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역행성 골수강 내 금속정을 이용한 상완골 간부 골절의 치료
최기범 ( Ki Bum Choi ),강수환 ( Soo Hwan Kang ),이윤민 ( Yoon Min Lee ),송석환 ( Seok Whan Song ),김연준 ( Youn Jun Kim ) 대한골절학회 2013 대한골절학회지 Vol.26 No.4
목적: 상완골 간부 골절에서 주두와의 삽입부를 이용한 역행적 교합성 골수강 내고정술의 결과에 대하여 보고하고자 한다. 대상 및 방법: 2005년 4월부터 2012년 9월까지 가톨릭대학교 여의도성모병원 정형외과에서 상완골 간부 골절에서 역행적 교합성 골수내정을 이용하여 치료한 22예를 대상으로 임상적 및 방사선학적 결과를 분석하였다. 결과: 평균 골유합기간은 5.8개월(4-11개월)이었다. 1예에서 수술 도중 외과의 골절이 발생하여 강선술 등의 추가적인 내고정을 시행하였고 수술 후 2예에서 상완골 간부의 지연유합이 발생하였으나 골이식술을 시행하여 골유합을 얻었으며, 2예에서 불유합이 발생하였다. 술 후 견관절의 운동제한 및 통증은 없었으며 주관절은 8예에서 평균 6.5도의 굴곡 강직과 평균 약 131도의 운동 범위를 보였다. 결론: 동반된 신경 및 혈관 손상이 없는 상완골 간부 골절에서 보다 안전한 원위 골수강 삽입부를 통한 역행적 교합성 골수강 내고정술은 과상부 골절 및 삽입부 주위 피질골 골절의 위험을 줄일 수 있고 술 후 좋은 결과를 얻을 수 있는 술식이라 생각한다. Purpose: The purpose of this study was to report the outcome of treatment of humeral shaft fracture with retrograde intramedullary nail of advanced insertion opening. Materials and Methods: From April 2005 and August 2012, 22 patients with a humeral shaft fracture were treated by a single surgeon using the technique of retrograde intramedullary nail at Department of Orthopedic Surgery, Yeouido St. Mary`s Hospital (Seoul, Korea). To avoid causing fractures at the insertion site, the entry point was more distally located than conventionally, and was extended proximally to include the proximal marginal cortex of the olecranon fossa. The outcome was evaluated clinically and radiologically. Results: The mean period of achievement of bony was 5.8 months (4-11 months). Additional fixations were needed in one patient with intraoperative lateral condylar fracture and 2 patients with postoperative nonunion. There were no limitations of movement or pain in the shoulder joint, and 8 cases had a 6.5o flexion contracture on average. Conclusion: This retrograde intramedullary fixation technique using a distal entry portal near the olecranon fossa is particularly useful in humeral shaft fractures without a neurovascular injury. The risk of an intraoperative fracture (supracondylar fracture or fracture around the entry portal) can be decreased using this treatment. We recommend this technique because of the safety and the satisfactory outcome.
반응표면분석법을 이용한 김(Pyropia sp.)스낵의 유탕공정 최적화
최기범 ( Gibeom Choi ),김동민 ( Dongmin Kim ),최윤진 ( Yunjin Choi ),김선봉 ( Seon-bong Kim ),박주동 ( Joodong Park ),배성아 ( Sung-a Bae ),배기일 ( Ki-il Bae ),조승목 ( Suengmok Cho ) 한국수산과학회(구 한국수산학회) 2020 한국수산과학회지 Vol.53 No.6
Laver Pyropia sp. is the most exported seafood in Korea and is one of the most consumed edible seaweeds. The export of laver has been centered on seasoned laver products; of note, laver snack products coupled with rice papers or glutinous rice paste are becoming more popular in Western countries. These laver snacks are manufactured using a deep frying process. Therefore, the frying conditions affect the physicochemical and sensory characteristics of fried laver snacks. In this study, we optimized the deep-frying conditions for laver snacks with gelatinized rice dough using a response surface methodology. The frying temperature (X<sub>1</sub>, 190-220°C) and frying time (X<sub>2</sub>, 10-30 sec) were selected as independent variables; the dependent variables were the overall acceptance (Y<sub>1</sub>, points), hardness (Y<sub>2</sub>, N), and oil content (Y<sub>3</sub>, %). The optimal values of the frying temperature (X<sub>1</sub>) and time (X<sub>2</sub>) as per the overall acceptance (Y<sub>1</sub>) were 208°C and 23.1 sec, respectively. The predicted overall acceptance (Y<sub>1</sub>=8.0 points), hardness (Y<sub>2</sub>=98.74 N), and oil content (Y<sub>3</sub> =27.69%), were similar to the experimental values under the optimal conditions. Overall, the acceptance was inversely proportional to hardness; the decrease in hardness caused an increase in the crispiness of the laver snacks.
벤치마크 데이터 매칭을 이용한 React 기반 PC 부품 조합 추천 웹 서비스 설계 및 구현
최기범(GiBeom Choi),정승현(Seung Hyun Jeong),김태훈(Tae Hun Kim),김병만(Byeong Man Kim),김성렬(Sungryul Kim) 한국정보기술학회 2021 Proceedings of KIIT Conference Vol.2021 No.11
기존의 PC 추천 웹사이트들은 상업에서의 비중을 크게 두어 컴퓨터에 대한 지식이 부족한 사람들에게 편의성을 제공하지 못했다. 각각의 부품에 대한 벤치마크(benchmark)를 참고하여 자신에게 해당되는 정보만 기입하면 간단히 PC 부품들의 조합과 해당 조합의 호환성을 체크할 수 있다. 이 논문에서는 벤치마크와 부품들의 데이터 매칭(data matching)을 통해 사용자의 조건에 맞는 PC 부품들의 조합을 만들어내는 웹 서비스를 설계 구현방법을 제시한다. Existing PC recommendation websites have not been able to provide convenience to those who lack knowledge of computers due to their large proportion in commerce. By referring to the benchmark for each part and filling out the information that corresponds to you, you can simply check the compatibility of the combination of PC parts and the combination. This paper presents a design implementation method of a web service that creates a combination of PC parts that meets the user"s conditions through data matching between benchmarks and parts.
이윤민,송석환,최기범,이승구,Lee, Yoon-Min,Song, Seok-Whan,Choi, Ki-Bum,Rhee, Seung-Koo 대한미세수술학회 2011 Archives of reconstructive microsurgery Vol.20 No.2
Purpose: As clinical manifestations of thoracic outlet syndrome are vague pain or symptoms in upper extremity, the diagnosis of the disease is delayed or misdiagnosed as cervical HNP, shoulder pathologies, or peripheral neuropathies. In that reason, many patients spend time for unnecessary or ineffective treatments. We report the results of our thoracic outlet syndrome cases, which were treated by conservative care or surgical treatment. Materials & Methods: Twenty five cases, diagnosed as thoracic outlet syndrome since 1999, were reviewed retrospectively. Physical examinations including Adson's and reverse Adson's test, hyperabduction test, costoclavicular maneuver, and Roo's test, plain radiography of shoulder and cervical spine, MRI of neck or brachial plexus, and EMG were checked. If subjective symptoms were not improved after conservative treatments over three months, surgical treatment were performed. Nine patients were performed operative treatment and the others had conservative treatment in outpatient clinic. Postoperative improvement of symptoms and the follow up period, and the results of conservative care were reviewed. Results: Among five physical examinations, mean 1.75 tests were positive, and EMG has little diagnostic value. MRI were performed in twenty cases and compression of brachial plexus were found in 6 cases (30%). Ten patients out of 16 conservative treatment group had excellent improvement of symptoms, and 5 had good results. Eight patients out of 9 operative treatment group had excellent improvement with mean 5.1 months of follow-up period. Conclusion: Diagnosis of thoracic outlet syndrome is difficult due to bizarre and vague symptoms. However if the diagnosis is suspected by careful physical examinations, radiologic studies, or nerve conduction studies, conservative care should be done as initial treatment and at least after three months, reassess the patient's condition. If the results of conservative treatment is not satisfactory and still the thoracic outlet syndrome is suspected, surgical treatment should be considered. Conservative treatment and operative technique are the valuable for the treatment of this disease.
신에너지전원이 연계된 배전계통의 전압조정시뮬레이터 개발에 관한 연구
김경범(Kim, Kyung-Bum),최기범(Choi, Gi-Bum),차민준(Cha, Min-Jun),노대석(Rho Dae-Seok) 한국산학기술학회 2008 한국산학기술학회 학술대회 Vol.- No.-
태양광, 풍력 등의 대체에너지전원의 개발 및 보급이 증가하는 추세에서 이들 소규모 전원이 도입되 는 배전계통의 환경 및 여건을 정비하는 것이 무엇보다 시급하고도 중요한 사항이라고 생각된다. 이들 배전계통의 환경 가운데 가장 중요한 것 중의 하나가 수용가의 전압을 일정한 범위 내로 유지하는 것 이다. 전력회사에서는 하계의 피크 부하기간 중에 지정된 고압선로의 직하와 말단의 전압을 측정하여 규정전압(전등 : 220±6%, 동력 : 380±10%)이내에 유지되는 가를 평가하여 산업자원부에 보고하도록 전기사업법에 규정되어 있을 정도로 중요한 목표관리 대상이다. 따라서, 배전계통의 전압조정 기술은 상당히 중요한 기술이므로, 본 논문에서는 분산전원이 배전계통에 연계되어 운용되는 경우, 전압조정 장치의 동작을 시뮬레이션 할 수 있는 시뮬레이터를 개발하여 수용가의 전압을 평가하고 개선하는 시스템을 개발하였다.
김성식(KIM S. S.),최기범(CHOI K. B.),김진호(KIM J. H.) 대한전자공학회 1992 대한전자공학회 학술대회 Vol.1992 No.10
The objective of cell operation in CIM is to maximize system efficiency, not the cell itself. We introduce a cell operation scheme that pursues the direction. For specific cases, work center and AS/RS are closely investigated. Structures of their operation mechanism and methods of job scheduling are introduced along with an expert system developed for the scheme. The cell operation softwares developed are now under test at K. U. FMS, a model CIM plant.