1,720,974 research outputs found
The hydrophobicity and optical properties of the HfO2-deposited glass
No full text[[abstract]]The HfO2 thin film was deposited on the glass substrate by physical vapor deposition and exhibited good surface flatness. The coating had smaller grain size with increasing RF power. A control of lower oxidation state of Hf (Hf2+) is a way to enhance the hydrophobicity of the HfO2-deposited glass. The nonlinear refractive index of HfO2 film on the glass substrate was measured by Moire deflectometry, and was of the order of 10(-8) cm(2) W-1. As the RF power increased, the transparent HfO2-deposited glass showed a blue-shift and lower transmission in the near-IR region. On comparing with the pure glass, the HfO2-deposited glass exhibited hydrophobicity and had optical selection in the Vis-IR region for improving optical application. (C) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.[[note]]SC
Structure and physical properties of W-doped HfO2 thin films deposited by simultaneous RF and DC magnetron sputtering
No full text[[abstract]]The W-doped HfO2 (HfO2:W) films were prepared by simultaneous RF magnetron sputtering of HfO2 and DC magnetron sputtering of W. The advantage of this method is that the W content could be independently controlled. The coexistence of W compounds and HfO2 was observed by XPS. Increasing the ratio of O-2 to Ar pressure made the HfO2:W film be more stoichiometric. A control of the presence of HfWO5 is a way to enhance strongly the hydrophilicity of HfO2:W film. By decreasing the W content or increasing the ratio of O-2 to Ar pressure, HfO2:W film exhibited lower surface roughness, higher visible transmission, a higher linear refractive index and a lower stress-optical coefficient. (C) 2013 Elsevier B.V. All rights reserved.[[note]]SC
Colorectal Cancer Screening with Fecal Occult Blood Test within a Multiple Disease Screening Program: An Experience from Keelung, Taiwan
No full textRemission, Relapse, and Metastasis/Death of Small Hepatocellular Carcinoma Treated with Percutaneous Ethanol Injection
No full text
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
Predictive survival model with time-dependent prognostic factors: development of computer-aided SAS Macro program. Journal of Evaluation in Clinical Practice
No full textAppropriate 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
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