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LDA 토픽 모델링을 활용한 스마트폰 카메라 관련 뉴스기사 분석
박천호,김태경,최정일 한국디지털콘텐츠학회 2023 한국디지털콘텐츠학회논문지 Vol.24 No.8
This study derived major keywords and topics of news big data on smartphone cameras, checked trends of topics, and suggested implications for smartphone cameras based on the results. After analyzing 33,554 news articles, they were classified into four topics: smartphone camera application and service, smartphone camera market and parts industry, smartphone manufacturers and competitive products comparison, and smartphone camera function and design. From the trend of each topic, competition for smartphone camera functions is accelerating, growth and technology investment in the peripheral parts industry to improve camera functions are increasing, and consumer expectations are increasing. The study is meaningful in that it provides an academic foundation to predict and respond to the development of change technologies and consumers’ interest and expectations for future smartphone cameras. 본 연구는 스마트폰 카메라 관련 뉴스 빅데이터를 활용하여 스마트폰 카메라의 주요 키워드와 토픽을 도출하고 트렌드를 확인하여, 분석 결과를 기반으로 스마트폰 카메라에 대한 시사점을 제안하고자 수행되었다. 33,554건의 뉴스기사를 분석한 결과, 스마트폰 카메라 기반 서비스 및 응용, 스마트폰 카메라 시장 및 부품 산업, 스마트폰 제조사 및 경쟁 제품 비교, 스마트폰 카메라 기능 및 디자인 등 4개의 토픽으로 분류되었다. 각 토픽의 트렌드로부터 스마트폰 카메라 기능에 대한 경쟁이 가속화되고 있으며, 카메라 기능 향상을 위한 주변 부품 산업 성장 및 기술 투자가 증가하고 있고, 소비자들의 기대치가 높아지고 있음을 확인하였다. 본 연구 결과를 바탕으로 미래 스마트폰 카메라 산업에 대한 변화 기술 발전, 소비자들의 관심 및 기대를 예측하고 대응할 수 있는 학술적 기반을 제공한 것에 연구의 의의를 갖는다.
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박천호,석대은,김진희,Jeung Hee Lee,김미리,Mi Yeon Kim 한국식품영양과학회 2010 Journal of medicinal food Vol.13 No.5
We investigated the effect of the butanol fraction from the methanol extract of butterbur (Petasites japonicus Max.) (BMP) on the plasma lipid profiles and oxidative damage of liver in mice challenged with monosodium l-glutamate (MSG). ICR mice (6–8 weeks old, male) were fed BMP (0.1% or 0.3%) for 1 week, and on day 7, MSG (4mg/g) was administered intraperitoneally to the mice. Administration of MSG resulted in a significant decrease of antioxidant biomarkers such as total glutathione level and antioxidant enzyme activities such as glutathione reductase (GR), glutathione peroxidase (GPx), glutathione S-transferase (GST), and quinone reductase (NQO1), whereas the thiobarbituric acid-reactive substances (TBARS) value was increased in liver tissue. However, BMP supplementation markedly enhanced the hepatic antioxidant enzyme activities, including GPx, GR, GST, and NQO1, whereas it lowered TBARS, compared to the MSG-treated group. Moreover, BMP supplementation decreased total cholesterol, atherogenic index, and low-density lipoprotein-cholesterol, compared to the MSG-treated group. Based on these results, it was proposed that BMP improve the plasma lipid profiles and decrease the oxidative stress by up-regulating the hepatic antioxidant enzymes in mice challenged with MSG
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메타버스 가상세계 이용의도에 영향을 미치는 요인에 관한 연구: 욕망충족과 혁신확산의 관점에서
박천호,심진섭,최만,최정일 한국서비스경영학회 2023 서비스경영학회지 Vol.24 No.3
본 연구는 메타버스 가상세계와 소비자의 이용의도와의 관계를 욕망충족이론과 혁신확산이론을 중심으로 기술수용모델을 적용하여 실증적으로 분석하였다. 즉, 메타버스 가상세계에 대한 소비자의 가치와 심리적 행동 의도를 알아보기 위하여 욕망충족이론에서 발전된 욕구발달 단계의 예로 현실 탈피, 실재감과 상호작용성을 그리고 혁신확산이론에서 제시하는 혁신의 속성 중에서 상대적 이점, 가시성과 이미지를 요인으로 설정하여 분석되었다. 제안된 연구모형과 가설은 211명을 대상으로 실시한 설문조사를 통하여 PLS 구조방정식 분석으로 검증되었다. 연구결과, 상호작용성과 상대적 이점은 지각된 유용성과 지각된 용이성에 영향을 미쳤다. 그리고, 현실 탈피, 실재감, 이미지는 지각된 유용성에 영향을 미쳤으나 지각된 용이성에는 유의한 영향을 미치지 않는 것으로 나타났다. 반면, 가시성은 지각된 용이성에는 영향을 미쳤지만, 지각된 유용성에는 유의하게 영향을 미치지 않는 것으로 나타났다. 본 연구는 욕망충족이론과 혁신확산이론의 관점에서 욕구발달 단계의 특성과 혁신의 속성이 메타버스 가상세계의 이용의도와 어떠한 관계를 갖는지 실증적으로 규명하였다는 측면에서 연구의 의의를 갖는다. This study empirically analyzed the relationship between metaverse virtual worlds and consumers’ usage intention by applying the technology acceptance model, focused on the desire fulfillment and innovation diffusion theory. In detail, the consumers’ value and psychological behavioral intention for metaverse virtual worlds were analyzed by setting escapism, presence, and interactivity as examples of the hierarchy of needs and relative advantage, visibility, and image among the attributes of the innovation diffusion as factors. The proposed research model and hypothesis were verified through a PLS structural equation analysis based on a survey of 211 people. As a result of the study, it was found that interactivity and relative advantage have an effect on perceived usefulness and perceived ease of use. And escapism, presence and image have an effect on perceived usefulness, but do not have a significant effect on perceived ease of use. On the other hand, it was found that visibility has an effect on perceived ease of use, but does not have a significant effect on perceived usefulness. This study is meaningful in that it empirically investigated how the characteristics of the hierarchy of needs and the attributes of innovation relate to the intention to use metaverse virtual worlds from the desire fulfillment and innovation diffusion perspective.
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개에서 거세 후 발생한 봉합사 육아종의 병리조직학적인 연구
박천호,권영삼,이소무라 히로시,Park, Chun-Ho,Kwon, Young-Sam,Isomura, Hiroshi 대한수의학회 2002 大韓獸醫學會誌 Vol.42 No.3
Postoperative suture granuloma have rarely been reported in animals. Eight biopsy masses from testes areas of neutralized dogs were diagnosed as suture granuloma. The suture granuloma occurred at any time from several weeks to a few years after surgery and appeared to be testicular tumors by macroscopic examination. The granulomas were classified into three types based on the histopathological findings. The first type of pyogranuloma was mainly composed of neutrophils, macrophages, and suture fragments. The second type was chronic necrotizing granuloma which was well demarcated by fibrous connective tissues and was composed of a few suture fragments, macrophages and central fibrinoid necrosis. The third type of granuloma had a poorly defined margin with scarcely observed suture fragments and central necrosis in the tissue. These histopathological findings suggested that various types of suture granuloma may be caused by suture material and could even appear long after surgery.
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Hong Kong H5N1 인플루엔자 바이러스의 면역부전 마우스에 대한 병리발생
박천호,Park, Chun-ho 대한수의학회 2003 大韓獸醫學會誌 Vol.43 No.2
Virulent and avirulent H5N1 viruses were inoculated intranasally to BALB/c and immunodeficient mice, and compared the pathogenesis by histology and immunohistochemistry. All of mice infected with virulent virus died by systemic infection at 6 to 7 days postinfection (PI). BALB/c mice infected with avirulent virus survived from the infection, whereas immunodeficient mice showed nervous symptoms in addition to respiratory disease and died at 13 days PI. Viral positive antigens was detected from multiple organs including central nervous system in immunodeficient mice infected with avirulent virus. These results suggest that avirulent H5N1 influenza virus can aquire the multiple tissue tropism under immunosuppresed condition and host immune system is a important factor to protect the development of disease.
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