• Korean Institute of Interior Design Journal
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• v.19 no.1
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• pp.100-111
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• 2010

All of us have no time to predict and prepare for a rapidly-approaching future change in the 21st century, thereby being reality that we feel uneasy about future society. Accordingly, there is necessity for re-consolidating environment and daily culture in preparation for future society, namely, aging society. Given well preparing for super-aging society that will approach in the future, by which this effort becomes what bad luck often brings good luck, our country's role is thought to get probably bigger even in the globally silver industrial market in near future. We need to synthetically recognize a human being's aging psychological and physical conditions through the aging experience exhibition available for publicizing properly this historical phenomenon, and to pay more attention to importance of interaction between a human being and product environment. The experience exhibition is a concept for the exhibition form and the spatial composition, which emphasized interaction, with having escaped from the simply exhibition space. Given trying to communicate information more scientifically with escaping from the conventional exhibition of seeing and listening, it is also important to research Into the basis for exhibition as the experience space based on interaction. After all, a human being's aging is the unavoidably future phenomenon. And, importance of environment, which influences a human being, is very mutual as well. Our country is desired to develop a research on interaction of the exhibition experience space available for broadening recognition of senior-friendly and for properly experiencing this, thereby being an opportunity that the business entity, which plans silver industry, and the academic circles, which research and develop this, do mutually cooperate and can make silver industry grow further.

• Journal of the Korean Home Economics Association
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• v.43 no.10 s.212
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• pp.115-124
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• 2005

The purposes of this study were, 1) to examine the conceptual structure of shopping value and service quality as perceived by women in their 50's and 60's, and 2) to investigate the effects of shopping value and service quality on consumer satisfaction of these women. The results mal provide insights related to the silver market in South Korea. Data were obtained for 286 women in their 50's and 60's living in metropolitan areas in South Korea, and analyzed using factor analysis, Cronbach's alpha, and regression. The results showed that service quality was composed of Facilities Service, Product Service, Salespersons' Service and Policy Service. Shopping values perceived by elderly consumers consisted of two factors: Hedonic Shopping Value, and Utility Shopping Value. Elderly consumers perceived Hedonic Value by Salespersons' Service and Utility Value by Policy Service. Salespersons' Service of a store was the most important variable for elderly consumers' satisfaction. The finding suggest that a store's Salespersons' Service is important in predicting elderlv corlsumers' purchase behavior, and they give insight into the development of strategies to be utilized in promotion planning. Implications and drawn for the information useful to consumer behavior researchers and retailers of the silver market.

• Journal of the Korean Graphic Arts Communication Society
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• v.16 no.1
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• pp.55-67
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• 1998

The developing agent is the materials which first acts on silver grain and make it into metallic silver by reducing reaction. There are several types in developing agents, and according to Lumiere-Andresen principle, substitution product which has amino or hydroxyl group in benzen nucleus has a developing power, but all reducing substances are not in used .In the developing effect, not only the role of developing agent but also that of assistant materials are important. But In this work, we have studied effect, change by lith developing agent which require high contrast image. We made an developing experiment after having manufactured developing solution used hydroquinone and another developing agents like chlorohydroquinone, pyrocatcchol and pyrogallol as developing agent. And we added that did in addition of diethanolamine and ascorbic acid. and then we examined the possibility of use.

• Korean Journal of Crystallography
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• v.11 no.1
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• pp.28-33
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• 2000

The slow of 2,3-bis(2-pyridyl)pyarzine(bpp) with Ag(CF₃CO₂) produces crystalline product suitable for X-ray crystallography. Crystallographic characterization of the crystal (C/sub 32/H/sub 20/-F/sub 6/N/sub 8/O₄Ag₂: triclinic P1, a=8.518(5)Å, b=9.546(2)Å, c=10.632(1)Å, α=81.11(1)°, β=87.61(3)°, γ=75.66(3)°, V=827.5(5)ų, Z=1, R=0.0431) has provided that the complex is a cyclic dimer [Ag(bpp)(CF₃CO₂)]₂. Each bpp ligand connects two tetrahedral silver(I) ions in a tridentate mode (Ag-N, 2.26()-2.43(2)Å), and the trifluoroacetato anion is bonded to each silver(I) atom in a monodentate fashion (Ag-O, 2.38(1); 2.39(2) Å). The skeletal cyclic dimer is stable up to 212℃, and drastically decomposes around this temperature.

• Korean Journal of Materials Research
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• v.19 no.3
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• pp.169-173
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• 2009

In chemistry, the study of sonochemistry is concerned with understanding the effect of sonic waves and wave properties on chemical systems. In the area of chemical kinetics, it has been observed that ultrasound can greatly enhance chemical reactivity in a number of systems by as much as a million-fold. Nano-technology is a super microscopic technology in which structures of 100 nanometers or smaller can be investigated. This technology has been used to develop $TiO_2$ materials and $TiO_2$ devices of that size. Thus far, electrochemistry methods and photochemistry methods have generally been used to create $TiO_2$ nano-size particles. However, these methods are complicated and create pollutants as a by-product. In the present study, nano-scale silver particles (5 nm) were prepared in a sonochemistry method. Sonochemistry deals with mechanical energy that is provided by the collapse of cavitation bubbles that form in solutions during exposure to ultrasound. $TiO_2$ powders 25 nm in size doped with Ag were formed using an ultrasonic sound technique. The experimental results showed the high possibility of removing pollution through the action of a photocatalyst. This powder synthesis technique can be considered as an environmentally friendly powder-forming processing owing to its energy saving characteristics.

• Journal of Life Science
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• v.28 no.7
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• pp.864-873
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• 2018

There has been increasing attention and research in various nanoparticle applications. Nanoparticles have been used for a variety of purposes in different departments including but not limited to cosmetics, food, machinery, and chemical. A highly sought-after field to use nanoparticles, especially natural or artificial silver nanoparticles (SNPs), is the utilization of their significant antimicrobial properties in daily items such as fabrics, indoor air filters, and, water filtration units where abundant bacterial and fungal growth are inevitable. These applications of SNPs, however, have enabled continuous human exposure and hence paved the way for potential SNP toxicity depending on exposure method and particle size. This potential toxicity has led to researches on safer antimicrobial solutions to be utilized in textile and filtration. In this context, products of natural origin have gained expanding interest due to their eco-friendly, cost-effective, and biologically safe properties along their promising antibacterial and antifungal activities. Natural product-applied fabrics and filters have been shown to be comparable to those that are SNP-treated in terms of ease production, material durability, and antimicrobial efficiency. This article summarizes and assesses the current state of in vitro and in vitro toxicity of SNPs and discusses the potential of natural products as an alternative.

• Proceedings of the Korean Vacuum Society Conference
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• 2016.02a
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• pp.268-268
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• 2016

Chemical sensors have attracted much attention due to their various applications such as agriculture product, cosmetic and pharmaceutical components and clinical control. A conventional chemical and biological sensor is consists of fluorescent dye, optical light sources, and photodetector to quantify the extent of concentration. Such complicated system leads to rising cost and slow response time. Until now, the most contemporary thin film transistors (TFTs) are used in the field of flat panel display technology for switching device. Some papers have reported that an interesting alternative to flat panel display technology is chemical sensor technology. Recent advances in chemical detection study for using TFTs, benefits from overwhelming progress made in organic thin film transistors (OTFTs) electronic, have been studied alternative to current optical detection system. However numerous problems still remain especially the long-term stability and lack of reliability. On the other hand, the utilization of metal oxide transistor technology in chemical sensors is substantially promising owing to many advantages such as outstanding electrical performance, flexible device, and transparency. The top-gate structure transistor indicated long-term atmosphere stability and reliability because insulator layer is deposited on the top of semiconductor layer, as an effective mechanical and chemical protection. We report on the fabrication of InGaZnO TFTs with silver nanowire as the top gate electrode for the aim of chemical materials detection by monitoring change of electrical properties. We demonstrated that the improved sensitivity characteristics are related to the employment of a unique combination of nano materials. The silver nanowire top-gate InGaZnO TFTs used in this study features the following advantages: i) high sensitivity, ii) long-term stability in atmosphere and buffer solution iii) no necessary additional electrode and iv) simple fabrication process by spray.

• Journal of the Korean Society of Manufacturing Process Engineers
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• v.15 no.2
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• pp.1-8
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• 2016

Generally, electrical circuits are fabricated as Printed Circuit Boards (PCBs) and mounted on the casing of the product. Additionally, this requires many other parts and some labor for assembly. Recently, molding technology has increasingly been applied to embed simple circuits in plastic casing. The technology is called a Molded Interconnected Device (MID). By using this technology, PCB fabrication can be replaced by molding, and much of the corresponding assembly process for PCBs can be eliminated if the circuit is simple enough for molding. Furthermore, as the improvement of conductive materials and printing technologies of simple electric circuits can be printed directly on the casing part, this also reduces the complexity of the product design and production cost. Therefore, this paper introduces a new MID fabrication process using direct 3D printing technology. Additionally, it is applied to an automotive part of a cruise control switch. The methodology and design are shown.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 2009.11a
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• pp.179-182
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• 2009

본 연구에서는 고령화 시대에 발맞춰 실버산업의 한 분야인 실버용품 디자인 시 계획되어야 할 중요한 요소인 색채에 대해 다루었다. 현재 국내 노인 관련 색채 연구는 미흡한 실정이며 특히 실버용품을 위한 색채 연구는 매우 부족한 실정이다. 따라서 본 연구는 실버용품 사용주체인 국내 60세 이상의 노인을 대상으로 색채연구를 진행함으로써 향후 실버용품 색채 계획에 대한 기초자료로 활용하고자 한다. 본 연구에서는 실제 실버용품의 색상 및 색의 3속성(색상, 명도, 채도)에 대한 노인들의 심리적 선호도를 조사하였다. 본 연구를 통하여 얻은 결론은 남녀 모두 명도가 높은 밝은 색상을 선호하였고, 여성의 경우 무려 89%가 수수한 무채색 보다는 원색인 화려한 색상을 선호하였으며, 남자들 또한 52%가 화려한 색을 선호하였다. 이 결과는 현재 시중에 판매되고 있는 실버용품이 무채색인 흰색, 회색, 검정색이 대부분인 것을 감안하면 실버용품의 색채계획이 노인의 실제 선호색과는 다르다는 것을 보여준다. 본 연구를 통하여 조사된 색채선호도는 향후 실버용품 색채계획 시 주요한 고려사항으로 활용될 수 있을 것으로 기대된다.

• Journal of Korean Society for Quality Management
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• v.33 no.4
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• pp.103-110
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• 2005

Advanced function has been considered to be the most important aspect of the cellular phone. However, leading companies are now implementing the fashion branding strategy which stresses both high technology and appealing design. By means of the conjoint analysis, this research focuses on identifying the preferred design profile related to style of the key cover, color and texture of the case, and presence or absence of the noctilucent material coated on the part of surface. We also evaluate the relative importance of factors to determine the design concept of new cellular phone. Results indicate that consumers most prefer the silver-colored, sliding key cover phone with soft and noctilucent surface.