본 연구에서는 세계경제에서 비중이 커지고 있는 중국주식시장과 한국주식시장간의 정보 이전효과에 대하여 분석하기 위하여 한국과 상해A주 및 상해B주, 한국과 심천A주 및 심천B주의 수익률의 이전효과와 변동성의 이전효과를 검증하기 위하여 EGARCH모형을 사용하였다. 실증분석 결과를 요약하면 다음과 같다. 먼저 수익률의 이전효과는 심천B주 시장에서 한국주식시장으로의 이전효과만 존재하였고, 다른 시장 간에는 수익률의 이전효과는 존재하지 않는 것으로 나타났다. 둘째, 변동성의 이전효과를 보면 중국A주 시장에서 한국주식시장으로의 이전효과가 나타났으나 레버리지 효과는 없는 것으로 나타났다. 또 한국주식시장에서 중국B주 시장으로의 변동성 이전효과는 존재하며, 레버리지 효과 역시 존재하는 것으로 나타났다. 끝으로 심천B주 시장이 한국시장과 비교적 정보이전효과에 있어 영향력은 작지만 상호 영향력을 끼치고 있는 것으로 나타났다.

The nanostructured cerium oxide powders were synthesized by spray thermal decomposition process for the use as the raw materials of resistive oxygen sensor. The synthesis routes consisted of 1) spray drying of water based organic solution made from cerium nitrate hydrate () and 2) heat treatment of spray dried precursor powders at in air atmosphere to remove the volatile components and identically to oxidize the cerium component. The produced powders have shown the loose structure agglomerated with extremely fine cerium oxide particles with about 15 nm and very high specific surface area (). The oxygen sensitivity, n ( and the response time, measured at in the sample sintered at , were about 0.25 and 3 seconds, respectively, which had much higher performances than those known in micron or sized sensors.

A new binder system and debinding process for low carbon residue in the injection molding of Nd(Fe, Co)B powder are investigated. In the injection molding of magnetic materials, it is demanded to reduce carbon residue which deteriorates their magnetic properties. The binder system developed is composed of polyethylene glycols (PEGs) and polypropylene (PP). PEG was selected as a major binder is component to be extracted in a molecular state by solvent extraction in ethanol, which step would leave no residue. PP was selected as a minor binder component to be subsequently removed by thermolysis which step would leave carbon residue. The behaviors of solvent extraction with the variations of PEG molecular weight, temperature, and time were examined. The dependency of residual carbon content on thermolysis atmosphere was also studied. Opened pore channels introduced in a green body by the solvent extraction and microstructures of the sintered magnets were observed using SEM.