1,720,965 research outputs found
Museum als Hüter der Beweise
Full text linkInterview mit Chhay Visoth, Direktor des Tuol-Sleng-Genozid- Museums
Iron and Heritage in Cambodia: A Radiocarbon Dating Approach Between Accelerator Mass Spectrometry, Material Analysis, and Material Culture
No full textInternational audienceRadiocarbon dating by accelerator mass spectrometry (AMS) is an effective method for determining the age of carbon-containing objects, such as organic artifacts. By directly measuring the number of 14C atoms in very small samples, AMS provides precise results even for samples with minimal carbon content. Recent advancements in this technique have broadened its application to the analysis of micro-samples, opening new avenues for archaeological research. Today, it is possible to detect residual 14C traces in ancient ferrous metals, which were used to create a wide range of objects in ancient societies. Iron played a central role in the production of various items within the Khmer Empire (9th-14th centuries). It was used in the form of iron clamps for the temples of Angkor, iron reinforcements in bronze objects, tools, weapons, and a range of everyday items. Many of these archaeological artifacts are accessible through excavations, architectural restoration projects, and museum collections. The ability to date these objects—and, more specifically, to determine the timing of metal production—offers crucial chronological insights into production methods, the organization of production, manufacturing processes, usage patterns, and the networks of metal distribution and circulation. This approach is built on a solid methodological framework (Leroy et al. 2015), focused on identifying the material-specific characteristics of the objects in question. How were these objects made, and where did the metal originate? By combining various analytical techniques, particle accelerator technology reveals the chronological context of these production and manufacturing events. In this context, several series of iron objects from Cambodia have been studied to document the organization of iron production and supply networks (IRANGKOR project). The analysis of a series of iron clamps from temples in Angkor (col. with ASPARA authority), has provided crucial dating, which, in some cases, helps to clarify the periods and phases of construction of these structures. Additionally, a selection of objects from the collection of the National Museum of Cambodia, some with uncertain provenance, were also studied, thus making a significant contribution to the advancement of current knowledge. The analyzed objects and samples exhibit a diversity of shapes and compositions, requiring the implementation of a tailored sampling and analysis protocol. This study outlines the key steps of this approach and synthesizes the results obtained for several iconic monuments of the Angkor complex, as well as objects from museum collections, while providing a broader overview of the discoveries made to date
Iron and Heritage in Cambodia: A Radiocarbon Dating Approach Between Accelerator Mass Spectrometry, Material Analysis, and Material Culture
No full textInternational audienceRadiocarbon dating by accelerator mass spectrometry (AMS) is an effective method for determining the age of carbon-containing objects, such as organic artifacts. By directly measuring the number of 14C atoms in very small samples, AMS provides precise results even for samples with minimal carbon content. Recent advancements in this technique have broadened its application to the analysis of micro-samples, opening new avenues for archaeological research. Today, it is possible to detect residual 14C traces in ancient ferrous metals, which were used to create a wide range of objects in ancient societies. Iron played a central role in the production of various items within the Khmer Empire (9th-14th centuries). It was used in the form of iron clamps for the temples of Angkor, iron reinforcements in bronze objects, tools, weapons, and a range of everyday items. Many of these archaeological artifacts are accessible through excavations, architectural restoration projects, and museum collections. The ability to date these objects—and, more specifically, to determine the timing of metal production—offers crucial chronological insights into production methods, the organization of production, manufacturing processes, usage patterns, and the networks of metal distribution and circulation. This approach is built on a solid methodological framework (Leroy et al. 2015), focused on identifying the material-specific characteristics of the objects in question. How were these objects made, and where did the metal originate? By combining various analytical techniques, particle accelerator technology reveals the chronological context of these production and manufacturing events. In this context, several series of iron objects from Cambodia have been studied to document the organization of iron production and supply networks (IRANGKOR project). The analysis of a series of iron clamps from temples in Angkor (col. with ASPARA authority), has provided crucial dating, which, in some cases, helps to clarify the periods and phases of construction of these structures. Additionally, a selection of objects from the collection of the National Museum of Cambodia, some with uncertain provenance, were also studied, thus making a significant contribution to the advancement of current knowledge. The analyzed objects and samples exhibit a diversity of shapes and compositions, requiring the implementation of a tailored sampling and analysis protocol. This study outlines the key steps of this approach and synthesizes the results obtained for several iconic monuments of the Angkor complex, as well as objects from museum collections, while providing a broader overview of the discoveries made to date
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
Iron and Heritage in Cambodia: A Radiocarbon Dating Approach Between Accelerator Mass Spectrometry, Material Analysis, and Material Culture
No full textInternational audienceRadiocarbon dating by accelerator mass spectrometry (AMS) is an effective method for determining the age of carbon-containing objects, such as organic artifacts. By directly measuring the number of 14C atoms in very small samples, AMS provides precise results even for samples with minimal carbon content. Recent advancements in this technique have broadened its application to the analysis of micro-samples, opening new avenues for archaeological research. Today, it is possible to detect residual 14C traces in ancient ferrous metals, which were used to create a wide range of objects in ancient societies. Iron played a central role in the production of various items within the Khmer Empire (9th-14th centuries). It was used in the form of iron clamps for the temples of Angkor, iron reinforcements in bronze objects, tools, weapons, and a range of everyday items. Many of these archaeological artifacts are accessible through excavations, architectural restoration projects, and museum collections. The ability to date these objects—and, more specifically, to determine the timing of metal production—offers crucial chronological insights into production methods, the organization of production, manufacturing processes, usage patterns, and the networks of metal distribution and circulation. This approach is built on a solid methodological framework (Leroy et al. 2015), focused on identifying the material-specific characteristics of the objects in question. How were these objects made, and where did the metal originate? By combining various analytical techniques, particle accelerator technology reveals the chronological context of these production and manufacturing events. In this context, several series of iron objects from Cambodia have been studied to document the organization of iron production and supply networks (IRANGKOR project). The analysis of a series of iron clamps from temples in Angkor (col. with ASPARA authority), has provided crucial dating, which, in some cases, helps to clarify the periods and phases of construction of these structures. Additionally, a selection of objects from the collection of the National Museum of Cambodia, some with uncertain provenance, were also studied, thus making a significant contribution to the advancement of current knowledge. The analyzed objects and samples exhibit a diversity of shapes and compositions, requiring the implementation of a tailored sampling and analysis protocol. This study outlines the key steps of this approach and synthesizes the results obtained for several iconic monuments of the Angkor complex, as well as objects from museum collections, while providing a broader overview of the discoveries made to date
Iron and Heritage in Cambodia: A Radiocarbon Dating Approach Between Accelerator Mass Spectrometry, Material Analysis, and Material Culture
No full textInternational audienceRadiocarbon dating by accelerator mass spectrometry (AMS) is an effective method for determining the age of carbon-containing objects, such as organic artifacts. By directly measuring the number of 14C atoms in very small samples, AMS provides precise results even for samples with minimal carbon content. Recent advancements in this technique have broadened its application to the analysis of micro-samples, opening new avenues for archaeological research. Today, it is possible to detect residual 14C traces in ancient ferrous metals, which were used to create a wide range of objects in ancient societies. Iron played a central role in the production of various items within the Khmer Empire (9th-14th centuries). It was used in the form of iron clamps for the temples of Angkor, iron reinforcements in bronze objects, tools, weapons, and a range of everyday items. Many of these archaeological artifacts are accessible through excavations, architectural restoration projects, and museum collections. The ability to date these objects—and, more specifically, to determine the timing of metal production—offers crucial chronological insights into production methods, the organization of production, manufacturing processes, usage patterns, and the networks of metal distribution and circulation. This approach is built on a solid methodological framework (Leroy et al. 2015), focused on identifying the material-specific characteristics of the objects in question. How were these objects made, and where did the metal originate? By combining various analytical techniques, particle accelerator technology reveals the chronological context of these production and manufacturing events. In this context, several series of iron objects from Cambodia have been studied to document the organization of iron production and supply networks (IRANGKOR project). The analysis of a series of iron clamps from temples in Angkor (col. with ASPARA authority), has provided crucial dating, which, in some cases, helps to clarify the periods and phases of construction of these structures. Additionally, a selection of objects from the collection of the National Museum of Cambodia, some with uncertain provenance, were also studied, thus making a significant contribution to the advancement of current knowledge. The analyzed objects and samples exhibit a diversity of shapes and compositions, requiring the implementation of a tailored sampling and analysis protocol. This study outlines the key steps of this approach and synthesizes the results obtained for several iconic monuments of the Angkor complex, as well as objects from museum collections, while providing a broader overview of the discoveries made to date
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
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