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이상준 대한이비인후과학회 2008 대한이비인후과학회지 두경부외과학 Vol.51 No.1
Dermoid cysts in the head and neck area account for 7% of all dermoid cysts, with their predominant sites being orbital, oral and nasal regions (80%). Dermoid cysts of the parotid gland are extremely rare and only seven cases have been reported. Due to the rarity of the parotid dermoid cyst and diversity of parotid swellings, correct preoperative diagnosis is difficult. Imaging studies such as computed tomography, ultrasonography and magnetic resonance were inconclusive. Fine needle aspiration biopsy may be helpful. In this article, we report a case of parotid dermoid cyst with literature reviews. (Korean J Otorhinolaryngol-Head Neck Surg 2008;51:105-7)
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이상준 한국정보통신학회 2003 한국정보통신학회논문지 Vol.7 No.6
극한 프로그래밍은 빠르게 변화되는 사업 환경에 기민하게 대응하는 애자일 소프트웨어 개발 방법론 중에서 가장 대표적인 방법론이다. 소프트웨어 산업이 성숙됨에 따라 소프트웨어 품질 요소중 사용성이 점차 강조되고 있으나, 극한 프로그래밍에서 사용성을 확보하기 위한 노력이 부족한 실정이다. 극한 프로그래밍의 사용성 향상을 위하여 본 논문에서는 소프트웨어 생명주기를 조사, 계획, 릴리즈 반복, 제품화, 유지보수, 사망의 6단계로 정의한다. 사용성 평가를 위한 통합시험과 인수시험을 포함한 11개의 활동을 정의하여 사용성을 향상시킬수 있는 극한 프로그래밍 프로세서를 제안한다. 제안한 프로세서의 타당성을 4가지 측면에서 확인하였다. 제안한 프로세스는 극한 프로그래밍 프로세스가 인수시험 활동을 지원하도록 개선하였으며, 극한 프로그래밍 프로세스가 CMM 레벨4를 지원하도록 하며, CMM 품질보증 실무를 지원하도록 하였다. Extreme programming is the most representative methodology among agile software development methodologies which is agile in business environment which change fast. As software industry is matured, usability of software quality characteristics is emphasized gradually, but effort to obtain usability in extreme programming is insufficient. To improve usability of extreme programming, in this thesis, a software life cycle is defined by six phase as exploration, planning, iterations to release, productionizing, maintenance, and death phase. In this thesis, an extreme programming process which can improve usability is proposed by definition of 11 activities including integration testing and acceptance testing for usability testing, The proposed process is validated with four aspects. The proposed process is enhanced to support acceptance testing activity. The proposed extreme programming process is able to support CMM level 4 and quality assurance practice of CMM.
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Vortex-induced reconfiguration of a tandem arrangement of flexible cylinders
이상준,김정재,염은섭 한국풍공학회 2015 Wind and Structures, An International Journal (WAS Vol.21 No.1
Oscillating motions of flexible cylinders are associated to some extent with the aerodynamic response of plants. Tandem motions of reeds with flexible stems in a colony are experimentally investigated using an array of flexible cylinders made of polydimethylsiloxane (PDMS). Consecutive images of flexible cylinders subjected to oncoming wind are recorded with a high-speed camera. To quantify oscillating motions, the average bending angle and displacement of flexible cylinders are evaluated using point-tracking method and spectral analysis. The tandem motions of flexible cylinders are closely related to the flow characteristics around the cylinders. Thus, the dynamic motions of a tandem arrangement of flexible cylinders are investigated with varying numbers of cylinders arranged in-line, numbers of cylinders in a group (behaving like a single body), and Reynolds numbers (Re). When the number of cylinders in a group increases, the damping effect caused by the support of downstream cylinders is pronounced. These results would be provide useful information on the tandem-arranged design of complex structures and energy harvesting devices.
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