Journal of Lithic Studies最新文献

{"title":"Establishing a new workflow in the study of core reduction intensity and distribution","authors":"D. Lombao, J. Rabuñal, Arturo Cueva-Temprana, Marina Mosquera, J. I. Morales","doi":"10.2218/jls.7257","DOIUrl":"https://doi.org/10.2218/jls.7257","url":null,"abstract":"New methodological approaches focused on studying the reduction and use-life of stone tools have emerged in recent years, enabling researchers to move beyond strict technical and technological characterizations and explore specific aspects of occupation dynamics and economic management of resources. Previous studies have shown the importance of reduction distributions of individual measurements rather than averaged values. In this sense, survival analysis, and more specifically Weibull distributions, are one of the main inferential tools used in reduction studies. However, the resolution of Weibull distribution obtained from different methods has not been tested experimentally. In this paper, we present an evaluation of some of the main methods used in the study of core reduction intensity, such as the Volumetric Reconstruction Method, the Scar Density Index, and the non-cortical surface percentage. Our results show 1) strong and positive correlations between these approaches and actual reduction intensity, 2) similar Weibull distributions for non-cortical surface percentage, Volumetric Reconstruction Method, and logarithmic transformation of Scar Density Index. In addition, 3) the results from each method show a similar intra-assemblage variation, with a high percentage of agreement between them. \u0000As a result, all the evaluated proposals are useful and reliable methods for estimating the degree of reduction. Finally, a workflow is proposed for approaching reduction in archaeological assemblages by integrating different methods in the same study.","PeriodicalId":44072,"journal":{"name":"Journal of Lithic Studies","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2023-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45927452","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"What lies in between: Levallois, discoid and intermediate methods","authors":"Guillermo Bustos-Pérez, J. Baena, M. Vaquero","doi":"10.2218/jls.7132","DOIUrl":"https://doi.org/10.2218/jls.7132","url":null,"abstract":"Lithic artefacts are usually associated with the different knapping methods used in their production. Flakes exhibit metric and technological features representative of the flaking method used to detach them. However, lithic production is a dynamic process in which discrete methods can be blurred, and in which features can vary throughout the process. An intermediate knapping method between the discoid and Levallois is commonly referred to under an umbrella of terms (the present research uses the term hierarchical discoid), and is associated with a broad geographical and chronological distribution throughout the Early and Middle Palaeolithic. This intermediate knapping strategy exhibits features of both the discoid and Levallois knapping methods, raising the question of the extent to which flakes from the three knapping methods can be differentiated and, when one is mistaken for another, the direction of confusion. An experimental assemblage of flakes detached by means of the three methods was used along with an attribute analysis and machine learning models in an effort to identify the knapping methods employed. In general, our results were able to very effectively differentiate between the three knapping methods when a support vector machine with polynomial kernel was used. Our results also underscored the singularity of flakes detached by means of Levallois reduction sequences, which yielded outstanding identification values, and were rarely erroneously attributed to either of the other two knapping methods studied. Mistaking the products of the discoid and hierarchical discoid methods was the most common direction of confusion, although a good identification value was achieved for discoid flakes and an acceptable value for hierarchical discoid flakes. This shows the potential applicability of machine learning models in combination with attribute analysis for the identification of these knapping methods among flakes.","PeriodicalId":44072,"journal":{"name":"Journal of Lithic Studies","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2023-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48391494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cal Sitjo: A new Mesolithic to Neolithic sequence in a chert-rich region (Sant Martí de Tous, NE Iberia)","authors":"B. Gómez de Soler, E. Allué, Javier Cámara, G. Campeny, M. Chacón, Celia Díez-Canseco, Vicenç Guinart, Bàrbara Mas, Miguel Soares-Remiseiro, M. Soto, Alfredo Suesta, J. Vallverdú","doi":"10.2218/jls.7487","DOIUrl":"https://doi.org/10.2218/jls.7487","url":null,"abstract":"Cal Sitjo is a new archaeological sequence located in a chert-rich region of the NE Iberian Peninsula, in the town of Sant Martí de Tous (Anoia, Barcelona). The area has undergone significant anthropisation and several archaeological sites (e.g., Vilars de Tous), quarries and workshops for the exploitation of chert (e.g., La Guinardera) have been documented, corresponding to different periods. The abundance of chert made this region an almost obligatory passageway for hunter-gatherer communities such as those occupying the nearby cliffs of Cinglera del Capelló (Capellades), located at a direct distance of 15 km, as well as an ideal settlement for later farming communities. \u0000Discovered in 2019, the first excavation campaign was carried out in the fall of 2020. Dates have been obtained from a known sequence of around 8 m, providing a chronological framework that ranges from the Mesolithic to the Middle Neolithic. The preliminary results of this excavation have brought to light lithics, ceramics and charcoals from the Neolithic levels (Levels 3 and 4), and faunal, lithic and charcoal remains from the Mesolithic levels (cleaning section). \u0000Our preliminary results confirm that this sequence is an ideal location for a diachronic study of the evolution from the last hunter-gatherers to the first farmers, from a paleoenvironmental and technological perspective, as well as in terms of chert management and distribution in a territory with a great abundance of this raw material.","PeriodicalId":44072,"journal":{"name":"Journal of Lithic Studies","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2023-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48309499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Obsidian Lithic Technology, Chaîne Opératoire and Symbolic Meaning in the Northern Hualfín Valley (Northwest Argentina) during Late - Inka Period","authors":"Emiliano Bentivenga, Julieta Lynch","doi":"10.2218/jls.7240","DOIUrl":"https://doi.org/10.2218/jls.7240","url":null,"abstract":"The main objective of this research is to analyse the lithic technology applied to obsidian, a raw material popular amongst pre-Columbian populations from Northwestern Argentina (NWA) because of its social and symbolic value. The analysed assemblage comes from the archaeological site of Villavil 2 (VV2), located in the Hualfín Valley (Catamarca, Argentina) and distant ca. 100 - 200 kms from the nearest sources of this raw material. VV2 was discovered in 2015 by one of the authors and shows a particular presence of rock art which had not previously been registered in this area. The site was associated to the Late and Inka Period (ca. 10th - 16th centuries CE). So far, we suggest that this was a place of temporal, but periodical use that best fits with what we would call a ceremonial space. \u0000The assemblage comprises the totality of obsidian elements collected from both superficial and stratigraphic contexts. It was divided into three typological classes: tools (projectile points), flakes with natural sharp edges (FNSE) and waste products (WP). We did not identify the presence of cores. The analysis considered the following variables: knapping methods and techniques, size, amount of cortex, flake type and edge types. \u0000At VV2, points are the only retouched tools made of obsidian. They correspond to the triangular unstemmed concave-based type, very common during the Late-Inka Periods, and they were shaped using the perimetral bifacial pressure technique, possibly from flake blanks. FNSEs’ size is small, and they present scarce cortex. On the other hand, the abundance of very small-sized WPs is remarkable. They were found in the same stratigraphic context and attest a complete finish of the points (edge retouch). \u0000The results let us infer that the point-shaping tasks were carried out in situ. Moreover, the implemented technology involved both major production efforts and skills, that contrast with those involved in local raw material knapping. It is possible that this curated strategy was not related to the difficulty of accessing this allochthonous material. Instead, these choices could reflect social and symbolic meanings. According to linguistic and ethnohistoric information, the obsidian brightness and transparency are propitiatory to win the favour of the w'akas. Furthermore, in NWA the obsidian long-distance exchange is an ancient pre-Columbian tradition that lasted for a long time. Obtaining obsidian could display the ability of a social group to access distant resources and legitimize their political status. Nevertheless, we cannot forget that this raw material also was very important for making different artefacts for subsistence activities.","PeriodicalId":44072,"journal":{"name":"Journal of Lithic Studies","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2023-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45933079","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Techno -economy of lithic raw materials in Piedmont (north-western Italy). A first life-like scenario","authors":"Sara Daffara, G. Berruti, Sandro Caracausi, Maite García‐Rojas, M. Arzarello","doi":"10.2218/jls.7322","DOIUrl":"https://doi.org/10.2218/jls.7322","url":null,"abstract":"Data about Palaeolithic peopling, settlement dynamics and techno-economy of the south-western margin of the Alpine region are sketchy. In this area, the lack of systematic research and the scarcity of lithic raw materials, spread the idea that Piedmont was not inhabited during Palaeolithic. In 2009, the re-starting of the excavations at the Ciota Ciara cave, gave rise to new questions and to the development of research projects at a regional scale. \u0000The Ciota Ciara cave is the only Middle Palaeolithic site object of multidisciplinary and systematic investigations. Its lithic assemblage, analysed through a techno-economic approach, allows to understand in detail the technological choices and the land mobility of the Neanderthal groups on a local and sub-regional scale. Other Middle Palaeolithic assemblages are known in the region and are all issued from surface collections. They come from the northern part of the region, from Vaude Canavesane, Trino, Baragge biellesi and Colline Novaresi. The technological study of these assemblages led to the identification of strong similarities in the technological choices of the Middle Palaeolithic human groups: they based their technology on the exploitation of vein quartz, a rock diffused all over the regional territory, from time to time accompanied by other local (spongolite, rhyolite, metamorphic rocks, jasper) and allochthonous (radiolarite and flint) lithic resources, with technological adaptation to their quality and mechanical properties both when it comes to predetermined methods (Levallois and discoid) and when expedient reduction sequences are used. Concerning Upper Palaeolithic, the only lithic assemblage issued from an archaeological excavation (and therefore with a clear stratigraphic context) is that from the Epigravettian site of Castelletto Ticino. Other lithic artefacts referable on a techno-typological basis to Upper Palaeolithic are from Trino and Colline Novaresi. As for Middle Palaeolithic, the techno-economic approach used in the analysis of these lithic assemblages, allow to have, for the first time, reliable data at a regional scale. \u0000In this work we present the data obtained after about ten years of research in Piedmont: they outline a scenario where, even in the limits of analysis mostly based on materials issued from surface collections, we can see both clear differences between the Middle and the Upper Palaeolithic technological behaviours and hypothesise the land mobility of the hunter-gatherers’ groups that inhabited the region.","PeriodicalId":44072,"journal":{"name":"Journal of Lithic Studies","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2023-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46025421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Linking Neolithic lakeshore settlements through raw material of siliceous artefacts","authors":"Jehanne Affolter, Helena Wehren, C. Heitz, R. Stapfer, Lea Emmenegger, Martin Hinz, G. Thierrin-Michael, A. Hafner","doi":"10.2218/jls.4446","DOIUrl":"https://doi.org/10.2218/jls.4446","url":null,"abstract":"This paper presents the results of the provenience analysis of siliceous artefacts from Neolithic lakeshore settlements studied in the scope of the SNSF-project MET (“Mobilities, entanglements and transformations in Neolithic societies on the Swiss Plateau (3900-3500 BCE) supported by the Swiss National Science Foundation (Project No 100011 156205). The aim of this paper is to compare the cultural entanglements as defined by the pottery studies with the regions of origins of the knappable siliceous sedimentary rocks (KSSR) raw materials. The analysed siliceous artefacts were found in cultural layers of wetland settlements in the Northern Alpine Foreland, most of which are dated dendrochronologically with extreme precision. The sources of the raw materials were determined by the identification of the sedimentary microfacies of the siliceous artefacts, which allows the accurate location of the exploited outcrops without destroying the artefacts. This enabled detailed insights into complex entanglements, ties and mobility patterns in the raw material procurement between settlement communities on the Swiss Plateau, southern Germany and eastern France. Furthermore, these results were compared visually with stylistic entanglements in the pottery of the 4th millennium BCE. As a first attempt in this direction, this paper shows the potential of studies on mobility patterns when different find categories are studied in combination regarding their raw materials but also their typology.","PeriodicalId":44072,"journal":{"name":"Journal of Lithic Studies","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2023-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44969790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reconnaissance a new Palaeolithic site at Al-Huwaidy in Ha’il region, northwest Saudi Arabia","authors":"A. Nassr, Mohammed Al-Hajj, Ali Tueaiman, Ahmed Elhassan","doi":"10.2218/jls.6550","DOIUrl":"https://doi.org/10.2218/jls.6550","url":null,"abstract":"Ha’il region in northwest Saudi Arabia is characterized by the presence of oases, flat plains, Paleo-lakes, and lava fields, which are some of the main landscape characteristics in which Palaeolithic sites have been found in the region. It is located on one of the routes of early hominin dispersal across Arabia. The ongoing archaeological research made by the Paleodeserts and Disperse projects have recorded several Acheulean and Middle Palaeolithic sites in such localities as Jubbah basin in the Nefud desert (Groucutt et al. 2021; Petraglia et al. 2015; 2019), yet large parts of the region are still unexplored. \u0000The ground archaeological survey conducted by the authors at Al-Huwaidy village, 70 km southwest of Ha’il town, has led to the discovery of a unique Palaeolithic site on the margin of a palaeo-oasis, close to a volcanic mountain. The archaeological site consists of an agglomeration spread of lithics covering an area of basaltic field and outcrops. Numerous handaxes have been documented on the surface and the profiles of current water canal shafts. The site setting and the quantity and quality of lithics from Large Cutting Tools (LCT), including typical handaxes, foliate handaxes, Acheulean cores and flakes, indicate that the site represents a new and interesting extension of Palaeolithic archaeology in the northwest of Arabia similar to Palaeolithic characteristics in the Jubbah basin. Thus, this discovery has a direct relevance in assessing the distribution of Palaeolithic sites in the Ha’il region, showing that they not only occur in the northern area (Nefud desert), but also in the different landscape (basaltic lava field) in the southern part of the region.","PeriodicalId":44072,"journal":{"name":"Journal of Lithic Studies","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2022-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68262349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Time, memory and alterity in prehistoric lithic technology: Synthesis and perspectives of the French technogenetic approach","authors":"Louis De Weyer, Antonio Pérez, Rodolphe Hoguin, H. Forestier, E. Böeda","doi":"10.2218/jls.7020","DOIUrl":"https://doi.org/10.2218/jls.7020","url":null,"abstract":"The technogenetic approach in the field of prehistoric lithic technology studies originated in the late 1980s. Traditional approaches, such as typology and production technology, have tended to approach prehistoric lithic objects through their socio-cultural and economic dimensions, without really considering the existence of a technogenesis prior to these contingencies. The apprehension of this technogenetic dimension in prehistory will call upon both the philosophy and the anthropology of techniques to lead to a double approach of the artefacts: a technogenetic approach of the lithic object according to the technical criteria of its genesis; and a psychosocial approach of the object according to the criteria proper to its artisanal production within a major technical system. The objective of this article is to identify two fundamental existences constituting the technical object, one internal (technogenetic) with technical lineages and the other external (psychosocial) with technical trajectories. The spatio-temporal distribution of prehistoric technical otherness on different continents has logically led to new questions, findings and new criteria of analysis. On this basis, our approach will aim to revisit the main conceptual axes of the foundations of the technological approach, to clarify old questions while developing new expertise. Through the application of key concepts such as time, memory and otherness, an overall methodology will also be discussed and will help proposing its epistemological line.","PeriodicalId":44072,"journal":{"name":"Journal of Lithic Studies","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2022-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45882828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Temps, mémoire et altérité en technologie lithique: synthèse et perspectives de l’approche technogénétique française","authors":"Louis De Weyer, Antonio Pérez, Rodolphe Hoguin, H. Forestier, Éric Boëda","doi":"10.2218/jls.7021","DOIUrl":"https://doi.org/10.2218/jls.7021","url":null,"abstract":"L'approche technogénétique dans le domaine des études en technologie lithique préhistorique trouve son origine à la fin des années 1980. Les approches traditionnelles comme de la typologie à la technologie productionnelle ont eu tendance à aborder les objets de la préhistoire à travers leurs dimensions socioculturelle et économique, sans vraiment considérer l’existence d’une technogenèse antérieure à ces contingences. L’appréhension de cette dimension technogénétique en préhistoire convoquera à la fois la philosophie et l’anthropologie des techniques pour amener à une double approche des artefacts: une approche technogénétique de l’objet lithique selon les critères techniques de sa genèse; et une approche psychosociale de l’objet selon les critères propres à sa production artisanale au sein d’un système technique majeur. L’objectif de cet article est d’identifier deux existences fondamentales constituantes de l’objet technique, l’une interne (technogénétique) avec des lignées techniques et l’autre externe (psychosociale) avec des trajectoires techniques. La distribution spatio-temporelle de l’altérité technique préhistorique sur différents continents a logiquement amené à de nouvelles questions, constats et de nouveaux critères d’analyse. Sur cette base, notre démarche visera à revisiter les principaux axes conceptuels des fondements de l’approche technologique, à préciser les anciennes questions tout en développant de nouvelles expertises. À travers l’application de concepts clés comme celui de temps, de mémoire et d’altérité, une méthodologie d’ensemble sera également rediscutée et proposera une ligne de fuite épistémologique.","PeriodicalId":44072,"journal":{"name":"Journal of Lithic Studies","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2022-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44392565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tiempo, memoria y alteridad en tecnología lítica: síntesis y perspectivas del enfoque tecnogenético francés","authors":"Louis De Weyer, A. Pérez, Rodolphe Hoguin, Hubert Forestier, Eric Boëda","doi":"10.2218/jls.7022","DOIUrl":"https://doi.org/10.2218/jls.7022","url":null,"abstract":"En el campo de los estudios en tecnología lítica prehistórica, el enfoque tecnogenético tiene su origen a fines de los años 1980. Los enfoques tradicionales, de la tipología a la tecnología de producción, tienden a abordar los objetos líticos de la prehistoria a través de sus dimensiones sociocultural y económica, sin realmente considerar la existencia de una tecnogénesis anterior a estas contingencias. La aprehensión de esta dimensión tecnogenética en prehistoria requerirá tanto de la filosofía como de la antropología de las técnicas para conducir a un enfoque dual de los artefactos: un enfoque tecnogenético del objeto lítico según los criterios técnicos relativos a su génesis; y un enfoque psicosocial del objeto según los criterios propios de su producción artesanal, en el seno de un sistema técnico mayor. El objetivo de este artículo es identificar dos existencias fundamentales constituyentes del objeto técnico, una interna (tecnogenética) con linajes técnicos y otra externa (psicosocial) con trayectorias técnicas. La distribución espacio-temporal de la alteridad técnica prehistórica en diferentes continentes ha conducido lógicamente a nuevas preguntas, constataciones y nuevos criterios de análisis. Sobre esta base, nuestro trabajo tendrá como objetivo revisar los principales ejes conceptuales de los fundamentos del enfoque tecnológico, así como aclarar viejas preguntas y desarrollar nuevos criterios de estudio. Mediante la aplicación de conceptos clave como tiempo, memoria y alteridad, se volverá también a discutir una metodología global que propondrá una línea de fuga epistemológica.","PeriodicalId":44072,"journal":{"name":"Journal of Lithic Studies","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2022-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48265089","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}