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최영재(Y. J. Choi),신정훈(J. H. Shin),홍원표(W. P. Hong),이석우(S. W. Lee),최헌종(H. Z. Choi) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.5
Dynamically changing customer demands request manufacturers to make quality products with cheaper prices and shorter delivery. To survive in the global market, the manufacturing industry of today needs to be equipped with advanced technologies including IT as well as substantial infrastructure. Under this situation, we found that collaboration is the right answer for manufacturers to survive by strengthening relations between companies instead of competing against each other. For facilitating collaboration among Korean SMEs, we performed i-Manufacturing project from 2005. Through this project, we applied IT into the conventional manufacturing industry by developing business models and collaboration systems. In this paper, we introduce collaborative production management model and system including shop floor control.
Direct observation of magnetodielectric effect in type-I multiferroic PbFe0.5Ti0.25W0.25O3
J.Y. Moon,M.K. Kim,H.Y. Choi,S.H. Oh,Y. Jo,이나라,최영재 한국물리학회 2015 Current Applied Physics Vol.15 No.11
In type-I multiferroics, where ferroelectricity and magnetism arise from different origins, the explicit measurement of magnetoelectric effect is commonly prohibited due to the weak magnetoelectric coupling. From our investigation of magnetic and dielectric properties in a perovskite PbFe0.5- Ti0.25W0.25O3, we have directly demonstrated magnetic-field-driven change of dielectric constant in a highly non-linear fashion. Our result offers a potential utilization of magnetoelectric functionality in type-I multiferroics.