• Journal of Electrical Engineering and Technology
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• 제9권6호
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• pp.2013-2018
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• 2014

According to the manufacturing process of the laminated stator core for an inserted permanent magnet synchronous motor (IPMSM), the iron loss may be different. It is because the mechanical stress imposed to electrical steel sheet is strongly dependent on the manufacturing process. This paper proposes a new iron loss measurement algorithm which utilizes the induced voltage of a search coil and exciting current. The method is effective even when the distribution of magnetic flux density is not uniform along the magnetic flux path as well as uniform. The developed iron loss measurement system is applied to bonded- and embossed-type segmented stator cores of an IPMSM, and the iron losses are quantitatively compared.

• Macromolecular Research
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• 제12권5호
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• pp.474-477
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• 2004

We present simple, low-cost methods for the fabrication of polymeric waveguides that have large core sizes for use as optical interconnects. We have used both hot embossing and micro-contact printing techniques for the fabrication of multimode waveguides using the same materials. Rectangular and large-core (60${\times}$60 $\mu\textrm{m}$$^2$) channels were readily prepared when using these methods. The dimensions of the embossed and printed channels were the same as those of the pattern on the original master. The polymeric waveguides that we fabricated with large core sizes exhibited a low propagation loss of 0.1 dB/cm at 850 nm, which indicates that hot embossing and micro-contact printing are suitable techniques for the fabrication of optical waveguides having large-core.

• 동력기계공학회지
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• 제12권4호
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• pp.46-51
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• 2008

Honeycomb panel has a constructive advantage because it is constructed with a honeycomb core, so it has relatively higher strength ratio to weight. Therefore honeycomb panel has been used as the light weight panels in the high-speed railway technology and high-speed ship like as cruise yachts. Also it has been used in the aircraft and aerospace industry as a structural panel because light weight structure is indispensible in that field of industry. Recently, the honeycomb panel is embossed in the viewpoints of high oil prices as the lightweight panel of the transport machine, however the sound insulation capacity of the honeycomb panel is poorer than those of uniform and another sandwich panels. In this paper a method to improving the sound absorption coefficient of a honeycomb panel Is studied by using the Helmholtz resonator. The sound absorption coefficients for some kinds of honeycomb cores are demonstrated by the normal incident absorption coefficient method.

• 품질경영학회지
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• 제36권3호
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• pp.55-65
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• 2008

From fast service enlargement of the latest economy and industry, importance of service industry is embossed gradually. Service enterprise is pushing on in service quality elevation for strengthening competitiveness to survive on globalization society as manufacturing industry. Service quality elevation adapts as core competitive strategy in enterprise with business environment as continuous competitive advantage. Because Public organization also is developed in service fast, Public organization is trying to offer various service such as service level of enterprise. Each Public organization are trying to satisfy request of citizens as Customer. In this study, presented Kano-Servqual Method which is mixed by Kano's and Servqual model's advantage, each Method had used much in service quality measurement separately. Kano-Servqual Method is applied to the A information library as a public organization and is proved as practical useful method.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2001년도 봄 학술발표회 논문집
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• pp.563-570
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• 2001

In this study, the charactersistics of horizontal drains used to stabilize the dredged fill are investigated experimentally by doing tensile strength test, discharge capacity test, and filter clogging test. The types of the drains selected for the study are filament type (Tyre-E), embossed type(Type-P) and heat bonded cubic type with the thickness 10mm(Type-010) and 5mm(Type-05). The results of tensile strength and discharge capacity test show that the performance of drain Type-O10 was better than the other drains. This is caused by the fact that the lattice shape core of drain Type-O10 has strong rigidity and minimizes the loss of the sectional area of discharge with increased confining pressure. Analyzing the compatibility of filters by the results of the strength characteristics test and clogging test, the filter of filament type drain produced with polyester clothed polyamide performed well.

• 보존과학회지
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• 제30권1호
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• pp.81-93
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• 2014

철원 도피안사 철조비로자나불좌상, 동해 삼화사 철조노사나불좌상, 평택 만기사 철조여래좌상은 통일신라에서 고려시대에 조성된 철불로서 균열, 탈락, 박리박락, 각종 오염물 등이 발생하였다. 방사선 투과촬영을 활용한 철불의 손상도 평가 결과, 철불 내부에서는 균열, 이격, 탈락, 주물공, 보수물질 등이 확인되었다. 그러나 철의 강도로 보아 외부로부터 큰 충격이 가해지지 않는 이상 현재의 상태를 유지할 수 있을 것으로 보인다. 철불의 제작에는 내형과 외형을 철심과 못을 사용하여 고정하였으며, 표면의 이음선과 양각된 명문, 따로 주조되어 결합된 손으로 보아 초중자주조법으로 조성되었을 것으로 판단된다.

• 감성과학
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• 제8권3호
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• pp.231-240
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• 2005

여성의 사회적 참여와 경제적 지위가 높아지면서 소비 주체이자 유행을 선도하는 트렌드 창조자로서 '여성'이 부상하고 있다. 즉, 이제는 '여성'을 제품개발의 한 축으로 인식하고, 여성적 감성을 담아 낼 수 있는 제품 개발과 전략이 필요한 시점이다. 본 연구에서는 최근 디지털 제품을 중심으로 부각되고 있는 '여성성'을 사회$\cdot$문화적$\cdot$경제$\cdot$마케팅적 측면에서 그 배경을 살펴보고, 개발사례를 중심으로 여성적 디자인의 특징을 분석하였다. 또한 실제 제품개발과 연계하여 여성소비자의 소비성향 및 라이프스타일, 선호 제품스타일 등을 분석하였으며, 이를 반영하여 여성층을 겨냥한 감성오디오를 개발하였다. 궁극적으로 여성 지향적 제품개발의 필요성을 제기하고, 여성적 감성을 반영하기 위한 제품디자인 방향에 대하여 연구하였다.