• 제목/요약/키워드: Hanyang Park

검색결과 5,072건 처리시간 0.039초

Development of Discriminant Model of PIH Pregnant using Decision Tree

  • Park, Young-Sun;Choi, Hang-Suk;Cha, Kyung-Joon;Park, Moon-Il
    • Journal of the Korean Data and Information Science Society
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    • 제16권1호
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    • pp.41-50
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    • 2005
  • The various methods have been studied to develop discriminant model for pregnancy induced hypertension(PIH) as high risk pregnant. In this study, we adapt the approximate entropy which is the non-linear chaotic measuring method. Then, we develop a system to discriminant PIH pregnant using QUEST with S-PLUS.

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가슴샘 카르시노이드종양의 세침흡인 세포소견 - 1예 보고 - (Pine Needle Aspiration Cytology of a Thymic Carcinoid Tumor - A Case Report -)

  • 오영하;장기석;송영수;이철범;박충기;박문향;박용욱
    • 대한세포병리학회지
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    • 제16권1호
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    • pp.41-46
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    • 2005
  • Carcinoid tumors of the thymus are vanishingly rare, and the characteristic cytologic findings of this condition have never before been reported in Korea. Recently, we encountered a 58-year-old woman who had been suffering from general weakness and weight loss for several months. Radiological imaging revealed a large anterior mediastinal mass. A fine needle aspiration biopsy (FNAB) of the mass showed predominantly scattered single cells, as well as some loose clusters of small cells with scanty cytoplasm. Some of these small cells exhibited plasmacytoid features, with moderately granular cytoplasm. We also discuss the cytological differential diagnosis between thymic carcinoid and other mediastinal tumors.

Haar-like 특징을 이용한 유해영상 분류 (An adult image classification using Haar-like feature)

  • 박민수;김용민;박찬우;박기태;문영식
    • 한국정보처리학회:학술대회논문집
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    • 한국정보처리학회 2011년도 춘계학술발표대회
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    • pp.372-373
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    • 2011
  • 인터넷 매체가 급증함에 따라 많은 이들에게 쉽게 노출 되어 유포되고 있는 유해 영상을 검출하기 위해 다양한 분류 방법에 대한 연구들이 이루어지고 있다. 본 논문에서 유해 영상 내의 피부색 영역에서의 Haar-like 특징을 추출하여 유해 영상을 분류하는 방법을 제안한다. 이를 위해, 첫 번째 단계에는 샘플 영상에 대하여 기존에 제안된 피부색 검출 방법을 적용하고, 두 번째 단계에는 검출된 피부색 영역 내의 Haar-like 특징을 추출한다. 각 샘플 영상에서 추출한 특징들은 SVM(Support Vector Machine)을 이용하여 각각 2000 장의 유해, 무해 영상을 학습한다. 학습된 모델은 유해 및 무해 영상이 혼합되어 있는 영상 집합들을 분류하는데 사용한다.

Intrathoracic Desmoid Tumor Presenting as Multiple Lung Nodules 13 Years after Previous Resection of Abdominal Wall Desmoid Tumor

  • Koo, Gun woo;Chung, Sung Jun;Kwak, Joo Hee;Oh, Chang Kyo;Park, Dong Won;Kwak, Hyeon Jung;Moon, Ji-Yong;Kim, Sang-Heon;Sohn, Jang Won;Yoon, Ho Joo;Shin, Dong Ho;Park, Sung Soo;Oh, Young-Ha;Pyo, Ju Yeon;Kim, Tae-Hyung
    • Tuberculosis and Respiratory Diseases
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    • 제78권3호
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    • pp.267-271
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    • 2015
  • Desmoid tumors are rare soft tissue tumors considered to have locally infiltrative features without distant metastasis until now. Although they are most commonly intraabdominal, very few cases have extra-abdominal locations. The origin of intrathoracic desmoid tumors is predominantly the chest wall with occasional involvement of pleura. True intrathoracic primary desmoid tumors with no involvement of the chest wall or pleura are extremely rare. We recently experienced a case of true intrathoracic desmoid tumor presenting as multiple lung nodules at 13 years after resection of a previous intraabdominal desmoid tumor.

초산(Acetic Acid) 증기 흡입에 의한 화학성 폐렴 1예 (A Case of Chemical Pneumonitis Caused by Acetic acid Fume Inhalation)

  • 남승우;문두섭;이동석;김진호;박익수;윤호주;신동호;박성수;이정희
    • Tuberculosis and Respiratory Diseases
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    • 제41권4호
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    • pp.424-428
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    • 1994
  • Many organic and nonorganic agents can cause chemical pneumonitis. Chemical pneumonitis induced by inhalation of acetic acid is a rare clinical condition. As acetic acid is a water soluble agent, it causes chemical irritation to respiratory tract and causes variable symptoms. We experienced a case of acute lung injury due to inhalation of acetic acid fume. A 56-year-old male patient was admitted due to dyspnea with vomiting for one day. After he inhaled acetic acid fume in occupational situation, he had chest tightness, chilling sense, and productive cough. Our case was good response to oxygen inhalation, antibiotics, and systemic steroids.

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Density control of ZnO nanorod arrays using ultrathin seed layer by atomic layer deposition

  • Shin, Seokyoon;Park, Joohyun;Lee, Juhyun;Choi, Hyeongsu;Park, Hyunwoo;Bang, Minwook;Lim, Kyungpil;Kim, Hyunjun;Jeon, Hyeongtag
    • Journal of Ceramic Processing Research
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    • 제19권5호
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    • pp.401-406
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    • 2018
  • We investigated the effect of ZnO seed layer thickness on the density of ZnO nanorod arrays. ZnO has been deposited using two distinct processes consisting of the seed layer deposition using ALD and subsequent hydrothermal ZnO growth. Due to the coexistence of the growth and dissociation during ZnO hydrothermal growth process on the seed layer, the thickness of seed layer plays a critical role in determining the nanorod growth and morphology. The optimized thickness resulted in the regular ZnO nanorod growth. Moreover, the introduction of ALD to form the seed layer facilitates the growth of the nanorods on ultrathin seed layer and enables the densification of nanorods with a narrow change in the seed layer thickness. This study demonstrates that ALD technique can produce densely packed, virtually defect-free, and highly uniform seed layers and two distinctive processes may form ZnO as the final product via the initial nucleation step consisting of the reaction between $Zn^{2+}$ ions from respective zinc precursors and $OH^-$ ions from $H_2O$.

폐렴과 급성 호흡부전으로 나타난 흉막의 고립성 섬유성 종양 1예 (A Case of a Solitary Fibrous Tumor of the Pleura Presenting as Pneumonia and Acute Respiratory Failure)

  • 박혜선;곽현정;박동원;구태연;김혜영;박소연;안성은;김상헌;김태형;손장원;정원상;윤호주;신동호;박성수
    • Tuberculosis and Respiratory Diseases
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    • 제65권4호
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    • pp.334-338
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    • 2008
  • 흉막의 고립성 섬유성 종양은 주로 흉막통, 호흡곤란, 기침 등의 증상으로 발현하거나 무증상으로 발견되는 경우가 대부분이다. 본 증례의 환자는 흉막의 고립성 섬유성 종양의 거대한 종괴 영향에 의한 압박증상과 동반된 폐렴, 패혈 쇼크와 급성 호흡곤란의 진행으로 매우 치명적인 임상 양상을 보였으며, 기계환기법과 항생제, 승압제 등의 치료 후에 종양절제술로 호전되었다. 저자들은 흉막의 고립성 섬유성 종양으로 인한 치명적인 임상 경과를 보인 증례 1예를 경험하였기에 문헌고찰과 함께 보고한다.