본 연구는 국내 어린이신문의 내용적 문제점과 원인을 탐색하여 이를 개선할 수 방안을 도출해보고자 하였다. 1차적으로 국내에서 발간되는 어린이신문에 대 한 내용적 문제점을 파악하기 위해 지면을 비교분석을 실시하였고 , 그 원인 과 해법을 탐색하기 위해 초점집단 (초등학생과 학부모, 교사, 언론인, 전문가)을 대상 으로 심층인터뷰를 실시하였다 . 내용분석 결과에 따르면, 일반 신문과는 차별되게 이 미지와 텍스트를 함께 사용한 형태의 기사와 중립·긍정적인 기사가 가장 많았다 . 어린 이신문의 기사 비중은 42%로 정보·학습적 내용과 광고가 더 높은 비중을 보였다 . 정 보·학습 콘텐츠는 영어·한자 학습에 편중되었으며 , 자체 제작보다는 학습콘텐츠 제작업 체와 이들의 출판물에 의존하는 경향이 나타났다 . 광고는 도서광고가 주류를 이루었 다. 심층인터뷰의 분석결과 , 어린이신문은 사회문제에 대한 관심과 이해 증대, 글쓰기 능력과 사고력·판단력 향상에 도움을 주는 것으로 평가되었다 . 하지만 어린이신문이 신문보다는 ‘학습지’에 가깝다고 평가되었다 . 따라서 기사의 비중 확대와 학습·정보 내 용과 광고의 축소, 초등학생의 학년별 수준에 맞춘 기사 제공의 필요성이 제기되었다 . 아울러, 어린이신문의 활성화와 가정·학교에서의 이용 활성화를 위해서는 어린이신문 의 보급에 대한 재정 지원, 읽기 문화 진흥을 위한 정책의 필요성이 제시되었다 .

본 연구는 여대생들의 유방암 검진의도를 높이기 위한 심리적 결정요인을 살펴 보고자 하였으며 , 이를 위해 건강신념모델을 구성하는 4개의 신념변인들 (지 각된 이익성, 지각된 민감성, 지각된 심각성, 지각된 장애성 )이 유방암 검진의도에 미 치는 영향을 살펴보았다 . 첫째, 지각된 이익성은 유방암 검진의도에 직접적인 영향을 주는 예측변인으로 확인되었으나 , 지각된 민감성과 지각된 심각성, 지각된 장애성은 유방암 검진의도에 직접적인 영향을 미치지 못하였다 . 둘째, 사회적 지지를 구성하는 변인들(친구지지 , 가족지지 , 타인지지 )이 자기효능감에 미치는 영향을 살펴보았다 . 그 결과, 친구지지는 자기효능감에 직접적 영향을 미치는 것으로 나타났고 , 가족지지와 타인지지도 자기효능감을 높이는데 영향을 미치는 요인으로 밝혀졌다 . 셋째, 유방암 검진과 관련 자기효능감이 유방암 검진의도에 미치는 영향을 살펴본 결과, 자기효능감 은 유방암 검진의도에 직접적 영향을 미치는 것으로 나타났다 .

리게티와 펜레데츠키는 공통점이 많다. 둘 다 구 공산권 국가 출신이며 , 전후 작곡가 세대를 아방가르드적 작곡 양식을 통해 이끌었다고 할 수 있다. 그들 의 미학적 경향은 음악적 재료 선택과 작곡 과정, 그리고 형식적 구성에 대 한 태도 등에서 드러날 뿐만 아니라, 이를 종이 위에 기호화시킨 기보 방식에서도 읽 을 수 있다. 작곡 경향과 기보 방식에 있어서의 차이점은 총렬음악과 우연음악에 대한 그들의 비판과 수용적 측면에서 살필 수 있다. 리게티는 작품의 전체를 일정한 법칙과 질서 안에서 엄격하게 통제하고 관리하는 총렬음악의 작곡 방식에 대하여 비판적으로 접근한다 . 반면, 작곡 원칙에 대하여는 일부분 수용하는 측면이 보이는데 , 그는 작곡 과정뿐만 아니라 형식까지도 통제할 수 있는 작곡 방식으로 "미크로폴리포니 "를 제시 한다. 이 기법을 통해 소리의 결과는 미세한 "망형성체 "로 구체화된다 . 펜데레츠키는 연주 시에 일어나는 의도하지 않은 우연성에 대한 고려를 작곡 과정에서 놓치지 않는 다. 그의 그래픽 기보법은 바로 이러한 의도가 담긴 악보이다 .

이 연구는 싸이의 강남스타일이 한국과는 문화적 차이가 큰 미국에서 어떻게 문 화적 차이를 극복하고 수용될 수 있었는지 강남스타일의 수용과 유통을 통해 향후 K-POP의 발전가능성을 진단해 보는데 그 목적이 있다. 이를 위해 미국에 거주 하는 18세 이상 성인 중 강남스타일 뮤직비디오를 한번이라도 시청한 사람들은 대상 으로 온라인 설문조사를 실시하였다 . 분석결과 몇 가지 흥미 있는 결과가 나왔는데 , 우선 강남스타일과 같은 K-pop의 수용은 미주지역에 거주하는 백인보다는 유색인종 이 주도적인 것으로 나타났다 . 그러나 K-pop을 시청한 이후 이를 확산시키기 위한 행 동에서는 백인이 더 적극적인 것으로 나타났다 . 또 강남스타일은 노래와 춤, 가수가 한데 어우러진 잘 만들어진 뮤직 비디오 때문에 성공할 수 있었지만 , 이외에 강남스타 일의 확산에는 매스미디어와 소셜미디어가 상당히 영향을 미친 것으로 나타났다 .

본 연구는 수용자의 광고 회의주의와 제품 관여도 그리고 인구 통계적 요 인들을 통해 커뮤니케이션 효과에 어떤 변화가 있는지를 실험을 통해 밝 혀보는데 그 목적이 있다. 연구결과 , 광고 회의주의와 제품 관여도 그리고 인구통계적 요인은 광고에 대한 태도, 상표에 대한 태도 그리고 구매의도에 3원 상호작용효과가 있는 것으로 밝혀 졌다. 좀 더 세부적으로 살펴보면 , 광고에 대한 태도의 경우에는 광고 회의주의와 제품 관여도 그리고 광고 회의주의와 성별에서 상호작용효과가 나타났다 . 또한 상 표에 대한 태도와 구매의도의 경우에는 동일하게 광고 회의주의와 제품 관여도 , 광 고 회의주위와 구매의도 그리고 제품 관여도와 성별에서 상호작용 효과가 밝혀졌 다. 광고에 대한 태도의 경우에만 제품 관여도와 성별의 상호작용효과가 나타나지 않았다. 결국 연구결과에서 알 수 있듯이 광고회의주의는 본 연구에서 선정한 종속 변인모두에서 유의적인 영향을 미치고 있는 것으로 나타났다 . 이 결과가 시사하는 점은 수용자의 광고 회의주의에 대한 변인은 특정 변인에만 한정하여 영향을 미치 고 있는 것이 아니라 수용자의 다양한 속성과 결합하여 커뮤니케이션 결과를 수용 하거나 거부로 유도하는 주요 원인이 될 수 있기 때문에 광고 전략 수립 시에 고 려해야 하는 중요한 변인이라는 점이다.

이 연구는 부산지역 대학생들의 롯데 자이언츠 프로야구 관람의도 결정요인을 규명하고자 했다. 구체적으로 선행연구에 근거하여 구조적 환경 변인으로서 지역정체성 , 프로야구 중계방송 시청빈도 , 그리고 팀(롯데 자이언츠) 동일시 , 스폰서 그룹에 대한 태도 변인, 인간의 사회문화적 행위예측에 유용성을 보이는 계획행동이론 변인을 통해 프로야구 관람의도 결정요인을 포괄적으로 규명하고자 했다. 연구결과 첫째, 지역 정체성 변인을 구성하는 인지적 통합도와 적극적 관여도는 모 두 프로야구 관람의도에 정적인 영향을 미쳤다. 둘째, 프로야구 중계방송 시청정도 역 시 프로야구 관람의도에 정적인 영향을 미쳤다. 셋째, 롯데 자이언츠 팀 동일시의 경 우 행동적 동일시만 프로야구 관람의도에 정적인 영향을 미쳤다 . 넷째, 롯데 자이언츠 스폰서 그룹에 대한 태도는 프로야구 관람의도에 기여하지 못했다. 다섯째, 계획행동 이론 변인 중 태도와 주관적 규범은 프로야구 관람의도에 정적인 영향을 미쳤으나 , 인 지된 행위통제의 설명력은 도출되지 않았다.

We investigated the characteristics of electroless plated Cu films on screen printed Ag/Anodized Al substrate. Cu plating was attempted using neutral electroless plating processes to minimize damage of the anodized Al substrate; this method used sodium hypophosphite instead of formaldehyde as a reducing agent. The basic electroless solution consisted of CuSO4·5H2O as the main metal source, NaH2PO2·H2O as the reducing agent, C6H5Na3O7·2H2O and NH4Cl as the complex agents, and NiSO4·6H2O as the catalyser for the oxidation of the reducing agent, dissolved in deionized water. The pH of the Cu plating solutions was adjusted using NH4OH. According to the variation of pH in the range of 6.5~8, the electroless plated Cu films were coated on screen printed Ag pattern/anodized Al/Al at 70˚C. We investigated the surface morphology change of the Cu films using FE-SEM (Field Emission Scanning Electron Microscopy). The chemical composition of the Cu film was determined using XPS (X-ray Photoelectron Spectroscopy). The crystal structures of the Cu films were investigated using XRD (X-ray Diffraction). Using electroless plating at pH 7, the structures of the plated Cu-rich films were typical fcc-Cu; however, a slight Ni component was co-deposited. Finally, we found that the formation of Cu film plated selectively on PCB without any lithography is possible using a neutral electroless plating process.

Photoelectrochemical cells have been used in photolysis of water to generate hydrogen as a clean energy source. A high efficiency electrode for photoelectrochemical cell systems was realized using a ZnO hierarchical nanostructure. A ZnO nanofiber mat structure was fabricated by electrospinning of Zn solution on the substrate, followed by oxidation; on this substrate, hydrothermal synthesis of ZnO nanorods on the ZnO nanofibers was carried out to form a ZnO hierarchical structure. The thickness of the nanofiber mat and the thermal annealing temperature were determined as the parameters for optimization. The morphology of the structures was examined by field-emission scanning electron microscopy, transmission electron microscopy, and X-ray diffraction. The performance of the ZnO nanofiber mat and the potential of the ZnO hierarchical structures as photoelectrochemical cell electrodes were evaluated by measurement of the photoelectron conversion efficiencies under UV light. The highest photoconversion efficiency observed was 63 % with a ZnO hierarchical structure annealed at 400˚C in air. The morphology and the crystalline quality of the electrode materials greatly influenced the electrode performance. Therefore, the combination of the two fabrication methods, electrospinning and hydrothermal synthesis, was successfully applied to fabricate a high performance photoelectrochemical cell electrode.

The effect of interstitial elements on the ductile-brittle transition behavior of austenitic Fe-18Cr-10Mn-2Ni alloys with different nitrogen and carbon contents was investigated in this study. All the alloys exhibited ductile-brittle transition behavior because of unusual low-temperature brittle fracture, even though they have a faced-centered cubic structure. With the same interstitial content, the combined addition of nitrogen and carbon, compared to the sole addition of nitrogen, improved the low-temperature toughness and thus decreased the ductile-brittle transition temperature (DBTT) because this combined addition effectively enhances the metallic component of the interatomic bonds and is accompanied by good plasticity and toughness due to the increased free electron concentration. The increase in carbon content or of the carbon-to-nitrogen ratio, however, could increase the DBTT since either of these causes the occurrence of intergranular fracture that lead to the deterioration of the toughness at low temperatures. The secondary ion mass spectroscopy analysis results for the observation of carbon and nitrogen distributions confirms that the carbon and nitrogen atoms were significantly segregated to the austenite grain boundaries and then caused grain boundary embrittlement. In order to successfully develop austenitic Fe-Cr-Mn alloys for low-temperature application, therefore, more systematic study is required to determine the optimum content and ratio of carbon and nitrogen in terms of free electron concentration and grain boundary embrittlement.

Activated carbon (AC) was synthesized from rice husks using the chemical activation method with KOH, NaOH, a combination of (NaOH + Na2CO3), and a combination of (KOH + K2CO3) as the chemical activating reagents. The activated carbon with the highest surface area (around 2000m2/g) and high porosity, which allows the absorption of a large number of ions, was applied as electrode material in electric double layer capacitors (EDLCs). The AC for EDLC electrodes is required to have a high surface area and an optimal pore size distribution; these are important to attain high specific capacitance of the EDLC electrodes. The electrodes were fabricated by compounding the rice husk activated carbons with super-P and mixed with polyvinylidene difluoride (PVDF) at a weight ratio of 83:10:7. AC electrodes and nickel foams were assembled with potassium hydroxide (KOH) solution as the electrolyte. Electrochemical measurements were carried out with a three electrode cell using 6 M KOH as electrolyte and Hg/HgO as the reference electrode. The specific capacitance strongly depends on the pore structure; the highest specific capacitance was 179 F/g, obtained for the AC with the highest specific surface area. Additionally, different activation times, levels of heating, and chemical reagents were used to compare and determine the optimal parameters for obtaining high surface area of the activated carbon.

Chalcopyrite CuInSe2(CIS) is considered to be an effective light-absorbing material for thin film photovoltaic solarcells. CIS thin films have been electrodeposited onto Mo coated and ITO glass substrates in potentiostatic mode at roomtemperature. The deposition mechanism of CIS thin films has been studied using the cyclic voltammetry (CV) technique. Acyclic voltammetric study was performed in unitary Cu, In, and Se systems, binary Cu-Se and In-Se systems, and a ternaryCu-In-Se system. The reduction peaks of the ITO substrate were examined in separate Cu2+, In3+, and Se4+ solutions.Electrodeposition experiments were conducted with varying deposition potentials and electrolyte bath conditions. Themorphological and compositional properties of the CIS thin films were examined by field emission scanning electronmicroscopy (FE-SEM) and energy dispersive spectroscopy (EDS). The surface morphology of as-deposited CIS films exhibitsspherical and large-sized clusters. The deposition potential has a significant effect on the film morphology and/or grain size,such that the structure tended to grow according to the increase of the deposition potential. A CIS layer deposited at −0.6Vnearly approached the stoichiometric ratio of CuIn0.8Se1.8. The growth potential plays an important role in controlling thestoichiometry of CIS films.

Synthesis of sub-micron 2SnO·(H2O) powders by chemical reduction process was performed at room temperature as function of viscosity of methanol solution and molecular weight of PVP (polyvinylpyrrolidone). Tin(II) 2-ethylhexanoate and sodium borohydride were used as the tin precursor and the reducing agent, respectively. Simultaneous calcination and sintering processes were additionally performed by heating the 2SnO·(H2O) powders. In the synthesis of the 2SnO·(H2O) powders, it was possible to control the powder size using different combinations of the methanol solution viscosity and the PVP molecular weight. The molecular weight of PVP particularly influenced the size of the synthesized 2SnO·(H2O) powders. A holding time of 1 hr in air at 500˚C sufficiently transformed the 2SnO·(H2O) into SnO2 phase; however, most of the PVP (molecular weight: 1,300,000) surface-capped powders decomposed and was removed after heating for 1 h at 700˚C. Hence, heating for 1 h at 500˚C made a porous SnO2 film containing residual PVP, whereas dense SnO2 films with no significant amount of PVP formed after heating for 1 h at 700˚C.

In this study, intermediate-mixed powders were prepared by loading zirconia powders initially in a ball-mill jar and loading alumina powders afterward; the initial-mixed powders were produced by loading zirconia and alumina powders together in the ball-mill jar. The effect of such differences in mixing method on the mechanical properties was investigated. In intermediate-mixed powders, the volume fraction of large particles slightly increased and, simultaneously, zirconia particles formed agglomerates that, due to early ball-mill loading of the zirconia powders only, were more dispersed than were the initial-mixed powders. For the intermediate-mixed powders, zirconia agglomerates were destroyed more quickly than were initial-mixed powders, so the number of dispersed zirconia particles rose and the inhibitory effect of densification due to the addition of a second phase was more obvious. In the microstructure of intermediate-mixed powders, zirconia grains were homogeneously dispersed and grain growth by coalescence was found to occur with increasing sintering temperature. For the initial-mixed powders, large zirconia grains formed by localized early-densification on the inside contacts of some zirconia agglomerates were observed in the early stages of sintering. The intermediate-mixed powders had slightly lower hardness values as a whole but higher fracture toughness compared to that of the initial-mixed powders.

Nanocrystalline materials have recently received significant attention in the area of advanced materials engineering due to their improved physical and mechanical properties. A solid-solution nanocrystalline powder, (Ti,Mo)C, was prepared via high-energy milling of Ti-Mo alloys with graphite. Using XRD data, the synthesis process was investigated in terms of the phase evolution. Rapid sintering of nanostuctured (Ti,Mo)C hard materials was performed using a pulsed current activated sintering process (PCAS). This process allows quick densification to near theoretical density and inhibits grain growth. A dense, nanostructured (Ti,Mo)C hard material with a relative density of up to 96 % was produced by simultaneous application of 80 MPa and a pulsed current for 2 min. The average grain size of the (Ti,Mo)C was lower than 150 nm. The hardness and fracture toughness of the dense (Ti,Mo)C produced by PCAS were also evaluated. The fracture toughness of the (Ti,Mo)C was higher than that of TiC.

Cu2ZnSn(Sx,Se1-x)4 (CZTSSe) thin films were prepared by sulfurization of evaporated precursor thin films. Precursor was prepared using evaporation method at room temperature. The sulfurization was carried out in a graphite box with S powder at different temperatures. The temperatures were varied in a four step process from 520˚C to 580˚C. The effects of the sulfurization temperature on the micro-structural, morphological, and compositional properties of the CZTSSe thin films were investigated using X-ray diffraction (XRD), Raman spectra, field emission scanning electron microscopy (FE-SEM), and transmission electron microscopy (TEM). The XRD and Raman results showed that the sulfurized thin films had a single kesterite crystal CZTSSe. From the FE-SEM and TEM results, the Mo(Sx,Se1-x)2 (MoSSe) interfacial layers of the sulfurized CZTS thin films were observed and their thickness was seen to increase with increasing sulfurization temperature. The microstructures of the CZTSSe thin films were strongly related to the sulfurization temperatures. The voids in the CZTSSe thin films increased with the increasing sulfurization temperature.

A powder in sheath rolling method was applied to the fabrication of a carbon nano tube (CNT) reinforced aluminum composite. A 6061 aluminum alloy tube with outer diameter of 31 mm and wall thickness of 2 mm was used as a sheath material. A mixture of pure aluminum powder and CNTs with a volume content of 5% was filled in the tube by tap filling and then processed to an 85% reduction using multi-pass rolling after heating for 0.5 h at 400˚C. The specimen was then further processed at 400˚C by multi-pass hot rolling. The specimen was then annealed for 1 h at various temperatures that ranged from 100 to 500˚C. The relative density of the 5vol%CNT/Al composite fabricated using powder in sheath rolling increased with increasing of the rolling reduction, becoming about 97% after hot rolling under 96 % total reduction. The relative density of the composite hardly changed regardless of the increasing of the annealing temperature. The average hardness also had only slight dependence on the annealing temperature. However, the tensile strength of the composite containing the 6061 aluminum sheath decreased and the fracture elongation increased with increasing of the annealing temperature. It is concluded that the powder in sheath rolling method is an effective process for fabrication of CNT reinforced Al matrix composites.

The purpose of the current study was to determine the intra- and inter-rater reliability of muscle thickness (MT) measurement of the psoas major (PM) using ultrasonography (US) conducted at different inward pressures of approximately .5 ㎏, 1.0 ㎏, 1.5 ㎏, and 2.0 ㎏. Twelve healthy male subjects were recruited for the study. The thicknesses of both PMs of each subject were measured by two different examiners in a random manner to assess the intra- and inter-rater reliability. The measurement values were analyzed using the intra-class correlation coefficient (ICC) with a 95% confidence interval (CI). ICC (2,1) was used to determine the inter-rater reliability and ICC (3,1) was used to assess the intra-rater reliability of the MT measurement of the PM. The results indicated higher ICC values for intra-rater reliability compared to inter-rater reliability. In addition, the value for intra-rater reliability with .5 ㎏ inward pressure [ICC=.99 (95%CI=.98∼.99)] was higher compared to 1.0 ㎏, 1.5 ㎏, and 2.0 ㎏. Other inward pressures for intra- and inter-rater reliability in current study were also demonstrated to have excellent values (ICC=.94∼.99). These findings showed that maintaining consistent inward pressure is essential for maintaining reliability of the results when the MT of the PM is measured by different examiners in a clinical setting.

The first purpose was to identify the plantar pressure distributions (peak pressure, pressure integral time, and contact area) during level walking, and stair ascent and descent in asymptomatic flexible flatfoot (AFF). The second purpose was to investigate whether peak pressure data during level walking could be used to predict peak pressure during stair walking by identifying correlations between the peak pressures of level walking and stair walking. Twenty young adult subjects (8 males and 12 females, age 21.0±1.7 years) with AFF were recruited. A distance greater than 10 ㎜ in a navicular drop test was defined as flexible flatfoot. Each subject performed at least 10 steps during level walking, and stair ascent and descent. The plantar pressure distribution was measured in nine foot regions using a pressure measurement system. A two-way repeated analysis of variance was conducted to examine the differences in the three dependent variables with two within-subject factors (activity type and foot region). Linear regression analysis was conducted to predict peak pressure during stair walking using the peak pressure in the metatarsal regions during level walking. Significant interaction effects were observed between activity type and foot region for peak pressure (F=9.508, p<.001), pressure time integral (F=5.912, p=.003), and contact area (F=15.510, p<.001). The regression equations predicting peak pressure during stair walking accounted for variance in the range of 25.7% and 65.8%. The findings indicate that plantar pressures in AFF were influenced by both activity type and foot region. Furthermore the findings suggest that peak pressure data during level walking could be used to predict the peak pressure data during stair walking. These data collected for AFF can be useful for evaluating gait patterns and for predicting pressure data of flexible flatfoot subjects who have difficulty performing activities such as stair walking. Further studies should investigate plantar pressure distribution during various functional activities in symptomatic flexible flatfoot, and consider other predictors for regression analysis.

The purpose of this study was to investigate the effects of active and passive postural perturbation on ankle dorsiflexor responses in stroke patients. The subjects consisted of 13 stroke patients. Using wireless electromyography, the patients’ ankle dorsiflexor muscle responses were measured under the following conditions: active dorsiflexion (AD), active perturbation (AP), and passive perturbation (PP). Tibialis anterior muscle activity increased most significantly during PP of the affected side (118.64±56.28). The most significant increase for the non-affected side was in AD (72.64±24.56). Tibialis anterior muscle activity was compared under each condition. The affected side showed significant differences between PP and AD and between PP and AP (p<.05). The non-affected side showed not significant differences between each condition. The ratios of tibialis anterior muscle activity under AP to that under AD were 1.00 on the affected side and .75 on the non-affected side and the difference was not significant (p>.05). The ratios of tibialis anterior muscle activity under PP to that under AD were 3.30 on the affected side and 1.14 on the non-affected side and the difference was significant (p<.05). Passive perturbation improved tibialis anterior muscle activity on the affected side, and training based on this approach may have the potential to improve the ankle dorsiflexion of people with stroke.

The purpose of this study was to determine which spatiotemporal gait parameters obtained during hemiplegic walking could be a predictive factor for the Timed Up and Go test (TUG). Two hundreds nine subjects who had suffered a stroke were recruited for this study. They were participated in two assessments; the TUG test and gait analysis. The relationship between the TUG test and spatiotemporal parameters was analyzed using Pearson’s correlation coefficients. In addition, to predict the spatiotemporal gait parameters that correlated most with the TUG scores, we used multiple linear regression analyses (stepwise method). The results show that the normalized velocity was strongly correlated with the TUG performance (r=-.72, p<.001). Additionally, single support percentage (SSP), double support percentage (DSP), step time difference (STD), and step length difference (SLD) significantly were correlated with the TUG test. Normalized velocity, STD, DSP of affected side, and SSP of non-affected side explained 53%, 8%, 3%, 2%, of variance in the TUG test respectively. In conclusion, an increase in gait velocity and a decrease in STD would be effective indicators of improvement on the functional mobility in the stroke rehabilitation.