• Title/Summary/Keyword: Seung-Kook

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Thematic Word Extraction from Book Based on Keyword Weighting Method (키워드 가중치 방식에 근거한 도서 본문 주제어 추출)

  • Ahn, Hee-Jeong;Choi, Gun-Hee;Kim, Seung-Hoon
    • Proceedings of the Korean Society of Computer Information Conference
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    • 2015.01a
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    • pp.19-22
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    • 2015

  • 본 논문에서는 문장 및 문단에서 키워드의 역할에 따른 가중치에 근거하여 도서 본문에서 주제어를 추출하는 방법을 제안한다. 기존의 주제어 추출 방식은 도서 본문이 아닌 신문이나 논문에 대한 방식이므로 도서 본문에서의 주제어 추출에 그대로 적용하기에는 어려움이 있다. 따라서 본 논문에서는 빈도수뿐만 아니라 문장 내 중요 요소에 대한 가중치와 중요 문장에 대한 가중치를 후보 키워드에 부여하는 방식을 제안하였다. 제안한 계산 방식을 비문학 도서에 대하여 실험한 결과, 빈도수만으로 주제어를 추출한 기존 방식보다 본 논문에서 제안한 방식의 주제어 추출 결과의 정확도가 향상되는 것을 확인하였다.

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Traumatic Cervical Spinal Cord Injury Patient with Jejunal Perforation (외상성 경부 척수 손상 환자에서 동반된 소장 천공 : 증례보고)

  • Go, Seung Je;Yoon, Jeung Seuk;Yun, Jung Ho
    • Journal of Trauma and Injury
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    • v.26 no.4
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    • pp.319-322
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    • 2013

  • A 66 year-old woman had cervical spinal cord injury by an automobile. We performed emergency operation for partial quadriplegia. She recovered from motor weakness gradually, but complained of abdominal distension and mild dyspnea. A physical examination of her abdomen did not have tenderness and rebound tenderness. She underwent a decubitus view of chest X-ray due to aggravated dyspnea at postoperative 4 days. We detected free air gas of abdomen and immediately identified a cause of pneumoperitoneum by abdominal computed tomography. We performed an emergent laparotomy and confirmed a jejunal perforation. After an operation, she recovered well and is under rehabilitation.

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Inhibitory Activity of Medicinal Plant Extracts against Tyrosinase (약용식물 추출물의 Tyrosinase 억제 활성)

  • Na, Min-Kyun;Choi, Seung-Youl;Kim, Dong-Hee;Kim, Jin-Pyo;Lee, Chan-Bok;Kim, Kyung-Dong
    • Korean Journal of Korean Medical Institute of Dermatology and Aesthetics
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    • v.1 no.1
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    • pp.91-97
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    • 2005

  • (1) Objectives: To discover natural skin-lightening agents, we have evaluated the inhibitory activity of EtOH extracts from 20 medicinal plants against mushroom tyrosinase. (2) Methods: Tyrosinase activity was determined by the dopachrome method using L-tyrosine as the substrates. (3) Results: Of the plant extracts tested, the extracts of 4 plants, Albizzia julibrissin, Curcuma longa, Anethum graveolens and Sophora flavescens, exhibited potent inhibitory activity (> 50%) in mushroom tyrosinase assay. Four plant extract, extracts of Agrimonia pilosa, Paeonia moutan, Magnolia obovata and Eugenia caryophyllata also showed relatively strong inhibitory (> 40%) against mushroom tyrosinase. (4) Conclusion: These active medicinal plants may be useful for the development of skin-whitening agents. Since the active medicinal plants may contain effective tyrosinase inhibitors even more than kojic acid, further study to identify the active constituents from the plants is expected.

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