1,720,965 research outputs found
Lithic Collection from the Early Upper Paleolithic Site of Tvarožná X, Czech Republic
No full textAll artifact models are freely available for download in the form of 3D PLY files. Specific questions about the site of Tvarožná X, access to the physical collection, and additional materials may be addressed to Dr. Petr Škrdla at the Institute of Archaeology, Brno, Czech Republic ([email protected]). Questions about the data pertinent to the lithic attribute analysis should be addressed to Dr. Gilbert Tostevin ([email protected]) while questions about the microarchaeological study of the site should be addressed to Dr. Gilliane Monnier ([email protected]), both of the University of Minnesota. Refit analyses were accomplished by Dr. Petr Škrdla and raw material identifications were made by Dr. Antonín Přichystal (Department of Geology, Masaryk University, Czech Republic) and Dr. Petr Škrdla. Technical specifics about the 3D modeling process and file structure are provided in the collection’s ReadMe_TvaroznaX_3D.txt file.This dataset is composed of the artifact inventory data and 3D models of the lithic artifact collection from the Early Upper Paleolithic open-air site of Tvarožná-Za školou, also known as Tvarožná X, at roughly 49°11’22.0”N by 16°46’19.6”E, near the modern city of Brno in the Czech Republic. The 3D models represent all of the retouched tools, complete flakes, and cores recovered during the 2008 and 2015 excavation seasons conducted by Dr. Gilbert Tostevin and Dr. Gilliane Monnier of the Department of Anthropology, University of Minnesota, in collaboration with Dr. Petr Škrdla of the Institute of Archaeology, Czech Academy of Science, Brno, Czech Republic. The lithic technology of this assemblage reflects a Bohunician core technology with a large diversity of raw material types, relative to other assemblages attributed to that Early Upper Paleolithic industrial type. The 3D collection is composed of 187 models out of the 645 artifacts (over 2.0 cm in maximal dimension) recovered from the piece-plotting and wet-sieving (through 3x3mm mesh) of the 39.75 square meter excavated portion of this site.United States National Science Foundation Grant Number: BCS-1354095 “The Emergence Of Modern Human Behavior: Excavations at Tvarožná-Za skolou”; Co-PIs: Drs. Gilbert Tostevin & Gilliane Monnier; 2014-2018.GAČR (Czech Academy of Sciences) Project 15-19170S “Earliest Modern Human Behavior in Eastern Central Europe”; PI: Dr. Petr Škrdla, 2015-2017.Tostevin, Gilbert; Škrdla, Petr; Monnier, Gilliane; Golubiewski-Davis, Kristina; Porter, Samantha T. (2019). Lithic Collection from the Early Upper Paleolithic Site of Tvarožná X, Czech Republic. Retrieved from the Data Repository for the University of Minnesota (DRUM), https://doi.org/10.13020/hmrj-a558
New radiometric ages for the Early Upper Palaeolithic type locality of Brno-Bohunice (Czech Republic): Comparison of OSL, IRSL, TL and 14C dating results
No full textNew radiometric data are reported from the recent excavation of the type locality of the Early Upper Palaeolithic entity of the Bohunician. Recently obtained radiocarbon (14C) data on charcoal are compared with new Optically Stimulated Luminescence (OSL) dating of sediment. OSL ages were determined on sediment from the archaeological occupation at Brno-Bohunice, as well as from the over- and underlying loessic sediments. Multiple techniques were applied, which all gave congruent results. While a dual protocol (post IR-OSL) failed the quality criteria tests, ages were obtained by Multiple-Aliquot-Additive-Dose (MAAD) on polymineral material and Single-Aliquot-Regeneration (SAR) on fine grain quartz extract as well as on polymineral material. Fading tests show significant loss of Infrared Stimulated Luminescence (IRSL) after storage for 3 and 12 months for one sample, but little or no fading for others. The resulting (uncorrected) age estimates are smaller than those on quartz by OSL methods. The latter are considered to be more reliable estimates of the sedimentation age of these deposits. The measured OSL doses do not show a simple distribution and the lowest 5% was used for age calculation to represent the most likely sedimentation age. The quartz from the loess overlying the archaeological layer is OSL dated to 30.9 ± 3.1 ka, while the sediment for the paleosol which contains the archaeological layer gave an age of 58.7 ± 5.8 ka. The attribution of this paleosol to the Hengelo interstadial is therefore questionable. However, if the Hengelo interstadial is correlated with the Dansgaard/Oeschger (D/O) event 12, statistical agreement within 2-? is achieved. The OSL result for the archaeological layer is in accordance with a weighted average TL date on heated flint artifacts of 48.2 ± 1.9 ka from this layer as well as calibrated radiocarbon data (CalPal Hulu 2007) from nearby locations. However, radiocarbon data on charcoal samples obtained during excavation at Brno-Bohunice 2002 provide age estimates between 30 and 40 ka 14C-years, which translate to approximately (33) 35–44 ka on the calendric time scale according to the Hulu 2007 model. For the underlying loess a depositional age of 104.3 ± 10.6 ka was obtained by OSL. The presented OSL ages indicate that a simple correlation of soil sequences between sites within a region has to be verified by chronometric dating
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
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
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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