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魯迅新興木刻版畫運動對80年代後中國現實主義版畫的影響 -現代四名中國版畫家中心-
안휘 중앙대학교 외국학연구소 2021 외국학연구 Vol.- No.55
This paper is composed of three parts in order to discuss the influence of Xinxing Muke Yundong upon the development of Chinese Realism printing. European Enlightenment and Russian Social Realism have been affected Chinese Social Realism, and, especially in 1930, Luxun–inspired Xinxing Muke Yundong(Wooden Printing Movement) opened the world of modern printing in China,so that the 1st developing stage of modern printing emerged in China, and reared up a set of critical printing artists. In the long span of modern printing history in China, the idea and creative form of Realism in Chinese art world were recognized as new, and thus the artists reconsidered the horizon of art. On the succession and recreation of Xinxing Muke Yundong, there continued to show up new phases for each stage, and finally there was a gigantic influence upon the printing through the endless exploitation with respect to Chinese Social Realism. The 1st chapter was written on the definition of Xinxing Muke Yundong-inspired Realism;The 2nd chapter was written on the influence upon the developing stages of Chinese Realism printing by Xinxing Muke Yundong, which is divided into four periods such as Germ period, Exploration period, Transience period, Transformation period. This influence underwent a big change at the moment of the early 1980s, on the causes of which I analyzed in the 3rd chapter. the four famous printing artists accepted, practiced, explored, and inherited down Luxun’s precept and practice from his Xinxing Muke Yundong during its history of 90 years more. Thus it resulted in the endless blooming of Chinese Realism printing, along with the exact understanding of Luxun’s printing theory. In closing, their creating practice having been lasted for long-term period can not be separated from the ingredients such as his idea, technique, artistic culture, etc.
휴대용 심전도 측정장치를 위한 실시간 QRS-complex 검출 알고리즘 개발
안휘,심형진,박재순,임종태,정연호 대한의용생체공학회 2022 의공학회지 Vol.43 No.4
In this paper, we present a QRS-complex detection algorithm to calculate an accurate heartbeat and clearly recognize irregular rhythm from ECG signals. The conventional Pan-Tompkins algorithm brings false QRS detection in the derivative when QRS and noise signals have similar instant variation. The proposed algorithm uses amplitude differences in 7 adjacent samples to detect QRS-complex which has the highest amplitude variation. The calculated amplitude is cubed to dominate QRS-complex and the moving average method is applied to diminish the noise signal’s amplitude. Finally, a decision rule with a threshold value is applied to detect accurate QRS-complex. The calculated signals with Pan-Tompkins and proposed algorithms were compared by signal-to-noise ratio to evaluate the noise reduction degree. QRS-complex detection performance was confirmed by sensitivity and the positive predictive value(PPV). Normal ECG, muscle noise ECG, PVC, and atrial fibrillation signals were achieved which were measured from an ECG simulator. The signal-to-noise ratio difference between Pan-Tompkins and the proposed algorithm were 8.1, 8.5, 9.6, and 4.7, respectively. All ratio of the proposed algorithm is higher than the Pan-Tompkins values. It indi- cates that the proposed algorithm is more robust to noise than the Pan-Tompkins algorithm. The Pan-Tompkins algo- rithm and the proposed algorithm showed similar sensitivity and PPV at most waveforms. However, with a noisy atrial fibrillation signal, the PPV for QRS-complex has different values, 42% for the Pan-Tompkins algorithm and 100% for the proposed algorithm. It means that the proposed algorithm has superiority for QRS-complex detection in a noisy environment.
아키텍처 변환 패턴을 이용한 소프트웨어 시스템 진화 프레임워크
박태현,안휘,강성원,박종빈,황상철,Park, Taehyun,Ahn, Hwi,Kang, Sungwon,Park, Jongbin,Hwang, Sangcheol 한국정보과학회 소프트웨어공학 소사이어티 2013 소프트웨어공학회지 Vol.26 No.1
소프트웨어 시스템 진화는 소프트웨어 시스템의 유지보수의 일종으로 계획적이고 체계적인 유지보수 프로세스이다. 소프트웨어 진화 연구는 기존 시스템의 비용편익 분석을 통해 시스템의 유지가치에 대한 판단 근거를 제공하며, 아키텍처를 기반으로 하는 진화는 반복적인 진화 작업의 자동화를 가능케 하여 유지보수 비용 감소를 가능하게 해주는 연구이다. 본 논문에서는 아키텍처 변환패턴을 이용한 소프트웨어 시스템 진화 프레임워크를 제안한다. Software System Evolution is more planned and systematic maintenance process as well as a type of maintenance. The research of software evolution provides basis of decisions for maintenance value through cost-benefit analysis of legacy system and architecture-based software evolution enables engineers to reduce maintenance cost by automation of repetitive evolution tasks. This paper proposes a framework for software system evolution using architectural transformation pattern.
블랜칭법으로 희생한 4종 식용 곤충의 냉장 저장 중 산화 안정성
손양주,안휘,김수희,박효남,최수영,이동규,김안나,황인경,Son, Yang-Ju,Ahn, Whee,Kim, Soo-Hee,Park, Hyo-Nam,Choi, Soo-Young,Lee, Dong-Gue,Kim, An-Na,Hwang, In-Kyeong 한국식품영양학회 2016 韓國食品營養學會誌 Vol.29 No.6
Edible insects have gained recognition worldwide as complementary protein sources. Recently, four edible insects were newly allowed to be used as food materials in Korea: the mealworm (Tenebrio molitor), the cricket (Velarifictorus asperses), the white-spotted flower chaffer beetle larva (Protaetia brevitarsis seulensis), and the rhinoceros beetle larva (Allomyrina dichotoma). In this study, we evaluated the oxidative stabilities of these four edible insects during cold storage. The insects were sacrificed by blanching for 3 minutes in boiling water. The blanched insects were then stored at $4^{\circ}C$ in an incubator for 42 days. The color values, titratable acidity, peroxide values, acid values, TBARS, contents of VBN, and total plate counts of the insects were measured at days 0, 2, 4, 7, 10, 14, 21, 28, 35, and 42, respectively. Blanching decreases oxidative stresses during storage. At day 0, the white-spotted flower chaffer beetle larva showed the highest values for acid value, TBARS, VBN, and microbial counts. Most of the oxidative indicators were significantly changed at day 14 in all four insects, possibly related with the growth on all microbial plates. Based on microbial safety and the oxidative stabilities of lipids and proteins, optimal storage conditions for the cricket, the white-spotted flower chaffer beetle larva, and the rhinoceros beetle larva were 10~14 days at $4^{\circ}C$. Likewise, the mealworm showed rapid oxidation after day 14, but poor qualities were not observed until day 28.
국산 브레이크 다이나모미터의 인식개선을 위한 신뢰성 비교/검증 연구
장재영(Jae Young Jang),이현욱(Hyun Wook Lee),안휘(Hwi Ahn),김수민(Soo Min Kim),한상욱(Sang Wook Han) 한국자동차공학회 2023 한국자동차공학회 부문종합 학술대회 Vol.2023 No.5
자동차에서 브레이크는 가장 중요한 안전부품중 하나로, 차량의 운전자가 원하는 시점에 차량의 속도를 감속하거나 정지시키는 역할을 수행한다. 가장 널리 활용되는 디스크 브레이크는 브레이크 패드가 디스크에 압착되어 마찰을 통한 열에너지를 발생시키며 차량을 감속시킨다. 이 때 과도한 열이 발생한다면 브레이크 시스템의 성능 저하를 야기 할 수 있으므로 엄격한 규격에 따른 평가/인증과정이 요구된다. 현재 자동차 브레이크 평가 분야에서는 해외의 L사가 제작한 브레이크 다이나모미터가 전 세계적으로 널리 활용되고 있으며, 이를 제외한 제작사의 평가 장비는 시험 데이터의 정확도와 상관없이 신뢰성 검증이 요구되고 있는 현실이다. 본 연구의 목적은 L사의 평가 장비와 연구원 내에서 보유 중인 A사의 평가 장비를 활용하여 동일한 평가를 진행하고 마찰계수등의 결과 데이터를 비교/검증하는 데 있다.