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지상파 DMB용 Outer 인코더/리코더의 설계 및 구현
원지연,이재흥,김건,Won, Ji-Yeon,Lee, Jae-Heung,Kim, Gun 한국정보처리학회 2004 정보처리학회논문지 A Vol.11 No.1
In this paper, we designed the outer encoder/decoder for the terrestrial DMB that is an advanced digital broadcasting standard, implemented, and verified by using ALTERA FPGA. In the encoder part, it was created the parity bytes (16 bytes) from the input packet (188by1e) of MPEG-2 TS and the encoded data was distributed output by the convolutional interleaver for Preventing burst errors. In the decoder part, It was proposed the algorithm that detects synchronous character suitable to DMB in transmitted data from the encoder. The circuit complexity in RS decoder was reduced by applying a modified Euclid's algorithm. This system has a capability to correct error of the maximum 8 bytes in a packet. After the outer encoder/decoder algorithm was verified by using C language, described in VHDL and implemented in the ALTERA FPGA chips. 본 논문에서는 차세대 디지털 방송규격인 지상파 DM용 Outer 인코더/디코더를 설계하고 ALTERA의 FPGA를 이용하여 구현하고 검증하였다. 인코더 부분에서는 입력되는 MPEG-2 TS 패킷(188바이트)으로부터 비트 시리얼 알고리즘을 이용한 RS(Reed-Solomon) 인코더를 이용해 패리티 바이트(16바이트)를 생성하고 군집에러를 효과적으로 수정하기 위해 콘볼루션 인터리버를 구현해 데이터를 분산 출력 시켰다. 디코더 부분에서는 인코더에서 송신된 데이터에서 DMB에 적합한 동기 바이트 검출하는 알고리즘을 제시하였으며, RS디코더는 수정된 유클리드 알고리즘을 적용하여 회로구성을 간략화 하였다. 본 시스템은 하나의 패킷에서 최대 8바이트의 에러를 수정할 수 있고, C언어를 이용하여 알고리즘을 검증하고 VHDL로 작성하였으며, FPGA 칩 상에서 회로를 검증하였다.
정서연(Jeong, Seo-Yeon),정세정(Jung, Se-Jung),원지연(Won, Ji-Yeon) 대한건축학회 2023 대한건축학회 학술발표대회 논문집 Vol.43 No.2
In the Middle Ages, cathedrals were constructed using the principles of number and geometry, based on the religious view that the world was formed by God. This paper aims to find out how the design principles of Gothic cathedrals were applied to domestic cathedral architecture when the architectural style of Gothic cathedrals was introduced in Korea in the 19C. The research method aims to examine the design principles of Gothic cathedrals through prior research and analyze how these principles were applied to the spatial composition, geometric proportion, and symbolic number of domestic cathedrals. As a result, it is judged that the design principles of Gothic cathedrals were not applied, but it seems to follow the Gothic style in many areas, such as spatial composition and decorative elements.
일본의 노인복지서비스에 관한 고찰 -개호보험 도입배경을 중심으로-
정기룡 ( Chung Ki-ryong ),원지연 ( Won Ji-yeon ) 한국일본근대학회 2018 일본근대학연구 Vol.0 No.59
이 연구의 목적은 먼저, 일본의 노인복지서비스의 변천과정 분석을 통해 개호보험의 도입배경을 분명히 하는 것에 있다. 또한 개호보험 실시이전의 재가복지서비스 및 시설복지서비스의 내용분석에 기초하여 행정조치의 의미를 재고해보고자 하였다. 따라서 본고에서는 일본 고령자대책의 하나인 노인복지서비스의 전개과정(1963년부터 2000년까지)을 개관하게 되었다. 연구결과에서, 개호보험의 도입(2000년) 이전까지는 정부대책과 지침에 입각해 노인복지서비스가 제공되어 온 것을 재확인 하였다. 또한 노인복지서비스를 실현하기 위해서는 지자체는 물론이고 복지서비스 관련 민영기업도 각각의 역할을 수행하는 시스템으로 운영되어 왔다. 그러나 인구고령화가 예상보다 빠르게 진행되는 동시에 장기요양에 필요한 비용이 급증하였기에 행정조치에 의한 노인복지서비스는 한계에 달하게 된 것이다. 이러한 배경 하에서 장기요양에 필요한 재원확보와 효율적인 복지서비스를 제공하기 위해 개호보험과 같은 사회보험제도를 도입하게 되었다. 이와 같은 변화는 21세기에 접어들면서 사회보장제도가 방향을 전환한 것이라고 하겠다. 한국에서도 최근 고형화비율(2017년 14%)이 급속히 높아지고 있다. 이와 관련하여 개호보험 시행 이후의 논쟁 및 한·일 비교는 후속연구의 과제로 삼고자 한다. The purpose of this study is to clarify the introduction background of long-term care insurance by analyzing the phenomenon of elderly welfare services in Japan. In addition, this paper sought to reconsider the meaning of administrative countermeasures based on the analysis of the contents of Home Based Service and Welfare Facility Services before the implementation of long-term care insurance. Therefore, this paper outlines the development process of elderly welfare services (from 1963 to 2000) based on countermeasures for elderly people in Japan. To summarize the results, the elderly welfare service was provided based on government measures and guidelines until the implementation of long-term care insurance (2000). In order to realize the elderly welfare services, private companies as well as local governments related to welfare services were operated as systems that fulfill their respective roles. However, both situation that the population aged more rapidly than expected and the cost of nursing care increased rapidly led to the introduction of long-term care insurance. Toward the 21st century, aged society countermeasures have changed direction. In Korea, the rate of aging (14% in 2017) is rising rapidly. In this regard, the debate on long-term care insurance and comparison between Korea and Japan is supposed to be the subject of further research.
고분자 복제 템플릿 방법을 이용하여 제조된 다공성 탄화규소의 미세구조 특성
이윤주,김수룡,김영희,신동근,원지연,권우택,Lee, Yoon Joo,Kim, Soo Ryong,Kim, Young Hee,Shin, Dong Geun,Won, Ji Yeon,Kwon, Woo Teck 한국세라믹학회 2014 한국세라믹학회지 Vol.51 No.6
Foam type porous silicon carbide ceramics were fabricated by a polymer replica method using polyurethane foam, carbon black, phenol resin, and silicon powder as raw materials. The influence of the C/Si mole ratio of the ceramic slurry and heat treatment temperature on the porous silicon carbide microstructure was investigated. To characterize the microstructure of porous silicon carbide ceramics, BET, bulk density, X-ray Powder Diffraction (XRD), and Scanning Electron Microscope (SEM) analyses were employed. The results revealed that the surface area of the porous silicon carbide ceramics decreases with increased heat treatment temperature and carbon content at the $2^{nd}$ heat treatment stage. The addition of carbon to the ceramic slurry, which was composed of phenol resin and silicon powder, enhanced the direct carbonization reaction of silicon. This is ascribed to a consequent decrease of the wetting angles of carbon to silicon with increasing heat treatment temperature.
습식분쇄공정에서 액상매체가 실리콘 분쇄 및 산화특성에 미치는 영향
권우택,김수룡,김영희,이윤주,신동근,원지연,오세천,Kwon, Woo Teck,Kim, Soo Ryong,Kim, Young Hee,Lee, Yoon Joo,Shin, Dong Geun,Won, Ji Yeon,Oh, Sea Cheon 한국세라믹학회 2014 한국세라믹학회지 Vol.51 No.2
The influence of a liquid medium duringa wet-milling process in the grinding and oxidation of silicon powder was investigated. Distilled water, dehydrated ethanol and diethylene glycol were used as the liquid media. The applied grinding times were 0.5, 3, and 12 h. Ground silicon powder samples were characterized by means of aparticle size analysis, scanning electron microscopy(SEM), x-ray powder diffraction (XRD), FT-IR spectroscopy and by a chemical composition analysis. From the results of the characterization process, we found that diethylene glycol is the most efficient liquid medium when silicon powder is ground using a wet-milling process. The FT-IR results show that the Si-O band intensity in an unground silicon powder is quite strongbecause oxygen becomes incorporated with silicon to form $SiO_2$ in air. By applying deionized water as a liquid medium for the grinding of silicon, the $SiO_2$ content increased from 4.12% to 31.7%. However, in the cases of dehydrated ethanol and diethylene glycol, it was found that the $SiO_2$ contents after grinding only changed insignificantly, from 4.12% to 5.91% and 5.28%, respectively.
임신중 다발성 화농성 육아종 발생을 보인 색소혈관 모반증 Type Ia
문용주 ( Mun Yong Ju ),장수정 ( Jang Su Jeong ),최용호 ( Choe Yong Ho ),원지연 ( Won Ji Yeon ),정기동 ( Jeong Gi Dong ) 대한피부과학회 2003 대한피부과학회지 Vol.41 No.9
Phakomatosis pigmentovascularis(PPV) was first described in 1947 as a distinctive association of vascular and pigmentary nevi by Ota et al. Hasegawa et al subclassi-fied the disorder into eight types and type I a is characterized by the coexistence of nev
폼 형태의 다공성 탄화규소 지지체 표면 위에 ZSM-5 합성
정은진 ( Eun Jin Jung ),이윤주 ( Yoon Joo Lee ),원지연 ( Ji Yeon Won ),김영희 ( Young Hee Kim ),김수룡 ( Soo Ryong Kim ),신동근 ( Dong Geun Shin ),이현재 ( Hyun Jae Lee ),권우택 ( Woo Teck Kwon ) 한국화학공학회 2015 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.53 No.4
ZSM-5 crystals grew by hydrothermal synthesis method on the surface of foam type porous silicon carbide ceramics which fabricated by polymer replica method. Oxide layer was developed on the surface of the porous silicon carbide ceramics to induce growth of ZSM-5 from the surface. In this study, hydrothermal synthesis was carried out for 7 h at 150 ℃ using TEOS, Al(NO3)·9H2O and TPAOH as raw materials in the presence of the porous silicon carbide ceramics. X-ray Powder Diffraction (XRD) and Scanning Electron Microscope (SEM) analyses were confirmed 1~3 μm sized ZSM-5 crystals have grown on the surface of porous silicon carbide ceramics. BET data shows that small pores about 10Å size drastically enhanced and surface area increased from 0.83 ㎡/g to 30.75 ㎡/g after ZSM-5 synthesis on the surface of foam type porous silicon carbide ceramics.