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- 저자 : 권순영 (검색결과 358 건)
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권순영,Gwon, Sun-Yeong 한국LP가스공업협회 2000 LP가스 Vol.68 No.-
LPG산업구조개편단이 지난 3월 15일부터 22일까지 영국과 일본을 방문했다. 출장단의 일원이었던 협회 권순영 상무의 보고서를 게재한다.
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반도체 레이저의 이득스위칭을 이용한 UWB 임펄스 발생기 설계
권순영,김범주,박종대,Kwon Soon-young,Kim Bum-in,Park Chong-dae 대한전자공학회 2005 전자공학회논문지TC (Telecommunications) Vol.42 No.6
In this paper, we implemented a impulse generator, the one of the part in UWB(Ultra Wide Band) system using step recovery diode(SRD) and gain-switced semiconductor laser. The impulse generator was consisted of four stages; The first stage used SRD to generate the first impulse for gain switching. The second stage controled current for the suitable gain switching condition. The third was the second impulse generator to generate gaussian pulse. For gain switching, the first impulse was applied to semiconductor laser. In the last stage the gain switched impulse was converted into mono-gaussian pulse. The measured mono-gaussian pulse was 360 psec pulse-width and $-70mV \~ +50mV$ amplitude in time domain. In frequency domain its magnitude and bandwidth was, respectively, -41dBm and 3.6GHz. Accordingly, the impulse generator that we suggested was suitable for UWB systems.
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권순영,김형진,조성동,백승국,정광윤,최건,최종욱,Kwon, Soon-Young,Kim, Hyung-Jin,Jo, Sung-Dong,Baek, Seung-Kuk,Jung, Kwang-Yoon,Choi, Geon,Choi, Jong-Ouck 대한기관식도과학회 2001 大韓氣管食道科學會誌 Vol.7 No.1
Background and Objectives: Adenoid cystic carcinoma (ACC) is an aggressive, often indolent tumor, with a high incidence of distant metastasis (DM). Relatively little has been written about the factor that influence distant spread and subsequent survival because it is uncommon and has protracted clinical course. We attempted to reemphasize the biologic behavior of ACC by investigating the relationship between the clinical features and prognosis. Materials and Methods : We have retrospectively studied 24 determinate patiens who received definitive treatment in our hospital between 1984 and 1995 for ACC in all salivary sites. Inclusion criteria were no prior treatment elsewhere other than excisional biopsy and eligibility for follow-up of at least 5 years. Variables assessed for their impact on distant metastasis included age, gender, size, node status, stage, histologic pattern, locoregional treatment failure. Results : Treatment failure occurred in a total of 16 of 24 determinate Patients (64%), 12 of whom had DM (50%). This was usually associated with locoregional recurrence (8 patients), but DM was the only indication of failure in 4 whose primary tumor was controlled. Of the 12 patients with known DM, the lung was recored as the only involved site in 7 Patients, lung was involved in addition to other sites in 1, bone and liver metastasis occurred in 2 respectively. Disease-free intervals varied from 3 month to 14 years (median 3 years). The only significant factors influencing survival were the size of the primary tumor, locoregional recurrence. Conclusion : The high incidence of DM with locoregional failure confirms the importance of aggressive initial surgery. combined with irradiation, for high-stage tumors or involved surgical margins. Large tumor size and locoregional recurrence, rather than microscopic appearance, were predictive of DM.
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권순영,정광윤,최종욱,Kwon Soon-Young,Jung Kwang-Yoon,Choi Jong-Ouck 대한두경부종양학회 1995 대한두경부 종양학회지 Vol.11 No.2
The laryngeal cancer is a cancer of secondary sex organ, such as malignant tumors of the mammary gland, endometrium, and prostate. The clinical characteristics of the female laryngeal cancers are considered somewhat to be different from that of male. As cancer of the larynx is principally a disease of men, many investigations have showed the characteristics of the male laryngeal cancers. For understanding the clinical characteristics of the female laryngeal cancers, we analyzed 21 cases of laryngeal cancer in women, diagnosed and treated in our institute during the last 10 years. The results were, 1) In female subjects, supraglottis was most common subsite of laryngeal cancer(85.7%). 2) On histopathologic grade, the moderately differentiated squamous cell carcinoma was the most common (80.9%). 3) The positive neck nodes were 19 %, considered to be lower than that of total laryngeal cancer. 4) The treatment results, the 2 year disease free rate and 5 year survival rate were 88.9%, 83.3%, respectively. These results suggest, therefore, female laryngeal cancers are more likely to be supraglottic cancer than glottic cancer. In spite of high incidence of supraglottic cancer, the nodal metastases are rare, the prognosis appeared to be good.
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권순영,Gwon, Sun-Yeong 한국LP가스공업협회 2007 LP가스 Vol.19 No.4
LPG경차는 고유가관련 에너지절약, 대기질개선, 교통혼잡완화, 소비자의 연료비절감 및 구입차량에 대한 선택폭 확대, 저소득층에 대한 배려 등 국가적과제와 자동차산업의 활성화 차원에서 허용하는 것이 바람직하다.
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권순영,Gwon, Sun-Yeong 한국LP가스공업협회 2007 LP가스 Vol.19 No.1
우리 협회는 LPG산업의 성장둔화와 LNG보급확대로인한 시장잠식 및 수요감소 등에 대한 대응이 요구되고 있는 상황에서 LPG산업의 활로를 모색하고 LPG의 경쟁력확보를 위해 소형저장탱크보급활성화를 위한 워크샵을 개최했다. 워크샵에서 발표된 내용을 개제하다.
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