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AutoEncoder와 FCM을 이용한 불완전한 데이터의 군집화
박동철(Dong-Chul Park),장병근(Bung-Geun Jang) 한국통신학회 2004 한국통신학회논문지 Vol.29 No.5C
Autoencoder와 Fuzzy c-Means 알고리즘을 이용하여, 불완전한 데이터의 군집화를 위한 알고리즘이 본 논문에서 제안되었다. 본 논문에서 제안된 Optimal Completion Autoencoder Fuzzy c-Means (OCAEFCM)은 손상되어 불완전한 데이터의 최적 복원과 데이터의 군집화를 위해 Autoencoder Neural Network (AENN) 과 Gradient-based FCM (GBFCM)을 이용하였다. OCAEFCM 의 성능평가를 위해 IRIS 데이터와 금융기관에서 취득한 실제 데이터를 사용하였다 기존의 Optimal Completion Strategy FCM (OCSFCM)과 비교했을 때, 제안된 OCAEFCM 이 OCSFCM 보다 18%~20%의 성능 향상을 보여준다. Clustering of incomplete data using the Autoencoder and the Fuzzy c-Means(FCM) is proposed in this paper. The proposed algorithm, called Optimal Completion Autoencoder Fuzzy c-Means(OCAEFCM), utilizes the Autoencoder Neural Network (AENN) and the Gradiant-based FCM (GBFCM) for optimal completion of missing data and clustering of the reconstructed data. The proposed OCAEFCM is applied to the IRIS data and a data set from a financial institution to evaluate the performance. When compared with the existing Optimal Completion Strategy FCM (OCSFCM), the OCAEFCM shows 18%~20% improvement of performance over OCSFCM.
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만성 족근 관절 외측 불안정성 환자에서 $Brostr{\ddot{o}}m$ 변형 술식의 치료 결과
전호승,전승주,김종민,박병문,장병근,Jeon, Ho-Seung,Jeon, Seung-Ju,Kim, Jong-Min,Park, Byeong-Mun,Chang, Byung-Keun 대한족부족관절학회 2006 대한족부족관절학회지 Vol.10 No.1
Purpose: This study was performed to evaluate clinical and radiographical results of treatment of chronic lateral ankle instability with modified Brostrom procedure. Materials and Methods: This is a retrospective study of 22 cases in 22 patients treated with modified $Brostr{\ddot{o}}m$ procedure under the diagnosis of chronic lateral ankle instability from May 2000 to August 2004. Average age was 32.3 years. Average follow-up period was 23 months. Preoperative and postoperative radiographs of ankle anteroposterior view, lateral view and varus stress view were analyzed. The clinical evaluation was performed according to the Americal Orthopaedic Foot and Ankle Society scales. Results: After the modified $Brostr{\ddot{o}}m$ procedure, Americal Orthopaedic Foot and Ankle Society scales score was improved by average 28 points. Among the 22 cases, 13 cases were excellent, 3 cases good, 4 cases fair, and 2 cases poor with satisfaction of 73%. Five cases had intermittent ankle pain of whom 3 cases had difficulty during competitive sports activity. Lateral tilting of talus improved by average 5.4 degrees on varus stress view. Conclusions: The modified $Brostr{\ddot{o}}m$ procedure is one of the most effective methods for treating of chronic lateral ankle instability.
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김종호 ( Kim Jong Ho ),장병근 ( Jang Byoung Keun ) 국군의무사령부 2010 대한군진의학학술지 Vol.41 No.1
Objectives: This study was conducted to find out the actual state of using EMTs trained in the military, to analyze the differences of the awareness about EMTs in the each service, eventually to provide basic data for efficient using of EMTs. Methods: 450 EMTs of tri-services and 680 ordinary officers were surveyed with elf-administered Questionnaire, and the data was processed by SPSS 13.0 statistical program and tested with Frequency test, X2-test, t-test, ANOVA-test to analyze them. Results: First, the relationship between the current position and EMT’ job was perceived as low(35.8%), and only 9.5 % answered they knew well about role and duty of EMT. Second, 65.6% of ordinary officers didn’t know the EMT training facility in the military, which showed statistical differences between each service, rank, branch, and station. However, 95% agreed to the needs of EMTs. Third, the reliability on the first aid capability of EMT was high in levels of the battalion, regiment where there were fewer medical staffs(Doctor and nurse officers), and was high in Combat arms(4.7%), the other(3.92%), and the medical command(3.67%) orderly. The last, Altering organization and assignment, the legal basis and supply for medical equipment and material, deployment of EMT in remote area, and guarantee of joining in EMT training were evaluated highly by ordinary officers while the legal basis,, incentives of EMT’s license, support for international and national re-training by EMTs to use EMTs efficiently, which shows there was difference between ordinary officers’ and EMTs’ ideas about the priority. Conclusions: According to results, EMTs on the organization and assignment firstly and public relation for changing field officers’ idea are needed to use EMTs efficiently. To ensure the first-aid activity, the institutional devices are needed which are the law basis in the military, giving appropriate incentives to EMTs as working in the remote area, supply for medical equipment and material, activating re-training to enhance the capability of EMT, and making a badge for EMT’s prides.
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