1,723,021 research outputs found
Synthesis of thick-walled SBA-15 in PEO27 - PPO61 - PEO27 template under relatively low temperature and acidity
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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
Efek CuI Terhadap Konduktivitas dan Energi Aktivasi (CuI)x(AgI )1-x (x = 0,5 - 0,9)
No full textPembuatan bahan konduktor padat telah dilakukan dengan cara mencampurkan CuI dan AgI. Kedua bahan dibuat dalam bentuk pelet dan dipanaskan pada suhu 300 oC selama 3 jam. Pengukuran konduktivitas (CuI)x((AgI)1-x dilakukan dengan alat LCR-meter pada frekuensi 0,1 Hz sampai 100 kHz dan sebagai fungsi suhu. Penentuan struktur kristal (CuI)x((AgI)1-x dan regangan kisi dilakukan dengan difraksi sinar-X. Hasil penelitian menunjukkan regangan kisi konduktor padat (CuI)x((AgI)1-x turun seiring dengan naiknya fraksi berat CuI. Puncak difraksi sinar-X untuk konduktor padat (CuI)x((AgI)1-x menunjukkan puncak-puncak CuI, sedangkan puncak-puncak AgI tidak tampak. Konduktivitas konduktor padat (CuI)x(AgI)1-x naik seiring dengan naiknya suhu pemanasan. Energi aktivasi naik seiring dengan bertambahnya konsentrasi CuI. </div
Efek CuI Terhadap Konduktivitas dan Energi Aktivasi (CuI)x(AgI )1-x (x = 0,5 - 0,9)
Full text linkPembuatan bahan konduktor padat telah dilakukan dengan cara mencampurkan CuI dan AgI. Kedua bahan dibuat dalam bentuk pelet dan dipanaskan pada suhu 300 oC selama 3 jam. Pengukuran konduktivitas (CuI)x((AgI)1-x dilakukan dengan alat LCR-meter pada frekuensi 0,1 Hz sampai 100 kHz dan sebagai fungsi suhu. Penentuan struktur kristal (CuI)x((AgI)1-x dan regangan kisi dilakukan dengan difraksi sinar-X. Hasil penelitian menunjukkan regangan kisi konduktor padat (CuI)x((AgI)1-x turun seiring dengan naiknya fraksi berat CuI. Puncak difraksi sinar-X untuk konduktor padat (CuI)x((AgI)1-x menunjukkan puncak-puncak CuI, sedangkan puncak-puncak AgI tidak tampak. Konduktivitas konduktor padat (CuI)x(AgI)1-x naik seiring dengan naiknya suhu pemanasan. Energi aktivasi naik seiring dengan bertambahnya konsentrasi CuI.
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
A review of the 19th International Symposium on geodynamics and earth tide, Wuhan 2021
Full text linkModern geodetic technologies such as high-precision ground gravity measurements, satellite gravity measurements, the global navigation satellite system, remote sensing methods, etc. provide rich observation data for monitoring various geodynamic processes of the global Earth and its surface. The 19th International Symposium on Geodynamics and Earth Tides brought together scientific researchers from 26 countries around the world, shared the application of various measurements in different geoscience issues, covering Earth tidal deformation, oceanic and atmospheric loading effects, earthquake cycle, hydrology, Earth rotation changes, etc., and provided a precious exchange platform for global peers
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
KONDUKTIVITAS DAN SIFAT TERMAL ELEKTROLIT PADAT (CuI)x(β-Al2O3)1-x
No full textKONDUKTIVITAS DAN SIFAT TERMAL ELEKTROLIT PADAT (CuI)x(β-Al2O3)1-x. Bahan elektrolit padat (CuI)x(β-Al2O3)1-x dibuat dengan mencampur bahan β-Al2O3 dan CuI dengan metode reaksi padat. Setelah dikompaksi dan dibentuk pelet, dilakukan pemanasan pada suhu 500℃ selama 3 jam. Nilai konduktivitas (CuI)x(β-Al2O3)1-x pada potensial 1 volt pada frekuensi rendah (0,1—100) Hz adalah (4,5-9,7)x10-5 S/cm, dan pada frekuensi tinggi (0,2-100) kHz dengan nilai konduktivitas berkisar (4-l0)x10-5 S/cm. Pada potensial 2 volt pada frekuensi rendah nilai konduktivitasnya (0,90—3)x10-7 S/cm, sedangkan pada frekuensi tinggi nilainya berkisar (0,85—2,l)x10-7 S/cm. Data termal analisis menunjukkan proses endotermis, yang merupakan pelelehan dari unsur—unsur pembentuk elektrolit padat (CuI)x(β-Al2O3)1-
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