1,721,140 research outputs found
Shera-stable underwater frag reduction using a fatty acid amide-based lubricant impregnated surface
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Sustainable Drag Reduction of Fatty Acid Amide‐Based Oleogel Surface Under High‐Speed Shear Flows
No full textNepenthes alata-inspired micro/nano-textured lubricant-infused surface (LIS) has shown strong potential in the fields of drag reduction (DR), anti-biofouling, and self-cleaning. However, its surface-slippery property is largely degraded under turbulent shear flow conditions due to the loss of the impregnated oil. This condition inhibits its practical applications to marine vehicles. The mucus-impregnated tissue systems of marine creatures are primarily based on fatty acid amides (FAAs), such as erucamide or oleamide, which have been commercially utilized as solid-slip additives. A stable lubricant interface of erucamide-PDMS composite (EPC) oleogel is formed by cross-linking erucamide with PDMS gel network prior to infusion of silicon oil. In this study, the surface stability and lubricant retention of EPC are investigated in consideration of DR applications. The fabricated EPC-oleogel surface exhibits shear stable DR under harsh conditions, such as high pressure, temperature, and shear flow conditions. The surface shows a shear stable DR performance of about 14% even up to a high-speed flow of 12 ms−1, corresponding to friction Reynolds number (Reτ) of approximately 5000. The superior lubrication stability of FAA-oleogel at the flow conditions of cruising ships ensures its strong potential for sustainable fuel economy of marine vehicles.11Nsciescopu
sj-docx-1-pus-10.1177_09636625221146269 – Supplemental material for Anti-intellectualism amid the COVID-19 pandemic: The discursive elements and sources of anti-Fauci tweets
No full textSupplemental material, sj-docx-1-pus-10.1177_09636625221146269 for Anti-intellectualism amid the COVID-19 pandemic: The discursive elements and sources of anti-Fauci tweets by Yingying Chen, Jacob Long, Jungmi Jun, Sei-Hill Kim, Ali Zain and Colin Piacentine in Public Understanding of Science</p
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
HUMANITARIAN TURN IN CONTEMPORARY ISLAMIC STUDIES: A REFLECTION OF ALI ZAIN AL-JUFRI’S THOUGHT ON RELIGIOUS MODERATION
No full textThis research aims to examine Ali Zain al-Jufri's religious moderation. Through his work, al-Insaniyya qabla al-Tadayyun (Humanity before Religiosity), al-Jufri responds to the religious forms of Muslims in several parts of the world. By focusing on this work, the researchers thoroughly explore al-Jufri's thoughts regarding religious moderation. Why is this work relevant for study? Apart from the fact that no previous research has examined al-Jufri's work, this work is increasingly relevant to study if we reflect on current sociological facts. Much violence occurs in the name of religion. Those behaviors are nothing more than forms of interpretation, which are then considered the voice of God. At least, al-Jufri's work is one way out as an oasis to these problems. The method used in this research is a review-based qualitative method that focuses on examining al-Jufri's work. This research is classified as library research. In the end, this research concluded that there are three significant values of al-Jufri's religious moderation, including the command to speak good words (Surah al-Baqarah [2]: 83), the prohibition on killing fellow humans (Surah al-Ma'idah [3]: 32), and the order to uphold justice on earth (Surah al-Nisa [5]: 135). Therefore, al-Jufri distinguished religion and religiosity. Humanity, for him, is above religiosity, not religion
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