HomePNA 2.0 MAC Controller 회로의 설계 및 구현

김종원,김대영,Kim, Jong-Won,Kim, Dae-Young 한국통신학회 2006 한국통신학회논문지 Vol.31 No.1A

The Home Phoneline Networking Alliance(HomePNA) 2.0 technology can establish a home network using existing in-home phone lines, which provides a channel rate of 4-32 Mbps. HomePNA 2.0 Medium Access Control(MAC) protocol adopts an IEEE 802.3 Carrier Sense Multiple Access with Collision Detection(CSMA/CD) access method, Quality of Service(QoS) algorithm, and Distributed Fair Priority Queuing(DFPQ) collision resolution algorithm. In this paper, we describe some performance analysis results of HomePNA 2.0 MAC protocol and the requirements of HomePNA 2.0 MAC controller. Then, we propose the architecture of HomePNA 2.0 MAC controller circuit, show the simulation result of each block included in HomePNA 2.0 MAC controller, and present the HomePNA 2.0 transceiver chip that we have implemented.

주택가격(住宅價格)에 내재(內在)된 대기질(大氣質)의 가격측정(價格測定) - 공간계량경제모형(空間計量經濟模型)을 이용한 접근(接近) -

김종원,Kim, Jong-Won 한국자원경제학회 1997 資源經濟學會誌 Vol.7 No.1

본 연구는 기존의 특성가격기법(特性價格技法)(hedonic price technique)에 공간(空間)개념을 도입한 계량경제모형을 이용하여 분석하였다. 이 공간시차모형은 기존의 모형과 달리 특성변수의 변화에 따른 직(直) 간접효과(間接效果)를 동시에 포착할 수 있는 장점을 가지고 있다. 또한 공간시차모형의 회귀진단 및 가설검정 결과는 공간시차모형이 적합한 것으로 나타났다. 이 경우 공간시차를 고려하지 않은 OLS 회귀분석 결과의 계수들은 편기추정(biased)된 동시에 효율적(efficiency)이지 못하다는 것이다. 회귀분석 결과는 주택에 자본화된 대기오염에 대한 잠재가격(潛在價格)(marginal implicit price)은 주택평균가격의 약 1.5% 정도인 것으로 추정된다.

사상의학(四象醫學)의 장부론(臟腑論)에 대(對)한 고찰(考察)

김종원,고병희,송일병,Kim, Jong-Won,Go, Byeong-Hui,Song, Il-Byeong 사상체질의학회 1990 사상체질의학회지 Vol.2 No.1

국산육가공 제품의 이화학적 성질 및 조직특성에 관한 연구

김종원,이성기,안병윤,이유방 ( Jong Won Kim,Sung Kee Lee,Byung Yoon Ahn,Yu Bang Lee ) 한국축산학회 1981 한국축산학회지 Vol.23 No.1

Twenty-four processed meat items locally produced by 6 different domestic manufactures from the beginning of June to the middle of August, 1980 were tested for their physicochemical and textural characteristics. The results obtained were summarized as follows; 1. The moisture content of fish sausage was between 59.0 - 66.1%, crude protein 9.6 - 11.7%, crude fat 2.6 - 15.8% and crude ash 1.7 - 3.2%. The crude protein and crude fat contents were lower than the desirable level and the crude fat content also showed wide variations among manufactures. 2. The moisture content of meat sausage was between 51.3 and 60.8%; crude protein 13.7 - 16.2%, crude fat 17.5 - 28.6%, crude ash 1.9 - 2.7%. The ratio of protein to water was similar to that of the developed countries but fat content was relatively low. 3. The moisture content of ham was about 70%; crude protein 16.1 - 24.4%, crude fat 2.8 - 10.9%, and crude ash 2.9 - 4.5%. When compared to the products of foreign countries, the domestic hams were lower in fat but higher in moisture content. 4. The mean pH values of all products were between 5.9 and 6.4. 5. The nitrite content of all products was between 10 and 40 ppm. None of the products was found to contain more than 70 ppm. 6. Food regulations specifying the chemical composition of processed meats take effect for the meat products, but not for the fish sausages, resulting in the wide variations in the chemical composition of the fish sausage. 7. Warner-Bratzler shear press value of meat sausage was 0.23±0.1 (Kg/wt); fish sausage 0.35±0.1 (Kg/wt) and ham 1.69±0.5 (Kg/wt). W/B shear press value of ham was five times greater than that of sausage. 8. Hardness of fish sausage was between 2.67 and 5.98 (Kg/wt); ham 5.1 - 10.8 (Kg/wt). Hardness showed wide variations among 6 different domestic manufactures. 9. Springiness was relatively uniform and cohesiveness of sausage was larger than that of ham.

고창 운곡습지의 식물군락 다양성과 분포 특성

김종원,이승은,류태복,Kim, Jong-won,Lee, Seung-eun,Ryu, Tae-bok 한국하천호수학회 2017 생태와 환경 Vol.50 No.3

The Ramsar protected area in Ungok wetland, which has been designated since 2011, was described by syntaxonomy and synchorology. Phytocoenon was identified and named by a traditional method of the $Z{\ddot{u}}rich$-Montpellier School and Code of Phytosociological Nomenclature. Habitat-based vegetation classification has identified into twelve syntaxa consisting of 88 taxa in seven vegetation types: Juncus effusus var. decipiens-Salix koreensis community, Caricis-Salicetum subfragilis, Galium spurium var. echinospermon-Phragmites japonica community, Phragmitetum australis, Scirpetum fluviatilis, Leersia japonica-Typha angustifolia community, Juncus diastrophanthus-Juncus effusus var. decipiens community, Leersicetum japonicae, Nymphoido indicae-Trapetum japonicae (typicum, marsiletosum quadrifoliae subass. nova hoc loco, variante Euryale ferox), Nelumbo nucifera community, Utricularia tenuicaulis community, Potamogetonetum crispi. Actual vegetation map was made by using topographical map of scale 1 : 5,000. Habitat-based management on the Ungok wetland vegetation was required, in which there are composed of two major areas such as the back-swamp vegetation and the limnetic vegetation zone.

SDN/NFV/Cloud를 통합한 소프트웨어-정의 인프라

김종원,Kim, Jong-Won 한국통신학회 2015 정보와 통신 Vol.32 No.7

인터넷의 폭발적인 팽창에 따른 부작용들을 근본적으로 해소하고자 2000년대 후반부터 시작된 미래인터넷(Future Internet)에 관한 연구들이 최근까지 지속적으로 진행 중이다. 또한 새롭게 대두된 융합형(convergent) ICT 자원구성에 맞춘 지속적인 사용자 주도의 인프라 혁신 전략에 기반하여, SDN/NFV/Cloud 통합으로 형성하는 소프트웨어-정의 인프라(Software-Defined Infrastructure: SDI)를 개방형으로 구축하는 흐름이 있다. 즉 구축/운용의 중심이 하드웨어에서 소프트웨어 중심으로 최근 급속하게 전환되는 큰 변화가 ICT 인프라차원에서 본격화하고 있다. 즉 지금까지 논의되었던 여러 미래 인터넷 이슈들을 스마트한 초연결과 사용자 중심 서비스의 관점에서 바라보면서 미래형 ICT 인프라의 바람직한 구축을 서서히 가시화하고 있다. 따라서 본 논문에서는 초연결에 기반하여 값싸고 신속하게 서비스를 실증하기 위해 DevOps(Developers & Operators: 개발/운영 병행체제) 방법론으로 소프트웨어-정의 인프라로 체질을 바꿔가는 개방형 혁신을 살펴본다.

유연생산시스템의 계층구조적 실시간 운용제어 및 모니터링에 관한 연구

김종원,Kim, Jong-Won 한국정밀공학회 1992 한국정밀공학회지 Vol. No.

This paper presents a hierarchical real-time operation control and monitoring scheme of the FMS/CIM center which has been implemented at the Automation and Systems Research Institute of Seoul National University. The hierarchical structure of the whole scheme consists of three lavers. The upper layer is in charge of on-line scheduling, computer network control, shop-floor monitoring and command generation for AGV dispatching, machining, assembly, inspection, set-up, etc. The middle layer has six modules, which are installed in the FMS host computer with the upper layer and run on the multi-tasking basis. Each module is connected to one of six cell controllers distributed in the FMS model plant and transfers operation command down to each cell controller through the Ethernet/TCP-IP local area network. The lower layer is comprised of six cell control software modules for machining cell, assembly cell, inspection cell, set-up stations. AS/RS and AGV. Each cell controller reports the status of the manufacturing facilites to the middle layer as well as ecxecuting the appropriate sequence control of the manufacturing processes.

월남전 참전 노인에서 한글판 외상후 스트레스 장애 체크리스트-5의 정신측정학적 특성

김종원,정혜경,최진희,소형석,강석훈,김동수,문정윤,김태용,Kim, Jong Won,Chung, Hae Gyung,Choi, Jin Hee,So, Hyung Seok,Kang, Suk-Hoon,Kim, Dong Soo,Moon, Jung Yoon,Kim, Tae Yong 대한불안의학회 2017 대한불안의학회지 Vol.13 No.2

Objective : The PTSD Checklist (PCL) is a self-report screen for posttraumatic stress disorder (PTSD) that can be scored for both diagnostic assessment and symptom severity measurement. The most recent revision of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5) contains a number of changes to the definition of PTSD, and the aim of this study was to assess the psychometric properties of the Korean version of the PCL for the DSM-5 (PCL-5-K). Methods : The participants were 204 Korean veterans of the Vietnam War who completed the PCL-5-K, the Mini Mental Status Examination (MMSE), PTSD module of Structured Clinical Interview for DSM-5, Research Version (SCID5-RV PTSD module), Korean version of Impact of Event Scale-Revised (IES-R-K) and Combat Exposure Scale (CES-K). Results : The PCL-5-K demonstrated good internal consistency (${\alpha}=0.972$) and test-retest reliability (r=0.96); the suggested cut-off score for PTSD diagnosis was ${\geq}37$ with 0.88 sensitivity and 0.96 specificity. The PCL-5-K scale correlated highly with the IES-R-K and CES-K. Factor analysis identified only one factor. Conclusion : Among elderly Korean veterans of the Vietnam War, the PCL-5-K demonstrated similar psychometric qualities to those of both the original PCL and subsequent versions. It is expected that the PCL-5-K will be a useful PTSD screening tool.

FUNCTIONAL RECONSTRUCTION OF MANDIBULAR DEFECTS WITH FREE BONE GRAFT

김종원,남일우,김명진,정필훈,서병무,유준영,남기원,송민석,Kim, Jong-Won,Nam, II-Woo,Kim, Myung-Jin,Choung, Pill-Hoon,Seo, Byung-Moo,You, Jun-Young,Nam, Ki-Weon,Song, Min-Seok Korean Association of Maxillofacial Plastic and Re 1993 Maxillofacial Plastic Reconstructive Surgery Vol.15 No.4

양성 종양, 악성 종양, 감염, 외상 등에 의한 하악골 결손은 중대한 심미적, 생물학적 결과를 일으킨다. 재건술의 일차적 목적은 완전한 기능 회복이며 이는 이차적으로 심미적 변형의 정상화를 유도한다. 저자들은 1981년에서 1990년까지 서울대학교 치과대학 구강 악안면외과에 내원하여 하악골 재건술을 시행받고 6개월 이상 추적조사가 가능한 61증례의 임상적 자료 및 방사선 검사를 통해 부위별 임상적 성공률을 조사하였다. 본 임상 논문의 목적은 하악골 결손부위와 부위에 따른 유리골 이식의 성공률을 연구하는데 그 의의를 두겠다. 유리골 이식의 임상적 연구를 요약해 보면 유리 자가골 이식의 대부분은 장골이었고 망상피질골이었다. 6개월 이상 추적조사가 가능한 61명의 환자에 있어 전체적 성공률은 80.3% 였다. 강선고정과 구외접근법이 다른 방법보다 그 예후에 있어 훨씬 더 좋은 결과를 나타냈고 다른 부위보다 하악 정중부위가 그 예후에 있어 훨씬 나쁜 결과를 보였다. Mandibular discontinuity defect due to benign tumor, malignant tumor, infection, or truma results in major esthetic and biologic compromise. The primary goal of reconstruction is full restitution of function, which secondarily lead to normalization of the cosmetic deformity. The authors make a clinical study of 61 consecutive bone graft cases for mandibular reconstruction of discontinuity defect which were studied retrospectively using clinical data and radiographic findings. The cases were reviewed to evaluate the clinical success in the period from 1981 to 1990 in the Dept. of Oral & maxillofacial Surgery, Seoul National University Hospital. The criteria of the success in bone graft, are no residual infection, graft in with maintain its integrity, and remain over a half of its original size of graft in the radiographic features. The purpose of this clinical survey is to study of the mandibular discontinuity defects and success rate of free bone graft in mandibular defects. To summarize the clinical study of free bone graft, the main type of autogenous bone graft is iliac bone and corticocancellous type. Overall success rate is 80.3% in 61 followup cases over 6 months. Wire fixation and Extraoral approach has realtively better prognosis than other methods. It showed relatively poor prognosis in symphysis defects than other recipient site.

가족력을 동반한 다발성 치성각화낭종

김종원,김유진,변영남,김종철,김명진,이종호,명훈,Kim, Jong-Won,Kim, Yu-Jin,Pyun, Yung-Nam,Kim, Jong-Chull,Kim, Myung-Jin,Lee, Jong-Ho,Myoung, Hoon 대한악안면성형재건외과학회 1999 Maxillofacial Plastic Reconstructive Surgery Vol.21 No.1

A family is presented in which multiple odontogenic keratocysts have been expressed. 3 members of the two generations of family with features of multiple keratocysts, suspected basal cell nevus syndrome have been investigated. The proband, 19-year-old woman and her mother, and her brother suffered from these cysts and two female patients' disease have been recurred multiply though careful treatments. Close attention to the family and routine follow up will alert the clinician to its recurrences and genetic counseling and serial screening for the development of other symptoms, that is malignant skin carcinoma etc.