, which utilized a concept of tele-operation was proposed to overcome limitations of the capability of computer in image processing and feature extraction from the complex environment image. Identifying watermelons from the outdoor scene of the cultivation field was selected to realize the proposed concept. Identifying watermelon from the camera image of the outdoor cultivation field is very difficult because of the ambiguity among stems, leaves, shades, and especially fruits covered partly by leaves or stems. The analog signal of the outdoor image was captured and transmitted wireless to the host computer by R.F module. The localized window was formed from the outdoor image by pointing to the touch screen. And then a sequence of algorithms to identify the location and size of the watermelon was performed with the local window image. The effect of the light reflectance of fruits, stems, ground, and leaves were also investigated.

• The Journal of Korean Physical Therapy
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• 제24권3호
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• pp.198-201
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• 2012

Purpose: We investigated to evaluate the effectiveness of water-based exercise (WE) program on respiratory functions for children with spastic diplegic cerebral palsy (CP). Methods: Fourteen children with spastic diplegic CP were randomly assigned, to either the experimental group (EG, n=7), or the control group (CG, n=7). Respiratory function was measured by a spirometer, a CardioTouch 3000S ( Bionet, Seoul, Korea) at a chair-sitting posture. Forced vital capacity (FVC), forced expiratory volume at one second (FEV1), peak expiratory flow (PEF) were measured. The intervention program will last 8 weeks, with three 40 minutes sessions per week (24 training session). The usual care and the addition of a WE program, were compared in the CG and EG, respectively. Results: The EG showed a significant increase in the FVC, FEV1, PEF after training (p<0.05), whereas there was no significant difference in the CP after training. In the EG, FVC increased significantly, compared to the control group (p<0.05), but not FEV and PEF. Conclusion: These findings suggest that WE program have an effect on the respiratory function in children with spastic diplegic CP.

• Tribology and Lubricants
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• 제29권3호
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• pp.167-170
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• 2013

The friction behavior of human skin is determined by the complex interplay of the material and surface properties of the skin, as well as the contacting material, and strongly depends on the contact parameters (e.g., pressure and sliding velocity) and the presence of substances such as water, sweat, or skin surface lipids at the interface. Including a study on the effect of a surface's physical roughness for skin sliding over the surface, various studies have been conducted to understand human tactile sensibility. However, to investigate products in relation to human tactile sensibility, more objective research is needed. This study performed sliding experiments between the skin and the surfaces of phone cases to understand how the texture, friction, and stick-slip characteristics are related. Eight phone case surfaces with different topologies and chemical (or mechanical) compatibilities with skin were prepared and tested multiple times.

• 감성과학
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• 제3권1호
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• pp.41-52
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• 2000

한·미 문화간 비교를 통하여 직물의 소리와 촉감이 주관적 감각에 미치는 영향을 고찰하고자 한국인과 미국인 각각 30명을 대상으로 의미분별척도에 의하여 서로 다른 8개 직물 소리의 주관적 감각(부드러움, 시끄러움, 유쾌함, 날카로움, 맑음, 거친, 높음)과 촉감의 주관적 감각 (딱딱함, 매끄러움, 성김, 시원함, 유연함, 까실거림, 무게, 두께)을 측정하였다. 직물 소리의 파라미터로 LPT(level pressure of total sound)와 Δf (frequency differences)를 계산하고, KES (Kawabata Evaluation System)을 이용하여 직물의 역학적 성질을 측정하였다. 직물의 소리에 대하여 ‘부드러움’의 점수가 높고 ‘시끄러움’과 ‘날카로움’, ‘거침’의 점수가 낮은 직물들이 주관적으로 유쾌하게 느껴지는 것으로 나타났다. 직물에 따른 소리의 시끄러움과 날카로움, 높음에 대한 주관적 감각은 한·미 간에 유사한 경향을 보였으나, 한국인은 미국인보다 모직물의 소리에 대하여 ‘부드러움’과 ‘유쾌함’의 점수가 높고, ‘거침’의 점수가 낮았으며, ‘맑음’에 대한 직물별 점수가 다양하였다. 직물의 촉감은 직물에 따른 차이가 더 다양하게 나타났다. ‘딱딱함’과 ‘매끄러움’의 직물 별 감각은 한 ·미 간에 유사한 경향을 보였는데, 한국인은 대체로 미국인보다 ‘성금’과 ‘까실거림’을 낮게, ‘시원함’을 높게 평가하였다. 직물 소리의 파라미터인 LPT와 ΔL이 양국인의 소리 감각에 영향을 미쳤는데, 한국인의 감각은 주로 LPT가, 미국인의 감각은 LPT와 ΔL이 함께 영향을 미치는 회귀식이 성립하였다. 촉감에서 ‘딱딱함’과 ‘매끄러움’, ‘유연함’, ‘까실거림’에 한·미 모두 표면 거칠기가 영향을 미쳤는데, 한국인의 촉감에 대한 회귀식이 더 많이 성립하였고 R2가 높게 나타났다.