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강도균(Kang Do Kyun),성낙운(Seong Nak Un) 한국정보과학회 1994 한국정보과학회 학술발표논문집 Vol.21 No.1
정보화 사회와 더불어 정보통신의 수용 급증으로 안전하면서도 경제적인 데이타 통신을 위한 요구가 꾸준히 연구되어왔다. 이와 같은 요구사항을 만족할 수 있도록 본 논문에서는 데이타통신 비용을 절약하고 허가 되지 않은자에 의한 도청을 방지하는 방법을 제시하였다. 압축암호화 결합시스템은 화일 압축으로 인하여 자료 송수신 비용 및 저장공간을 절약할 수 있었다. 기존 LZW코딩 방법을 이용한 압축 암호화 결합시스템에서는 압축열 전체를 암호화함으로써 암호화 비용면에서 제안방법보다 효율이 떨어졌고, 일부분만 암호화하는 시스템에서는 등록된 스트링 판단을 위해 1비트를 삽입함으로써 큰 화일에서는 압축률이 상당히 떨어졌다. 제안 시스템에서는 압축된 화일중에서도 일부분(단일문자)만을 암호화함으로써 암호화 비용을 절약할 수 있었고 단일문자 구분을 위해서 삽입되는 구분자도 암호화함으로써 암호화 강도에서도 상당한 효과를 얻었다.
강도균 ( Do Kyun Kang ),김형렬 ( Hyeong Ryul Kim ),김용희 ( Yong Hee Kim ),김동관 ( Dong Kwan Kim ),박승일 ( Seung Il Park ) 대한외상학회 2010 大韓外傷學會誌 Vol.23 No.2
Purpose: As techniques and instruments for video-assisted thoracic surgery (VATS) have been evolving, attempts to perform VATS for chest trauma have been increasing. Several studies have demonstrated the feasibility and safety of VATS for thoracic trauma. We reviewed our experience to evaluate the clinical feasibility and safety of VATS for thoracic trauma. Methods: Fifty-two patients underwent thoracic surgery for chest trauma in Asan Medical Center from January 1990 to December 2009. VATS was performed in 21 patients who showed stable vital signs. We reviewed retrospectively the medical records of those patients to investigate the results of VATS for thoracic trauma. Results: Thoracic exploration for chest trauma was performed in 52 patients. There were 46 males (88.5%) and 6 females (11.5%). The median age was 46.0 years (range: 11~81 years). There were 39 blunt and 13 penetrating traumas. A standard posterolateral thoracotomy was performed in 31 patients, and VATS was tried in 21 patients. We performed successful VATS in 13 patients; 11 males (84.5%) and 2 females (15.5%) with a median age of 46.0 years (range: 24~75 years). The indication of VATS was persistent intrathoracic hemorrhage in 10 patients and clotted hemothorax in 3 patients. There were no complications, but there were two mortalities due to multiple organ failure after massive transfusion. In 8 patients, VATS was converted to a standard posterolateral thoracotomy for several reasons. The reason was inadequate visualization for bleeding control or evacuation of the hematoma in 5 patients. In 3 patients, VATS was performed to evaluate diaphragmatic injury. After the diaphragmatic injury had been confirmed, a standard posterolateral thoracotomy was performed to repair the diaphragm. Conclusion: VATS should be safe and efficient method for diagnostic evaluation and surgical management of stable patients with thoracic trauma. (J Korean Soc Traumatol 2010;23:170-174).
김기훈 ( Ki Hoon Kim ),김진수 ( Jin Su Kim ),박성진 ( Sung Jin Park ),김운원 ( Woon Won Kim ),강도균 ( Do Kyun Kang ),민호기 ( Ho Gi Min ),김용한 ( Yong Han Kim ),오철규 ( Cheol Gyu O ) 대한외상학회 2012 大韓外傷學會誌 Vol.25 No.3
Blunt diaphragmatic rupture (BDR) is a relatively rare injury and occurs in 0.8% to 7% of all thorocoabdominal blunt trauma. Especially right diaphragmatic rupture after blunt abdominal trauma is a rarer than left. The diagnosis of BDR can be missed while evaluating the multiple trauma patient. Other severe injuries may mask BDR during the primary resuscitation and survey. We experienced two cases of traumatic rupture of right diaphragm, one diagnosed immediately and the other diagnosed delayed. In this paper we present two cases of traumatic diaphragmatic rupture. (J Korean Soc Traumatol 2012;25:87-90)