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인체비례에 나타난 기하학과 건축디자인에서의 현대적 적용에 관한 연구
장보윤(Jang. Bo Yun),최재희(Choy. Jae Hee) 대한건축학회 2004 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.24 No.1
This study deals with how geometry, shown in the ratio of human body, is applied to contemporary architecture. There is a law consisting of the form and space in the architecture. By observing this law, the architecture will be in a good order. The geometry is the study dealing with the order and ratio of nature. Throughout the order and proportion system, the geometry can be represented as a systematic and organized form. The geometry including the ratio and order of nature is a fundamental unit, which is unchangeable. I will make a research the ratio and geometric order in the human body and how these characteristics can be applied to the contemporary architecture.
빅데이터 분석에 의한 골프장서비스와 골프장만족에 대한 인식 연구
장보윤(Jang, Bo-Yun),왕용덕(Wang, Yong-Duck) 한국체육과학회 2019 한국체육과학회지 Vol.28 No.2
This study used five years of data from January 1, 2014 to December 31, 2018 to analyze in perception of golf courses through big data. Data was collected and analyzed by blogs, cafes and news articles using Naver and Daum of the search engine. The collection and analysis of the data utilized Textom program and extracted frequency and matrix data. The data collected and analyzed were centred according to the link structure and degree of connection between words using the Ucinet6 program. Visualization was done using the NetDraw function of Ucinet6. Words with visualized key topics and similarities used the CONCOR analysis program to cluster highly correlated groups.
Recovery of Copper from Spent Photovoltaic Ribbon in Solar Module
이진석,장보윤,김준수,안영수,강기환,왕제필,Lee, Jin-Seok,Jang, Bo-Yun,Kim, Joon-Soo,Ahn, Young-Soo,Kang, Gi-Hwan,Wang, Jei-Pil The Korean Institute of Resources Recycling 2013 資源 리싸이클링 Vol.22 No.5
폐 태양광 전지내의 구리리본전극으로부터 구리를 회수하기 위해 불활성 가스분위기하에서 $300-600^{\circ}C$로 열처리 하였다. 구리리본전극의 코팅층은 68.99 wt.%의 납과 31.21 wt.%의 주석으로 구성되어 있는데, 각각의 온도에서 코팅층을 용해한 후 반응도가니에 용해된 코팅층 회수하였다. 열처리 후 회수되어진 코팅층은 ICP-MS (Inductively coupled plasma mass spectrometry)로 성분 분석을 실시하였으며, 온도범위에 관계없이 95 wt.% 이상의 구리순도를 얻을 수 있었다. 구리리본전극 샘플의 횡단면은 SEM (scanning electron microscopy) and EDX (energy dispersive X-ray microscopy)로 관찰하였다. The recovery of copper from spent photovoltaic ribbon was conducted using thermal treatment method at the range of temperature of $300^{\circ}C$ to $600^{\circ}C$ under inert atmosphere. The coating layer consisted of lead of 68.99 wt.% and tin of 31.21 wt.% was melted down at elevated temperatures and was collected on the bottom of crucible. The chemical composition of copper ribbon after thermal treatment was analyzed by ICP-MS (Inductively coupled plasma mass spectrometry) and the purity of copper was found to be obtained up to about 96 wt.% regardless of temperatures. The cross-sectional area of the specimen was also examined by SEM (scanning electron microscopy) and EDX (energy dispersive X-ray microscopy).
황정하,박주석,장보윤,남산,김준수,유순재,Hwang, Jung-Ha,Park, Ju-Seok,Jang, Bo-Yun,Nahm, Sahn,Kim, Joon-Soo,Yu, Soon-Jae 한국전기전자재료학회 2006 전기전자재료학회논문지 Vol.19 No.11
Europium$(Eu^{2+}\;or\;Eu^{3+})$-activated calcium aluminium silicate phosphors were synthesized for the first time and the structures and luminescence characteristics of these phosphors were investigated. The phosphors in this study emitted blue, green, and even red light depending on the starting milterials and annealing conditions for synthesis. In addition, the structure was also changed when the different starting materials were used. When $CaCO_3$ was used as a starting material, tetragonal $Ca_2Al_2SiO_7$ was formed. However, pure green light was emitted when the annealing was conducted in reduced atmosphere and red one was emitted by annealing in air. In the case of $CaSiO_3$ as a starting material, triclinic $CaAl_2Si_2O_8$ was formed and only pure blue emission was observed. Moreover, this blue phosphor exhibited higher intensity than that of commercial YAG:Ce phosphor, which showed the possibility of application on the phosphor for new light source such as a UV-LED.
유도결합 플라즈마와 이중관 반응기를 이용하여 제조한 보론-도핑된 결정질 실리콘 나노입자의 합성
정천영,구정분,장보윤,이진석,김준수,한문희,Jung, Chun-Young,Koo, Jeong-Boon,Jang, Bo-Yun,Lee, Jin-Seok,Kim, Joon-Soo,Han, Moon-Hee 한국전기전자재료학회 2014 전기전자재료학회논문지 Vol.27 No.10
B-doped Si nanoparticles were synthesized by using inductive coupled plasma and specially designed double tube reactor, and their microstructures were investigated. 0~10 sccm of $B_2H_6$ gas was injected during the synthesis of Si nanoparticles from $SiH_4$ gas. Highly crystalline Si nanoparticles were synthesized, and their crystallinity did not change with increase of $B_2H_6$ flow rates. From SEM measurement, their particle sizes were approximately 30 nm regardless of $B_2H_6$ flow rates. From SIMS analysis, almost saturation of B in Si nanoparticles was detected only when 1 sccm of $B_2H_6$ was injected. When $B_2H_6$ flow rate exceeded 5 sccm, higher concentration of B than solubility limit was detected even if any secondary phase was not detected in XRD or HR-TEM results. Due to their high electronic conductivity, those heavily B-doped Si nanoparticles can be a potential candidate for an active material in Li-ion battery anode.
Si 나노입자에서 shell이 전기화학적 특성에 미치는 영향
이정은,구정분,장보윤,김성수,Lee, Jeong-eun,Koo, Jeong-boon,Jang, Bo-yun,Kim, Sung-Soo 한국전기전자재료학회 2016 전기전자재료학회논문지 Vol.29 No.4
Effects of $SiO_x$ or C shells on electrochemical properties of Si nanoparticles were investigated. $SiO_x$ shells with thickness of 10~15 nm were formed on homogeneously crystalline Si nanoparticles. Incase of Si-C nanoparticles, there were 30~40 layers of C with a number of defects. Li-ion batteries were fabricated with the above-mentioned nanoparticles, and their electrochemical properties were measured. Pristine Si shows a high IRC (initial reversible capacity) of 2,517 mAh/g and ICE (initial columbic efficiency) of 87%, but low capacity retention of 22%, respectively. $SiO_x$ shells decreased IRC (1,534 mAh/g) and ICE (54%), while the retention increased up to 65%, which can be explained by irreversible phases such as $LiO_2$ and $Li_2SiO_3$. C shells exhibited no differences in IRC and ICE compared to the pristine Si but an enhanced retention of 54%, which might be from proper defect structures.
실리콘 용탕으로부터 직접 제조된 태양광용 다결정 실리콘의 siC 오염 연구
이예능 ( Ye Neung Lee ),장보윤 ( Bo Yun Jang ),이진석 ( Jin Seok Lee ),김준수 ( Joon Soo Kim ),안영수 ( Young Soo Ahn ),윤우영 ( Woo Young Yoon ) 한국주조공학회 2013 한국주조공학회지 Vol.33 No.2
Silicon (si) wafer was grown by using direct growth from Si melt and contaminations of wafer during the process were invest-tigated In or process BN was coated of all graphite parts including crucible in system to prevent carbon contamination. In addition, coated BN layer enhance the wettability, which ensures the favorable shape of grown wafer by proper flow of si melt in casting mold.As a resurt, polycrystalline wafer with dimension of 156x156mm and thckness of 300±20um was suc-cessively obtained. There were, however, severe contaminations such as BN and SIC on surface of the as-grown wafer.While BN powders were dasily removed by brushing sulface, SiC could not be eliminated As a resurt of BN analysis, C source for was from binder containd in BN slurry.Threfore.to eliminate those C sources, additional flushing process was carried out befre Si was melted By adding 3-times flusing processes, SIC was not deteced on the surface of as-grown Si wafer polycrystalline Si wafer directy grown from Si melt in this study can be applied for the cost-effective Si solar cells.
왕용덕(Wang, Yong-Duck),장보윤(Jang, Bo-Yun) 한국체육과학회 2019 한국체육과학회지 Vol.28 No.2
The present research deduced the following conclusion as a result of survey analysis through a questionnaire with the target of 104 men and 53 women, namely, a total of 157 persons, who are continuously participating in a golf practice range located in Guro-gu of Seoul. In order to study leisure satisfaction according to sa-sang Constitution of golf participants. Leisure satisfaction according to sa-sang constitution of golf participants was significant, and Taeeum-in showed the highest leisure satisfaction, followed by Soeum-in, Soyang-in, and Taeyang-in.
다양한 실리콘 웨이퍼 제조를 위한 와이어 전기 방전가공
문희찬,최선호,박성희,장보윤,김준수,한문희,Moon, Hee-chan,Choi, Sun-ho,Park, Sung-hee,Jang, Bo-yun,Kim, Jun-soo,Han, Moon-hee 한국전기전자재료학회 2017 전기전자재료학회논문지 Vol.30 No.5
Wire electrical discharge machining (WEDM) process was evaluated to slice Silicon (Si) for various applications. Specifically, various Si workpieces with various resistances, such as single and multi crystalline Si bricks and wafers were used. As conventional slicing processes, such as slurry-on or diamond-on wire slicing, are based on mechanical abrasions between Si and abrasive, there is a limitation to decrease the wafer thickness as well as kerf-loss. Especially, when the wafer thickness is less than $150{\mu}m$, wafer breakage increases dramatically during the slicing process. Single crystalline P-type Si bricks and wafers were successively sliced with considerable slicing speed regardless of its growth direction. Also, typical defects, such as microcracks, craters, microholes, and debris, were introduced when Si was sliced by electrical discharge. Also, it was found that defect type is also dependent on resistance of Si. Consequently, this study confirmed the feasibility of slicing single crystalline Si by WEDM.