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Combining data를 적용한 단일 표본화 방법론 연구
백승준,손영갑,이승영,안만기,김청식,Back, Seungjun,Son, Youngkap,Lee, Seungyoung,Ahn, Mahnki,Kim, Cheongsig 한국군사과학기술학회 2014 한국군사과학기술학회지 Vol.17 No.5
Combining similar data provides larger data sets through conducting test for homogeneity of several samples under various production processes or samples from different LOTs. The test for homogeneity has been applied to either variable or attribute data, and for variable data set physical homogeneity has been tested without consideration of the specification to the set. This paper proposes a method for test of homogeneity based on quality level through using both variable data and the specification. Quality-based test for homogeneity as a way of combining data is implemented by test for coefficient of variation in the proposed method. The method was verified through the application to the data set in open literature. And possibility to combine performance data for various types of thermal battery was discussed in order to estimate operation reliability.
백승준,허찬영,오갑성,Baek, Seong-Jun,Heo, Chan-Yeong,Oh, Kap-Sung 대한미세수술학회 1999 Archives of reconstructive microsurgery Vol.8 No.2
The lower extremity injuries are extremely increasing with the development of industrial & transportational technology. For the lower extremity injuries that result from high-energy forces, particularly those in which soft tissue and large segments of bone have been destroyed and there is some degree of vascular compromise, the problems in reconstruction are major and more complex. In such cases local muscle coverage is probably unsuccessful, because adjacent muscles are destroyed much more than one can initially expect. Reconstruction of the lower extremity has been planned by dividing the lower leg into three parts traditionally The flaps available in each of the three parts are gastrocnemius flap for proximal one third, soleus flap for middle one third and free flap transfer for lower one third. Microvascular surgery can provide the necessary soft tissue coverage from the remote donnor area by free flap transfer into the defect. Correct selection of the appropriate recipient vessels is difficult and remains the most important factor in successful free flap transfer. Vascular anastomosis to recipient vessels distal to the zone of injury has been advocated and retrograde flow flaps are well established in island flaps. Retrograde flow anastomosis could not interrupt the major blood vessels which were essential for survival of the distal limb, the compromise of fracture or wound healing might be prevented. During 5 years, from March 1993 to Feb. 1998, we have done 68 free flap transfers in 61 patients to reconstruct the lower extremity. From analysis of the cases, we concluded that for the reconstruction of the lower extremity, free flap transfer yields a more esthetic and functional results.
백승준,손영갑,김남진,권태수,Back, Seungjun,Son, Youngkap,Kim, Namjin,Kwon, Taesoo 한국군사과학기술학회 2016 한국군사과학기술학회지 Vol.19 No.3
This paper shows storage life estimation of next IR(infrared) flare material through accelerated degradation tests. Three temperature conditions for the accelerated degradation tests are 55, 65 and $75^{\circ}C$. Six performances of IR flare material are burning time, IR peak/continuous Intensity, total energy of near/mid-IR and color ratio, and they were measured after the tests. Storage life of the IR flare material was estimated through both analyzing the degradation data of those performances and applying distribution-based degradation models to the data. Over 30 years of storage life at $20^{\circ}C$ is estimated in terms of IR peak intensity with reliability 0.99 and confidence level 99 %. Additionally, 10 years of storage period at $21^{\circ}C$ would be equivalent to 68 days of accelerated test at $65^{\circ}C$ from the activation energy in Arrhenius model.
백승준,김현석 한국항공우주학회 2015 한국항공우주학회 학술발표회 논문집 Vol.2015 No.11
본 논문에서는 관성항법장치의 자가진단시험 프로그램 개발에 대해서 기술하였다. 관성항법장치의 자가진단시험은 정상동작 여부를 판단하고 이를 외부로 전송하는 과정을 3단계로 분류하였으며 초기에 한번만 수행되는 자가진단시험 및 관성항법장치 운용시 연속적으로 수행되는 자가진단시험의 오류정보결과가 분류되지 않고 통합되어 외부로 전송될 수 있도록 프로그램을 설계하였으며 시험시 과거에 발생한 오류정보가 다른 변수로 저장되어 오류가 언제 발생하였는지를 확인할 수 있도록 자가진단시험 프로그램을 설계하였다. This paper describes and explains the design of Built-In Test program of the Inertial Navigation System. The Built-In Test could be determined that whether or not the Inertial Navigation System would be functional. Transmission process of the test results is categorized in three phases. It is designed that result of the Initial Built-In Test(IBIT) to be performed at initially once and results of the Continuous Built-In Test(CBIT) which executed during operation are integrated and, transmitted to the external. It is also designed that the result of the Built-In Test in the past, is stored in other variable to be able to verify whether an error has occurred.