• 패션비즈니스
• /
• 제20권3호
• /
• pp.119-132
• /
• 2016

Weighting of silk fabrics have long been practiced in silk fabric trading based on the primary consideration of price-weight, and secondary one of quality improvement in handle, luster, and drape properties. Recent trend of practicing weighting of silk fabrics is, however, focused on the improvement of the handle, luster, drape, and other properties. During the finishing processes of synthetic fiber, nylon, comprising amide structure, include the use of tannic acid, especially in the dyeing. A multitude of studies are being implemented in terms of improving fastness to washing, fastness to light of dyed nylon product, or the light fastness of nylon 6 itself. In this study, the effects of various tannic acid treatments on the physical properties related to the handle of nylon 6 and silk fabrics are examined and reviewed. The effects of treatment condition of the tannic acid, e.g., the concentration of the aqueous tannic acid solution, treatment time, and temperature were investigated. As the concentration of the aqueous solution of tannic acid increased, the bending rigidity values of the silk and nylon 6 fabrics increased. The treated fabrics felt stiff to the touch. Within the mild conditions of bending employed in the bending measurement of KES, nylon 6 treated fabric specimen exhibited a trend of improvement of bending resiliency within the range of small bending deformation. The weight of treated fabrics have all increased. The air-permeability values decreased as the treatment concentration increased. However, the decrease tendency of air permeability values may be alleviated by adjusting the fabric count during the tentering or expanding processes, either by tension adjustment or heat treatment. Optimum conditions of the treatment for nylon 6 are 1.25% tannic acid concentration, bath temperature of $85^{\circ}C$, pH 3.1, and those for silk fabric treatment are 1.25% tannic acid concentration, bath temperature of $85^{\circ}C$, pH 3.1. The treatment conditions will lead to the improvement in the properties of fabrics for summer.

• International Journal of Internet, Broadcasting and Communication
• /
• 제10권1호
• /
• pp.71-76
• /
• 2018

The technology convergence of television, communication, and computing devices enables the rich social and entertaining experience through Smart TV in personal living space. The powerful smart TV computing platform allows to provide various user interaction interfaces like IR remote control, web based control, body gesture based control, etc. The presently used smart TV interaction user control methods are not efficient and user-friendly to access different type of media content and services and strongly required advanced way to control and access to the smart TV with easy user interface. This paper propose the optical wireless communication (OWC) based remote controller design for Smart TV using smart device Flashlights. In this approach, the user smart device act as a remote controller with touch based interactive smart device application and transfer the user control interface data to smart TV trough Flashlight using visible light communication method. The smart TV built-in camera follows the optical camera communication (OCC) principle to decode data and control smart TV user access functions according. This proposed method is not harmful as radio frequency (RF) radiation does it on human health and very simple to use as well user does need to any gesture moves to control the smart TV.

• 한국진공학회:학술대회논문집
• /
• 한국진공학회 2010년도 제39회 하계학술대회 초록집
• /
• pp.168-168
• /
• 2010

Transparent conduction oxides (TCOs) films is extensively reported for optoelectronic devices application such as touch panels, solar cells, liquid crystal displays (LCDs), and organic light emitting diodes(OLEDs). Among the many TCO film, indium tin oxide(ITO) is in great demand due to the growth of flat panel display industry. However, indium is not only high cost but also its deposits dwindling. Therefore, many studies are being done on the transparent conductive oxides(TCOs). We fabricated a target of IZTO(In2O3:ZnO:SnO2=70:15:15 wt.%) reduced indium. Then, IZTO thin films were deposited on glass substrates by pulsed DC magnetron sputtering with various oxygen flow ratio. The substrate temperature was fixed at the room temperature. We investigated the electrical, optical, structural properties of IZTO thin films. The electrical properties of IZTO thin films were dependent on the oxygen partial pressure. As a result, the most excellent properties of IZTO thin films were obtained at the 3% of oxygen flow rate with the low resistivity of $7.236{\times}10^{-4}{\Omega}cm$. And also the optical properties of IZTO thin films were shown the good transmittance over 80%. These IZTO thin films were used to fabricated organic light emitting diodes(OLEDs) as anode and the device performances studied. The OLED with an IZTO anode deposited at optimized deposition condition showed good brightness properties. Therefore, IZTO has utility value of TCO electrode although it reduced indium and we expect it is possible for the IZTO to apply to flexible display due to the low processing temperature.

• 교육시설 논문지
• /
• 제27권3호
• /
• pp.3-14
• /
• 2020

The purpose of this study is to discuss the planning direction of educational spaces to support children's healthy and creative learning based on bio_philic theory. This study analyzed the characteristics of the application of biophilic patterns in children's education space through case analysis. The conclusion of this study is summarized as follows. As a result of the analysis of children's classroom space, the pattern of 'A(Visual connection with nature), F(Dynamic & Diffuse Light), K(Prospect)' shows high application rate, but the pattern of 'C(Non-Rhythmic Sensory Stimuli), G(Connection with Natural Systems), I(Material Connection with Nature)' shows low application rate. In particular, there is a lack of connection with patterns such as hearing, smell, touch, taste stimulation and water experience, and curiosity through exploration of nature about 'B(Non-visual connection with nature), E(Presence of Water), N(Risk/Peril)' changes in nature and ecosystem. In the corridor and rest space, the pattern of 'A(Visual connection with nature), D(Thermal & Airflow Variability), F(Dynamic & Diffuse Light), G(Connection with Natural Systems), K(Prospect)' shows high application rate, but 'B(Non-visual connection with nature)' shows low application rate. In addition, the application of patterns related to the stimulation of curiosity through direct exploration of nature and the exploration of the patterns of 'E(Presence of Water), N(Risk/Peril)' is insufficient. Therefore, in the case of classroom spaces, the active use of nature as it is should be considered within the scope that does not cause visual confusion, and it should provide an area that can be experienced through the five senses. And corridors and rest spaces should be designed to introduce more active natural elements as spaces to recover stress caused by learning. In other words, the characteristics of children's education facilities need to be connected between classroom space, corridor, rest space and external space. This study is meaningful in that it analyzes and derives the application characteristics of 'biophilic design' which affects the 'Attention Restoration' of children's educational spaces through foreign cases.

• 한국초지조사료학회지
• /
• 제5권3호
• /
• pp.207-211
• /
• 1985

본(本) 시험(試驗)은 비음(庇陰)(Light: 100, 80, 60, 40, 20%) 및 시비(施肥) (다비(多肥); N30kg-$P_2O_5\;35kg-K_2O\;30kg$, 보비(普肥); N20kg-$P_2O_5\;25kg-K_2O\;20kg$, 소비(少肥); N10kg-$P_2O_5\;15kg-K_2O\;10kg$) 조건하(條件下)에서 재배(栽培)된 혼합목초(混合牧草) 및 orchardgrass와 나지(裸地)에서 재배(栽培)된 혼합목초(混合牧草) 및 혼합야초(混合野草)를 재래산양(山羊)에 공시(供試)하여 비음(庇陰)이 채식기호성(採食嗜好性)에 미치는 영향과, 비음도(庇陰度) 50%의 임간초지(林間草地)와 나지초지(裸地草地)에서 재래산양을 공시하여 비음(庇陰)이 방목습성(放牧習性)에 미치는 영향을 구명하였다. 본(本) 시험(試驗)은 $1983{\sim}1984$년 까지 충남대학교 시험포장에서 실시되었으며 얻어진 시험결과(試驗結果)는 다음과 같다. 1. 임간재배(林間栽培) 목초(牧草)의 건물(乾物)섭취량, R.I.I 및 Touch number는 비음도(庇陰度) 및 시비수준(施肥水準)에 따라 영향을 받았으며 비음도(庇陰度) 및 시비수준(施肥水準)이 증가함에 따라 $NO_3-N$(%)가 증가된 반면에 soluble carbohydrate(%)는 감소되는 경향이었다. 따라서 임간초지(林間草地)에서는 가축(家畜)의 기호성(嗜好性) 감소에 따른 초지이용(草地利用)의 저하가 염려되며 특히 비음도(庇陰度) 60% 및 다비조건하(多肥條件下)에서는 nitrate stress가 예상된다. 2. 임간초지(林間草地)의 방목습성(放牧習性)은 일반초지(一般草地)에 비하여 채식시간(採食時間)이 증가되고 일중(日中)의 주(主) 채식시간(採食時間)도 편중됨이 없이 계속해서 채식하는 경향을 나타낸다. 따라서 임간초지(林間草地)의 이용(利用)은 비음(庇陰)의 특성(特性)을 고려하여 8월(月) 고온기(高溫期) 집중이용(集中利用)하는 것이 효과적(效果的)이라 생각된다.

• 한국가구학회지
• /
• 제22권1호
• /
• pp.42-53
• /
• 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.

• 한국정밀공학회지
• /
• 제21권4호
• /
• pp.57-63
• /
• 2004

This paper describes a method for digitizing the compound surfaces which are comprised of several unknown feature shapes such as base surface, and draft wall. From the reverse engineering's point of view, the main step is to digitize or gather three-dimensional points on an object rapidly and precisely. As well known, the non-contact digitizing apparatus using a laser or structured light can rapidly obtain a great bulk of digitized points, while the touch or scanning probe gives higher accuracy by directly contacting its stylus onto the part surface. By combining those two methods, unknown features can be digitized efficiently. The paper proposes a digitizing methodology using the approximated surface model obtained from laser-scanned data, followed by the use of a scanning probe. Each surface boundary curve and the confining area is investigated to select the most suitable digitizing path topology, which is similar to generating NC tool-paths. The methodology was tested with a simple physical model whose shape is comprised of a base surface, draft walls and cavity volumes.

• Current Photovoltaic Research
• /
• 제3권2호
• /
• pp.50-53
• /
• 2015

Indium (In) is widely used for transparent electrodes of photovoltaics as a form of indium tin oxide (ITO) due to its superior characteristics of environmental stability, relatively low electrical resistivity and high transparency to visible light. However, In has been worn off in proportion to growth the In related market, and it leads to raise of price. Although In is obtained from ITO target scarps, much harmful elements are used for the recycling process. To decrease of harmful elements, ITO swarf particles obtained from target scraps was characterized whether it is feasible to transparent conductive oxide (TCO). The ITO swarf was crushed with milling process, and it was mixed with new ITO nanoparticles. The mixed particles were well dispersed into ink solvent to make-up an ink, and it was well coated onto glass substrate. After heat-treatment at $400^{\circ}C$ under $N_2$ rich environments, optical transmittance at 550 nm and sheet resistance of the ITO ink coated layer was 71.6% and $524.67{\Omega}/{\square}$, respectively. Therefore, it was concluded that the ITO swarf was feasible to TCO of touch screen panel.

• 한국가구학회지
• /
• 제18권1호
• /
• pp.70-83
• /
• 2007

Rattan furniture is strips of cane around the frame that consists of wisteria, bamboo and wood. The materials are originally from Southeast Asia, and the material of domestic Rattan goods is Korean wisteria. Rattan, which is strong and elastic, is often used for craft materials, and it also retains the original feel of the material with great touch. It is beautiful and suitable for expressing curves. It is shiny, light in weight, easy for cleaning and ventilation. Rattan furniture is unique product made by human hands and nature and is an environment friendly well-being furniture. The use examples of these domestic rattan furnitures is condensed as below. First, the materials of rattan product is wisteria, rice straw, bush clover wood, reed and bamboo. Second, the use of rattan product which is made of domestic wisteria is limited to farming equipments and living wares. Third, the materials of rattan furniture differs in domestic made and foreign made product. As is the characteristics of timbers growing in warmer climates of Korea, it has many twist and strong and it is not straight in length so it is hard to manufacture into and use as furniture also it is hard to acquire right size for the material.

• 로봇학회논문지
• /
• 제8권3호
• /
• pp.156-163
• /
• 2013

This paper describes a flexible visuo-haptic display module. We have developed a flexible electro-active polymer (EAP) actuator and a thin flexible visual display with $3{\times}3$ array configuration via polymer technology. The flexible actuator consists of nine EAP cells vertically moving in response to change in their thickness. The flexible display uses polymer based optical waveguide allowing light to scatter only at specific area. The display film is transparent and identically designed to the array pattern to fit for the arrangement of actuator cells. A pressure sensor is installed under the integrated module. The performance of the actuator is proved to be sufficient for satisfying perceivable range of human touch sense. The integrated system can provide interactive haptic feedback such as key pressing, contact vibration sensations, and etc. in accordance with user input.