본 연구는 아파트 필로티 공간 활용과 친보행환경 조성을 위한 내용으로 설계안을 구성하였다. 계획대상지 면적은 약 11,700㎡이다. 이웃과의 소통이 줄어드는 최근 주거문화의 문제점을 해결하고 아파트라는 단순한 주거시설을 넘어 예술적 문화공간을추구하는 이념 아래 예술과 자연, 그리고 이웃이라는 삼각형 구조를 유기적으로 연결하여 소통이 있는 주거 공간 형태를계획에 반영하였다. 설계의 주안점으로 첫째, 기존의 단절된 아파트로서의 이미지를 개선하고 소통의 장을 열어주어 친보행공간을제공하도록 계획하였다. 둘째, 보행로를 램프로 설계하여 노약자가 존중받을 수 있는 주거 문화를 창출하도록 계획하였다.셋째, 자원 순환 프로그램과 다양한 참여 프로그램을 통해 문화 예술 활동이 가능한 유연한 공간을 창출하였다. 본 연구는 기존의 아파트 조경설계 개념을 벗어나 예술과 이웃, 그리고 더 나아가 자연과의 소통을 이끌어냄으로서 새롭고진보적인 아파트 공간 조성 계획에 기여할 수 있을 것이다.

Films consisting of a silicon quantum dot superlattice were fabricated by alternating deposition of silicon rich silicon nitride and Si3N4 layers using an rf magnetron co-sputtering system. In order to use the silicon quantum dot super lattice structure for third generation multi junction solar cell applications, it is important to control the dot size. Moreover, silicon quantum dots have to be in a regularly spaced array in the dielectric matrix material for in order to allow for effective carrier transport. In this study, therefore, we fabricated silicon quantum dot superlattice films under various conditions and investigated crystallization behavior of the silicon quantum dot super lattice structure. Fourier transform infrared spectroscopy (FTIR) spectra showed an increased intensity of the 840 cm-1 peak with increasing annealing temperature due to the increase in the number of Si-N bonds. A more conspicuous characteristic of this process is the increased intensity of the 1100 cm-1 peak. This peak was attributed to annealing induced reordering in the films that led to increased Si-N4 bonding. X-ray photoelectron spectroscopy (XPS) analysis showed that peak position was shifted to higher bonding energy as silicon 2p bonding energy changed. This transition is related to the formation of silicon quantum dots. Transmission electron microscopy (TEM) and electron spin resonance (ESR) analysis also confirmed the formation of silicon quantum dots. This study revealed that post annealing at 1100˚C for at least one hour is necessary to precipitate the silicon quantum dots in the SiNx matrix.

Solar cells have been more intensely studied as part of the effort to find alternatives to fossil fuels as power sources.The progression of the first two generations of solar cells has seen a sacrifice of higher efficiency for more economic use ofmaterials. The use of a single junction makes both these types of cells lose power in two major ways: by the non-absorptionof incident light of energy below the band gap; and by the dissipation by heat loss of light energy in excess of the band gap.Therefore, multi junction solar cells have been proposed as a solution to this problem. However, the 1st and 2nd generation solarcells have efficiency limits because a photon makes just one electron-hole pair. Fabrication of all-silicon tandem cells using anSi quantum dot superlattice structure (QD SLS) is one possible suggestion. In this study, an SiOx matrix system was investigatedand analyzed for potential use as an all-silicon multi-junction solar cell. Si quantum dots with a super lattice structure (Si QDSLS) were prepared by alternating deposition of Si rich oxide (SRO; SiOx (x=0.8, 1.12)) and SiO2 layers using RF magnetronco-sputtering and subsequent annealing at temperatures between 800 and 1,100oC under nitrogen ambient. Annealing temperaturesand times affected the formation of Si QDs in the SRO film. Fourier transform infrared spectroscopy (FTIR) spectra and x-rayphotoelectron spectroscopy (XPS) revealed that nanocrystalline Si QDs started to precipitate after annealing at 1,100oC for onehour. Transmission electron microscopy (TEM) images clearly showed SRO/SiO2 SLS and Si QDs formation in each 4, 6, and8nm SRO layer after annealing at 1,100oC for two hours. The systematic investigation of precipitation behavior of Si QDsin SiO2 matrices is presented.

In this study, commercial pellet type sorbents for the collection of CO2 from a local municipal waste incinerator were prepared and characterized in terms of adsorption efficiency by varying the operating conditions of a field process. The concentration of CO2 in the flue gas ranged from 8 to 10%, which entered the test packed bed. As a result of this experiment, the sorbent procured from A-company, which is mainly composed of calcium compounds, showed the highest adsorption efficiency. The regeneration efficiency was fairly low, however. It also was found that based on adsorption breakthrough time, the relatively low flow rate of 10 LPM into the bed allowed higher collection efficiency. The higher flow rate of 40 LPM, on the other hand, tended to decrease the retention of the adsorption.

도시의 가로경관은 도시민의 사고와 행동에 영향을 미친다. 색채는 가로경관을 구성하는 중요한 요소이다. 본 연구는 색채분석을 통하여 가로경관의 시각적인 문제점을 발견하는 동시에 그 개선방안을 마련함으로써 가로경관의 성격과 특징에알맞은 쾌적하고 미적인 거리를 조성하는 방법을 제시하고자 하였다. 본 연구의 대상지는 홍대 걷고 싶은 거리로, 가로의색채 환경을 조사 분석 한 결과, 가로는 명도와 채도가 일정치 않고 색상 또한 지나치게 다양하게 사용되어 혼란스러운느낌을 주고 있음을 알 수 있었다. 이에 본 연구에서는 설문조사를 통한 문제점과 개선점을 바탕으로, 개선시 요구되는 형용사이미지인 ‘경쾌한’을 기준으로 제안색채가이드라인을 제작하여 홍대 걷고 싶은 거리에 조화로운 색채계획이 이루어질 수 있는기반을 마련하고자 하였다.

SMIL(Synchronized Multimedia Integration Language)는 멀티미디어 객체의 집합을 시간적으로 동기화하여 표현할 수 있는 마크업언어로 W3C에 의해서 1998년 7월에 발표된 멀티미디어 데이터의 통합표현을 위한 언어의 표준이다. 본 논문에서는 SMIL을 기반으로 한 기능성 교육용 게임을 시간에 따라 멀티미디어 데이터파일을 명확하게 동기화 할 수 있도록 객체지향 기반의 시각화 도구인 UML을 이용하여 모델링하고 이를 기반으로 설계․구현한다. 즉, 본 논 문에서는 학습자의 수준에 따라 기능성 교육용 게임의 데이터파일을 눈높이에 맞게 설정, 조정할 수 있는 객체모델링 방법을 제안하고, 설계․구현하여 학습자의 학습의 효과를 높이는데 목적이 있다.

The purpose of this study was to examine the state of the utilization of Web materials among elementary teachers in P.E. class and their satisfaction in a bid to provide teachers and developers of materials with useful information on the improvement of P.

This study addresses the development of a soy hamburger patty containing enzyme-treated textured soy protein (TSP) as a meat analogue. In order to reduce the beany flavor and enhance the texture, TSP was treated with 0.3% Flavourzyme for 5, 10, 20, or 30 min. The degree of hydrolysis and the water holding capacity of the TSP increased with increasing hydrolysis time. The oil binding capacity of the TSP also increased with increasing hydrolysis time, approaching the maximal value, 175.82%, at 30 min, whereas that of pork scored with the lowest value of 128.67%. The volume of pork was reduced to 81.5% as the result of heat treatment, whereas that of the TSP increased to 140.57%. The values of 'L', 'b', and 'δE' differed significantly (p〈0.001) with heat treatment, but the 'a' values did not differ significantly. With regard to texture, the hardness values were highest in the pork hamburger patty (PHP), and were lowest in the soy hamburger patty (SHP) containing untreated TSP. The hardness of the SHP containing TSP treated for 20 min did not differ significantly from that of the PHP. The cohesiveness and gumminess of the SHP treated for 20 min were highest, whereas those treated for 10 min were the lowest. The gumminess of the SHP treated for 20 min did not differ significantly from that of pork. The chewiness of the PHP was the highest, whereas that of the SHP treated for 5 min was the lowest. In our sensory evaluation, PHP evidenced the highest scores, followed by the SHP treated for 30 min, as color, texture, beany flavor, and overall quality all improved as the consequence of increasing enzyme treatment duration. In conclusion, it is believed that SHP has great potential as a substitute for meat, in that the flavor, texture, and beany flavor of SHP did not differ significantly from those of PHP.

Elongated CdSe nanoparticles with a diameter of 3-7nm have been successfully synthesized using two surfactants of trioctylphospine (TOP) and hexadecylamine (HDA) at . The formation of elongated CdSe nanoparticles is possibly due to the cooperative effects from both the different binding capability of two surfactants (TOP and HDA) and intrinsically anisotropic crystal structure of the CdSe. The electron diffraction pattern of CdSe nanoparticles revealed the formation of wurzite phase. The CdSe samples showed red-shifted wavelength from 560 to 580nm with increasing the refluxing time due to the gradual growth of CdSe nanoparticles. The relatively broad absorption band can be attributed to the surface state of CdSe nanoparticles. The possible formation mechanism of elongated CdSe nanoparticles was proposed and the characteristics of CdSe have been discussed as well.

[ SF6 ] gas has been widely used as an insulating, cleaning and covering gas due to its outstanding insulating feature and because of its inert properties. However, the global warming potential of SF6 gas is extremely high relative to typical global warming gases such as CO2, CFCs, and CH4. For these reasons, it is necessary to separate and collect waste SF6 gas. In this study, the effects of a surfactant (Tween) on the formation rate of SF6 gas hydrates were investigated. The SF6 gas hydrate formation rate increased with the addition of Tween and showed a nearly 6.5 times faster hydrate formation rate with an addition of 0.2 wt.% Tween compared to an addition of pure water. This is believed to be due to the increased solubility of SF6 gas with the addition of the surfactant. It was also found that SF6 gas hydrate in the surfactant solution showed two-stage hydrate formation rates with a formation rate that increased rapidly in the 2nd stage.

To resolve coelution phenomenon of acetone and acrolein in the HPLC‐based analysis of carbonyls, we attempted to find the optimal conditions for their separation. For the purpose of this study, the collection of carbonyl Compounds is made by DNPH‐coated cartridges. Quantification of carbonyls is then initiated by the formation of hydrazone derivatives that are then separated by HPLC and detected by UV‐VIS spectroscopic detector (at 360 nm). To the course of this experiment, we examined the influences of the three major experimental variables such as 5 temperature (25, 30, 40, 50 and 60℃), 2 flow rate (1.0 and 1.2 mL min‐1), and variable relative composition of mobile phase (among acetonitrile, water, and tetrahydrofuran). According to our experiments, the optimal condition for separation was found at flow rate of 1.2 mL min‐1 and temperature of 32℃ with the mobile phase composition of acetonitrile:water:tetrahydrofuran = 34 : 52.8 : 13.2.

Previous ly we have s hown that fï brob last• growth factor-2 (FGF-2) and dexamethasone (Dex) in combination strongly stimulate both p l 이 i fe rati o n a nd differe nt iation of mesenchymal stem cells (MSCs) into osteoblasts and adipocytes, In the present s tudy we invesL igaLed whether inhibition 01' FGF-2 and Dex-induced adipogenic differentiation of bone marrow derived s Lem cells (BMSCs) by GW9662, an antagoni s t of proxisome proliferators-activated receptol γ (PPARy) which plays a key role in ad ipogenic differentiation , enhances proliferation and osteoblastic differentiation of BMSCs Proliferation 01' BMSCs t reated wi 네 FGF-2 a nd Dex was further increased by GW9662 up to 9,7, 10,6, and 7,2% at 3, 5, and 7 days of cul Lu re , Expansion of BMSCs with FGF-2, Dex and GW9662 followed by osteoblastic different iation showed that osteoblas tic differentiation 01' BMSCs was in creased by 37 % (p=O, 01) compared to those expanded with FGF-2 and Dex, ln contrast , ad i pogenic di fferenti a tion of FGF-2 and Dex-expanded BMSCs was substantially reduced to 14% (p=O, 036) by GW9662, Taken toget her , these resul ts demonstrate that FGF-2 and Dex in combination with GW9662 f ur t her stimu late proliferation 01' BMSCs and those cells expanded with these factors acquire enhanced potentiaIs to be dif ferentiated i n to osteoblas ts