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비정형 데이터 분석을 통한 선거 여론조사 예측력 개선 방안 연구
박선빈,김명준,Park, Sunbin,Kim, Myung Joon 한국통계학회 2018 응용통계연구 Vol.31 No.5
소셜 네트워크 서비스(social network service; SNS)는 개개인의 의견을 공유하거나 소통하는 일반적인 도구로 사용되고 있으며, 특히 정치적인 이슈의 전파 과정에서 타인과의 공유를 통하여 자신이 지지하는 후보에 대한 긍정적인 홍보 등을 통해 여론을 형성 또는 확장한다. 기존의 여론 조사 결과는 응답률, 표본 수집의 방식 등과 관련하여 예측의 정확성에 대한 끊임없는 논란이 되어왔다. 본 논문은 이러한 소셜 네트워크 서비스 상에 존재하는 수많은 비정형 데이터의 감성 분석을 통하여 여론조사의 예측력을 개선, 보완하는 방안을 제시하고자 한다. 제시하고자 하는 연구 내용은 비정형 데이터 크롤링 및 기존에 사용되던 감성 사전에 대한 추가적인 보정 과정을 포함하고 있으며, 이를 통하여 본 논문에서 제안하는 방식은 오차의 감소를 통하여 예측력을 개선하는 결과를 나타냈다. Social network services (SNS) have become the most common tool for the communication of public and private opinions as well as public issues; consequently, one may form or drive public opinions to advocate by spreading positive content using SNS. Controversy for survey data based opinion poll accuracy continues in relation to response rate or sampling methodology. This study suggests complementary measures that additionally consider the sentiment analysis results of unstructured data on a social network by data crawling and sentiment dictionary adjustment process. The suggested method shows the improvement of prediction accuracy by decreasing error rates.
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실시간 객체 검출 기술 YOLOv5를 이용한 스마트 엘리베이터 시스템에 관한 연구
박선빈,정유정,이다은,김태국,Sun-Been Park,Yu-Jeong Jeong,Da-Eun Lee,Tae-Kook Kim 한국사물인터넷학회 2024 한국사물인터넷학회 논문지 Vol.10 No.2
In this paper, a smart elevator system was studied using real-time object detection technology based on YOLO(You only look once)v5. When an external elevator button is pressed, the YOLOv5 model analyzes the camera video to determine whether there are people waiting, and if it determines that there are no people waiting, the button is automatically canceled. The study introduces an effective method of implementing object detection and communication technology through YOLOv5 and MQTT (Message Queuing Telemetry Transport) used in the Internet of Things. And using this, we implemented a smart elevator system that determines in real time whether there are people waiting. The proposed system can play the role of CCTV (closed-circuit television) while reducing unnecessary power consumption. Therefore, the proposed smart elevator system is expected to contribute to safety and security issues.
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에탄올 농도에 따른 머루(Wild Grape, Vitis coignetiae) 추출물의 폴리페놀 함량 및 항산화 활성
정현진(Hyun?Jin Jeong),박선빈(Seon?Bin Park),김선아(Suna Kim),김현구(Hyun?Ku Kim) 한국식품영양과학회 2007 한국식품영양과학회지 Vol.36 No.12
추출용매를 달리하여 마이크로웨이브로 추출한 머루의 생리활성을 측정하였다. 전자공여능, 아질산염 소거능은 모든 추출구에서 농도 의존적으로 활성이 증가하였고 폴리페놀도 농도 증가에 따라 함량이 높게 나타났다. 세 가지 추출 용매 중 50% 에탄올 추출 시 항산화 활성이 높았는데 이는 총 폴리페놀 함량 측정 결과와도 일치하여 머루의 항산화활성이 폴리페놀과 밀접한 관련이 있다고 사료된다. 전반적인 활성은 전자공여능이 약 13~101%로 특히 1.6 g/dL 농도의 50% 에탄올 추출물의 활성의 경우 1% L-ascorbic acid보다 우수했다. 아질산염 소거능은 pH가 낮을수록 활성이 높은 경향으로 pH 1.2에서 활성이 34~99%로 가장 높게 측정 되었다. 총 폴리페놀 함량은 농도에 따른 폴리페놀 함량의 차이가 컸으며 50% 에탄올 추출, 1.6 g/dL 농도에서 약 38.76 mM gallic acid equivalent로 가장 높았다. SOD 유사활성은 30~50%로 전자공여능이나 아질산염 소거능만큼 우수하진 않았지만 0.01% L-ascorbic acid보다 50%, 100% 에탄올 추출구에서 높은 활성을 보였다. 머루의 항산화 활성과 폴리페놀 함량은 밀접한 관련이 있는 것으로 보이며 폴리페놀 함량이 풍부한 머루를 이용한 항산화 건강기능성 식품 개발의 기초 자료로 제공하고자 하였다. As an oriental medicinal plant, wild grape (WG, Vitis coignetiae) has been known to contain abundant nutrients compared to grape (Vitis vinifera L.) and as a source of stilbenes, a kind of polyphenol. This study was performed to investigate the antioxidative activity of WG extracts by measuring electron donating ability (EDA), nitrite scavenging ability (NSA), super oxide dismutase (SOD)-like activity and total polyphenol content (TPC). The extracts were obtained using microwave-assisted extraction (microwave power: 90 W, extraction time: 5 min, extractant: water, 50 and 100% ethanol). EDAs, SOD-like activities and TPCs were the highest at 50% ethanol extracts while conversely lowest at 100% ethanol extracts. EDAs of 50% and 100% ethanol extracts at 1.6 g/dL concentration, 97.70±0.55 and 98.05±0.36%, were higher than those of 0.1 and 1% L-ascorbic acids, 101.44±0.98% and 99.43±0.78%, respectively. At the concentration of 1.6 g/dL, 50% ethanol extract showed lower NSA (pH 1.2) than water extract unlike EDA, TPC and SOD-like activity. Regarding TPCs of WG extracts, the activities were the highest at 50% ethanol extracts (1.6 g/dL: 38.76±0.23 mM gallic acid equiv.) followed by water and 100% ethanol extracts. The results suggest the usefulness of developing functional foods using antioxidative active compounds of WG with high polyphenol contents.
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이순홍,박선빈 誠信女子大學校 生活文化硏究所 2002 生活文化硏究 Vol.16 No.-
To see how Hippens influenced the fashion industry, this thesis makes a study of the individual characteristics and forms of self-expression within that group and futruter to discover the link between hippie and high fashion during the 1960's and 1970's. A study of hippie fashion requires the definition of 'hippie'. Hippie live their lives from a natural perspective, disregarding the constraints of urban life. Hippie refuse to conform to traditions in values defined by older generations. A common value among this group is the pursuit of peace in society. Hippies redefined male-female relationships, and as a result they became more liberal than at any time before that era. Self-expression was a major characteristic of the hippie community; psychedelic art, ethnic style, rock music and drug use were the major components. The hippie look manifested itself and realized the ideology of hippie through long hair, blue jeans, psychedelic art prints on clothing, the imitation of the fashion style of popular rock bands and the adoption of flower motif. After 1967 the hippie look grew popular within mainstream population and began to influence 'Hkgh Fashion'. Examples of this are: unisex clothing, layering and the birth of punk fashion. In 1990's the fabric and design became more advanced and of higher quality. New fashion styles such as Grunge, Neo-hippie, Romantic, Ethnic, Pagent, Layering have their roots in hippie fashion of the 1960's. In 1960's and 1970's hippie fashion was born of the streets, with little emphasis on the quality of fabric. As time passed, the hippie look was upgraded through the use of better quality materials and more creative accessorizing. Hippie fashion is recreated as a contemporary theme, combined with modern style and past design and has become a worldwide fashion trend.
ScienceON
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