문법 지식을 활용한 시 감상 방법 연구 -문학과 문법의 통합과 관련하여

최병해 한국어교육학회(구-한국국어교육연구학회) 2012 한국어교육학회 학술발표논문집 Vol.2012 No.-

[평설] 體得체득된 순수 서정의 현재와 미래

최병해 문예운동사 2015 문예운동 Vol.- No.128

자연선택과 효율 ː 진화주의적 접근

崔炳瑞 동덕여자대학교 산업연구소 1999 산업연구 Vol.5 No.-

가토 VX-2 Carcinoma의 종양부위와 괴사부위의 자기공명영상소견에 관한 연구

최병인,이동호,서정욱,한준구,김승협,한문희,강흥식,박재형,한만청 대한영상의학회 1990 대한영상의학회지 Vol.26 No.2

Twenty-eight VX-2 carcinomas innoculated at thigh muscles of rabbits were studied with magnetic resonance imaging (MRI) to evaluate the findings of tumors on MRI on the basis of comparison between MRI and the histopathologic findings,. magnetic resonance imaging of VX-2 carcinomas was done with a 2.0T superconducting magnet and spin-echo imaging and was done one week (14 tumors) and three weeks (14 tumors) after innoculation of tumor cells. relatively T1-and T2weighted images were obtained with REs of 500,2500 msec and TEs of 30, 80 msec. All 28 tumors were detected by MRI and showed high intensity as compared with that of adjacent thigh muscle. Intensity of tumor portions between one week group and three week group was not significantly different. Detectability of necrotic portions of the tumor was highest by T-1 weighted images with contrast enhancement and followed by T-2weighted images was best in the evaluation of nature of necrotic tissues. On T-2weighted images, low-int nsity areas corresponded to areas of early stage of necrosis, iso-intensity areas corresponded to areas of intermediate stage of necrosis, and high-intensity areas corresponded to ares of late stage of necrosis. These results suggest basic knowledge for understanding of Mr findings of tumor portion and necrotic portion of VX-2 carcinoma in rabbits.

요하지통 환자에서 선택적 경추간공 경막외강 블록의 예후 인자

최병인,권태동,이윤우,한정미 대한통증학회 2007 The Korean Journal of Pain Vol.20 No.1

Background: Selective transforaminal epidural block (STEB) has showen effectiveness as a diagnostic and therapeutic option for the management of patients with low back pain or sciatica. This study was carried out in order to determine the short-term effects and prognostic factors associated with STEB in patients with low back pain or sciatica. Methods: Ninety-seven patients were selectedfor participation in this study. Their diagnosis were based werewason the clinical symptoms and MRI findings. We performed STEB under fluoroscopic guidance and injected 3 ml of radio opaque dye in order to confirm the technical success of the procedure. We then injected 20 mg of triamcinolone mixed into 3 ml of 0.5% mepivacaine. One month later, we classified the patient outcomes as excellent, good, moderate or poor, according to the degree of reduction in VAS score from baseline. The independent variables assessed included symptom duration, block level, number of blocks, primary diagnosis, prior caudal block, anterior epidural space filling of dye, medication history, demographic data, radiating pain, back surgery and spondylolisthesis. Results: At a mean follow-up period of 1 month after STEB, excellent results were noted in the patients diagnosed with herniated lumbar disc (70%), non-specific spondylosis (54%), spinal stenosis (44%), and failed back syndrome (28%). The patients with epidural adhesion and combined spondylolisthesis were associated with poorer outcomes. Combined caudal block, symptom duration and the extent of epidural spread of the drug were not related to the effectiveness of the treatment. Conclusions: Selective transforaminal epidural block is effective in treating patients with radiculopathy, such as herniated lumbar disc, but it isrelatively ineffective in treating patients with structural deformities, such as failed back syndrome and spondylolisthesis.(Korean J Pain 2007; 20: 54-59)

간내 담관암의 전산화단층촬영소견의 특징 - 간 흡충중과의 연관성을 중심으로 -

최병인(Byung Ihn Choi),박재형(Jae Hyung Park),김주완(Chu Wan Kim),김승협(Seung Hyup Kim),김원홍(won Hong Kim),한만청(Chung Yong Kim),김정룡(Eun Sil Yu),김용일(Man Chung Han),유은실(Chu Wan Kim) 대한소화기학회 1988 대한소화기학회지 Vol.20 No.1

N/A 22 patients with intrahepatic cholangiocarcinomas of the liver were examined with computed tomography (CT). Initial symptom was nonspecific such as upper abdominal discomfort or pain in majority. There was no patient with jaundice or liver cirrhosis. 13 patients (59%) showed positive skin or stool test for clonorchis sinensis. 17 patients had the peripheral type of cholangiocarcinoma and five patients had the main duct type. The tumors showed low-density rnasses in pre and postcontrast CT scan in all cases vith wide variation of homogeneity. The tumor margins were irregular in 18 patients (82%) and the degree of contrast enhancement of the tumor was minimal in 19 patients (86%). 13 patients, who had the clonorchiasis, showed mild, and diffuse dilatation r>f the intrahepatic bile duct in addition to the low-density mass. 12 patients (55%) showed extrahepatic metastasis. In peripheral type of the tumor, five patients showed fine, stippled or aggregated powderlike high-density areas in precontrast Cl scan that vere mucinous substances within the mass on pathologic section. Eleven patients showed markedly low-density masses even in postcontrast CT which corresponded to diffuse, microcystic change of the tumor on resected specimen. In main duct type, all patients showed focal ductal dilataion around the low-density mass. Intrahepatic cholangiocarcinoma should be the primary diagnostic consideration when characteristic CT findings are detected in noncirrhotic patient with clonorchiasis.

History of the Asian Society of Abdominal Radiology

최병인,Myeong-Jin Kim,Seung Hyup Kim,Hiromu Mori,Manabu Minami 대한영상의학회 2020 Korean Journal of Radiology Vol.21 No.1

The history and administrative system of the Asian Society of Abdominal Radiology (ASAR) are described briefly with a focus on its academic activity, including congresses and education. ASAR is one of the three regional societies in the field of abdominal radiology, comprising approximately 2500 members from seven countries in Asia. A further increase in the numbers of members and affiliated societies is expected with the advancement of imaging technology and the distribution of radiologic equipment and knowledge. ASAR is responsible in Asia for matters of interdisciplinary collaboration in the field of abdominal radiology and has successfully represented Asia in the field of radiology.

기관지확장병의 방사선학적 고찰

최병인 대한영상의학회 1976 대한영상의학회지 Vol.12 No.2

It is well known that radiological study is the most important and mandatory procedure to establish the presence of bronchiectasis and to determine precise extent. In every individual case, the diagnosis is established by, and the indication for surgery is based on, the detailed radioligical findings. During four years from September, 1972 to September, 1976, clinical and radiologic findings of 100 cases of proven bronchiectasis with no acid fast bacillus in sputum at Seoul National University Hospital are analysed. The diagnosis was based on bronchography in all cases. The results are as follows: 1. The relation of male to female was 6:4 and peak incidence was in third decade. 2. Chronic cough, purulent sputum and hemoptysis were main symptoms. 3. Moist rales and wheezing, heared over the affected area of the lung, were main clinical signs but no physical findings was found in 41% of cases. 4. Simple chest P-A films revealed various findings indicating bronchiectasis and were highly suggestive of bronchiectasis in the great majority of cases but were normal in 8% of cases. 5. The extent of the disease was usually confined to one or two lobes and the left lung was much more often involved than the right. Bilateral involvement was approximately 30% incidence. The involvement was the left lower lobe, the lingular segment of the left upper lobe, and the right lower lobe in order of frequency.

히트 싱크를 활용한 EMI 저감 필터 설계

최병인(Byeong-In Choi),좌성훈(Sung-Hoon Choa) 대한전자공학회 2020 전자공학회논문지 Vol.57 No.12

최근 통신기술은 5G 및 10 Gbps 이더넷 기술의 상용화로 인한 데이터 속도 및 고주파 노이즈의 증가로 방사성 EMI(electro magnetic interference)가 증가하고 있다. 이러한 EMI의 발생은 주변 전자기기들에 영향을 미쳐 오동작 원인이 될 가능성이 높다. 또한 CPU 및 통신소자의 부하증가로 인한 고열 발생으로 히트 싱크(Heat sink)의 사용도 필수적이다. 그러나 히트 싱크는 통신기기의 내부로부터 발생되는 전자파를 외부로 방출시키는 안테나 역할을 할 수 있다. 본 연구에서는 히트 싱크를 사용한 통신기기의 방사성 EMI를 개선하기 위한 연구로서 히트 싱크와 PCB 접점에 방사성 EMI 필터를 적용하였다. EMI 필터는 소형화 및 실장이 용이한 다층 세라믹 커패시터(MLCC)를 사용하였으며, 1, 33, 100 pF 용량의 MLCC를 각각 사용하였다. EMI 시험은 통신기기와 안테나의 거리 3 m 위치에서 국제표준 및 국내 전파법 기준에 따라 전자파 무향실에서 진행하였다. MLCC를 적용하지 않은 경우, 발생되는 방사성 EMI는 허용 기준치를 초과하였다. 1 및 33 pF의 MLCC를 각각 적용한 경우, 방사성 EMI는 저감되었으나, 특정 주파수에서 허용 기준치를 초과하였으며, 100 pF의 MLCC를 적용 시에 허용 기준을 만족하였다. 또한 방사성 EMI 필터의 적용은 전도성 EMI에 영향이 없음을 확인하였다. 결론적으로 히트 싱크와 PCB 접지 사이의 MLCC 필터를 사용하여, 시스템 방사성 EMI 노이즈가 발생하는 주파수대역 차단으로 방사성 EMI를 저감 시켰으며, 히트 싱크 구조를 활용한 EMI 필터의 설계 방향을 제시하였다. Recently, radiated electromagnetic interference (EMI) is increasing due to an increase in data rates and high-frequency noise with the commercialization of 5G and 10 Gbps Ethernet technologies. The generation of EMI will influence the performance of nearby electronic devices and lead to malfunction of devices. The use of a heat sink also became essential as high heat is generated due to an increase in the load on the CPU and communication devices. However, the heat sink can act as an antenna that radiates electromagnetic waves generated from the inside of the devices, which may cause electromagnetic interference problem. In this study, we applied EMI filters between the heat sink and PCB to reduce the radiated EMI. The multi-layer ceramic capacitor (MLCC) was used for EMI filter, which has advantages in miniaturization and packaging. MLCCs of 1, 33, and 100 pF were used, respectively. The EMI test was conducted in an electromagnetic anechoic chamber according to international and domestic standards at a distance of 3 m between the device and the antenna. If MLCC was not applied, the radiated EMI generated exceeded the allowable limit. When MLCCs of 1 and 33 pF were applied, respectively, radiated EMI was reduced, but exceeded the allowable limit at the specific frequencies. In the case of applying MLCC of 100 pF, the radiated EMI was improved overall from 30 MHz to 1 GHz and satisfied the allowable limit of EMI standard. In addition, it was confirmed that the application of the EMI filter did not affect the conducted EMI. In conclusion, we successfully applied the MLCC filters to reduce radiated EMI and presented a design of the EMI filter using the heat sink.

충남 서부지역 가뭄 심화에 따른 가뭄극복 대토론회

최병만,조영대,Choe, Byeong-Man,Jo, Yeong-Dae 한국방재학회 2015 한국방재학회지 Vol.15 No.6