• 제목/요약/키워드: recurrent

검색결과 3,538건 처리시간 0.024초

Recurrent dipolarizations of near-Earth magnetotail during high-speed solar wind streamers

  • Lee, En-Sang;Parks, George K.;Wilber, Mark;Lin, Naiguo;Lee, Dae-Young;Kim, Khan-Hyuk
    • 천문학회보
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    • 제36권2호
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    • pp.94.1-94.1
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    • 2011
  • Recurrent substorms occur when high-speed solar wind streamers pass by Earth's magnetosphere. Most of the previous researches have been done using the observations obtained at the geosynchronous orbit focusing on the relationship between the solar wind disturbances and the occurrence of substorms. However, it is important to investigate the dynamics of the magnetotail because the magnetotail is the place where substorms develop. In this study we investigated the observations of recurrent dipolarizations in the near-Earth magnetotail that occurred during high-speed solar wind streamers. The dipolarizations and subsequent stretchings have occurred for more than three days with the average period of ~2 - 3 hours. The average period of ~2 - 3 hours is consistent with the average occurrence period of recurrent substorms. Also, the observed signatures on the geosynchronous orbit and the ground show recurrent substorms have occurred during the event. These suggest that the recurrent dipolarizations in the near-Earth magnetotail should be closely related to the recurrent substorms. On the other hand, there was no clear flow activities directly associated with the dipolarizations, except for some intermittent bursty flow activities. We will discuss the detailed characteristics of the dipolarizations and the relationship with recurrent substorms.

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재발성 아프타성 구내염 환자에 대한 가미육미지황탕의 효능 (Efficacy of Gamiyukmijihwang-tang on Recurrent Aphthous Stomatitis)

  • 김주연;김진성;손지희;선종기;강경;장승원;손지영;류봉하
    • 대한한방내과학회지
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    • 제33권2호
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    • pp.231-242
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    • 2012
  • Objectives : This study was designed to investigate the Efficacy of Gamiyukmijihwang-tang on Recurrent Aphthous Stomatitis. Methods : We surveyed 10 recurrent aphthous stomatitis patients visited the oral diseases clinic in the Kyung Hee University Oriental Medicine Hospital from September, 2011 to March, 2012. Before and 2 weeks after taking Gamiyukmijihwang-tang, the subjects were evaluated on clinical characteristics of recurrent aphthous stomatitis, severity of pain using visual analogue scale (VAS), quality of life about oral health (based on the 14-item Oral Health Impact Profile-14) and yin-deficiency condition (based on the 10-item Yin-deficiency Questionnaire). Then, 5 patients who had already finished treatment were assessed about recurrence of recurrent aphthous stomatitis by telephone survey 6 weeks later. Results : After 2 weeks taking Gamiyukmijihwang-tang, clinical characteristics of 10 patients of recurrent aphthous stomatitis improved; their severity of pain, quality of life about oral health and yin-deficiency condition improved significantly. After 6 weeks, 3 of 5 patients who had already finished treatment didn't experience recurrence of recurrent aphthous stomatitis. The other 2 patients experienced a recurrence, but their clinical characteristics of recurrent aphthous stomatitis improved significantly. Conclusions : Gamiyukmijihwang-tang is effective on recurrent aphthous stomatitis. Studies with a larger number of cases and longer follow-up will be needed in the future.

Management of Recurrent Vestibular Schwannomas

  • Kim, Wook-Ha;Park, Chul-Kee;Kim, Dong-Gyu;Jung, Hee-Won
    • Journal of Korean Neurosurgical Society
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    • 제39권2호
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    • pp.87-91
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    • 2006
  • Objective : Management of recurrent vestibular schwannomas[VS] after microsurgery or radiosurgery is a complicated subject. However, few studies have documented the outcome of recurrent VS. The authorsreviewclinicalexperience of recurrent VS management and analyzed the efficacy of treatment modalities. Methods : Between 1990 and 2002, 293 patients harboring unilateral VS underwent, microsurgery, radiosurgery, microsurgery followed by radiosurgery. Of these, 26 procedures [in 20 patients] were performed to assessed from an increased tumor size by magnetic resonance imaging[MRI]. The mean age of patients with recurred VS was 46.9 years and the mean follow-up period was 68 months. Radiological characteristics were investigated and growth rates of recurred tumors were calculated by measuring changes in tumor diameter on MRI after treatment. Results : MRI characteristics revealed a lobulated contour in 75% and a cyst in 60% of the patients. Only 1 patient showed neither lobulation nor a cyst. The average diameter of the recurrent tumors were 36.9mm. The overall tumor control rate for initial management was 87.4%, 94.7%, and 98.5% for microsurgery, radiosurgery, and microsurgery plus radiosurgery, respectively. However, control rates for recurrent tumors were lower at 85%, 63%, and 80%, respectively. Conclusion : A cystic nature and a lobulated tumor contour are frequent clinical characteristics of recurrent VS. Microsurgery or microsurgery followed by radiosurgery shows little difference in tumor control rate for primary and recurrent VS. However, radiosurgery alone appears to be less beneficial for recurrent VS.

순환신경망 기초 실습 사례 개발 (Development of Basic Practice Cases for Recurrent Neural Networks)

  • 허경
    • 실천공학교육논문지
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    • 제14권3호
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    • pp.491-498
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    • 2022
  • 본 논문에서는 비전공자들을 위한 교양과정으로, 기초 순환신경망 과목 커리큘럼을 설계하는데 필수적으로 요구되는 순환신경망 SW 실습 사례를 개발하였다. 개발된 SW 실습 사례는 순환신경망의 동작원리를 이해시키는 데 초점을 두고, 시각화된 전체 동작 과정을 확인할 수 있도록 스프레드시트를 사용하였다. 개발된 순환신경망 실습 사례는 지도학습 방식의 텍스트완성 훈련데이터 생성, 입력층, 은닉층, 상태층(컨텍스트 노드) 그리고 출력층을 차례대로 구현하고, 텍스트 데이터에 대해 순환신경망의 성능을 테스트하는 것으로 구성되었다. 본 논문에서 개발한 순환신경망 실습사례는 다양한 문자 수를 갖는 단어를 자동 완성한다. 제안한 순환신경망 실습사례를 활용하여, 한글 또는 영어 단어를 구성하는 최대 문자 수를 다양하게 확장하여 자동 완성하는 인공지능 SW 실습 사례를 만들 수 있다. 따라서, 본 순환신경망 기초 실습 사례의 활용도가 높다고 할 수 있다.

재발한 위암 환자의 오심 구토에 독활지황탕가미를 처방한 1례 (A Case of Recurrent Gastric Cancer Patient Treated with Dokhwaljihwang-tnggami for Nausea and Vomitting - A Gastric Cancer Patient's Case)

  • 정성국;송정모
    • 사상체질의학회지
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    • 제25권4호
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    • pp.425-431
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    • 2013
  • Objectives The purpose of this case study was to evaluate the effects of Sasang Constitutional diagnosis and treatment of recurrent gastric cancer patient. Methods Nausea and vomiting of recurrent gastric cancer patient was diagnosed Soyangin Emheooyol Pattern based on their Nature & Emotion, physical characteristics, symptoms. He was medicated dokhwaljihwang-tanggami. Results and Conclusions Nausea and vomiting of recurrent gastric cancer patient who was treated with Dokhwaljihwang-tanggami showed improvement in nausea vomiting appetite loss and general condition. This case study describe the effectiveness on Nausea and vomiting of Recurrent Gastric Cancer Patient by using Dokhwaljihwang-tanggami.

Intraoperative Recurrent Laryngeal Nerve Monitoring in a Patient with Contralateral Vocal Fold Palsy

  • Na, Bub-Se;Choi, Jin-Ho;Park, In Kyu;Kim, Young Tae;Kang, Chang Hyun
    • Journal of Chest Surgery
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    • 제50권5호
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    • pp.391-394
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    • 2017
  • Recurrent laryngeal nerve injury can develop following cervical or thoracic surgery; however, few reports have described intraoperative recurrent laryngeal nerve monitoring. Consensus regarding the use of this technique during thoracic surgery is lacking. We used intraoperative recurrent laryngeal nerve monitoring in a patient with contralateral vocal cord paralysis who was scheduled for completion pneumonectomy. This case serves as an example of intraoperative recurrent laryngeal nerve monitoring during thoracic surgery and supports this indication for its use.

자궁 내 기저질환을 가진 고령의 반복 유산 환자 2례에 관한 고찰 (Two Cases Report of Recurrent Miscarriage with Old Age and Underlying Diseases)

  • 김수현;김동일
    • 대한한방부인과학회지
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    • 제29권3호
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    • pp.78-90
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    • 2016
  • Objectives: The purpose of these cases is to report the effects of Korean medicine on two women with recurrent miscarriage.Methods: One women who had recurrent miscarriage with myoma uteri was 39 years old. She was treated with herbal medicine and acupuncture until intrauterine pregnancy (IUP) 14 wks. the other who had recurrent miscarriage with adenomyosis was 40 years old. she was also treated with these until IUP 11 wks.Results: After treatment, one women delivered successfully by normal full term spontaneous delivery. The other succeeded in normal pregnancy and she is 15 weeks pregnant.Conclusions: Two cases show that Korean Medicine has effects on recurrent miscarriage with old age and underlying diseases.

재발성 아프타성 궤양의 원인과 기전 (Etiology and Pathogenesis of Recurrent Aphthous Stomatitis)

  • 서봉직;이경은
    • Journal of Oral Medicine and Pain
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    • 제33권2호
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    • pp.187-194
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    • 2008
  • 재발성 아프타성 궤양은 흔히 발생하는 비특이적 구강점막질환이다. 궤양은 비각화 점막에 발생하고 일정시간이 흐른 후 치유가 되지만, 심한 통증으로 저작과 대화 등의 일상활동에 큰 지장을 초래한다. 그러나 아직까지 정확한 원인과 기전이 밝혀지지 않아 특별한 치료방법이 없어서 대증적인 방법으로 치료가 이루어진다. 이에 저자는 아프타성 궤양의 원인과 기전에 대한 문헌을 고찰하여 최신개념을 파악하고, 향후 나아가야 할 연구방향을 생각해 보고자 한다.

ON GENERALIZED W3 RECURRENT RIEMANNIAN MANIFOLDS

  • Mohabbat Ali;Quddus Khan;Aziz Ullah Khan;Mohd Vasiulla
    • 호남수학학술지
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    • 제45권2호
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    • pp.325-339
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    • 2023
  • The object of the present work is to study a generalized W3 recurrent manifold. We obtain a necessary and sufficient condition for the scalar curvature to be constant in such a manifold. Also, sufficient condition for generalized W3 recurrent manifold to be special quasi-Einstein manifold are given. Ricci symmetric and decomposable generalized W3 recurrent manifold are studied. Finally, the existence of such a manifold is ensured by a non-trivial example.