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- 저자 : 김경록(Kim, Kyeong-Lok) (검색결과 270 건)
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김현수 ( Hyun Soo Kim ),천종운 ( Jong Woon Cheon ),김민수 ( Min Su Kim ),정창길 ( Chang Kil Jung ),김경록 ( Kyung Rok Kim ),최재원 ( Jae Won Choi ),강동우 ( Dong Woo Kang ),김선영 ( Sun Young Kim ) 대한소화기학회 2013 대한소화기학회지 Vol.61 No.2
Hyun Soo Kim, Jong Woon Cheon, Min Su Kim, Chang Kil Jung, Kyung Rok Kim, Jae Won Choi, Dong Woo Kang and Sun Young Kim1 Departments of Internal Medicine and Pathology1, DongKang Medical Center, Ulsan, Korea Actinomycosis is a chronic suppurative disease and caused by Actinomycosis species, principally Actinomyces israelii, which are part of the normal inhabitant on the mucous membrane of the oropharynx, gastrointestinal tract, and urogenital tract. It usually affects cervicofacial, thoracic and abdominal tissue. Cervicofacial type has the highest percentage of occurrence with 50%. Actinomycosis frequently occurs following dental extraction, jaw surgery, chronic infection or poor oral hygiene. It may also be considered as an opportunistic infection in immunocompromised patients such as malignancy, human immunodeficiency virus infection, diabetes mellitus, steroid usage or alcoholism. But, actinomycosis rarely occurs in adults with normal immunity and rare in the esophagus. We report an unusual case of esophageal actinomycosis which was developed in a patient with normal immunity and improved by therapy with intravenous penicillin G followed oral amoxicillin, and we also reviewed the associated literature.
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시뮬레이션과 다중 회귀모형을 이용한 동시조달수리부속 최적화
김경록,용화영,권기상,Kim, Kyung-Rok,Yong, Hwa-Young,Kwon, Ki-Sang 한국시뮬레이션학회 2012 한국시뮬레이션학회 논문지 Vol.21 No.3
Recently, the study in efficient operation, maintenance, and equipment-design have been growing rapidly in military industry to meet the required missions. Through out these studies, the importance of Concurrent Spare Parts(CSP) are emphasized. The CSP, which is critical to the operation and maintenance to enhance the availability, is offered together when a equipment is delivered. Despite its significance, th responsibility for determining the range and depth of CSP are done from administrative decision rather than engineering analysis. The purpose of the paper is to optimize the number of CSP per item using simulation and multiple regression. First, the result, as the change of operational availability, was gained from changing the number of change in simulation model. Second, mathematical regression was computed from the input and output data, and the number of CSP was optimized by multiple regression and linear programming; the constraint condition is the cost for optimization. The advantage of this study is to respond with the transition of constraint condition quickly. The cost per item is consistently altered in the development state of equipment. The speed of analysis, that simulation method is continuously performed whenever constraint condition is repeatedly altered, would be down. Therefore, this study is suitable for real development environment. In the future, the study based on the above concept improves the accuracy of optimization by the technical progress of multiple regression.
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동결-젤 주조 공정 기반 삼차부틸알코올을 이용한 단일방향 기공구조를 가지는 이상인산칼슘 세라믹 지지체의 제조 및 특성평가
김경록,옥경민,김동현,박홍채,윤석영,Kim, Kyeong-Lok,Ok, Kyung-Min,Kim, Dong-Hyun,Park, Hong-Chae,Yoon, Seog-Young 한국세라믹학회 2013 한국세라믹학회지 Vol.50 No.4
Porous biphasic calcium phosphate scaffolds were fabricated by a freeze-gel casting technique using a tertiary-butyl alcohol (TBA)-based slurry. After sintering, unidirectional macropore channels of scaffolds aligned regularly along the TBA ice growth direction were tailored simultaneously with micropores formed in the outer wall of the pore channels. The crystallinity, micro structure, pore configuration, bulk density, and compressive strength for the scaffolds were investigated with X-ray diffractometery, scanning electron microscopy analysis, a water immersion method, and a universal test machine. The results revealed that the sintered porosity and pore size generally resulted in a high solid loading which resulted in low porosity and small pore size, which relatively increased the higher compressive strength. After being sintered at $1100-1300^{\circ}C$, the scaffolds showed an average porosity and compressive strength in the range 35.1-74.9% and 65.1-3.0 MPa, respectively, according to the processing conditions.
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김경록,이병희,유효식,Kim, Kyung-Rok,Lee, Byong-Hi,Yoo, Ho Sik 대한상하수도학회 2000 상하수도학회지 Vol.14 No.1
Chlorine is widely used as a disinfectant in drinking-water systems throughout the world. Chlorine residual was used as an indicator for prediction of water quality in water distribution systems. The variation of chlorine residual in drinking water distribution systems of Suwon city was simulated using EPANET. EPANET is a computerized simulation model which predicts the dynamic hydraulic and water quality behavior within a water distribution system operating over an extended time period. Sampling and analysis were performed to calibrated the computer model in 1999 (Aug. Summer). Water quality variables used in simulations are temperature, roughness coefficient, pipe diameter, pipe length, water demand, velocity and so on. Extended water residence time affected water quality due to the extended reaction time in some areas. All area showed the higher concentration of chlorine residual than 0.2mg/l(standard). So it can be concluded that any area in Suwon city is not in biological regrowth problem. Rechlorination turned out to be an useful method for uniform concentration of free chlorine residual in distribution system. The cost of disinfectant could be saved remarkably by cutting down the initial chlorine concentration to the level which guarantees minimum concentration (0.2mg/l) throughout the distribution system.
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김경록,송석일,곽윤식,Kim Kyoung-Rok,Song Seok-Il,Kwak Yoon-Sik 한국정보통신학회 2005 한국정보통신학회논문지 Vol.9 No.3
본 논문에서는 기존의 웹 하드디스크보다 쉽게 기능을 확장할 수 있고, 웹에서의 일반 어플리케이션을 보다 좀 더 간편하게 사용자의 요구에 맞도록 커스터마이징이 가능한 웹 스토리지 기반의 그룹오피스 시스템을 설계하고 구현하였다. 제안하는 웹스토리지는 다수의 스토리지 서버가 모여서 구성되는 분산 시스템이다 이 웹스토리지는 사용자의 위치에 따라 서비스해 주는 서버를 달리하는 방법을 제공하여 보다 빠른 스토리지 서비스가 가능하다. In this paper, we design and implement a distributed web-storage and a group office system based on the distributed web-storage. It is easier to customize the proposed group office according to user's demands than existing web-based applications. Our proposed web-storage is distributed system which consists of multiple storage servers. The web-storage provides storage with considering the user's location so as to provide fast storage service.
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디지털 인상법과 전통적 인상법의 정확도 비교: 체계적 고찰
김경록,서권수,김선재,Kim, Kyoung-Rok,Seo, Kweonsoo,Kim, Sunjai 대한치과보철학회 2018 대한치과보철학회지 Vol.56 No.3
Purpose: This study systematically examines literatures on the suitability of prostheses and accuracy of obtained impressions to see if digital impressions using intraoral scanners can replace traditional impressions. Materials and methods: A MEDLINE/PubMed search and manual search was performed for studies written in English about accuracy of digital impression published in dental journals from August 1, 1997, to July 31, 2017. Depending on criteria, the data for the selected articles were independently organized into standardized spreadsheets by 2 reviewers. Results: Among the total 35 studies met the inclusion criteria, there were 26 studies comparing the suitability of prostheses, and 9 studies comparing the accuracy of impressions through scan data without prostheses. Most studies used prostheses to compare the accuracy of impression techniques. Conclusion: This review suggests that making single crown or mesio-distally short prostheses with digital impressions is clinically reliable in natural teeth. However, there is still a limit to making mesio-distally long prostheses with digital impressions from the lack of related studies. Digital impression cannot fully replace traditional impressions in implant prostheses yet.
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베흐체트병에서 폐동맥 협착에 의한 중증 폐동맥 고혈압의 풍선 성형술
김경록 ( Kyung Rok Kim ),김형준 ( Hyoung Jun Kim ),김민수 ( Min Su Kim ),배수경 ( Soo Kyung Bae ),김현수 ( Hyun Soo Kim ),허기환 ( Ki Hwan Hur ),강동우 ( Dong Woo Kang ) 대한내과학회 2013 대한내과학회지 Vol.84 No.1
Pulmonary artery stenosis that causes pulmonary hypertension is usually observed in congenital anomalies and is seldom observed in adults. A 47-year-old female patient came to the hospital for aggravated dyspnea and peripheral edema. Severe pulmonary hypertension was found on an echocardiography examination, along with dilation of the main pulmonary artery and alias flow at the bifurcation sites of both pulmonary arteries. Under coronary angio-computed tomography, 70% high grade stenosis was observed on both sides of the proximal pulmonary arteries without showing atherosclerotic plaque or a thrombus. The patient`s symptoms improved after performing pulmonary artery angiography and angioplasty. Thus, we report our experience of a patient with Behcet`s disease and severe pulmonary hypertension caused by pulmonary artery stenosis, which was treated with percutaneous pulmonary angioplasty. (Korean J Med 2013;84:85-90)
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