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반복적인 131I rituximab 방사면역치료를 시행 받은 비호지킨 림프종 환자 군에서 종양 부위의 영상기반 방사선 흡수선량 평가와 임상적 의의
변병현 ( Byung Hyun Byun ),김경민 ( Kyeong Min Kim ),우상근 ( Sang Keun Woo ),최태현 ( Tae Hyun Choi ),강혜진 ( Hye Jin Kang ),오동현 ( Dong Hyun Oh ),김병일 ( Byeong Il Kim ),천기정 ( Gi Jeong Cheon ),최창운 ( Chang Woon Choi 대한핵의학회 2009 핵의학 분자영상 Vol.43 No.1
LSTM-RNN 기반 태양광 발전량 추정을 통한 고속도로 주변부 태양광발전 시설의 적지 선별 기술
허재(Heo, Jae),박범수(Park, Bum Soo),정윤화(Jung, Yoon Wha),정재훈(Jung, Jae Hoon),김병일(Kim, Byun Il),한상욱(Han, Sang Uk) 대한공간정보학회 2020 대한공간정보학회지 Vol.28 No.1
최근 급증하는 태양에너지 수요를 수용하기 위해 발전 효율과 경제성이 높은 부지를 확보하기 위한 태양광 발전시설의 부지 선별 연구가 수행되었다. 하지만 국내의 경우 유휴부지인 고속도로 주변부를 대상으로 음영효과(shadow effect)와 같은 지형효과를 고려한 발전소 입지분석을 한 사례가 거의 없으며, 기존 발전량 데이터가 부족함에 따라 데이터 수집이 용이한 일사량을 사용하여 간접적으로 입지분석을 진행하고 있는 실정이다. 따라서 본 연구는 지형효과를 충분히 고려하여 제작된 태양복사에너지 지도와 일조시간, 강수량 등 6개의 기상데이터를 사용하여 long short-term memory(LSTM)기반 태양광 발전량 추정모델을 제시하고, 추정된 값을 고속도로 주변부로 제한하여 적지탐색을 실시하였다. 그 결과, 시계열 데이터 기반의 발전량 추정모델의 성능은 RMSE 13.942(h), nRMSE 8.683(%), MAPE 10.873(%), 그리고 R² 0.726으로 나타났다. 또한 고속도로 주변부 적지탐색의 결과로 잠재적으로 발전량이 높을 것으로 예상되는 상위 10곳의 지역을 제시하였다. 이러한 결과는 기설치된 발전소의 시계열 데이터를 활용하여 새로운 지역의 태양광 발전량 추정이 가능하다는 것을 보였으며, 이를 바탕으로 고속도로 주변부 고에너지 잠재지역을 선별할 수 있음을 보여준다. The selection of suitable PV sites is critical for high electricity generation. However, available solar energy rather than power generation has often been estimated to evaluate potential PV sites due to a lack of available power data. Thus, this study proposes the use of PV power data collected from existing plants for training and in turn for predicting the power outputs in other sites, which were not used for training. Particularly, this study investigates slopes of national highway network by using GIS; in this way, available land for PV systems can further be secured. The data include the power outputs from 172 existing plants as well as weather conditions, collected monthly. The temporal patterns in the time series data are learned using the long short-term memory(LSTM) recurrent neural network(RNN) model and then applied to highway slopes extracted from GIS layers. As a result, the proposed model shows a MAPE of 10.873(%) and R² of 0.726. Then, the top ten sites on slopes are identified and evaluated as an example. In this regard, this study may explore a computational approach that can predict the amount of potential power generation using existing data and search for suitable locations of PV facilities using GIS data.
김병일,이수남,이재갑,김명준,홍종민,변동일,여운철,이기섭,임홍섭,유길종,권국환 대한내과학회 2000 대한내과학회지 Vol.59 No.3
Cavernous hemangiomas are unusual tumors with a propensity for skin and liver involvement and rarely involving adrenal gland. Adrenal hemangiomas are nonfunctioning tumors, usually discovered at autopsy. In 1955, Johnson and Jeppensen reported the first adrenal hemangioma to be removed surgically. One case of hemangioma of the adrenal gland was reported in Korea. We report a case of a cavernous hemangioma of the adrenal gland which was successfully treated surgically. In addition, we review the clinical, radiographic, and pathologic features of this disease. With the advance of diagnostic thchniques in arterography, ultrasound, and computerized tomography, preoperative recognition and diagnosis should be simplified and surgical removal carried out to rule out possible malignancy, preclude traumatic rupture, or relieve symptoms of the mass.(Korean J Med 59:310-313, 2000)
이정호,김병일,이명래,홍종민,변동일,김우석,이기섭,여운철,임홍섭,이재갑 대한소화기내시경학회 1999 Clinical Endoscopy Vol.19 No.6
Behcet's disease is a recurrent and multisystemic disorder which usually persists over many years. In 1937 Behcet described a chronic relapsing triple symptom complex of recurrent oral ulceration, genital ulceration and ocular inflammation. Other manifestations of the syndrome include arthritis, cutaneous vasculitis, thrombophlebitis, epididymitis, ulcers of gastrointestinal tract and meningoencephalitis. Recently, a case was experienced involving intestinal Behcet's syndrome with duodenal ulcer bleeding. A 32-year-old male patient was admitted due to hematemesis, and epigastric pain. The patient had ulcers on the oral mucosa, soft palate, external genitalia, and anus. An irregularly marginated ulcer with bleeding was found on the anterior of the duodenal bulb through esophago- gastroduodenoscopic examination. The patient was diagnosed with Behcet's disease and was treated with steroids. In this paper, the case of duodenal bulb involvement of Behcet's disease is reported with a review of relevant literature.
이정호,이희영,변동일,강효승,김우석,이기섭,김병일,여운철,이명래 대한소화기내시경학회 1998 Clinical Endoscopy Vol.18 No.2
Malignant fibrous histiocytoma is a pleomorphic sarcoma in adults, which occurs principally as a mass on an extremity or in the abdominal cavity or retroperitoneum. It typically involved deep fascia or skeletal muscle and only rarely was confined to the subcutis without fascial involvement. Malignant fibrous histiocytomas developed in the intraabdominal organs are very rare and only few cases have been reported until now. Here, we report a case of malignant fibrous histiocytomar developed in the stomach of a 46-year old male who showed clinical and histologic features of malignant fibrous histiocytoma without any identified etiologic factors. The patient was treated successfully with surgery, and has had no recurrence since, during the ensuring one and a half yars.