IABP 치험 [31례 보고

최준영 대한흉부심장혈관외과학회 1987 Journal of Chest Surgery (J Chest Surg) Vol.20 No.4

From December 1981 to June 1987, thirty one patients suffering from low output syndrome after cardiac operation received cardiac assist with intraaortic balloon pump. Fifteen patients survived [survival rate 48.4%]. After receiving assist with IABP, urine output increased, heart rate and central venous pressure decreased, reflecting improved myocardial performance. Poor preoperative hemodynamic and functional status resulted in poor survival despite of assist with IABP. Poor pre-IABP hemodynamic status also resulted in high mortality after assist with IABP. Our experience suggests that IABP should be introduced early in the course of worsening to get good result.

케냐의 차산업 동향

최준영 한국농촌경제연구원 2016 세계농업 Vol.191 No.-

Spatial Big Data Strategy for Smart Safer City in Connection with Citizen Participation

최준영,이정윤,안재성 국토지리학회 2020 국토지리학회지 Vol.54 No.2

Various studies have been performed to measure, monitor, and implement the sustainable development goals(SDGs) and new urban agenda (NUA) of the UN based on urban big data. This study proposes a spatial big data platform-based analysis framework that can measure and analyze indexes related to a safe city as an implementation of the SDGs andNUA and create the corresponding policies. This analysis framework utilizes the spatial big data platform as a diagnosticand analysis tool for evidence-based policy adoption and guarantees citizen participation by a community mapping technique.The case study carried out assessed the risk of pedestrians in Chungju city, Korea and selected CCTV locations, which weredetermined through the spatial data-based analysis of pedestrian road security. The results of the analysis were comparedwith the citizens’ opinions about dangerous areas. The results confirmed the feasibility of the analysis framework that linkscommunity mapping with the spatial big data platform and supports evidence-based policy adoption based on spatial bigdata. In the future, this analysis framework could be used as a reference framework for the adoption of evidence-basedpolicies and the implementation of urban big data platforms guaranteeing citizen participation. Various studies have been performed to measure, monitor, and implement the sustainable development goals (SDGs) and new urban agenda (NUA) of the UN based on urban big data. This study proposes a spatial big data platform-based analysis framework that can measure and analyze indexes related to a safe city as an implementation of the SDGs and NUA and create the corresponding policies. This analysis framework utilizes the spatial big data platform as a diagnostic and analysis tool for evidence-based policy adoption and guarantees citizen participation by a community mapping technique. The case study carried out assessed the risk of pedestrians in Chungju city, Korea and selected CCTV locations, which were determined through the spatial data-based analysis of pedestrian road security. The results of the analysis were compared with the citizens’ opinions about dangerous areas. The results confirmed the feasibility of the analysis framework that links community mapping with the spatial big data platform and supports evidence-based policy adoption based on spatial big data. In the future, this analysis framework could be used as a reference framework for the adoption of evidence-based policies and the implementation of urban big data platforms guaranteeing citizen participation.

TRPV1 Blocking Alleviates Airway Inflammation and Remodeling in a Chronic Asthma Murine Model

최준영,이화영,허정,김경훈,강지영,이진국,이숙영 대한천식알레르기학회 2018 Allergy, Asthma & Immunology Research Vol.10 No.3

Purpose: Asthma is a chronic inflammatory airway disease characterized by airway hyperresponsiveness (AHR), inflammation, and remodeling. There is emerging interest in the involvement of the transient receptor potential vanilloid 1 (TRPV1) channel in the pathophysiology of asthma. This study examined whether TRPV1 antagonism alleviates asthma features in a murine model of chronic asthma. Methods: BALB/c mice were sensitized to and challenged by ovalbumin to develop chronic asthma. Capsazepine (TRPV1 antagonist) or TRPV1 small interfering RNA (siRNA) was administered in the treatment group to evaluate the effect of TPV1 antagonism on AHR, airway inflammation, and remodeling. Results: The mice displayed increased AHR, airway inflammation, and remodeling. Treatment with capsazepine or TRPV1 siRNA reduced AHR to methacholine and airway inflammation. Type 2 T helper (Th2) cytokines (interleukin [IL]-4, IL-5, and IL-13) were reduced and epithelial cell-derived cytokines (thymic stromal lymphopoietin [TSLP], IL-33, and IL-25), which regulate Th2 cytokine-associated inflammation, were also reduced. Airway remodeling characterized by goblet cell hyperplasia, increased α-smooth muscle action, and collagen deposition was also alleviated by both treatments. Conclusions: Treatment directed at TRPV1 significantly alleviated AHR, airway inflammation, and remodeling in a chronic asthma murine model. The TRPV1 receptor can be a potential drug target for chronic bronchial asthma.

역제곱 비균일 양자화 기법을 활용한 심층신경망의 에너지 효율성 개선

최준영,유준혁 한국정보과학회 2020 정보과학회논문지 Vol.47 No.1

DNN's computational complexity makes it difficult for application to embedded devices of limited resources because the deep learning requires high performance computing power and consumes considerable energy. To mitigate this, this paper proposes an energy-efficient Inverse Power of Two(IPow2) nonuniform quantization technique to induce more sparsity than the existing quantization methods while reducing precision of weights, resulting in the reduction of computational complexity as well as energy consumption in DNN. Accuracy and energy efficiency of the proposed IPow2 are quantitatively validated by executing image classification task with data sets of CIFAR- 10/ImageNet through implementing the quantized AlexNet/VGGNet models of a variety of mapping policies. Experimental results show that the proposed IPow2 method consumes less energy by 63.2% and 66.5% while achieving minor accuracy loss by 2.2% and 2.5% respectively compared with the full precision one, in case of two-bits quantization in the AlexNet/VGGNet models. 심층신경망(DNN)의 연산 복잡성은 과도한 연산량과 에너지 소비를 초래하기 때문에 제한적인 자원을 가진 임베디드 디바이스로의 DNN 적용을 어렵게 만드는 주요한 요인이다. 이를 완화하기 위해 본 논문에서는 DNN의 가중치 정밀도를 감소시키면서 기존 양자화 기법에 비해 더 많은 희소성을 부여하여 연산량과 에너지 소비를 감소시킬 수 있는 역제곱 비균일 양자화 기법을 제안한다. 서로 다른 맵핑 정책을 가진 다양한 균일/비균일 양자화 기법을 AlexNet과 VGGNet 모델에서 구현하여 CIFAR-10과 ImageNet 데이터셋을 활용한 이미지 분류 작업을 통해 제안된 역제곱 양자화 기법의 정확도와 에너지 효율성을 입증하고, 이를 더욱 향상시킬 수 있는 추가적인 학습 기법도 제시한다. 실험 결과, 제안된 역제곱 비균일 기법으로 양자화된 AlexNet과 VGGNet 모델의 비트폭이 2인 경우에 완전 정밀도 기법에 비해 정확도는 각각 2.2%와 2.5%의 손실이 있지만, 에너지 효율성 측면에서는 완전 정밀도 대비 각각 63.2%와 66.5% 정도로 에너지 소비를 감소시켰다.

쓴 맛이 적은 다수성 느티만가닥버섯 신품종 ‘윤슬’

최준영,신복음,백일선,김연진,김정한,최종인,하태문,정구현 한국버섯학회 2022 한국버섯학회지 Vol.20 No.3

This study was conducted to diversify the cultivation of mushroom items and develop a competitive variety of Hypsizigus marmoreus. We focused on developing Hypsizigus marmoreus with lower bitterness, likable shape, and high yield. We have collected and tested characteristics of genetic resources from domestic and abroad since 2019. Breeding (2019), characterization (2020), productivity test (2021), and farm demonstration test (2021) have been sequentially conducted. We bred the new variety ‘Yunseul’ with unique traits. The optimal temperature for mycelial and fruit body growth were 22–25oC and 15– 18oC, respectively. It was similar to the control variety (Mangadak-2Ho) in the pileus form (hemispherical shape) and the cultivation period. However, it was thinner and longer than the control variety with the pileus diameter, thickness, stipe diameter, and length being 19.9 mm, 7.0 mm, 9.4 mm, and 86.3 mm, respectively. The effective number of fruit bodies was 47.8 in bottle cultivation, which was more than that of the control variety. The yield was 197.4 g/bottle (1,100 cc), which was 30% higher than the yield of the control variety, 151.9 g/bottle (1,100 cc). The parent and control varieties were also incubated alongside the new variety. The somatic incompatibility line was distinct. The band pattern in the mycelial DNA PCR reaction was different from that of the parent and control varieties, confirming the hybrid species.

자실체 발생이 안정적인 꽃송이버섯 신품종 ‘한여울’

최준영,최종인,백일선,신복음,김정한,하태문,정구현 한국버섯학회 2022 한국버섯학회지 Vol.20 No.3

This study was conducted to reduce the phenomenon of biased cultivation and to pursue the diversification of mushroom items. We focused on developing Sparassis latifolia varieties with a short cultivation period, stable pinheading, and a high yield. We have collected and determined the characteristics of genetic resources domestically and abroad since 2016. We bred the unique domestic variety, “Hanyeoul” and the results of this study are as follows. The optimal temperatures for mycelial growth and fruit body growth were 22~25oC and 19~21oC, respectively. The color of the pileus was pale-yellowish white, which was similar to the color of the control variety, “Neoul”. The number of days required for cultivation was 125 for bottle cultivation and 98~102 for bag cultivation, which was shorter than the number of days required for the control variety. Bottle cultivation took 39 days shorter for the new variety than the control variety. The fruiting body of the new variety was similar in size or larger than that of the control variety. The pinheading rate was more than 90% in bottle cultivation and bag cultivation, which was more stable than pinheading in the control variety. The yield was 79.1 g/bottle (1,100 cc) for bottle cultivation, which was 22.6% higher than the yield of the control variety, and 641.1~689.5 g/bag (2.6 kg) for bag cultivation, which 5.8~10.4% higher than yield of the control variety.

비트펄프 대체 밀짚펠렛 첨가에 따른 느타리 생육 특성

최준영,김정한,김연진,이채영,백일선,하태문,이찬중,임갑준 한국버섯학회 2022 한국버섯학회지 Vol.20 No.4

The present study investigated the optimum additive ratio of wheat straw pellet as a substitute for beet pulp during oyster mushroom cultivation. The chemical properties across treatments were pH of 4.8–5.5, total carbon content of 45.9–46.5%, total nitrogen content of 1.5–1.7%, and carbon-to-nitrogen ratio of 27.8–31.0. Mycelial growth was the fastest in a medium containing 20% wheat straw pellet (at 88.2 mm in ‘Heuktari’ and 70.3–79.6 mm in ‘Suhan-1Ho’); however, there were no significant differences in mycelial density among the treatments. The characteristics of fruiting bodies by variety were as follows. In ‘Heuktari’, the valid stipe number per bottle (1,100 cc) was 22.5 and yield was 177.1 g/1,100 cc in the mixed medium containing 10% wheat straw pellet, with the values being comparable to those of controls. In ‘Suhan-1Ho’, the valid stipe number per bottle (1,100 cc) was 14.0 and yield was 151.2 g/1,100 cc in the mixed medium containing 10% wheat straw pellet, with the values being comparable to those of controls.

시간별 기법을 이용한 단기풍력발전 예측

최준영,이송근 대한전기학회 2020 전기학회논문지 Vol.69 No.6

Wind power is intermittent and nonlinear. When the amount of power generation exceeding the margin of the power system generation is input from the wind power generator to the grid, disturbance may occur in the grid. Therefore, in order to operate a power system stable, it is necessary to accurately predict wind power generation. For stable system operation, short-term wind power prediction, that is, prediction of the amount of electrical power generated from 1 hour to several hours is required. In this paper, an LSTM model for each forecasted time was created and combined to predict the amount of wind power generation after 1 to 3 hours. The validity of the proposed model was proved by comparing and analyzing the prediction accuracy with the proposed model, LSTM model, and DBN model.

기후변화에 따른 NTA-ENSO 경년 변동성 변화에 대한 역학 이해

최준영,함유근 한국기상학회 2018 한국기상학회 학술대회 논문집 Vol.2018 No.4