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C. Vogel s/m F. Ernst z. frdl. Ernng
No full textDedikationsilhouette von Caspar Vogel während seiner Studienzeit in Zürich; Silhouette gewidmet F. ErnstAnonyme DruckgrafikHandschriftliche Widmung unterhalb des Porträts "C. Vogel s[eine]m F. Ernst z[ur] fr[eun]dl[ichen] Er[i]nn[erun]g.
Modeling the spatial distribution of AD 79 pumice fallout and pyroclastic density current and derived deposits of Somma-Vesuvius (Campania, Italy) integrating primary deposition and secondary redistribution
No full textThe spatial distributions of primary deposits and related reworked ones from Plinian fallout and from pyroclastic density currents (PDCs) of the AD 79 eruption of Somma-Vesuvius were independently modeled for the Sarno River plain (Campania, Italy). The simulation takes into consideration both primary deposition of the volcanic products and their secondary redistribution by geomorphic processes of erosion, transport, and redeposition. We hypothesize that the pre-eruption topography controlled both the intial volcanic deposition of PDCs and the subsequent processes redistributing material of the pumice fallout and PDC deposits, and thus significantly controlled the thickness of the final volcaniclastic deposits. The methodology applied is based on a reconstructed pre-AD 79 digital elevation model of the Sarno River plain, an extensive tephrostratigraphic dataset from about 1,200 core drillings and a predictive modeling technique. The two models produce contrasting spatial distribution patterns for both the AD 79 deposits from fallout plus their derivates, versus from PDCs and their derivatives. The contrast allows determination of the most important factors controlling the thickness of the AD 79 volcaniclastic deposits. This provides new insights into the process dynamics during and immediately after the AD 79 Plinian eruption including primary deposition, erosion, and redistribution. © 2013 Springer-Verlag Berlin Heidelberg
Reconstructing the Roman topography and environmental features of the Sarno River Plain (Italy) before the AD 79 eruption of Somma-Vesuvius
No full textA methodology was developed to reconstruct the Roman topography and environmental features of the Sarno River plain, Italy, before the AD 79 eruption of the Somma-Vesuvius volcanic complex. We collected, localized and digitized more than 1800 core drilling data to gain a representative network of stratigraphical information covering the entire plain. Besides other stratigraphical data including the characteristics of the pre-AD 79 stratum, the depth to the pre-AD 79 surface was identified from the available drilling documentations. Instead of a simple interpolation method, we used a machine based learning approach based on classification and regression trees to reconstruct the pre-AD 79 topography. We hypothesize that the present-day topography reflects the ancient topography and related surface processes, because volcanic deposits from the AD 79 eruption coated the ancient landscape. Thus, ancient physiographic elements of the Sarno River plain are still recognizable in the present-day topography. Therefore, a high-resolution, present-day digital elevation model (DEM) was generated. A detailed terrain analysis yielded 15 different primary and secondary topographic indices. Subsequently, a classification and regression model was applied to predict the depth of the pre-AD 79 surface combining present-day topographic indices with other physiographic data. This model was calibrated with the measured depth of the pre-AD 79 surface. The resulting pre-AD 79 DEM was compared with the classified characteristic of the pre-AD 79 stratum, identified from the drilling documentations. This allowed the reconstruction of pre-AD 79 environmental features of the Sarno River plain such as the ancient coastline, the paleo-course of the Sarno River and its floodplain. To the knowledge of the authors, it is the first time that the pre-AD 79 topography of the Sarno River plain was systematically reconstructed using a detailed database and sophisticated data mining technologies. © 2009 Elsevier B.V. All rights reserved
PENERAPAN MODEL TRANSPORTASI DAN DISTRIBUSI VOGEL???S APPROXIMATION METHOD (VAM) DAN MODIFIED DISTRIBUTION (MODI) PADA UD. TANI BERDIKARI
Get PDF2014Penelitian ini bertujuan untuk mendeskripsikan dan menganalisis penerapan model transportasi distribusi dengan metode Vogel???s Approximation Method dan Modified Distribution pada UD.Tani Berdikari.\ud
Data penelitian ini diperoleh melalui wawancara langsung (primer) dengan pihak yang terkait dengan bagian pemasaran khususnya bagian distribusi UD.Tani Berdikari dan melalui dokumentasi data perusahaan yang berhubungan dengan distribusi (sekunder).\ud
Temuan penelitian menunjukkan bahwa penerapan model transportasi distribusi dengan menggunakan metode Vogel???s Approximation Method dan Modified Distribution dapat menghemat total biaya transportasi distribusi semen pada UD.Tani Berdikari. Dengan menerapkan model transportasi distribusi Vogel???s Approximation Method dan Modified Distribution dapat menghemat sebesar Rp 1.296.880,- atau 18.53% per hari biaya transportasi distribusi pada UD.Tani Berdikari.\ud
Kata kunci : model transportasi, Vogel???s Approximation Method, Modified Distributio
C. Vogel s/m Hilty z. frdl. Erng
No full textDedikationssilhouette nach rechts von Capsar Vogel, gewidmet Johann Ulrich Hilty (1827-1906)Anonyme/r Künstler/inUnten Mitte Zeichen einer studentischen Verbindung. Es könnte sich beim Dargestellten um Joh. Caspar Vogel (1826-1871) handeln, der zu dieser Zeit als Student an der Universität Zürich immatrikuliert und Mitglied der Zofingia war, vgl. die Angaben zu Vogel in der Matrikeledition der Universität Zürich (www.matrikel.uzh.ch [Stand: 20.04.2017])Handschriftliche Widmung unterhalb des Bildes "C. Vogel s[eine]m Hilty z[ur] fr[eun]dl[ichen] Er[inneru]ng.
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
J. C. Vogel s/m F. Horner z. frdl. Erinn : Zürich im März 52
No full textDedikationssilhouette von Johann Caspar Vogel während seiner Studienzeit in ZürichAnonyme DruckgrafikTitel gemäss handschriftlicher NotizHandschriftliche Widmung unterhalb des Porträts "J. C. Vogel s[eine]m F. Horner z[ur] fr[eun]dl[ichen] Erinn[erung]
Variations on the Author
Get PDF“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
Get PDFWe 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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