1,720,969 research outputs found
네이버 FARM판의 설립과 운영 사례를 중심으로
No full text학위논문(석사) - 한국과학기술원 : 과학저널리즘대학원프로그램, 2018.2,[iii, 45 p. :]한국을 비롯한 전 세계 주요 국가에서 농업이 미래산업으로 주목받고 있다. 특히 국내에서는 귀농.귀촌 인구가 늘어나며 농촌이 새로운 삶의 터전으로 재조명되고 있다. 본 학위논문에서는 기존 농업 미디어 뿐 아니라 2017년 4월 서비스를 시작한 네이버FARM판에 대한 분석을 통해 일반 대중의 농업 콘텐츠 소비 성향과 콘텐츠 구독의 경제적.정책적 효과에 대해 살핀다. FARM판은 포털사이트 네이버 안에서 농업 관련 콘텐츠만 전문적으로 다루는 플랫폼이다. 2017년 10월 말 기준 설정자 수는 200만여 명, 일 평균 순방문자 수는 20만여 명에 달한다.
콘텐츠 소비 성향을 분석한 결과 성별에 따라 선호하는 주제가 뚜렷하게 달리는 흐름이 나타났다. 여성 이용자의 경우 식재료, 식품 트렌드, 도시농업 관련 주제를 선호했고 남성 이용자는 귀농.귀촌 주제에 대한 선호가 높았다. 여성이 전체 이용자의 약 60%의 비중을 차지하며 30~49세 여성 이용자가 전체 이용자의 절반 가까이를 차지하는 모습도 확인할 수 있었다. 콘텐츠 구독은 콘텐츠에 소개된 농업인이 생산하는 농산물 구매의사를 높이고, 농업.농촌에 대한 친밀감을 향상시키는 데 뚜렷한 효과가 있는 것으로 나타났다. 설문조사 참여자의 70%가 콘텐츠에 등장한 농민의 농산물을 구매하고 싶다는 의견을 내놨으며 참여자의 81%가 콘텐츠 구독을 통해 농업.농촌에 대한 친밀감이 높아졌다고 밝혔다. 대형 포털사이트에 농업 전문 콘텐츠 플랫폼이 서비스를 시작하면서 이용자 구독 데이터를 바탕으로 농업 분야 정부부처.공기업과 농촌 지역 지방자치단체, 농식품 기업, 개별 생산자가 효과적인 홍보.마케팅 전략을 수립하는 게 가능해졌다. 기존에는 주로 농민과 농업 분야 관계자만을 대상으로 기사를 쓰던 농업 미디어들도 플랫폼을 통해 일반 대중에게 자신들의 콘텐츠를 확산할 수 있게 됐다.한국과학기술원 :과학저널리즘대학원프로그램
Pericyte Loss Leads to Capillary Stalling Through Increased Leukocyte-Endothelial Cell Interaction in the Brain
No full textCopyright © 2022 Choe, Yoon, Joo, Kim, Hong, Koh, Lee, Oh and Jeong.The neurovascular unit is a functional unit composed of neurons, glial cells, pericytes, and endothelial cells which sustain brain activity. While pericyte is a key component of the neurovascular unit, its role in cerebral blood flow regulation remains elusive. Recently, capillary stalling, which means the transient interruption of microcirculation in capillaries, has been shown to have an outsized impact on microcirculatory changes in several neurological diseases. In this study, we investigated capillary stalling and its possible causes, such as the cerebral endothelial glycocalyx and leukocyte adhesion molecules after depleting pericytes postnatally in mice. Moreover, we investigated hypoxia and gliosis as consequences of capillary stalling. Although there were no differences in the capillary structure and RBC flow, longitudinal optical coherence tomography angiography showed an increased number of stalled segments in capillaries after pericyte loss. Furthermore, the extent of the cerebral endothelial glycocalyx was decreased with increased expression of leukocyte adhesion molecules, suggesting enhanced interaction between leukocytes and endothelial cells. Finally, pericyte loss induced cerebral hypoxia and gliosis. Cumulatively, the results suggest that pericyte loss induces capillary stalling through increased interaction between leukocytes and endothelial cells in the brain.11Nsciescopu
심장 재생을 위한 줄기세포로부터 기능성 심장근아세포의 생성 및 증식에 관한 연구
No full text학위논문(박사) - 한국과학기술원 : 의과학학제전공, 2018.2,[iv, 75 p. :]Isolating actively proliferating cardioblasts is the first crucial step for cardiac regeneration through cell implantation. However, the origin and identity of putative cardioblasts are still unclear. Here, I uncover a novel class of cardiac lineage cells, cardioblasts (PCBs), from mouse and human pluripotent stem cells induced using CsAYTE, a combination of the small molecules Cyclosporin A, the rho-associated coiled-coil kinase inhibitor Y27632, the antioxidant Trolox, and the ALK5 inhibitor EW7197.
This novel population of actively proliferating cells is cardiac lineage-committed but in a morphologically and functionally immature state compared to mature cardiomyocytes. Most important, most of CsAYTE-induced PCBs spontaneously differentiated into functional cardiomyocytes () and could be a potential cellular resource for cardiac regeneration. Indeed, not only PCB-derived but also undifferentiated PCBs effectively restored cardiac systolic function in a murine model of acute myocardial infarction through proper integration into the host myocardium.한국과학기술원 :의과학학제전공
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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