인공 슬관절 전치환술을 시행한 환자에서 수술 전 비경구적 철 수크로스 투여의 효과

배기철 ( Ki Cheor Bae ),조철현 ( Chul Hyun Cho ),이경재 ( Kyung Jae Lee ),이성윤 ( Sung Yun Lee ) 대한슬관절학회 2010 대한슬관절학회지 Vol.22 No.2

Purpose: The purpose of this study was to evaluate the efficacy of preoperative parenteral iron sucrose therapy in patients with postoperative anemia following total knee arthroplasty. Materials and Methods: We retrospectively reviewed 30 patients who had postoperative anemia and who had undergone total knee arthroplasty from March 2008 to November 2008. Those patients agreed on treatment with preoperative parenteral iron sucrose therapy. The other 30 patients without iron sucrose administration were selected as a control group from January 2007 to February 2008. In this study, age, gender, the preoperative and postoperative values of hemoglobin, the operation time, the amount of bleeding, the amount of transfusion, the frequency of transfusion, postoperative infection and the length of the hospital stay were evaluated and statistically compared. Postoperative complications were also assessed. Results: Ant complications due to the administration of iron sucrose were not observed. At 48 hours postoperatively, the mean hemoglobin of iron sucrose administration group was 9.4g/dL and that of the control group was 8.7g/dL (p=0.008). Homogenous transfusion was done for 17 cases in the iron sucrose administration group and for 22 cases in the non-iron sucrose administration group, but among these groups, the results were statistically insignificant. The amount of homogenous transfusion for each patient who underwent iron sucrose administration is 1.3 units and this was 1.7 units for each patient who underwent non-iron sucrose administration. No statistical differences were observed between the groups in this study. Conclusion: Parenteral iron sucrose administration in patients following total knee arthroplasty was not efficacious for preventing immediate postoperative anemia.

곽향 추출물의 염증성세포활성물질 억제효과

배기상 ( Gi Sang Bae ),박희제 ( Hee Je Park ),김도윤 ( Do Yun Kim ),서상완 ( Sang Wan Seo ),박경배 ( Kyung Bae Park ),김병진 ( Byung Jin Kim ),송제문 ( Je Moon Song ),이경용 ( Kyung Yong Lee ),나철 ( Chul Na ),신병철 ( Byung Chul 대한본초학회 2008 大韓本草學會誌 Vol.23 No.3

국립산림과학원 산림유전자원부 종합연구동

배기철(Bae, Kicheol),최기철(Choi, Kicheol) 현대건축사 2013 월간 CONCEPT Vol.- No.173

축제참가자의 신선지향성이 참여의지와 만족에 미치는 영향

배기철 ( Ki Chul Bae ),신학진 ( Hak Gene Shin ) 관광경영학회 2009 관광경영연구 Vol.39 No.-

The purpose of this study was to find what are the effects of festival participant`s novelty seeking to involvement intention and satisfaction. A survey design was adopted to collect the required information and a random sampling approach was utilized to select the respondents(N=220) at Namwon herb festival. SEM(Structural equation modeling) was used to examine relationship among novelty seeking, involvement intention, and satisfaction. We found the novelty seeking has a positive effect to the involvement intention(standard regression weight=0.375, t=4.120, p<0.01) and to the satisfaction(standard regression weight=0.440, t=5.096, p<0.01). Also, the involvement intention has a positive effect to the satisfaction(standard regression weight=0.267, t=3.397, p<0.01). The findings lead to an improved understanding of the interrelationship among novelty seeking, involvement intention and satisfaction in the context of festival.

견봉 쇄골 관절 탈구의 수술적 치료

배기철(Ki-Cheol Bae),손승원(Sung-Won Sohn),조철현(Chul-Hyun Cho),정수원(Su-Won Jung) 대한견주관절의학회 2006 대한견주관절의학회지 Vol.9 No.2

동종 아킬레스건을 이용한 전방십자인대 재건술

배기철 ( Ki Cheor Bae ),손승원 ( Sung Won Sohn ),조철현 ( Chul Hyun Cho ),이경재 ( Kyung Jae Lee ),오건명 ( Geon Myeong Oh ) 대한스포츠의학회 2008 대한스포츠의학회지 Vol.26 No.2

The purpose of this study was to evaluate the clinical and radiologic result of arthroscopic anterior cruciate ligament (ACL) reconstruction using an Achilles tendon allograft. Fifty three patients out of 66 patients, who were performed arthroscopic ACL reconstruction between January 2004 and May 2006 at our institute, were followed up at least more than 1 year 6 months. Among them, sixteen patients underwent second look arthroscopy. The average Lysholm score was improved from preoperative 51.2 to postoperative 84.9. On Lachman test, 45 cases were converted to negative. On Pivot shift test, 46 cases were converted to negative. The anterior laxity test with Telos(R) on 30 lb was 10.3 mm in average at preoperative stage and was decreased to 2.9 mm in average at postoperative stage. In conclusion, ACL reconstruction using Achilles allograft can be one of effective grafts for the ACL reconstruction.

한국문화관광상품에 대한 일본여행자의 만족과 재방문의도에 관한 연구

배기철(Bae Ki-chul),황윤용(Hwang Yun-yong) 한국여행학회 2001 여행학연구 Vol.13 No.-

This dissertation purports to examine the relationship between the attitudes before and after tour to Korea for the Japanese tourists. In specific, we tried to verify the relationship between their evaluations of cultural-tourism - products(C.T.P.) attribute and travel-agency service(T.A.S) as a product. We explored how the manipulative variables affect the T₁, (before visit) and T₂(after visit). As a result of the research, we found that the tourists who have positive attitude towards CTP and TAS at T₁. were intended to repurchase the CTP. And those who satisfy the TAS were intended to repurchase TAS as well. The factors related to CTP at the T₂. were analyzed and the results depicted that after visiting Korea their perceptions on the evaluation of CTP and TAS were par with the one of before visiting Korea as much same as the point of T₁ The tourists who were satisfied with CTP, had a propensity to repurchase the CTP. And also the tourists who are satisfied with TAS, are positively related to repurchase TAS. However, there existed no significant crossover effect which at the point of T₁, the satisfaction on CTP did not effect to repurchasing intention for TAS while the satisfaction on TAS did not influenced to repurchasing intention for CTP. Finally entire results of T₁, through T₂ which handled the relationship of other CTP's consuming factors, depicted that the satisfaction on CTP affected to repurchasing intention at the T₁ point as well as affected to repurchasing intention at the T₂ point. The repurchasing intention of CTP at the point of T₁, was important effect on that of the point of T₂. As a result, We found that the manipulated variables worked between the T₁ and T₂.

Surgical Treatment of Late Presented Displaced Lateral Condylar Fracture of the Humerus in Children

Ki Cheor Bae(배기철),Kwang Soon Song(송광순),Chul Hyung Kang(강철형),Byung Woo Min(민병우),Chul Hyun Cho(조철현),Hyub Sa-Kong(사공협) 대한정형외과학회 2008 대한정형외과학회지 Vol.43 No.1

목적: 3주 이상 지연 발현된 전위된 소아 상완골 외과 골절에 대해 관혈적 정복 및 내고정술이 가능한지 그리고 최대 언제까지 치료가 지연되어도 골 이식 없이 관혈적 정복 및 내고정이 가능한지를 알아보고자 한다. 대상 및 방법: 3주 이상 지연 발현되었고 2.5 ㎜ 이상 전위된 소아 상완골 외과 골절에 대해 관혈적 정복 및 내고정술을 시행한 8예를 대상으로 하였다. 결과: 임상적 치료 결과는 우수가 6예, 양호가 2예였다. 수술 후 불유합이나 무혈성 괴사 같은 심한 합병증은 전 예에서 관찰되지 않았으나 2예에서 경도의 물고기-꼬리 변형과 외과 골편의 과성장으로 인한 경도의 운반각 소실이 있었다. 결론: 지연 발현된 소아 상완골 외과 골절에서 무혈성 괴사의 위험성 없이 관혈적 정복을 시행할 수 있는 허용 기간으로 3주는 너무 짧다고 생각되며, 최대 5주 혹은 그이상도 수술적 치료를 통하여 양호한 결과를 얻을 수 있을 것으로 생각된다. Purpose: To determine whether late open reduction and internal fixation (ORIF) of a lateral condylar fracture (LCF) after 3 weeks is possible, and to determine the latest time for ORIF without a bone graft. Materials and Methods: Eight children underwent late ORIF (>3 weeks) of a displaced LCF (>2.5 ㎜) of the humerus between 3 weeks and 5 weeks after injury. Results: Clinically, results were excellent in 6 cases and good in 2 cases. There was no serious complication, including nonunion and avascular necrosis (AVN), though 2 cases had a slight fishtail deformity and mild carrying angle loss due to overgrowth of the lateral condyle fragment. Conclusion: We believe that 3 weeks is too short to deny open reduction and anatomic reduction for fear of AVN of a late presented lateral condyle fracture of the humerus. The latest time for ORIF in late presented LCF in children is around 5 weeks, and surgical treatment may even be possible after greater delays.

IoT 보안 응용을 위한 경량 블록 암호 CLEFIA의 효율적인 하드웨어 구현

배기철,신경욱,Bae, Gi-chur,Shin, Kyung-wook 한국정보통신학회 2016 한국정보통신학회논문지 Vol.20 No.2

경량 블록 암호 알고리즘 CLEFIA의 효율적인 하드웨어 설계에 대하여 기술한다. 설계된 CLEFIA 보안 프로세서는 128/192/256-비트의 세 가지 마스터키 길이를 지원하며, 변형된 GFN(Generalized Feistel Network) 구조를 기반으로 8-비트 데이터 패스로 구현되었다. 라운드키 생성을 위한 중간키 계산용 GFN과 암호 복호 라운드 변환용 GFN을 단일 데이터 프로세싱 블록으로 구현하여 하드웨어 복잡도를 최소화하였다. 본 논문의 GFN 블록은 라운드 변환과 128-비트의 중간 라운드키 계산을 위한 4-브랜치 GFN과 256-비트의 중간 라운드키 계산을 위한 8-브랜치 GFN으로 재구성되어 동작하도록 설계되었다. Verilog HDL로 설계된 CLEFIA 보안 프로세서를 FPGA로 구현하여 정상 동작함을 확인하였다. Vertex5 XC5VSX50T FPGA에서 최대 112 MHz 클록으로 동작 가능하며, 마스터키 길이에 따라 81.5 ~ 60 Mbps의 성능을 갖는 것으로 평가되었다. This paper describes an efficient hardware implementation of lightweight block cipher algorithm CLEFIA. The CLEFIA crypto-processor supports for three master key lengths of 128/192/256-bit, and it is based on the modified generalized Feistel network (GFN). To minimize hardware complexity, a unified processing unit with 8 bits data-path is designed for implementing GFN that computes intermediate keys to be used in round key scheduling, as well as carries out round transformation. The GFN block in our design is reconfigured not only for performing 4-branch GFN used for round transformation and intermediate round key generation of 128-bit, but also for performing 8-branch GFN used for intermediate round key generation of 256-bit. The CLEFIA crypto-processor designed in Verilog HDL was verified by using Virtex5 XC5VSX50T FPGA device. The estimated throughput is 81.5 ~ 60 Mbps with 112 MHz clock frequency.

무인기용 탑재 데이터링크 안테나 시스템에 관한 연구

여수철(Su-Cheol Yeo),강병욱(Byoung-Wook Kang),배기형(Ki-Hyeong Bae),윤창배(Chang-Bae Yoon) 한국전자통신학회 2020 한국전자통신학회 논문지 Vol.15 No.1

In this paper, we studied on-board antenna(primary link/secondary link/satellite link) used in UAV Data-link system. As a result, it is ideal to configure the Data-link as a triple link to secure the flight stability of the UAV, but the communication link should be configured according to the operating platform. As a result of overseas R&D trend analysis, the on-board Data-link antenna is installed and operated in a location where it is easy to secure LOS. The primary link consists of a directional antenna for basic operation and an omni-directional antenna for emergency operation. The secondary link uses a monopole/dipole antenna in the UHF/C band. Satellite link has been developed to apply phased array antenna to improve UAV operability. 본 논문에서는 UAV 데이터링크 시스템에 사용되는 탑재 안테나(1차링크/2차링크/위성링크)에 대해 연구하였다. 연구결과, UAV의 비행 안정성을 확보하기 위해 데이터링크는 3중링크로 구성하는 것이 이상적이나 운용 플랫폼에 맞게 통신링크를 구성해야 한다. 해외 연구개발 동향 분석결과, 탑재 데이터링크 안테나는 LOS 확보가 용이한 위치에 장착되어 운용되고 있다. 1차링크는 기본운용을 위한 지향성 안테나, 비상운용을 위한 무지향성 안테나로 구성하며, 2차링크는 UHF/C 대역에서 모노폴/다이폴 구조의 안테나를 사용한다. 위성링크는 UAV의 운용성 향상을 위해 위상배열안테나를 적용하는 추세로 발전하고 있다.