http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
결합 선로를 이용한 평판 구조의 Marchand 발룬의 합성
이종환,염경환,Lee Jong-Hwan,Yeom Kyung-Whan 한국전자파학회 2005 한국전자파학회논문지 Vol.16 No.2
평판형 결합 선로를 이용한 Marchand 발룬의 합성 기법을 제시하였다. 이러한 형태의 발룬이 갖추어야할 설계 조건에 대해서 살펴보고, 설계 조건에 부합하는 발룬의 합성을 전송선 등가회로를 통해 간편하게 모델링 할 수 있음을 보였다. 합성된 발룬은 equi-ripple 대역 통과 특성을 나타내고, 일반적 인 평판 구조에서 구현하기 어려운 평형 선로 없이도 크기가 같고 위상이 반대인 평형 신호를 얻을 수 있다. 결합 선로를 이용한 Marchand 발룬의 구현에 많이 사용되는 다중 결합 선로의 물리적 구조와 발룬의 합성에 필요한 요소값들 사이의 관계를 해석하는 방법도 소개하였다. 이상의 방법들을 이용하면 평판 구조의 다중 결합 선로를 갖는 Marchand 발룬의 체계적인 설계가 가능하다. The synthesis procedure of Marchand balun using planar coupled-line is presented. The design limitations of this type of balun have been described before its synthesis procedure. The balun has equi-ripple passband responses and balanced output without fourth balanced transmission line which is difficult to implement with conventional planar topology. As an example, 2:1 Marchand balun is designed and its momentum simulation result show good verification fur this methodology.
이종환 ( Lee Jong-whan ) 한국안전문화연구원 2020 현대사회와 안전문화 Vol.3 No.3
연구목적: 이 연구는 한국행정연구원에서 실시한 사회통합실태조사 데이터를 활용하여 선행연구에서 밝혀진 경찰 신뢰와 관련된 청렴성, 공정성, 안전성 변인을 활용하여 경찰 신뢰의 영향 요인을 규명하고자 한다. 연구방법: 이 연구는 한국사회과학자료원에서 경찰신뢰와 관련된 조사데이터를 탐색하였고 2017년도에 한국행정연구원에서 실시한 사회통합실태조사 데이터를 활용하여 자료를 분석하였다. 통계기법은 주로 회귀분석이 활용되었다. 결론: 첫째, 사회인구학적 특성에 따라 경찰 청렴성, 공정성, 안전성, 신뢰는 차이가 있다. 즉, 성별에 따른 안전성은 남자, 그리고 경찰 신뢰는 여자가 높다. 연령에 따른 경찰 청렴성, 공정성, 안전성, 그리고 경찰 신뢰는 연령이 증가할수록 높다. 직업에 따른 경찰 청렴성은 사무직, 경찰 공정성은 사무직, 안정성은 농림업에서 높다. 수입에 따른 경찰 청렴성은 100만원 미만, 공정성은 100-200만원, 안전성은 500-600만원, 그리고 경찰 신뢰는 100만원 미만에서 높다. 학력에 따른 경찰 청렴성은 학력이 낮을수록 높다. 안전성은 초등학교졸, 경찰 신뢰는 중졸에서 높다. 둘째, 경찰 청렴성, 공정성, 안전성은 경찰 신뢰에 영향을 미친다. 경찰 청렴성, 공정성, 안전성을 고려하지 않은 경우 사회인구학적 특성이 경찰 신뢰에 영향을 미치지만, 그 영향력은 미미하다. 그리고 경찰 청렴성, 공정성, 안전성을 투입하면 사회인구학적 특성의 영향력은 무의미하다. 경찰 청렴성은 경찰 신뢰를 결정하는 중요한 요인이다. Purpose: This study is to investigate the factors influencing the trust of the police by utilizing the data of the survey on social integration conducted by the Korea Institute of Public Administration, and using the variables of integrity, fairness, and safety related to police trust identified in previous studies. Method: The survey data related to police trust was searched at the Korea Institute of Social Sciences Data, and the data was analyzed using the data of the survey on social integration conducted by the Korea Institute of Public Administration in 2017. Regression analysis was mainly used for statistical techniques. Police integrity is an important factor in determining police trust. Conclusion: First, there are differences in police integrity, fairness, safety, and trust according to socio-demographic characteristics. In other words, male safety is high according to gender, and female confidence is high in police. Police integrity, fairness, safety, and police trust according to age increase with age. Police integrity is high in office workers, police fairness in office workers, and stability is high in agriculture and forestry. Police integrity according to income is high at less than 1 million won, fairness is 1 to 2 million won, safety is 5 to 6 million won, and police trust is high at less than 1 million won. Police integrity according to education level is higher the lower the education level is. Safety is high in elementary school graduates and police trust is high in middle school graduates. Second, police integrity, fairness, and safety affect police trust. If police integrity, fairness, and safety are not considered, socio-demographic characteristics affect police trust, but their influence is negligible. And if police integrity, fairness, and safety are put in, the influence of socio-demographic characteristics is meaningless. Police integrity is an important factor in determining police trust.
Kainic Acid 투여로 경련이 유도된 백서에서 Propofol의 항경련 효과
김종욱(Jong Uk Kim),이은호(Eun Ho Lee),박평환(Pyung Hwan Park),한성민(Sung Min Han),이종환(Jong Whan Lee),홍혜남(Hea Nam Hong),황승준(Seung Jun Hwang) 대한마취과학회 1999 영문부록 Vol.- No.-
Background : Propofol has been used to treat status epilepticus, but anticonvulsant effects of propofol were not proven distinctly. We examined the effect of propofol on seizure induced by kainic acid that is a glutamate analogue with excitotoxic properties. Methods : All experimental rats were injected with kainic acid (10 mg/kg, i.p.). When the salivation and focal convulsion were observed, propofol (50 mg/kg, n=8) or saline (5 ml/kg, n=8) was injected intraperitoneally. The seizure activities were observed for 6 hrs. Acid fuchsin stain and immunoreactivity (heat-shock protein) have been used as indicators of injured neurons and epileptic insults. Results : There were significant decrease of seizure activity in propofol treated group (p<0.01). Conspicuous cytopathologic reactions were evident in saline treated group but no detectable histologic change in propofol group. Immunocytochemical reactions with a monoclonal antibody against HSP-70 were evident in the saline group but no reaction in propofol group. Conclusions : These results indicate that propofol has marked anticonvulsant effects against seizure induced by kainic acid in the rat. (Korean J Anesthesiol 1999; 36: 1038∼1045)
Xiaoyu Ding,Jong-Hwan Lee(이종환),Seong-Whan Lee(이성환) 한국정보과학회 2011 한국정보과학회 학술발표논문집 Vol.38 No.1C
In this paper, we propose a constrained alternating least squares nonnegative matrix factorization algorithm (cALSNMF) to detect active brain regions from single subject's task-related fMRI data. In cALSNMF, we define a new cost function which considers the uncorrelation and noisy problems of fMRI data by adding decorrelation and smoothing constraints in original Euclidean distance cost function. We also generate a novel training procedure by modifying the update rules and combining with optimal brain surgeon (OBS) algorithm. The experimental results on visuomotor task fMRI data show that our cALSNMF fits fMRI data better than original ALSNMF in detecting task-related brain activation from single subject’s fMRI data.
이수현(Su-Hyun Lee),류시영(Si-Young You),최현주(Hyun-Joo Choi),조정해(Jung-Hae Cho),김성환(Sung-Whan Kim),이종환(Jong-Hwan Lee),김영운(Young-Woon Kim),김훈교(Hoon-Kyo Kim) 대한두경부종양학회 2012 대한두경부 종양학회지 Vol.28 No.1
Small cell carcinoma mainly occurs in the lung. Approximately 2.5-5% of small cell carcinomas are prima-ry extrapulmonary which are commonly found in the esophagus, GI tract, skin, uterus, and urinary tract.Small cell carcinoma of the head and neck is extremely rare and its prognosis is poor.We report a case of supraglottic small cell carcinoma with cervical lymph node and rib metastasis in a 75-year-old man. The patient was treat-ed with sequential combination of chemotherapy and radiotherapy, but the cancer has progressed.We conclud-ed that we have to find an effective therapy for laryngeal small cell carcinoma.