심장압전에 대한 Seldinger 방법을 이용한 심낭배액술 -2례 보고-

김종원,박서완,김병준,Kim, Jong-Won,Park, Seo-Wan,Kim, Byeong-Jun 대한흉부심장혈관외과학회 1996 Journal of Chest Surgery (J Chest Surg) Vol.29 No.10

총 대퇴동맥 거대동맥류는 드문 질환이며, 수술 시기를 놓치면 하지 절단을 초래하거나 사망할수도 있기 때문에 적절한 시기에 반드시 수술적 치료를 하여야 한다. 환자는 72세 남자로 입원 20일 전부터 생긴, 좌측 서혜부 박동성 종괴를 주소로 입원하였다 전산화 단층 촬영과 디 지탈 감쇄조영술로 총 대퇴동맥 거대동맥류를 진단하고 응급수술을 시행하였다. 수술은 동맥류를 절제하고 표재성 및 심부 대퇴동맥을 PTFE (Gore-tex) 인조혈관을 이용하여 연결하였다. 동맥류 원인은 병리 조직검사상 동맥 경화성으로 밝혀졌다. Cardiac tamponade Is an acute, life-threatening emergency, requiring immediate decompression by a safe and simple method. The most effective method of drainage has been controversial. We experienced successful outcome for the treatment of cardiac tamponade with drainage using the Seldinger technique. The causes of the cardiac tamponade were hemopericardium after mitral and aortic valve replacement and malignant pericardial effusion due to primary lung cancer. They were treated with emergency rainage by the Seldinger technique without procedure-related complications. We believe that this technique is simple, safe for the treatment of cardiac tamponade.

융합형 소프트웨어-정의 인프라로의 혁신이란?

김종원,Kim, Jong-Won 한국통신학회 2016 정보와 통신 Vol.33 No.12

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.

신경성 식욕부진 유사 환자 1례에 대한 증례보고

김종원,심재철,김민상,오병열,이지영,조현경,최영,김윤식,설인찬,유병찬,Kim, Jong-Won,Shim, Jae-Chul,Kim, Min-Sang,Oh, Byeong-Yeol,Lee, Ji- Young,Jo, Hyun-Kyung,Chai, Young,Kim, Yoon-Sik,Seol, In-Chan,Yu, Byeong-Chan 대한한방내과학회 2004 大韓韓方內科學會誌 Vol.25 No.3

Anorexia nervosa is a serious, often chronic, and life-threatening eating disorder defined by a refusal to maintain minimal body weight (within 15% of an individual s normal weight). Other essential features of this disorder include an intense fear of gaining weight, a distorted body image, and amenorrhea(absence of at least three consecutive menstrual cycles when they are otherwise expected to occur). With anorexia nervosa, the nails and hair become brittle, and the skin may become dry and yellow. In addition to depression, hypothermia, lanugo, nausea, vomiting, anxiety and dehydration from sweating can appear. Starvation, weight loss, and related medical complications are quite serious and can result in death. Recently one patient was admitted with anorexia nervosa-like symptoms. The patient is a 18-year-old girl with complaints of weight loss, amenorrhea, anorexia, nausea, vomiting, tremor, and sweating. After treatment through oriental medicine for 2 weeks, most of the symptoms improved. Therefore, this application of oriental medicine is reported with a plea for further investigation.

Costen ' s Syndromes에 관한 임상적 고찰

김종원,김기우 ( Jong Won Kim,Kee Woo Kim ) 대한예방치과·구강보건학회 1968 大韓口腔保健學會誌 Vol.2 No.2

뇌Wavelet 방법론을 이용한 수면뇌파분석 고찰

김종원,Kim, Jong-Won 대한수면의학회 2012 수면·정신생리 Vol.19 No.1

목 적 : 본 연구는 뇌파를 정량분석하는 새로운 방법의 하나인 wavelet 방법을 소개하고 아울러 그것이 임상 수면뇌파 분석에 유용하다는 것을 검증하기 위해 시도되었다. 방 법 : Wavelet 방법을 검증하기 위해 수학적으로 만들어진 인공뇌파들과, 입면주기 임상 뇌파 샘플 하나와 GoNoGo 프레임으로 측정된 ERP 샘플 하나가 사용되었다. Wavelet방법론으로 계산된 time-frequency 파워 스펙트럼과 위상 동조화 정도가 Fourier 및 moving windows 방법으로 계산된 스펙트럼과 coherence 결과들과 비교 분석되었다. 결 과 : Wavelet 방법은 인공뇌파에 인위적으로 포함된 파형의 특징들을 성공적으로 분해해내었다. 임상뇌파 샘플로 한 검증에서도 그 유효성이 확인되었는데, 입면주기 전후로 보이는 스펙트럼의 변화를 유의미하게 확인할 수 있었으며, 표적(target) 및 배경(background) ERP 파형의 특징을 시간-주파수 도표(time-frequency plot)으로 잘 표현하였다. 결 론 : 이러한 결과를 미루어볼 때, wavelet 방법은 임상 뇌파를 정량 분석함에 있어서, Fourier 방법을 효과적으로 대체 혹은 보완함을 알 수 있었다. 특히, 뇌파가 수초에서 수백초의 짧은 시간단위에서 급격한 변화를 보이는 입면주기뇌파와 ERP 분석에 wavelet 방법의 적합성이 크다고 볼 수 있다. Objective: Among various methods developed to quantitatively explore electroencephalograms (EEG), we focused on a wavelet method that was known to yield robust results under nonstationary conditions. The aim of this study was thus to introduce the wavelet method and demonstrate its potential use in clinical sleep studies. Method: This study involved artificial EEG specifically designed to validate the wavelet method. The method was performed to obtain time-dependent spectral power and phase angles of the signal. Synchrony of multichannel EEG was analyzed by an order parameter of the instantaneous phase. The standard methods, such as Fourier transformation and coherence, were also performed and compared with the wavelet method. The method was further validated with clinical EEG and ERP samples available as pilot studies at academic sleep centers. Result: The time-frequency plot and phase synchrony level obtained by the wavelet method clearly showed dynamic changes in the EEG waveforms artificially fabricated. When applied to clinical samples, the method successfully detected changes in spectral power across the sleep onset period and identified differences between the target and background ERP. Conclusion: Our results suggest that the wavelet method could be an alternative and/or complementary tool to the conventional Fourier method in quantifying and identifying EEG and ERP biomarkers robustly, especially when the signals were nonstationary in a short time scale (1-100 seconds).

HomePNA 2.0 MAC Controller 회로의 설계 및 구현

김종원,김대영,Kim, Jong-Won,Kim, Dae-Young 한국통신학회 2006 韓國通信學會論文誌 Vol.31 No.1a

Home Phoneline Networking Alliance(HomePNA) 2.0 기술은 기존의 댁내 전화 선로를 사용하여 홈 네트워크를 구축하는 기술로서, 4-32 Mbps의 고속 데이터 전송 속도를 제공한다. 이러한 HomePNA 2.0의 Medium Access Control(MAC) 프로토콜은 IEEE 802.3 Carrier Sense Multiple Access with Collision Detection(CSMA/CD) 방식을 사용하면서, Quality of Service(QoS) 알고리즘을 제공하고, 충돌 해결 알고리즘은 Distributed Fair Priority Queuing(DFPQ) 알고리즘을 사용한다. 본 논문은 HomePNA 2.0 MAC 프로토콜의 성능 분석 결과와 HomePNA 2.0 MAC Controller의 요구 사항을 기술하고, 우리가 설계한 HomePNA 2.0 MAC Controller 회로의 구조를 제시하며, HomePNA 2.0 MAC Controller를 구성하는 각 블록의 모의 실험 결과를 제공하고, 우리가 구현한 HomePNA 2.0 Transceiver 칩을 제시한다. 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.

수면연구를 위한 액티그라피 정량분석 방법론

김종원,Kim, Jong Won 대한수면의학회 2016 수면·정신생리 Vol.23 No.1

Since its development in the early 70s, actigraphy has been widely used in sleep research and clinical sleep medicine as an assessment tool of sleep and sleep-wake cycles. The validation and reliability of actigraphic measures have been reasonably examined in healthy normal individuals with good sleep patterns. Recent literature suggests that the use of actigraphy could be further extended to monitor insomnia and circadian sleep-wake disturbances, and detect sleep changes associated with drug treatments and non-pharmacologic interventions, although it is generally recommended to use complementary assessments such as sleep diaries and overnight polysomnography when possible. The development of actigraphy includes its improved hardware sensors for better detection of movements and advanced algorithms to score sleep and wake epochs. In this paper, we briefly review the quantitative analysis methods of actigraphy and its potential applications in sleep research.

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

토양경작법의 사례 분석을 통한 적용방안 개선

김종원,최상일,양재규,김보경,Kim, Jong-Won,Choi, Sang-Il,Yang, Jae-Kyu,Kim, Bo-Kyung 한국지하수토양환경학회 2010 지하수토양환경 Vol.15 No.1

Considering six screen matrix to select an optimum remediation method for the Kunsan military base contaminated with petroleum oil, the following order was obtained: landfarming > biopile > soil washing > thermal desorption = incineration. When the landfarming method was applied for the remediation of 2,250 $m^3$ soil contaminated with petroleum oil ranging from 500 to 2,404 mg/kg as TPH, contamination level decreased below target concentration 450 mg/kg after 20~42 days depending on the initial contamination. From the evaluation of case studies of landfarming, it is suggested that ratty-truss or single-arch structure is suitable in the landfarming plant for the treatment of large-scale contaminated soil requiring long period of remediation. But, vinyl-house structure is suitable in the landfarming plant for the treatment of small-scale contaminated soil requiring short period of remediation. Therefore vinyl-house structure is recommended in the remediation of contaminated soil less than 5,000 $m^3$ requiring within 1 year of remediation period but ratty-truss or single-arch structure is recommended for the remediation of contaminated soil more than 5,000 $m^3$.