Google Trends의 키워드 빅데이터 분석을 활용한 글로벌 스타트업 트렌드 분석: 2017~2022

김재억,전병훈 아이씨티플랫폼학회 2023 JOURNAL OF PLATFORM TECHNOLOGY Vol.11 No.4

In order to identify the trends and insights of 'startups' in the global era, we conducted an in-depth trend analysis of the global startup ecosystem using Google Trends, a big data analysis platform. For the validity of the analysis, we verified the correlation between the keywords 'startup' and 'global' through BIGKinds. We also conducted a network analysis based on the data extracted using Google Trends to determine the frequency of searches for the keyword or term 'startup'. The results showed a strong positive linear relationship between the keywords, indicating a statistically significant correlation (correlation coefficient: +0.8906). When exploring global startup trends using Google Trends, we found a terribly similar linear pattern of increasing and decreasing interest in each country over time, as shown in Figure 4. In particular, startup interest was low in the range of 35 to 76 from mid-2020 due to the COVID-19 pandemic, but there was a noticeable upward trend in startup interest after March 2022. In addition, we found that the interest in startups in each country except South Korea is very similar, and the related topics are startup company, technology, investment, funding, and keyword search terms such as best startup, tech, business, invest, health, and fintech are highly correlated. 글로벌시대의 환경속에서 '스타트업'의 트렌드와 인사이트를 파악하기 위해 빅데이터 분석 플랫폼인 Google Trends를 활용하여 최근 글로벌 스타트업 생태계를 심층 트렌드 분석을 실시하였다. 분석의 타당성을 위해 BIGKinds를 통해 핵심 키워드 '스타트업'과 '글로벌'의 상관관계를 검증하였다. 또한 '스타트업' 키워드나 용어의 검색 빈도를 파악하기 위해 Google Trends를 이용하여 추출한 데이터를 기반으로 네트워크 분석을 수행하였다. 연구결과, 키워드 사이에 강한 양적 선형관계를 보여주어 통계적으로 유의미한 상관관계를 나타냈다(상관계수: +0.8906). Google Trends를 사용한 글로벌 스타트업 트렌드를 탐색한 결과 ‘그림4’와 같이 각 국가들의 시기별 관심도가 증가하거나 감소하는 매우 비슷한 선형적 형태를 나타났다. 특히 스타트업 관심도가 2020년 중반부터 코로나-19 팬데믹으로 인해 35~76 범위내에서 낮게 나타났지만, 2022년 3월 이후 스타트업 관심도가 눈에 띄게 상승하는 트렌드를 보였다. 또한, 한국을 제외한 각 국가별 Startups 관심도는 아주 비슷한 추세이고, 관련 주제는 startup company, technology, investment, funding, 키워드 검색어는 best startup, tech, business, invest, health, fintech 등이 공통적으로 나타나 매우 높은 상관관계가 있음을 확인하였다.

뉴스기사 빅데이터의 키워드분석을 활용한 창업 트렌드 분석:2013~2022

김재억,전병훈 아이씨티플랫폼학회 2023 JOURNAL OF PLATFORM TECHNOLOGY Vol.11 No.3

This research aims to identify startup trends by analyzing a large number of news articles through semantic network analysis. Using the BIGKinds article analysis service provided by the Korea Press Foundation, 330,628 news articles from 19 newspapers from January 2013 to December 2022 were comprehensively analyzed. The study focused on exploring the changes in key issues over the past decade, considering the impact of the social environment and global economic trends on entrepreneurship. We compared the number of news articles and changes in issues before and after the COVID-19 pandemic, and visualized entrepreneurship trends through frequency analysis, relationship analysis, and correlation analysis. The results of the study showed that the top keywords for entrepreneurship-related words are startup activation and commercialization, and the correlation between COVID-19 and entrepreneurship keywords is almost negligible in a linear sense, but the number of news articles decreased during the pandemic, which has an impact. In particular, the most frequently mentioned keywords are Ministry of SMEs and Startups, place is the United States, and person is limited. The agency was the SBA, and the entrepreneurship sector is more affected by social issues than any other sector, with the important characteristics of increased frequency of prompt access. This study supplies essential basic data for understanding and exploring issues and events related to entrepreneurship and suggests future research topics in the field. 본 연구는 시멘틱 네트워크 분석을 통해 방대한 뉴스 기사를 분석하여 창업 트렌드를 파악하고자 하였다. 한국언론진흥재단에서 제공하는 빅카인즈 기사 분석 서비스를 이용해 2013년 1월부터 2022년 12월까지 19개 신문사의 뉴스 기사 330,628건을 종합적으로 분석하였다. 이 연구는 사회적 환경과 글로벌 경제 트렌드가 창업에 미치는 영향을 고려하여 최근 10년 동안 주요 이슈의 변화를 탐구하는 데 중점을 두었다. 또한 코로나-19 팬데믹 전후의 뉴스 기사 수와 이슈 변화를 비교하여 빈도 분석, 관계 분석, 연관어 분석을 통해 창업 트렌드를 시각화 하여 제시하였다. 연구 결과, 창업 연관어의 상위 키워드는 창업의 활성화, 사업화 등이고, 코로나-19와 창업 키워드 간의 상관관계는 선형적인 의미에서 거의 무시할 수 있는 수준이었으나, 팬데믹 기간동안 뉴스 기사 수는 감소하여 영향을 미치는 것으로 나타났다. 특히 가장 많이 언급된 키워드는 중소벤처기업부, 장소는 미국, 인물은 한정화. 기관은 중소벤처기업부로 나타났으며 창업분야는 어떤 분야보다 사회적 이슈에 다각적인 영향을 받고,시기적 접근 빈도가 증가하는 중요한 특징이 나타났다. 본 연구결과는 창업 관련 이슈 및 사건에 대한 이해와 탐구에 필수적인 기초자료를 제공하여 향후 해당 분야 연구주제를 제안할 연구로서의 의미가 있다.

Failure Temperatures of Steel H-Section Columns under Elevated Temperatures

김재억,강승덕,최현식 한국강구조학회 2014 International Journal of Steel Structures Vol.14 No.4

This paper introduces the failure temperatures and stresses of H-section columns under elevated temperatures. The failuretests using the heating furnace were performed at the Fire Insurers Laboratories of Korea. The eight specimens fabricated ofSS400 steel were tested and the slenderness ratio, the width-thickness ratio of the flange, and the width-thickness ratio of theweb of all specimens were fixed at 45.4, 10.0 and 26.4, respectively. The specimens loaded by constant compression wereheated until failure occurred. Four types of compressive stresses were selected as initial loading conditions;, these compressivestresses corresponded to 50, 60, 70, and 80% of the yield strength at ambient temperature. The specimens are classified intofour groups according to the initial compressive stress. The compressive stresses which are initially loaded in the tests are alsodefined as the failure stresses at the failure temperatures of specimens. The failure stresses are compared with the linear elasticand nonlinear buckling stresses and the yield stresses (which respond to the failure temperatures) by using the Eurocode 3 Part1.2 which defines the material property of steel under elevated temperatures. The linear local and overall buckling stresses werehigher than the yield stresses at the failure temperatures and the failure phenomenon was caused by nonlinear bucklingoccurring before yielding failure. The failure stresses were lower than the yield stresses obtained by the EC3 at the failuretemperatures. The failure stress ratios of the four groups of specimens loaded as 50, 60, 70, and 80% of ambient yield strengthwere evaluated as 0.78, 0.89, 0.88, and 0.92 of the yield stresses given in EC3, respectively. The nonlinear buckling stressesdefined by EC3 showed about 0.65 of the failure stresses. The four groups of specimens failed at 543.5, 534.5, 489.9, and457.9oC, respectively.

소아의 하부장관폐색증의 진단 및 치료상의 문제점

김재억(Jai-Eok Kim),김행배(Haeng Bae Kim),이찬영(Chan-Young Lee) 대한외과학회 1980 Annals of Surgical Treatment and Research Vol.22 No.6

血便을 主訴로한 小兒의 外科的 疾患

金在億(Jai Eok Kim),蔡潤汶(Yun Moon Chae) 대한외과학회 1981 Annals of Surgical Treatment and Research Vol.23 No.6

十二指腸 潰痬의 外科的 治療에 있어서 Gastric Drainage을 隨伴한 迷走神經 切除術의 意義

金在億(Kim Jae Eok),尹忠(Youn Choong),邊尙鉉(Pyun Sang Hyun),羅燾憲(Rah Doh Hun) 대한외과학회 1967 Annals of Surgical Treatment and Research Vol.9 No.12

腸結核을 포함한 腹腔內結核의 臨床的 考察及 問題點

金在億(Kim, Jai Fok),羅燾憲(Rah, Do Hun) 대한외과학회 1970 Annals of Surgical Treatment and Research Vol.12 No.9

큰 결정 크기를 가지는 단일층 그래핀 성장을 위한 구리 호일의 전해연마 공정 최적화

김재억 ( Jaeeuk Kim ),박홍식 ( Hongsik Park ) 한국센서학회 2017 센서학회지 Vol.26 No.2

Graphene grown on copper-foil substrates by chemical vapor deposition (CVD) has been attracting interest for sensor applications due to an extraordinary high surface-to-volume ratio and capability of large-scale device fabrication. However, CVD graphene has a polycrystalline structure and a high density of grain boundaries degrading its electrical properties. Recently, processes such as electropolishing for flattening copper substrate has been applied before growth in order to increase the grain size of graphene. In this study, we systemically analyzed the effects of the process condition of electropolishing copper foil on the quality of CVD graphene. We observed that electropolishing process can reduce surface roughness of copper foil, increase the grain size of CVD graphene, and minimize the density of double-layered graphene regions. However, excessive process time can rather increase the copper foil surface roughness and degrade the quality of CVD graphene layers. This work shows that an optimized electropolishing process on copper substrates is critical to obtain high-quality and uniformity CVD graphene which is essential for practical sensor applications.

동적 명령어 저감 인공 신경망 가속기

김재억(Jaeeok Kim),박세훈(Seihoon Park),노원우(Won Woo Ro) 대한전자공학회 2018 대한전자공학회 학술대회 Vol.2018 No.6

경부종괴 및 루공을 주소로 한 소아외과 질환

김재억(Jai Eok Kim),황재택(Jae Taek Hwang),서윤석(Yoon Seog Suh),이찬영(Chan Young Lee) 대한외과학회 1982 Annals of Surgical Treatment and Research Vol.24 No.8