• Title/Summary/Keyword: Hanyang Park

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A Case of Thymic Carcinoid Tumor (흉선 유암종 1예)

  • Kim, Seong-Min;Kim, Jeong-Mee;Kim, Yeon-Soo;Kim, Byeong-Cheol;Sohn, Jang-Won;Yang, Suck-Chul;Yoon, Ho-Joo;Shin, Dong-Ho;Park, Sung-Soo;Lee, Jung-Hee;Kim, Wan-Seop;Park, Moon-Hyang;Choi, Yo-Won
    • Tuberculosis and Respiratory Diseases
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    • v.44 no.2
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    • pp.425-429
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    • 1997
  • Until 1972, many carcinoid tumors of the thymus were not recognized as distinct lesions and were mistakenly labeled as variants of thymomas. Thymic carcinoid tumors are unusual neoplasms that show different morphological, functional, and behavioral characteristics than those of thymomas. We report a case of a 65-year-old woman with thymic carcinoid tumor. The clinicopathological findings are discussed with a review of the literature.

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Optical Properties and Field Emission of ZnO Nanorods Grown on p-Type Porous Si

  • Park, Taehee;Park, Eunkyung;Ahn, Juwon;Lee, Jungwoo;Lee, Jongtaek;Lee, Sang-Hwa;Kim, Jae-Yong;Yi, Whikun
    • Bulletin of the Korean Chemical Society
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    • v.34 no.6
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    • pp.1779-1782
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    • 2013
  • N-type ZnO nanorods were grown on p-type porous silicon using a chemical bath deposition (CBD) method (p-n diode). The structure and geometry of the device were examined by field-emission scanning electron microscopy (FE-SEM) and X-ray diffraction (XRD) while the optoelectronic properties were investigated by UV/Vis absorption spectrometry as well as photoluminescence and electroluminescence measurements. The field emission (FE) properties of the device were also measured and its turn-on field and current at 6 $V/{\mu}m$ were determined. In principle, the growth of ZnO nanorods on porous siicon for optoelectronic applications is possible.

Validation Checking Mechanisms of Business Processes (비즈니스 프로세스 타당성 검증 기법)

  • Sul, Joo-Young;Park, Jung-Up;Kim, Hak-Soo;Shin, Young-Jae;Jang, Jin-Gun;Park, Chan-Hee;Kim, Te-In;Son, Jin-Hyun
    • Proceedings of the Korean Information Science Society Conference
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    • 2006.10c
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    • pp.1-5
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    • 2006
  • 과거에 비해 최근에 비즈니스 프로세스가 다양해지고 복잡해짐에 따라 비즈니스 프로세스를 디자인할 때 발생할 수 있는 문제점이 점차 증가하고 있다. 그로인해 비즈니스 프로세스 검증의 중요성이 높아지고 있지만 많은 검증 방법이 제안되고 있지 않은 실정이다. 한편, 최근 BPMI에서 주도하는 BPMN(Business Process Modeling Notation)은 비즈니스 프로세스를 위한 표준화된 그래픽 표기법으로써 BPMN을 지원하는 디자인 툴을 이용하면 다양하고 복잡한 프로세스 환경을 일반화된 형태로 디자인하고 분석할 수 있다. 이 논문에서는 이러한 BPMN으로 디자인할 때 발생할 수 있는 문제점들을 효율적으로 검증할 수 있는 몇 가지 검증기법을 제시한다. 이로 인해 비즈니스 프로세스 실행 시 발생할 수 있 문제점들을 효율적으로 검증할 수 있는 몇 가지 검증기법을 제시한다. 이로 인해 비즈니스 프로세스 실행시 발생할 수 있는 에러들을 사전에 검증하여 예기치 못한 큰 비용을 줄일 수 있다.

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LER-to-LER for Omission about Address Field Number of IP over MPLS (MPLS 영역에서의 IP 패킷의 Address 번호의 생략을 위한 LER-to-LER)

  • Park, Sang-Jun;Park, Woo-Chool;Kwak, Jae-Won;Jeong, Soon-Gi;Park, Sang-Rae;Rhee, Byung-Ho
    • Proceedings of the Korea Information Processing Society Conference
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    • 2001.04a
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    • pp.581-584
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    • 2001
  • 오늘날 매우 널리 사용되는 TCP/IP 프로토콜은 많은 보안적 흠을 가지고 있다. 시퀸스 번호를 스푸핑, 소스 번호를 스푸핑, 인증 공격 등 많은 류의 공격이 이런 흠을 통해서 행해지고 있다. 또한 근원적으로 패킷의 TCP헤더 필드의 포트 번호와 IP 헤더 필드의 주소 번호를 분석하여 포트번호와 IP번호를 알아내어 상대방을 공격한다. 이에 상대방으로부터 어드레스 번호를 은닉하거나 생략하여 전송가능하여 상대방이 패킷을 분석하기 어렵게 만들어 TCP/IP 패킷의 정보를 보호하고자 한다. 이에 본 논문은 MPLS 영역에서 IP 패킷의 헤더의 주소 필드 영역을 LER에서 임의의 매핑 변수에 의해 대체함으로써 MPLS 영역에서의 IP 패킷은 IP 주소 번호를 생략할 수 있다. 이에 본 논문에서는 IP 헤더의 Address field를 제거하기위한 LER을 제안하고 LER-to-LER의 메커니즘을 제시한다.

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Spontaneously Resolved Lumbar Artery Injury after Blunt Trauma

  • Nam, Seung Hyuk;Ryu, Je Il;Cheong, Jin Hwan;Park, Ki-Chul;Ro, Sun Kyun
    • Journal of Trauma and Injury
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    • v.33 no.2
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    • pp.124-127
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    • 2020
  • Major bleeding caused by vascular injuries of the abdominal aorta or its branches after blunt trauma often leads to mortality or major morbidity. We report a case that lumbar artery injury following blunt trauma was spontaneously resolved without any surgical or interventional treatment. Lumbar artery injury after blunt trauma could be treated conservatively without surgical or interventional treatment in a selected case. When an aortic or its branch injury was suspicious, diagnostic angiograms in the setting of interventional treatment may be helpful to decide an appropriate treatment modality.

Fatal Clinical Course of Probable Invasive Pulmonary Aspergillosis with Influenza B Infection in an Immunocompetent Patient

  • Park, Dong Won;Yhi, Ji Young;Koo, Gunwoo;Jung, Sung Jun;Kwak, Hyun Jung;Moon, Ji-Yong;Kim, Sang-Heon;Kim, Tae Hyung;Sohn, Jang Won;Shin, Dong Ho;Park, Sung Soo;Yoon, Ho Joo
    • Tuberculosis and Respiratory Diseases
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    • v.77 no.3
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    • pp.141-144
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    • 2014
  • Invasive pulmonary aspergillosis (IPA) is rarely reported in patients who have normal immune function. Recently, IPA risk was reported in nonimmunocompromised hosts, such as patients with chronic obstructive pulmonary disease and critically ill patients in intensive care units. Moreover, influenza infection is also believed to be associated with IPA among immunocompetent patients. However, most reports on IPA with influenza A infection, including pandemic influenza H1N1, and IPA associated with influenza B infection were scarcely reported. Here, we report probable IPA with a fatal clinical course in an immunocompetent patient with influenza B infection. We demonstrate IPA as a possible complication in immunocompetent patients with influenza B infection. Early clinical suspicion of IPA and timely antifungal therapy are required for better outcomes in such cases.