In this study, simple chemical synthesis of green emitting Cd-free InP/ZnS QDs is accomplished by reacting In, P, Zn, and S precursors by one-pot process. The particle size and the optical properties were tailored, by controlling various experimental conditions, including [In]/[MA] (MA: myristic acid) mole ratio, reaction temperature and reaction time. The results of ultraviolet–visible spectroscopy (UV-vis), and of photoluminescence (PL), reveal that the exciton emission of InP was improved by surface coating, with a layer of ZnS. We report the correlation between each experimental condition and the luminescent properties of InP/ZnS core/shell QDs. Transmission electron microscopy (TEM), and X-ray powder diffraction (XRD) techniques were used to characterize the as-synthesized QDs. In contrast to core nanoparticles, InP/ZnS core/shell treated with surface coating shows a clear ultraviolet peak. Besides this work, we need to study what clearly determines the shell kinetic growth mechanism of InP/ZnS core shell QDs.

Columns in existing reinforced concrete structures that are designed and constructed without considering seismic loads generally exhibit widely spaced transverse reinforcements without using seismic hooks. Due to the insufficient reinforcement details in columns compared to the reinforcement requirements specified in modern seismic codes, brittle shear failure is likely to occur. This may lead to sudden collapse of entire structure during earthquakes. Adequate retrofit strategy is required for these columns to avoid such catastrophic event. In order to do so, behavior of columns in existing reinforced concrete structures should be accurately predicted through computational analysis. In this study, an analytical model is proposed for accurately simulating the cyclic behavior of shear critical columns. The parameters for backbone, as well as pinching and cyclic deterioration in strength and stiffness are calibrated using test data of column specimens failed by shear.

We performed this study to understand the effect of a single-crystalline anode on the mechanical properties of asdeposited films during electrochemical deposition. We used a (111) single- crystalline Cu plate as an anode, and Si substrates with Cr/Au conductive seed layers were prepared for the cathode. Electrodeposition was performed with a standard 3-electrode system in copper sulfate electrolyte. Interestingly, the grain boundaries of the as-deposited Cu thin films using single-crystalline Cu anode were not distinct; this is in contrast to the easily recognizable grain boundaries of the Cu thin films that were formed using a poly-crystalline Cu anode. Tensile testing was performed to obtain the mechanical properties of the Cu thin films. Ultimate tensile strength and elongation to failure of the Cu thin films fabricated using the (111) single-crystalline Cu anode were found to have increased by approximately 52 % and 37%, respectively, compared with those values of the Cu thin films fabricated using apoly-crystalline Cu anode. We applied ultrasonic irradiation during electrodeposition to disturb the uniform stream; we then observed no single-crystalline anode effect. Consequently, it is presumed that the single-crystalline Cu anode can induce a directional/uniform stream of ions in the electrolyte that can create films with smeared grain boundaries, which boundaries strongly affect the mechanical properties of the electrodeposited Cu films.

Recrystallization behavior has been investigated for commercial purity AA1050 (99.5wt%Al) and high purity 3N Al (99.9wt% Al). Samples were cold rolled with 90% of thickness reduction and were annealed isothermally at 290, 315, and 350oC for various times until complete recrystallization was achieved. Hardness measurement and Electron Backscatter Diffraction(EBSD) analyses, combined with Grain Orientation Spread(GOS), were employed to investigate the recrystallization behavior. EBSD analysis combined with GOS were distinctly revealed to be a more useful method to determine the recrystallization fraction and to characterize the recrystallization kinetics. As the annealing temperature increased, recrystallization in AA1050 accelerated more than that process did in Al 3N. Both AA1050 and Al 3N showed the same temperature dependence of the n value of the Johnson-Mehl-Avrami-Kolmogorov equation(JMAK equation), i.e., n values increased as annealing temperature increased. Activation energy of recrystallization in AA1050 is about 176 kJ/mol, which is comparable with the activation energy of grain boundary migration in cold-rolled AA1050. This value is somewhat higher than the activation energy of recrystallization in Al 3N.

The purpose of this study was to empirically examine the effects of salespeople's self-determination, shared value; and communication satisfaction on their job satisfaction, organizational commitment, and turnover intention in a fashion company. Questionnaires were administered to 475 salespeople who worked in fashion shop at the time of the study. The data was analyzed via factor analysis, correlation analysis, and a structural equation model. The results indicated that self-determination was extracted as autonomy, competence, and relatedness. Only the relatedness of self-determination factors was positively correlated with formal and informal communication satisfaction. In addition, recognizing hared value was positively correlated with formal and informal communication satisfaction; whereas, the practice of shared value was positively correlated with formal, but not informal communication satisfaction. Formal communication satisfaction was significantly correlated with job satisfaction and organizational commitment. Conversely, informal communication satisfaction was significantly correlated with job satisfaction, but was not related to organizational commitment. Finally, job satisfaction was significantly correlated with organizational commitment and negatively correlated with turnover intention. Moreover, organizational commitment was negatively correlated with turnover intention. The implications of this research for human resources management within fashion companies are discussed in the concluding section of this paper.

The purposes of this study were to investigate the influences of channel assessments on the usage of multi-channels by product types, and the differences in the usage of multi-channels among product types in buying decision making process for fashion products. Data were collected from 510 consumers in their 20s to 50s with purchasing experiences through multi-channel distribution system and living in Seoul and Kyunggi province; 491 were analyzed after deleting incomplete questionnaires. Factor analysis, multiple regression analysis and one-way ANOVA were used for statistical analysis by using SPSS 18.0. The results were as follows: 5 factors were extracted for channel assessment: utility, accuracy, risk, price benefit and sharing information. Price benefits, utility and sharing information for online channel tended to influence positively on the usage of online channel and online+offline channels. Accuracy and low perceived risk of offline influenced positively on offline and on+offline channel usages. The usage levels of on-line and off-line channels for cosmetics were significantly lower than the usage levels for clothes and accessories on information search, evaluation of alternatives, and purchase stages. Significant differences were also found in the usage levels of multi-channels (on+off-line) on information search and evaluation of alternatives stages. The usage levels of the multi-channels for clothes were the highest followed by those of accessories and cosmetics in order.

As information system is getting higher and amount of information assets is increasing, skills of threatening subjects are more advanced, so that it threatens precious information assets of ours. The purpose of this study is to present a strategic direction for the types of companies seeking access to information security. The framework classifies companies into eight types so company can receive help in making decisions for the development of information security strategy depending on the type of company it belongs to. Paired comparison method survey conducted by a group of information security experts to determine the priority and the relative importance of information security management elements. The factors used in the security response strategy are the combination of the information security international certification standard ISO 27001, domestic information protection management system certification K-ISMS, and personal information security management system certification PIMS. Paired comparison method was then used to determine strategy alternative priorities for each type. Paired comparisons were conducted to select the most applicable factors among the 12 strategic factors. Paired comparison method questionnaire was conducted through e-mail and direct questionnaire survey of 18 experts who were engaged in security related tasks such as security control, architect, security consulting. This study is based on the idea that it is important not to use a consistent approach for effective implementation of information security but to change security strategy alternatives according to the type of company. The results of this study are expected to help the decision makers to produce results that will serve as the basis for companies seeking access to information security first or companies seeking to establish new information security strategies.

한국에서 결핵은 소위 후진국 병으로 인식되어 사라진 질병으로 여겨진다. 그러나 한국은 OECD 가입국 중 결핵 발병률 및 사망률이 가장 높은 국가로 결핵은 여전히 사회적 문제이다. 특히 결핵은 사회적 질병으로서 다양한 사회 ․환경적 요인들이 작용하여 나타나는 질병이기에 이에 대한 연구가 필요하다. 하지만 한국의 결핵 관련 연구는 생의학적 결정 요인 연구에 집중되어, 이외에 발병에 영향을 미칠 수 있는 사회 ․환경적 결정요인 연구는 매우 부족한 실정이다. 이는 결핵 발병의 생의학적 결정 요인과 사회 ․환경적 결정 요인을 통합적으로 분석하고 있는 최근의 세계적 연구 흐름과도 동떨어져 있다. 따라서 본 연구는 2015년 국내 결핵 발병률의 공간적 차이를 확인하고, 아이겐벡터 공간필터링 모형을 이용하여 공간적 차이에 기반한 결핵 발병의 사회 ․환경적 결정요인을 분석해 보고자 한다.

목 적: 안경과 콘택트렌즈 구매장소에 따라 안경사의 직무신뢰도 및 안경과 콘택트렌즈 가격의 만족도에 대한 의견 차이가 있는지에 대하여 알아보고자 하였다. 방 법: 2015년 5월에서 6월 두 달 동안 대구·경북, 부산·경남지역의 안경광학과 재학생과 고객을 대상 으로 안경과 콘택트렌즈 구매 장소, 안경사의 판매 및 검안에 대한 신뢰도 및 안경과 콘택트렌즈 구매가격 만족도에 대한 설문을 실시하였다. 결 과: 직무신뢰도에서 검안은 남자의 평균값이 가장 높았고(3.89±0.88), 가격만족도에서는 모두 여자 의 평균값이 높았다(3.18±0.72). 구매장소에 따른 상관관계에서는 비 프랜차이즈의 검안신뢰도가 가장 높 았다(3.99±0.91). 결 론: 구매장소에 따른 직무신뢰도와 가격만족도에 대하여 일부 항목에서 유의한 차이가 나타났고, 이 결과를 바탕으로 직무신뢰도와 가격만족도를 높이는 자료로 이용될 수 있을 것이라고 생각한다.

목 적: Ⅱ-Ⅲ2-Ⅵ4형 반도체 가운데 고용체 화합물에 대한 연구의 하나로 Ⅵ족인 S, Se를 상호 교환하여 성장시킨 ZnAl2Se3.6S0.4 고용체의 구조 및 광 발광 메카니즘을 규명하였고, 이로부터 광학적 energy band gap의 온도의존성과 기초적 열역학 함수를 추정고자 한다. 방 법: ZnAl2Se3.6S0.4 단결정은 수송매체로서 iodine을 이용한 화학수송법(CTR)으로 단결정을 성장시켰 다. 단결정을 성장시키기 위하여 시료 출발측을 950 ℃, 성장측을 850 ℃로 하여 7일간 성장시켰다. 기초 흡 수단 부근에서 에너지 띠 간격의 온도의존성을 구하기 위하여 저온장치가 부착된 UV-VIS-NIR spectrophotometer를 사용하여 광흡수 스펙트럼을 측정하였다. 광발광 특성은 광흡수 특성 측정에 사용하 였던 측정용 시편을 cryogenic system 의 cold finger 에 부착시키고, 여기 광원으로 325 ㎚의 He-Cd laser 를 사용하였으며, double-grating monochromator, data-mate control system, cryogenic system, PM tube 등으로 구성된 측정 system을 사용하여 측정하였다. 결과 및 고찰: ZnAl2Se3.6S0.4 단결정의 에너지 띠 간격과 온도의존성을 구하기 위하여 이들 단결정의 기 초 흡수단 영역인 320 ～ 420㎚ 파장영역과 13K ～ 289K 온도영역에서 광흡수 스펙트럼을 측정하였다. Varshni가 제안한 에너지 띠 간격의 온도의존성 특성에 대한 실험식에 잘 일치하였다. 측정된 energy gap(Eg)으로부터 열역학적 함수 물리량을 추정할 수 있었다. 또한 13K에서 측정한 광발광 스펙트럼에서 보 면 427㎚(2.904 )영역에서 비교적 넓고 세기가 강한 청색 발광 피크와 468㎚(2.648 )영역에서 세기가 약한 청색 발광 피크를 관측할 수 있었다. 결 론: ZnAl2Se3.6S0.4 단결정의 결정구조는 defect chacopyrite 구조였으며, 격자 상수는 a= 5.5563Å, c= 10.8324Å이었다. 또한 찌그러짐 인자값은 0.0504 이었다. 광학적 에너지 띠 간격의 온도 의존성을 규명하 였고, 이 때 Eg(0)=3.538(eV), α=2.02×10-3(eV/K), β=502.19(K)로 주어졌다. Energy band gap의 온도의 존성으로부터 entropy(SCV), heat capacity(CCV), enthalpy(HCV) 값을 추정 할 수 있었다. ZnAl2Se3.6S0.4 결 정의 광발광 특성은 비교적 넓고 세기가 강한 청색 발광 피크와 세기가 약한 청색 발광 피크를 관측할 수 있었 다. 이들 발광 전이기구는 두개의 주개 준위(SD1, DD1)와 한 개의 받개 준위(DA1)사이의 재결합에 의한 발광 메카니즘으로 설명된다.

This paper is a study on the nonlinear behavior of polyhedron curved space roof as building structures of quasicrystal system. The quasicrystal is made up of two kinds of parallel hexahedrons, and all the line elements of the parallelepiped have the same length. The quasicrystal design grid dome has a pentagonal symmetry and all members have the same length. This paper described form of design gird dome, and showed the analysis conditions. Also, The displacement-load curve is shown through the analysis and we grasped the flow of the load and forces through analysis of design grid dome applied quasicrystal system.

This paper is a study on Development of polyhedral surfaces Quasicrystal System. Quasicrystal is the quasi-crystalline material, which is the intermediate material of the crystalline material and non-crystalline material. Quasicrystal is a structures that is ordered but not periodic, the basic form is a rhombus. These studies in the field of chemistry will proceed actively studied, in the field of construction a situation that still insufficient research. Therefore, in this paper, we presents the analysis of Quasicrystal system, and the research on the applicability of as dome structures. This paper described some examples of polyhedron form, and method of applying Quasicrystal system.

The recent development of electro-optic devices and anticorrosion media has led to the necessity to investigate infrared optical systems with solid-solid interfaces of materials that often have the characteristic of amorphousness. One of the most promising classes of materials for those purposes seems to be the chalcogenide glasses. Chalcogenide glasses, based on the Ge-Sb-Se system, have drawn a great deal of attention because of their use in preparing optical lenses and transparent fibers in the range of 3~12 um. In this study, amorphous Ge-Sb-Se chalcogenide for application in an infrared optical product design and manufacture was prepared by a standard melt-quenching technique. The results of the structural, optical and surface roughness analysis of high purity Ge-Sb-Se chalcogenide glasses are reported after various annealing processes.

In this study, recrystallization behaviors in the two-phase (α+γ) region of micro-alloyed steels such as Base, Nb, TiNbV and CAlN were investigated in terms of flow stress, microstructure and associated grain boundary characteristics. The flow stress of all specimens reached peak stress and gradually decreased, which means that recrystallization or recovery of proeutectoid deformed ferrite and recovery or transformation to ferrite of deformed austenite occurred by thermal activation. The precipitation of carbide or nitride via the addition of micro-alloying elements, because it reduced prior austenite grain size upon austenitization, promoted transformation of austenite to ferrite and increased flow stress. The strain-induced precipitation under deformation in the two-phase region, on the other hand, increased the flow stress when the micro-alloying elements were dissolved during austenitization. The recrystallization of the Nb specimen was more effectively retarded than that of the TiNbV specimen during deformation in the two-phase region.

운송물을 선하증권과 상환하지 않고 선하증권의 정당한 소지인이 아닌 타인 에게 인도한 경우 선박소유자 등이 책임제한을 할 수 있는지 여부에 대해서는, 국내외의 견해가 일치하지 않는다. 영국의 경우, 선박소유자 등의 책임제한 내 지 면책의 허용 여부는 계약해석의 문제로서, 계약자유의 원칙상 계약당사자는 책임제한 내지 면책을 원칙적으로 자유로이 규정할 수 있다고 본다. 다만 당사 자 사이의 책임제한 등에 관한 규정은 명확하고 상세하게 규정되어야 한다. 따 라서 선박소유자 등에 대한 채권이 상법 제769조 제1호의 책임제한채권에 해당하는지 여부를 논하기에 앞서, 용선계약 내지 운송계약상 선박소유자 등의 책 임제한을 인정하는 당사자의 합의가 있었는지 여부를 검토할 필요가 있다. 한 편 선박소유자 등의 책임제한 내지 면책에 관한 논의는 이들의 책임기간과 대 응하여 고찰할 필요가 있고, 1976년 책임제한조약은 운송인의 책임제한에 관한 국제적 입법례와 상호 영향을 주고받으면서 발전해 왔다는 점을 감안할 필요가 있다. 특히 헤이그 비스비규칙은 운송인의 책임기간을 선적시부터 양하시까지 로 한정하고 있다는 점에서, 1976년 책임제한조약이 선박소유자 등의 책임제한 채권을 원칙적으로 「선박에서 또는 선박의 운항에 직접 관련하여 발생한 손해 에 관한 채권 또는 그러한 손해로 인한 연속적 손해에 관한 채권」으로 제한한 것은 선박소유자 등의 책임제한채권의 인정범위를 책임기간에 일치시키고자 한 것으로 보인다. 1976년 책임제한조약의 입법취지는 책임제한채권을 제한하 려는 것이 아니라, 책임제한채권을 확대하여 사실상 깨어지지 않는 책임제한제 도를 확립하고자 한 것에 있다는 점은, 우리 상법상 책임제한제도의 운영에 있 어서도 경청할 필요가 있다. 1976년 책임제한조약의 입법취지를 감안한다면, 선 하증권과 상환하지 않고 운송물을 증권의 정당한 소지인이 아닌 타인에게 인도 함으로써 손해가 발생한 경우에도 그러한 손해도 원칙적으로 1976년 책임제한 조약 제2조에서 규정한 책임제한채권에 포함하되, 선박소유자 등에게 동 조약 제4조 또는 상법 제769조에서 규정하고 있는 고의 등 책임제한의 주관적 배제 사유가 존재하는 경우에는 책임제한권을 부정하는 것이 타당할 것이다.

본 실험에서는 폴리프로필렌를 이용하여 중공사의 형태로 제조되었다. 권취속도를 달리하여 중공사막을 제조하였으며, 코어로는 질소를 사용하였다. 제조된 중공사는 만능재료시험기를 이용하여 응력과 변현율을 측정하였다. 그리고 시차 주사열량계(DSC)를 이용하여 각각의 샘플의 결정화도를 측정하였고, 권취속도와 어닐링 효과에 따른 결정화도의 거동을 조사하였다. 냉연신과 열연신을 거친 중 공사 분리막은 전계방출형주사현미경(FE-SEM)을 이용하여 단면, 표면의 모폴로지를 관찰 하였다.