1,722,372 research outputs found
Organic Carbon Burial in a Large, Deep Alpine Lake, Southwest China in Response to Changes in Climate, Land Use and Nutrient Supply over the Past ~100 Years
No full textThis dataset shows original data investigated in our study of spatiotemporal dynamics of OC burial in Lugu Lake, China. Further information can be found at: Lin, Q., Liu, E.F., Zhang, E.L., Nath, B., Bindler, R., Yuan, H.Z., Shen, J. In review. Organic Carbon Burial in a Large, Deep Alpine Lake, Southwest China in Response to Changes in Climate, Land Use and Nutrient Supply over the Past ~100 Years. Journal of Geophysical Research: Biogeosciences
Opening and Mixed-mode Fracture Initiation in aQuasi-brittle Material
No full textresolution displacement data from fringes that are formed by the subtraction of laser
speckle patterns, was constructed to study fracture initiation in a quasi-brittle material.
Mode I opening and mixed-mode I and II fracture experiments were performed with a
homogeneous, fine grained (0.1 - 0.8 mm grain size) sandstone using the three-point
bending test. Specimens were notched at various lengths and positions of the beam
edge to produce the desired loading condition, with KII/KI = 0 - 13%. The experimental
results indicate that the length of the localized damage zone at peak load for mode I
fracture is 6 - 7 mm, about ten times the (largest) grain size. From the mixed-mode
loading tests, the zone length at peak load increased to 10 - 12 mm, and the length
was more or less constant for KII/KI = 5 - 13%. ESPI also provided detailed
information on the horizontal displacement profiles along the damage zone. For center
notch specimens at peak load, the horizontal (opening) displacement at the notch tip
was 40 μm, which can be interpreted as the critical opening displacement if the
damage zone is fully formed at peak. For mixed-mode specimens, the critical
horizontal displacement at peak load is 60 - 80 μm, but the vertical displacement is
needed to resolve the critical opening and sliding components
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
Organic Carbon Burial in a Large, Deep Alpine Lake, Southwest China in Response to Changes in Climate, Land Use and Nutrient Supply over the Past ~100 Years
No full textThis dataset shows original data investigated in our study of spatiotemporal dynamics of OC burial in Lugu Lake, China. Further information can be found at: Lin, Q., Liu, E.F., Zhang, E.L., Nath, B., Bindler, R., Yuan, H.Z., Shen, J. In review. Organic Carbon Burial in a Large, Deep Alpine Lake, Southwest China in Response to Changes in Climate, Land Use and Nutrient Supply over the Past ~100 Years. Journal of Geophysical Research: Biogeosciences
Metformin finding its way into the central nervous system: Combating neurological diseases?
No full textVariations 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
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