Wide-area surface decontamination is essential during the sudden release of radioisotopes to the public, such as nuclear accidents or terrorist attacks. A spray coating composed of a reversible complex between poly (vinyl alcohol) (PVA) and phenylboronic acid-grafted poly (methyl vinyl ether-alt-mono-sodium maleate) (PBA–g–PMVE–SM) was developed to remove radioactive cesium from surfaces. The simultaneous spay of PVA and PBA–g–PMVE–SM aqueous polymer solutions containing Cs adsorbent to contaminated surfaces resulted in the spontaneous formation of a PBA–diol ester bond-based gel-like coating. The Cs adsorbent suspended in the gel-like coating selectively removed Cs-137 from the Cs-contaminated surface. The used gel-like coating were removed from surfaces by simple water rinsing. This recovery way has advantages compared with costly incineration to remove the organic materials for final disposal/storage of the radioactive waste. Thus, our spray coating is suitable for practical wide-area surface decontamination. In radioactive tests, the hydrogel containing Cs-adsorbent showed substantial Cs-137 removal efficiencies of 96.996% for painted cement and 63.404% for cement, which are 2.33 times better than the values for the commercial surface decontamination coating agent DeconGel.

본 연구는 글로벌금융위기와 유럽재정위기에 따라 PIIGS 국가들의 국채스프레드에 미치는 영향과 신흥시장 국 가의 거시경제지표가 국채수익률에 미치는 영향을 분석하였다. 또한 한국의 국채시장에 대한 외국인투자자의 국 적별 채권투자 행태를 결정하는 요인을 분석하고, 외국인투자가 국내 국채시장에 어떠한 영향을 미치는지를 분석 하였다. 주요 연구 결과는 다음과 같다. 첫째, 유럽재정위기와 관련된 구제금융 지원관련 부정적인 뉴스는 독일 국채수익률 대비 PIIGS 국가들의 국채스프레드를 상승시켰다. 또한 금융취약성의 증가, 글로벌위험도 스프레드 를 상승시켰다. 둘째, PIIGS 국가와 신흥시장 국가의 거시경제지표, 특히 GDP 대비 정부부채 비율의 상승 또는 재정수지의 악화는 국채수익률의 상승을 가져왔다. 또한 미국 국채수익률의 상승에 따른 유동성위험 전이효과와, 순수기대가설 내지 인플레위험의 국채수익률 반영 현상도 나타났다. 셋째, 한국 국채에 투자한 외국인의 국적별 로 미국 투자자는 차익거래 유인과 국채의 유동성위험을 중시하는 반면, 유로존과 중국 투자자는 한국의 국가신 용위험을 중시하는 것으로 나타났다. 넷째, 외국인투자자의 단기 채권 순매수의 경우에만 국내외 이자율 차이와 유의한 양(+)의 관계를 나타내서, 국내 채권수익률의 상대적인 상승 내지 가격 하락이 외국인 매수를 가져오는 것으로 보인다. 다섯째, 미국 및 유로존 투자자의 국채 순매수 증가는 국채수익률의 유의한 하락을 가져왔다. 여 섯째, 외국인투자자의 만기별 순매수 변화는 단기 국채 순매수의 경우에만 유의하게 단기, 중기, 장기 등 모든 만 기의 국채수익률 변화와 유의한 음(-)의 관계가 나타났다.

To observe the formation of defects at the interface between an oxide semiconductor and SiO2, ZnO was preparedon SiO2 with various oxygen gas flow rates by RF magnetron sputtering deposition. The crystallinity of ZnO depends on thecharacteristic of the surface of the substrate. The crystallinity of ZnO on a Si wafer increased due to the activation of ionicinteractions after an annealing process, whereas that of ZnO on SiO2 changed due to the various types of defects which hadformed as a result of the deposition conditions and the annealing process. To observe the chemical shift to understand of defectdeformations at the interface between the ZnO and SiO2, the O 1s electron spectra were convoluted into three sub-peaks bya Gaussian fitting. The O 1s electron spectra consisted of three peaks as metal oxygen (at 530.5eV), O2− ions in an oxygen-deficient region (at 531.66eV) and OH bonding (at 532.5eV). In view of the crystallinity from the peak (103) in the XRDpattern, the metal oxygen increased with a decrease in the crystallinity. However, the low FWHM (full width at half maximum)at the (103) plane caused by the high crystallinity depended on the increment of the oxygen vacancies at 531.66eV due tothe generation of O2− ions in the oxygen-deficient region formed by thermal activation energy.

3-D IC integration enables the smallest form factor and highest performance due to the shortest and most plentiful interconnects between chips. Direct metal bonding has several advantages over the solder-based bonding, including lower electrical resistivity, better electromigration resistance and more reduced interconnect RC delay, while high process temperature is one of the major bottlenecks of metal direct bonding because it can negatively influence device reliability and manufacturing yield. We performed quantitative analyses of the interfacial properties of Al-Al bonds with varying process parameters, bonding temperature, bonding time, and bonding environment. A 4-point bending method was used to measure the interfacial adhesion energy. The quantitative interfacial adhesion energy measured by a 4-point bending test shows 1.33, 2.25, and 6.44 J/m2 for 400, 450, and 500˚C, respectively, in a N2 atmosphere. Increasing the bonding time from 1 to 4 hrs enhanced the interfacial fracture toughness while the effects of forming gas were negligible, which were correlated to the bonding interface analysis results. XPS depth analysis results on the delaminated interfaces showed that the relative area fraction of aluminum oxide to the pure aluminum phase near the bonding surfaces match well the variations of interfacial adhesion energies with bonding process conditions.

1992년∼1996년 10월까지의 연구기간 동안 한국기업이 발행한 CB의 원주수익률은 대체로 (-)를 나타내어 한국시장 전체의 수익률이 (+)를 보인 것과는 대조를 보이며, 변동성은 한국시장 전체의 변동성보다 높게 나타났다. CB수익률도 원주수익률보다 더 낮은 (-)의 수익률을 보여서 세계 · 유럽의 주식 ·채권시장이 모두 (+)의 수익률을 보인 것과는 대조를 이루었다. CB의 변동성도 세계· 유럽시장의 변동성보다 상당히 높게 나타났다. CB의 발행수익률은 사후적으로 환율변화에 따라 원화가치가 하락하면 엄청나게 증가할 수 있으며, 반대로 원화가치가 상승하면 (-)가 될 수도 있어서 향후 한국기업들이 해외에서 차입을 하고자 할 경우에는 환율 예측이 필수적인 것으로 나타난다. 발행프리미엄과 발행기업의 재무회계적 변수들간에는 유의한 관계가 나타나지 않았다. 원주수익률간, CB수익률간 상관관계는 대체로 유의한 (+)의 상관관계를 보였으며, CB 수익률은 원주수익률과 유의한 (+) 관계를 보였고 CB 가격움직임의 약 20%를 원주의 움직임이 설명하였다. 원주수익률은 국내주식시장, 세계주식시장 순에 의해 설명되었다. CB 수익률에 대해서도 역시 국내주식시장 요인이 가장 중요한 설명력을 보였지만 그 설명력은 원주수익률에 비해 현저히 낮았고, 나머지 시장 요인들은 설명력이 없었다. 글로벌화가 진전된 산업일수록 세계산업 요인이 원주수익률에 대해 상대적으로 중요한 요인으로 나타났으며. 글로벌화가 진전되지 않은 산업의 경우에는 국내산업 요인이 중요하게 작용하였다. CB수익률에 대해서는 다소 상반되는 결과가 나타났다.

Recently, brick walls are being widely introduced in rural areas. Walls are a very important design element of space. However, most brick wall works do not consider the human psychological characteristics. The purpose of this study was to investigate psychological characteristics on brick wall bonds such as the stack bond, running bond, english bond, flemish bond, america bond. The results of the research can be summarized as follows: 1)There is no statistical difference of psychological evaluation results among student groups using the semantic differential scale method using 10 adjectives. 2)Stack bonds have an uninspiring, artificial, simple, restful, boring and ordered psychological characteristic. Running bonds have an uninspiring, restful and ordered psychological characteristic. America bonds have a unique and modernistic psychological characteristic. English bonds have a unique, modernistic, complex and chaotic psychological characteristic. Flemish bonds have no critical psychological characteristics. 3)The running bond earned the highest score in preference, while the stack bond scored the lowest. Employment of brick wall bonds on this study was not highly preferred, hence it is necessary to develop a new brick wall bond design. 4)In conclusion, the proper selection of brick wall bonds is very important and we should consider human psychological characteristics in the design of rural areas.

The purpose of this paper is to discuss the criminal responsibility of issuing of cheap convertible bonds using the case of Samsung Everland which Samsung Everland issued convertible bonds for dirt cheap in a scheme to have chairman Lee Kun-hee’s son inherit control of the Samsung group. According to the final decision of Supreme Court, Korea, the case was received the verdict of not guilty. As following the Supreme Court ruling, the interpretation restricted the concept of an act in violation of one's duty to a certain behavior having a potential risk of damage. However, the final decision has some doubtable factors to question its adequateness. Defining the duty violation using the factor of potential damage ignored the other factors such as justness(legitimacy) of purpose, due process, rationality of means. Additionally, it seems that the logical background of the final decision disbanded all factors equivalently without any weights on the certain behavior. That is, as excluding the factor of loss, it is clear that the accused issued the unfair convertible bond with wrongful purpose against due process. Therefore, it is clear to assert a possibility of breach of duty. On this paper I am going to go through the overall a jump in the logic for the decision of Supreme Court on criminal responsibility of issuing of cheap convertible bonds of Samsung Everland, and discuss the need of reconsideration of the case.