• 한국가구학회지
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• 제22권1호
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• pp.72-81
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• 2011

These days, beds have been developed not as furniture to sleep in but Healthcare Furniture. The function of heating, non-electronic-waves and far-infrared rays have been added. Also, eco-friendly materials such as stone, mud, rubber and wood are combined to them together with the radiation-heating method using heat conduction through electronic coil and hot water circulation. Modern people suffer from stress and fatigue. The hot issue is "health." Focused on the health, the development of design for beds considering the influence electronic waves, anions, deep sleep and the density of toxic materials have on human bodies has become urgent. In this study, the trend, specification and efficiency of the functional health-related electronic coil technology are analyzed. Through the analysis, the environmental standards are set. According to them, technology, eco-friendly materials and additional functions for the development of the design are considered. Also, the government is promoting the IEC international standardization for the Korean traditional floor heating style beds. In preparation for that, we adopted new HPT method technology. It enables non-electronic-waves, low electricity and stable temperature maintenance control for the warm top and the cool bottom. Also, the head boards and the frames of the beds can be separated. Through this separation, the beds can be easily moved or installed. Eco-friendly materials such as Hinoki cypress wood and red clay and the existing tables function are combined to the head boards so they can be used as drawers and display shelves. If they are used as separate items, they can be used as covers. This is how we suggest the design for the heating beds.

• 한국과학교육학회지
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• 제33권7호
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• pp.1312-1328
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• 2013

이 연구에서는 사례연구를 통해 중등 예비과학교사의 교육과정 설계에서 교육과정 자료의 활용 방식을 조사하였다. 서울 소재 사범대학에 재학 중인 두 명의 예비과학교사가 연구에 참여하였다. 교수학습관에 대한 사전면담을 실시한 후, 교육실습 기간 동안 이루어진 각 예비교사의 수업을 관찰하였고, 모든 교수학습자료를 수집하였으며, 수업 실행 전후에 반구조화된 면담을 진행하였다. 예비교사들의 교육과정 자료의 활용 방식을 읽기, 평가, 응용의 측면에서 체계적으로 분석한 결과, 두 예비교사의 교육과정 설계에서 교육과정 자료의 활용 방식에 상당한 차이가 있었다. 교육과정 자료에 대한 읽기의 방식에 차이가 있었는데, 이는 두 예비교사의 교육과정 재구성에 대한 관점의 차이로부터 비롯되었다. 교육과정 재구성에 대한 관점의 차이는 교육과정 자료의 응용 방식에도 영향을 미쳐서 교육과정 재구성에 대해 적극적인 관점을 지닌 경우 '구성요소 추가'가, 소극적인 관점을 지닌 경우 '구성요소 변형'이 중요한 응용 방식이었다. 또한, 예비교사의 교수학습관에 따라 교육과정 자료를 평가하는 과정에서 학습자를 고려하는 수준에 차이가 있었다. 평가에서의 이러한 차이는 '교사중심활동의 증가'와 '학생중심활동의 증가' 응용에서의 질적인 차이로 연결되었다. 이에 대한 교육적 함의를 논의하였다.

• 한국의상디자인학회지
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• 제6권1호
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• pp.25-33
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• 2004

This study is aimed at reviewing how the Orientalism trend is expressed in the modem fashion in terms of silhouette, color, materials, and detail. To this end, the geographic scope of this study is limited to China, Japan, Korea, while data are collected from fashion collections, domestic and foreign magazines since 2000's, literature, and internet sites. The results of this study can be summarized as follows: 1. Silhouette: the basic square silhouette of the Oriental traditional costume do not disturb the body movement and have an effected on design to smoothly follow the body line rather than cutting out materials into several parts or emphasize the curved body. 2. Color: due to the influence of the Oriental Zen thought, color trend seems to pursue simplicity rather than complexity, and natural aesthetics. In addition, the Oriental colorfulness shall not be ignored. 3. Materials: golden embroidered material, polished satin, jersey, tough or rough materials, etc. have used with materials of the Oriental traditional costume came into fashion. In pattern, the Orientalism trend is expressive of pattern by Chinese ink-spread technique, simple brush touch technique, cloud pattern, lotus flower pattern or dragon pattern, all of which feature the Oriental calm aesthetics or those motivated by the Oriental traditional patterns. 4. Detail: the techniques of handicrafts and manual arts such as meticulous embroidery, tassel or patchwork reflect well the Orientalism trend in the modem fashion.

• 한국의상디자인학회지
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• 제16권1호
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• pp.139-151
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• 2014

Storytelling contributes to easy flowing of cultural contents, and cultural original materials offer the creative subjects of cultural content. Now, in Korea, thanks to the Korean wave and etc, new kinds of cultural contents are requested and the demand for the original materials of storytelling has been increasing.A 5,000-year-old history, Korean traditional culture is the storage of the original materials of storytelling that can offer the creativity and the competitiveness, which are able to secure the national competitiveness. Particularly, there are different kinds of cultural archetype materials in the wedding ceremony and wedding costumes. This research, thus, is aimed at providing the subject materials for the cultural content development which are various and interesting by developing the original materials of storytelling on the wedding ceremony and wedding costumes during the Joseon dynasty. In the study for the wedding procedures in the late of Joseon Dynasty, the original sources within wedding ceremony created in the process where wedding customs in Joseon Dynasty and China were compromised are suggested. Further, in the research for the original sources on the wedding costumes associated the wedding ceremony, the original source of storytelling which are showed in a nation and an individual in the process where the wedding ceremony symbolizes the most important marriage one of the fomalities performed in one's life is suggested.

• 복식
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• 제62권3호
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• pp.73-83
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• 2012

The purpose of this study is to contribute in developing guidebooks that can be used in the courses of needlework study by comparing and analyzing the contents and organizations of needlework-related teaching resources available at the present university and fashion-related educational institutions. This research could help us train technical human resources to be highly adaptable in industrial settings. The results of this study showed that the overall organization of contents is mostly divided into such categories as needlework kits, basic hand sewing, seam finishing, partial needlework and decorative needlework. The study results also indicated that such content organization must be considered in basic needlework/sewing processes and that each content needs to provide more various and detailed information by reflecting recent trends in design. Partial needlework has different applications in terms of interlining attachment, subsidiary materials, or sewing techniques; therefore, consistent descriptions and standard guidelines should be given according to what material is used and which design is planned. This study found that most teaching resources covered only needlework or sewing techniques without giving specific descriptions of types of materials, lining and interlining that can have great influence on sewing methods and instructions on how to use the materials. These findings suggest that the teaching resources need to add further technical instructions for the proper use of materials especially in response to the recent release of brand-new materials and sewing machines in the market.

• 한국소음진동공학회논문집
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• 제26권7호
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• pp.806-813
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• 2016

To alleviate the vibration problem or to satisfy the required criteria for manifesting the guaranteed performance of precise equipment, various vibration isolation materials or apparatus, such as viscoelastic material, air and coil spring, have been developed and applied. Among them, a wire mesh material is regarded as one of the good candidate for reducing the vibration in terms of moderate material price, easy shape machining and long life cycle without the property deterioration induced by the aging or environmental effects. In this paper, prior to wire mesh isolator design, the static and dynamic elastic modulus of wire mesh materials are extracted from the experiment by the simple shaped cylindrical specimens and their characteristics for applying to vibration isolator design are examined. The simple shaped specimens were made as considering the design parameters of a wire mesh mount; i.e. the density, wire diameter and wire mesh slope, and the sensitivity analysis were also performed from a view point of the extracted elastic modulus.

• Bulletin of the Korean Chemical Society
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• 제35권8호
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• pp.2477-2480
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• 2014

Thermal degradation of titanium-containing metal-organic frameworks (MOFs; MIL-125 and MIL-125-$NH_2$ at $350^{\circ}C$ for 6 h in air produced $TiO_2$ nanoparticles of ca. 10 nm in diameter. Scanning electron and transmission electron microscope analyses indicated that those nanoparticles were aggregated randomly within each crystalline particle of their MOF precursors. The $TiO_2$ nanoparticles prepared from MIL-125-$NH_2$ exhibited higher activity for the degradation of 4-chlorophenol under visible light.

• 한국초전도ㆍ저온공학회논문지
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• 제20권2호
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• pp.34-39
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• 2018

A cryogenic cooling system is designed for a 154 kV/ 2 kA three-phase hybrid type superconducting fault current limiter (SFCL). The superconducting modules of the SFCL have the operating condition of 71 K at 500 kPa. The total heat load of the SFCL including the cooling system is estimated at 9.6 kW. The cooling system of the closed loop is configured to meet the operating condition, depending on cooling methods of forced flow cooling and re-liquefaction cooling. The cooling system is composed of three cryostats with superconducting modules, cryocoolers, liquid nitrogen circulation pumps, a subcooler and a pressure builder. The basic cooling concept is to circulate liquid nitrogen between three SFCL cryostats and the cryocooler, while maintaining the operating pressure. The design criterion for the cooling system is based on the operation results of the cooling system for a 154 kV/2 kA single-phase hybrid SFCL. The specifications of system components including the piping system are determined according to the design criterion.

• 한국전기전자재료학회논문지
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• 제34권6호
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• pp.393-400
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• 2021

As the recent climate problems are getting worse year after year, the demands for clean energy materials have highly increased in modern society. However, the candidate material classes for clean energy expand rapidly and the outcomes are too complex to be interpreted at laboratory scale (e.g., multicomponent materials). In order to overcome these issues, the first-principles calculations are becoming attractive in the field of material science. The calculations can be performed rapidly using virtual environments without physical limitations in a vast candidate pool, and theory can address the origin of activity through the calculations of electronic structure of materials, even if the structure of material is too complex. Therefore, in terms of the latest trends, we report academic progress related to the first-principles calculations for design of efficient electrocatalysts. The basic background for theory and specific research examples are reported together with the perspective on the design of novel materials using first-principles calculations.

• 센서학회지
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• 제31권5호
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• pp.279-285
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• 2022

Recently, 3D printing technology has gained increased attention in the manufacturing industry because it allows the manufacturing of complex but sophisticated structures as well as moderate production speed. Owing to advantages of 3D printers, such as flexible design, customization, rapid prototyping, and ease of access, can also be advantageous to sensor developments, 3D printing demands have increased in various active device fields, including sensor manufacturing. In particular, 3D printing technology is of significant interest in tactile sensor development where piezoelectric materials are typically embedded to acquire voltage signals from external stimuli. In regard with piezoelectricity, researchers have worked with various piezoelectric materials to achieve high piezoelectric response, but the structural approach is limited because ceramics have been regarded as challenging materials for complex design owing to their limited manufacturing methods. If appropriate piezoelectric materials and approaches to design are used, sensors can be fabricated with the improved piezoelectric response and high sensitivity that cannot be found in common bulk materials. In this study, various 3D printing technologies, material combinations, and applications of various piezoelectric sensors using the 3D printing method are reviewed.