1,720,995 research outputs found
Roussel M. (2011) – Normes et variations de la production lithique durant le Châtelperronien : la séquence de La Grande Roche de la Plématrie à Quincay (Vienne)
No full textRoussel Morgan. Roussel M. (2011) – Normes et variations de la production lithique durant le Châtelperronien : la séquence de La Grande Roche de la Plématrie à Quincay (Vienne). In: Bulletin de la Société préhistorique française, tome 109, n°2, 2012. pp. 354-355
Three Dimensional Models and Two Dimensional Cross Sections of Châtelperronian and Protoaurignacian Lithic Cores from the Sites of Les Cottés and Roc de Combe
No full textThese data were generated as part of a study investigating the use of quantitative methods on three dimensional models of lithic artifacts. The majority of the data set is comprised of 3D scans of Châtelperronian and Protoaurignacian cores from the site of Les Cottés (France), which were generated using photogrammetry. Although cores from the site of Roc de Combe were also scanned for the associated study, we are not able to make them available here due to rights restrictions. The second part of the data set includes two dimensional representations of cross sections, which were from the 3D artifact models. These were used in two analyses, which are described in the associated publication in JCAA (see citation below).Leakey FoundationService Régional de l’Archéologie (France)Department of Human Evolution of the Max Planck Institute for Evolutionary AnthropologyFyssen FoundationPorter, Samantha T; Roussel, Morgan; Soressi, Marie. (2018). Three Dimensional Models and Two Dimensional Cross Sections of Châtelperronian and Protoaurignacian Lithic Cores from the Sites of Les Cottés and Roc de Combe. Retrieved from the University Digital Conservancy, https://doi.org/10.13020/D6VD6K
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
A Simple Photogrammetry Rig for the Reliable Creation of 3D Artifact Models in the Field: Lithic Examples from the Early Upper Paleolithic Sequence of Les Cottés (France)
No full textThere are three ways to view the 3D models in this data set. All models are freely available for download in the form of 3D PDFs. These can be opened in Adobe Reader or Adobe Acrobat. We are also making OBJ versions of these models available upon request the for educational and research purposes. Some models may also be viewed online within a web browser by visiting the first author's profile on the website Sketchfab. The URL for these models is https://sketchfab.com/port0228/folders. Because Sketchfab is a third-party site, the authors cannot ensure the longevity of these version of the models.
Two versions of a photogrammetric scale, which may be used during image capture to facilitate image alignment and model scaling, are also available here. If you encounter issues with photogrammetry software improperly aligning photos or not recognizing the coded targets included in version 1, we suggest trying our alternative scale, which uses non-coded markers and different reference patterns.
Specific questions about the site of Les Cottés and about access to additional materials may be addressed to Marie Soressi ([email protected]).3D scanning is becoming an increasingly utilized tool in archaeology. In comparison with other methods of 3D registration close-range photogrammetry has the benefits of being relatively inexpensive, mobile, and extremely adaptable for use in field conditions. Here, 3D models of lithic cores from the Châtelperronian, Protoaurignacian, and Early Aurignacian levels of the site of Les Cottés (France) are presented as examples of the quality of model that can be produced using photographs taken with a simple and inexpensive photogrammetry rig.Porter, Samantha T; Roussel, Morgan; Soressi, Marie. (2015). A Simple Photogrammetry Rig for the Reliable Creation of 3D Artifact Models in the Field: Lithic Examples from the Early Upper Paleolithic Sequence of Les Cottés (France). Retrieved from the University Digital Conservancy, http://dx.doi.org/10.13020/D6201D
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
Attribute observations on Mousterian, Châtelperronian, and Protoaurignacian lithic assemblages from the sites of Abri Peyrony, La Rochette, Roc de Combe, and Les Cottés
No full textSee ReadMe.This dataset includes qualitative and quantitative lithic attribute observations on five archaeological assemblages corresponding to three stone tool industries: The Mousterian of Acheulean Tradition (MTA), the Châtelperronian (CP) and the Protoaurignacian (PA). These assemblages are:
- Abri Peyrony (McPherron and Lenoir excavations, L-3A, MTA)
- La Rochette (Delporte excavations, Couche 7, MTA)
- Roc de Combe (Bordes and Labrot excavations, Couche 8, CP)
- Les Cottés (Soressi and Roussel excavations, Level 6, CP)
- Les Cottés (Soressi and Roussel excavations, Level 4, PA)
The data are being released in anticipation of an upcoming article for a special issue of the journal PaleoAnthropology on the Aurignacian. This article will based on the third chapter of Samantha The Porter's dissertation, which is available on the University of Minnesota Digital Conservancy (https://hdl.handle.net/11299/226371). The study uses the Behavioral Approach to Cultural Transmission to address the hypothesis that Neanderthals and Anatomically Modern Homo sapiens were socially intimate, and the latter group influenced the culture and lithic technology of the first.The Leakey FoundationService Régional de l’Archéologie (France)Fyssen FoundationDepartment of Human Evolution of the Max Planck Institute for Evolutionary AnthropologyUniversity of Minnesota Department of AnthropologyUniversity of Minnesota Stout-Wallace FellowshipUniversity of Minnesota Graduate Research PartnershipUniversity of Minnesota Doctoral Dissertation FellowshipPorter, Samantha T; Tostevin, Gilbert; Roussel, Morgan; Soressi, Marie. (2026). Attribute observations on Mousterian, Châtelperronian, and Protoaurignacian lithic assemblages from the sites of Abri Peyrony, La Rochette, Roc de Combe, and Les Cottés. Retrieved from the Data Repository for the University of Minnesota (DRUM), https://hdl.handle.net/11299/277748
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
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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