• 전자통신동향분석
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• 제36권4호
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• pp.145-153
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• 2021

Data imputation is a crucial issue in data analysis because quality data are highly correlated with the performance of AI models. Particularly, it is difficult to collect quality time-series data for uncertain situations (for example, electricity blackout, delays for network conditions). Thus, it is necessary to research effective methods of time-series data imputation. Many studies on time-series data imputation can be divided into 5 parts, including statistical based, matrix-based, regression-based, deep learning (RNN and GAN) based methodologies. This study reviews and organizes these methodologies. Recently, deep learning-based imputation methods are developed and show excellent performance. However, it is associated to some computational problems that make it difficult to use in real-time system. Thus, the direction of future work is to develop low computational but high-performance imputation methods for application in the real field.

• 한국프랜차이즈경영연구
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• 제12권4호
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• pp.13-23
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• 2021

Purpose: This study aimed to derive clues for the franchise industry to overcome difficulties such as various legal regulations and social responsibility demands and to continuously develop by analyzing the research trends related to franchises published in Korea. Research design, data and methodology: As a result of searching for 'franchise' in ScienceON, abstracts were collected from papers published in domestic academic journals from 1994 to June 2021. Keywords were extracted from the abstracts of 1,110 valid papers, and after preprocessing, keyword analysis, TF-IDF analysis, and topic modeling using LDA algorithm, along with trend analysis of the top 20 words in TF-IDF by year group was carried out using the R-package. Results: As a result of keyword analysis, it was found that businesses and brands were the subjects of research related to franchises, and interest in service and satisfaction was considerable, and food and coffee were prominently studied as industries. As a result of TF-IDF calculation, it was found that brand, satisfaction, franchisor, and coffee were ranked at the top. As a result of LDA-based topic modeling, a total of 12 topics including "growth strategy" were derived and visualized with LDAvis. On the other hand, the areas of Topic 1 (growth strategy) and Topic 9 (organizational culture), Topic 4 (consumption experience) and Topic 6 (contribution and loyalty), Topic 7 (brand image) and Topic 10 (commercial area) overlap significantly. Finally, the trend analysis results for the top 20 keywords with high TF-IDF showed that 10 keywords such as quality, brand, food, and trust would be more utilized overall. Conclusions: Through the results of this study, the direction of interest in the franchise industry was confirmed, and it was found that it was necessary to find a clue for continuous growth through research in more diverse fields. And it was also considered an important finding to suggest a technique that can supplement the problems of topic trend analysis. Therefore, the results of this study show that researchers will gain significant insights from the perspectives related to the selection of research topics, and practitioners from the perspectives related to future franchise changes.

• 패션비즈니스
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• 제19권6호
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• pp.74-81
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• 2015

The purpose of this study is to analyze the operation situation & academic research trends in Seoul and Gyeonggi area, based on theoretical consideration on academic credit bank system, focusing on academic credit bank system where a lifelong education institute affiliated with a university produces graduates with associate's degree. To find out about how academic credit bank institutes are operated in cosmetology field, the analysis of literature review was used, in reference to the literatures as well as administrative data from the Ministry of Education and institutes for lifelong education with respect to academic credit bank system. Further, dissertations and articles in journals were also reviewed for analysis, in order to see academic research trends with respect to academic credit bank system in cosmetology, and finally to provide the directions for a follow-up study in the future. It was found that about 120 junior colleges have cosmetology departments, while only about 20 4-year universities have them, where lifelong education systems such as lifelong education are essential for learners to have bachelor's degree to go to a graduate school in reality. Every year more people want to learn and acquire the degree through a lifelong education institute affiliated with a university. In this regard, it is thought that there should be first positive social awareness towards a degree recipient from such educations and more administrative promotion and active engagement of government, businesses and schools, in order to vitalize academic credit bank system. Meanwhile, there are only about 10 academic literatures including the dissertations on the operation of academic credit bank system with respect to cosmetology, which is not sufficient number in academic research, compared to the increasing number of people who want to acquire the degree. Most of the preceding studies have been limited to education services and learners' satisfaction level. Therefore, continuous follow-up study is required on how to improve social awareness as well as teachers and instructors' satisfaction level, as well as how to develop industry-customized curriculum, in order to ensure active academic credit bank system.

• 한국건설관리학회논문집
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• 제18권5호
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• pp.20-31
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• 2017

최근 전 세계적으로 4차 산업혁명에 대한 관심이 높아지면서 건설산업에서도 이를 대응하는 것이 중요한 현안이 되고 있다. 건설산업이 4차 산업혁명을 효과적으로 대응하기 위해서는 관련 기술을 건설기술과 접목시키는 노력이 필요하며. 이를 위해서는 4차 산업혁명 기술을 건설기술에 접목시킨 트렌드를 분석하고 이해할 필요가 있다. 본 연구의 목적은 빅데이터분석 기법을 활용하여 지난 10년간의 ICT 건설기술 개발 트렌드를 분석하고 주요 특징을 도출하는데 있다. 트렌드 분석 결과, 총 11개의 트렌드가 도출되었으며 ICT 건설기술 개발이 예상만큼 활발하지 않은 것으로 나타났다. 또한 그간 건설기술 개발은 소프트웨어 기술 보다는 하드웨어 기술 개발에 치중되어 있던 것으로 나타나 향후 소프트웨어 기술 개발에 대한 관심과 노력이 필요한 것으로 나타났다.

• 한국융합학회논문지
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• 제9권12호
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• pp.373-380
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• 2018

본 연구에서는 헤어미용과 관련된 기술을 헤어기기, 뷰티/관리, 스타일링로 나누고, 이들 기술분야에 대한 특허 출원 동향을 살펴봄으로써 헤어미용 기술에 대한 발전 가능성과 향후 헤어미용 기술에서 주안점을 두어야 할 부분을 연구하였다. 그 결과 헤어미용 기술은 1990년 이후 현재까지 꾸준하게 특허활동이 증가하는 추세에 있고, 특히 헤어미용 기술분야 중에서도 헤어드라이기, 헤어아이론 등과 같은 전기식 헤어기기에 대한 특허활동이 가장 활발하게 이루어지고 있음을 확인하였다. 또한 주요출원인의 출원동향을 살펴본 결과 각 기술 분야마다 기술을 선도하고 있는 출원인이 서로 다르게 나타나는 것을 통해 각 분야별로 전문성을 구비하여야 하는 헤어미용 기술의 특징을 재차 확인할 수 있었다. 이에 본 연구는 헤어미용 기술에 대한 특허동향을 분석하여 향후 다양한 헤어미용 기술분야에 대한 연구개발 방향을 설정하고 이를 통해 헤어미용 시장의 활성화 및 시장 규모의 증대를 기대한다.

• 품질경영학회지
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• 제49권4호
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• pp.551-567
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• 2021

Purpose: The purpose of this paper is to present implications by analyzing research trends on smart factories by text analysis and visual analysis(Comprehensive/ Fields / Years-based) which are big data analyses, by collecting data based on previous studies on smart factories. Methods: For the collection of analysis data, deep learning was used in the integrated search on the Academic Research Information Service (www.riss.kr) to search for "SMART FACTORY" and "Smart Factory" as search terms, and the titles and Korean abstracts were scrapped out of the extracted paper and they are organize into EXCEL. For the final step, 739 papers derived were analyzed using the Rx64 4.0.2 program and Rstudio using text mining, one of the big data analysis techniques, and Word Cloud for visualization. Results: The results of this study are as follows; Smart factory research slowed down from 2005 to 2014, but until 2019, research increased rapidly. According to the analysis by fields, smart factories were studied in the order of engineering, social science, and complex science. There were many 'engineering' fields in the early stages of smart factories, and research was expanded to 'social science'. In particular, since 2015, it has been studied in various disciplines such as 'complex studies'. Overall, in keyword analysis, the keywords such as 'technology', 'data', and 'analysis' are most likely to appear, and it was analyzed that there were some differences by fields and years. Conclusion: Government support and expert support for smart factories should be activated, and researches on technology-based strategies are needed. In the future, it is necessary to take various approaches to smart factories. If researches are conducted in consideration of the environment or energy, it is judged that bigger implications can be presented.

• 정보관리학회지
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• 제33권4호
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• pp.103-124
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• 2016

본 연구는 계량정보학적 분석을 통해 국내 재난 관련 연구의 동향을 파악하는 것을 목적으로 한다. 이를 위해 KCI 데이터베이스를 검색하여 2002년부터 2016년 사이에 출간된 재난 관련 학술지 논문 772편을 분석하였다. 논문들이 발표된 학문분야의 프로파일링 분석과 저널 프로파일링 분석 및 키워드 동시출현분석을 실시하였다. 분석 결과, 국내 재난 관련 연구의 수는 지속적으로 증가하고 있으며 특히 2014년 세월호 사건 이후에 재난 연구의 수가 급증하였다. 재난 연구의 주요 학문영역은 재난관리 정책을 제시하는 정책학/행정학 영역, 관련 기술을 개발하는 '공학' 영역, 지리정보시스템과 통신기술을 연구하는 'GIS/통신' 영역, 재난을 정신건강학 혹은 인문사회학적 측면에서 연구하는 '의학/인문사회과학' 영역으로 확인되었다. 시기별로 살펴보면, 2014년 이후에는 행정학과 정책학 분야의 비중이 감소한 반면에 법학, 의학, 신문방송학 등의 다양한 학문 분야에서 재난 관련 연구가 활발해졌다.

• 한국실내디자인학회논문집
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• 제20권3호
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• pp.41-48
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• 2011

The purpose of this study was to analyze research trends in post-occupancy evaluation and to explore Improvement Directions. Also this study investigated historical development of domestic POE researches and current discussions to POE in architecture and interior design fields. The results were as follows. For the purpose of this study, 55 articles from 3 journals were selected and analyzed. 55 articles analyzing POE methodology and applying POE method were published from 1990 to 2010. In the 1990s, studies on introduction of POE method, potential and limitation were conducted. In the 2000s, the research theme showed the study for evaluation of apartment measuring the residents satisfaction. Gathering the opinions of designers and people in architecture field, they have recognized the need to perform POE, indeed it has been difficult to find POE researchers and utilized POE data. Nevertheless, some of them have performed POE of their building and got feedback from residents. In conclusion, to apply POE method and develop its potential, it is necessary to minimize the barriers. It should Therefore, be performed POE by stakeholders who are designers, builders and residents and POE data would be provided a variety of types. Furthermore, POE certification system should be designed at the government level and basically, POE courses must be included in the architectural curriculum.

• 한국유기농업학회지
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• 제22권3호
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• pp.369-379
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• 2014

To investigate the technology trends in organic farming using patent analysis, total 1,026 patents in organic farming in Australia, EU, Japan, Korea and USA between 1974 and 2014 were analyzed. The number of the patents applied in organic farming was largest in Korea, followed by Japan and the USA. Since 2000, the patent application in Korea and USA increased drastically, while in Japan the patents in organic farming were applied steadily in the late 1980s. The applied patents in organic farming were mainly dominated in the field of organic production technology (AA) especially in Korea, while those in environmental assessment were merely applied. Most patent appliers were biased to private applier (80%) than national institutes including university. With this study, it is highly recommended that national interests and R&D on the organic farming fields are needed to meet the food safety.

• East Asian mathematical journal
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• 제39권4호
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• pp.437-454
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• 2023

The core of the change in the era of the 4th industrial revolution is the change in the base of 'digital technology'. These changes are incomparably large and are expected to have a more important impact on our lives than ever before. One of the major inflection points in the transition to the digital era is the education field, and IT technology has become an essential element in the educational field. Accordingly, this study examines domestic research trends related to the educational environment based on digital technology. Then, we would like to provide implications for the establishment of a digital-based educational environment that will change in the future. To this end, Semantic network analysis has been conducted to quantitatively structure text data obtained from studies related to digital technology in the field of mathematics education over the past 10 years, and the discussion will continue based on the results.