1,721,019 research outputs found
Acidity measured with the Electrical Conductivity Method (ECM) on the full EGRIP ice core, converted to hydrogen ion concentration
No full textECM data of the East GReenland Ice core Project (EGRIP) core with the technique described by Hammer (1980) was recorded in the field during the 2017, 2018, 2019, 2022, and 2023 field seasons. The resolution of ECM data is 1 mm. The data is given as H+ ion concentration, but the absolute calibration must be considered tentative. The data set is an extension of the data presented in Mojtabavi et al., 2020, and all details regarding data processing etc. can be found therein
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
Improved ice-core chronologies and synchronization of climate records for a better understanding of the global climate
No full textChronology GICC05-EGRIP-1 for the East GReenland Ice-core Project (EGRIP), extended to 108,305 years before 2000 CE
No full textThis data file provides the chronology (named GICC05-EGRIP-1) for the deep ice core from the East GReenland Ice-core Project (EGRIP) down to 108,305 years before 2000 CE. We rely mainly on volcanic events and common patterns of peaks in dielectric profiling (DEP), electrical conductivity measurements (ECM) and tephra records for the synchronization between the EGRIP, NEEM and NGRIP ice cores in Greenland. We transfer the annual-layer-counted Greenland Ice Core Chronology 2005 (GICC05) timescale from the NGRIP core to the EGRIP ice core by means of these match points. This data file extends earlier chronologies
Match points EGRIP-NGRIP1 used for the chronology transfer for the East GReenland Ice-core Project (EGRIP), extended to 108,305 years before 2000 CE
No full textThis data file provides the chronology (named GICC05-EGRIP-1) for the deep ice core from the East GReenland Ice-core Project (EGRIP) down to 108,305 years before 2000 CE. We rely mainly on volcanic events and common patterns of peaks in dielectric profiling (DEP), electrical conductivity measurements (ECM) and tephra records for the synchronization between the EGRIP, NEEM and NGRIP ice cores in Greenland. We transfer the annual-layer-counted Greenland Ice Core Chronology 2005 (GICC05) timescale from the NGRIP core to the EGRIP ice core by means of these match points. This data file extends earlier chronologies
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
Match points EGRIP-NGRIP2 used for the chronology transfer for the East GReenland Ice-core Project (EGRIP), extended to 108,305 years before 2000 CE
No full textThis data file provides the chronology (named GICC05-EGRIP-1) for the deep ice core from the East GReenland Ice-core Project (EGRIP) down to 108,305 years before 2000 CE. We rely mainly on volcanic events and common patterns of peaks in dielectric profiling (DEP), electrical conductivity measurements (ECM) and tephra records for the synchronization between the EGRIP, NEEM and NGRIP ice cores in Greenland. We transfer the annual-layer-counted Greenland Ice Core Chronology 2005 (GICC05) timescale from the NGRIP core to the EGRIP ice core by means of these match points. This data file extends earlier chronologies
Chronology for the East GReenland Ice-core Project (EGRIP), extended to 108,305 years before 2000 CE
No full textThis data file provides the chronology (named GICC05-EGRIP-1) for the deep ice core from the East GReenland Ice-core Project (EGRIP) down to 108,305 years before 2000 CE. We rely mainly on volcanic events and common patterns of peaks in dielectric profiling (DEP), electrical conductivity measurements (ECM) and tephra records for the synchronization between the EGRIP, NEEM and NGRIP ice cores in Greenland. We transfer the annual-layer-counted Greenland Ice Core Chronology 2005 (GICC05) timescale from the NGRIP core to the EGRIP ice core by means of these match points. This data file extends earlier chronologies
- …
