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  • Restricted English
    Authors: 
    Frerebeau, Nicolas; Nauleau, Jean-François;
    Publisher: Zenodo

    This dataset contains analyses of 76 ceramic samples from the medieval workshop of Les Landes (Beaupréau-en-Mauges, Maine-et-Loire, France). The chemical composition of the samples was obtained by energy-dispersive X-ray fluorescence spectrometry (EDS). The mineralogical composition of the samples was studied by powder X-ray diffraction (XRD). Method The outer surfaces of all the samples were mechanically removed prior to analysis. EDS The samples were heated to 950°C for one hour after 24h drying at 50°C, weighted for LOI calculation and ground in a tungsten carbide mortar. Measurements were made on pelletized powders. The data were collected by energy dispersive X-ray fluorescence spectrometry (Oxford INCA 300 spectrometer) coupled with scanning electron microscopy imaging (JEOL JSM 6460LV variable pressure microscope). The measurements were carried out under partial vacuum (20 Pa) with an acceleration voltage of 20 kV. The acquisition time is 90 s per spectrum, over the energy range 0-20 keV. For all EDS spectra, the dead time during acquisition is about 30%, for an average number of hits per spectrum greater than 106. The compositions are calculated from Oxford Instruments standards made of metals, synthetic compounds and natural minerals. Six measurements were carried out on each pellet (the area analyzed during each measurement is approximately 5.10-2 mm2). The results are expressed in mass percentages of oxides and are normalized to 100%. Ten major elements were quantified: Na2O, MgO, Al2O3, SiO2, P2O5, K2O, CaO, TiO2, MnO, Fe2O3 (total iron). Although results of elementary composition below 0.5 wt% lack quantitative precision, they are mentioned in the general composition as they hold qualitative information. Values below 0.01% must be considered unreliable. The EDS.csv file contains all the chemical compositions, with the following columns: sample: sample reference. analysis: analysis reference (1 to 6 per sample). date: date of the analysis. laboratory: analysis laboratory. fait, stratigraphy, isolat: stratigraphic unit. artefact: typology. LOI: loss on ignition (percent). Na2O, MgO, Al2O3, SiO2, P2O5, K2O, CaO, TiO2, MnO, Fe2O3 (total): oxide mass percents. XRD The data were collected with a D8 Advance (Bruker) diffractometer in Bragg-Brentano configuration working at 1.6 kW (40 kV, 40 mA) and equipped with a copper anode source (kα1 = 1.5406 ; the kβ ray being removed by a Ni-filter in the diffracted beam). The tube was equipped with a 0.3° divergence slit and an 8 mm anti-scattering slit was mounted in front of the LynxEye© CCD detector. Data recording was performed from 3° to 70° (2θ), in steps of 0.02° with an acquisition time of 2 s, the sample being rotated. The stability of the device was controlled between the different series of measurements by the analysis of a standard (corundum crystal, NIST 1976). The XRD.zip archive contains all diffractograms in the Bruker raw format. The XRD.csv file contains all results expressed in counts, one sample per row, the first line gives the angular position (2 thêta) and the first columns contains the sample code.

  • Other research product . Other ORP type . 2013
    Restricted English
    Authors: 
    Parker, David S;
    Publisher: History
    Country: Canada

    The exam from HIST315 (History) in December 2013

  • Restricted English
    Authors: 
    De Santo, Alessio; Vonlanthen, Yann; Rosselet, Antoine; Degrigny, Christian; Gaspoz, Cédric;
    Publisher: 4-6 September 2016
    Country: Switzerland

    Metal conservators confronted with unknown artefacts rely on previous literature to develop treatment protocols. This search can be tedious given the dissemination of information across corpus of unstructured texts, mainly in the form of research papers and semi-structured databases of artefacts. In order to improve the search of artefacts sharing similar characteristics (metal composition and structure, conservation condition, etc.), this project proposes a hybrid search engine based on a domain ontology. Using a database populated with information resulting from comprehensive investigations of historic and archaeological artefacts, we extracted and selected key concepts and their relations through the use a various lexical analysis tools. Based on this corpus and frequency analysis, we were able to build an ontology of the domain, opening new perspective on information retrieval. Conservators are able to leverage the power of the hybrid search engine to compare their observations on a specific artefact with objects already stored in the database or with indexed research papers. Using keywords to describe corrosion forms they are confronted with, conservators can retrieve artefacts showing similar corrosion phenomena and assess the conservation condition of their artefacts, e.g. diagnosing the stability of metals or determining the location of the limit of the original surface in corrosion product crusts.

  • Restricted English
    Authors: 
    Jakubiak, Krzysztof;
    Publisher: Polish Centre of Mediterranean Archaeology of the University of Warsaw (PCMA)

    Krzysztof Jakubiak

  • Other research product . Other ORP type . 1994
    Restricted English
    Authors: 
    BREMMER, JN;
    Country: Netherlands
  • Restricted English
    Authors: 
    Mende, Doreen;
    Country: Switzerland

    The essay departs from an image that was taken in a room in the Hotel Beau Rivage in Beirut in 1980 while the East-German photographer Horst Sturm and his Palestinian-Lebanese bodyguard Khaled ‘Mein Sandokan’ took a rest. It was taken in a political moment when the Palestinian struggle for the people changed from armed resistance against Israel’s occupation towards the continuation of the militant struggle by the means of photography. It is a moment when the Palestinian press agency searched for a new image strategy for the internationalization of the Cause while the Cold War fought its last territorial combats in proxy battles. It is the same moment when the term ‘solidarity’ equated the declaration of socialist internationalism during the global Cold War exactly in a situation when the Human Rights discourse became a declared objective of United Nation’s rhetoric. It is a moment when the revolutionary image, that portrayed the strength of the people’s struggle, changed towards a humanitarian image that exposed the people’s defeat as an economy of suffering. It is a moment when ‘Showing solidarity had become a bureaucratic act’ as the East-German filmmaker Iris Gusner concludes. Within the double-bind of the informal and the official, or the micro-political and the macro-political, it will become possible to discuss solidarity in struggle between the act of political (socialist) friendship and the beginning of humanitarian violence.

  • Other research product . Other ORP type . 2012
    Restricted English
    Authors: 
    Slitt, Rebecca;
    Publisher: History
    Country: Canada

    The exam from HIST250 (History) in April 2012

  • Restricted English
    Authors: 
    R. Van Lil; S. Van Den Brenk;
    Publisher: DANS Data Station Archaeology
    Country: Netherlands

    In 2015 zijn twee afzonderlijke geofysische surveys uitgevoerd in de Borssele Wind Farm Zone (BWFZ). De gebieden zijn onderzocht met geofysische en geotechnische technieken. Het doel van deze onderzoeken was om een accuraat geologisch model op te stellen en mogelijke obstakels in kaart te brengen. De resultaten van het onderzoek vormen een belangrijke bron van informatie voor aanbestedingspartijen en toekomstige ontwikkelaars van het windpark. De kwaliteit en de resolutie van de geofysische data is voldoende voor een eerste archeologische beoordeling van de waargenomen contacten en beschreven doelen. De resultaten en interpretaties uit de survey rapporten van de uitvoerder kunnen worden gebruikt als basis voor een eerste beoordeling; aanvullende analyse van de ruwe onderzoeksgegevens van potentiële archeologische contacten door een specialist is noodzakelijk. Met betrekking tot de evaluatie en de identificatie van twintig willekeurig gekozen side scan sonar contacten kan worden geconcludeerd dat het haalbaar is om de contacten in meer detail te beschrijven en uit te sluiten dat het hier om archeologische waarden gaat. Dit geldt ook voor het enige scheepswrak dat is aangetroffen.

  • Other research product . Other ORP type . 2008
    Restricted English
    Authors: 
    Moore, BJS;
    Country: United Kingdom
  • Other research product . Other ORP type . 2018
    Restricted English
    Authors: 
    Stultiens, Andrea;
    Country: Netherlands

    Ebifananyi at The Uganda Museum, an exhibition relating to my doctoral research, following up on an earlier exhibition in Antwerp, Belgium and in Kampala part of KLAART18, a ‘public art festival which celebrates public art for and in the city’. The visitors of the show in Antwerp were welcomed with a letter from co-curators of the exhibition Bas Vroege and Joachim Naudts. Here they were welcomed by me: Dear Visitor, You are most welcome to a temporary exhibition about photographs. ‘Ebifananyi’, the Luganda word that is used to signify photographs as well as other likenesses, gives you the opportunity to see a variety of historical photographs made in Uganda. It also invites you to reflect on what you see. In 2011 Canon Griffin and I set up History In Progress Uganda, a platform that digitizes and shares historical photographs. With the help of numerous Ugandan photographers, history enthusiasts and artists I produced eight books with the same title of the exhibition. Each book presents a collection of historical photographs and contemporary responses to it. Last year an exhibition took place in FoMu, the photo museum in Antwerp, Belgium. It presented the content of these books to the Belgian audience. The conditions of this museum cannot be reproduced in Uganda. We here present to you both two- and three dimensional documentation of that show. Photographs are always made from a particular viewpoint and the way they look depends on the technology that was available to the photographer. It is not unusual for photographs to show what someone wants someone else to see rather than to be neutral documentation. They can be used as tools of identification and to estrange people from each other. It is my hope that the photographs that were added to the permanent museum display will make you wonder, cause recognition, show beauty and give you a valuable experience, Andrea Stultiens [See]

Advanced search in
Research products
arrow_drop_down
Searching FieldsTerms
Any field
arrow_drop_down
includes
arrow_drop_down
Include:
471 Research products, page 1 of 48
  • Restricted English
    Authors: 
    Frerebeau, Nicolas; Nauleau, Jean-François;
    Publisher: Zenodo

    This dataset contains analyses of 76 ceramic samples from the medieval workshop of Les Landes (Beaupréau-en-Mauges, Maine-et-Loire, France). The chemical composition of the samples was obtained by energy-dispersive X-ray fluorescence spectrometry (EDS). The mineralogical composition of the samples was studied by powder X-ray diffraction (XRD). Method The outer surfaces of all the samples were mechanically removed prior to analysis. EDS The samples were heated to 950°C for one hour after 24h drying at 50°C, weighted for LOI calculation and ground in a tungsten carbide mortar. Measurements were made on pelletized powders. The data were collected by energy dispersive X-ray fluorescence spectrometry (Oxford INCA 300 spectrometer) coupled with scanning electron microscopy imaging (JEOL JSM 6460LV variable pressure microscope). The measurements were carried out under partial vacuum (20 Pa) with an acceleration voltage of 20 kV. The acquisition time is 90 s per spectrum, over the energy range 0-20 keV. For all EDS spectra, the dead time during acquisition is about 30%, for an average number of hits per spectrum greater than 106. The compositions are calculated from Oxford Instruments standards made of metals, synthetic compounds and natural minerals. Six measurements were carried out on each pellet (the area analyzed during each measurement is approximately 5.10-2 mm2). The results are expressed in mass percentages of oxides and are normalized to 100%. Ten major elements were quantified: Na2O, MgO, Al2O3, SiO2, P2O5, K2O, CaO, TiO2, MnO, Fe2O3 (total iron). Although results of elementary composition below 0.5 wt% lack quantitative precision, they are mentioned in the general composition as they hold qualitative information. Values below 0.01% must be considered unreliable. The EDS.csv file contains all the chemical compositions, with the following columns: sample: sample reference. analysis: analysis reference (1 to 6 per sample). date: date of the analysis. laboratory: analysis laboratory. fait, stratigraphy, isolat: stratigraphic unit. artefact: typology. LOI: loss on ignition (percent). Na2O, MgO, Al2O3, SiO2, P2O5, K2O, CaO, TiO2, MnO, Fe2O3 (total): oxide mass percents. XRD The data were collected with a D8 Advance (Bruker) diffractometer in Bragg-Brentano configuration working at 1.6 kW (40 kV, 40 mA) and equipped with a copper anode source (kα1 = 1.5406 ; the kβ ray being removed by a Ni-filter in the diffracted beam). The tube was equipped with a 0.3° divergence slit and an 8 mm anti-scattering slit was mounted in front of the LynxEye© CCD detector. Data recording was performed from 3° to 70° (2θ), in steps of 0.02° with an acquisition time of 2 s, the sample being rotated. The stability of the device was controlled between the different series of measurements by the analysis of a standard (corundum crystal, NIST 1976). The XRD.zip archive contains all diffractograms in the Bruker raw format. The XRD.csv file contains all results expressed in counts, one sample per row, the first line gives the angular position (2 thêta) and the first columns contains the sample code.

  • Other research product . Other ORP type . 2013
    Restricted English
    Authors: 
    Parker, David S;
    Publisher: History
    Country: Canada

    The exam from HIST315 (History) in December 2013

  • Restricted English
    Authors: 
    De Santo, Alessio; Vonlanthen, Yann; Rosselet, Antoine; Degrigny, Christian; Gaspoz, Cédric;
    Publisher: 4-6 September 2016
    Country: Switzerland

    Metal conservators confronted with unknown artefacts rely on previous literature to develop treatment protocols. This search can be tedious given the dissemination of information across corpus of unstructured texts, mainly in the form of research papers and semi-structured databases of artefacts. In order to improve the search of artefacts sharing similar characteristics (metal composition and structure, conservation condition, etc.), this project proposes a hybrid search engine based on a domain ontology. Using a database populated with information resulting from comprehensive investigations of historic and archaeological artefacts, we extracted and selected key concepts and their relations through the use a various lexical analysis tools. Based on this corpus and frequency analysis, we were able to build an ontology of the domain, opening new perspective on information retrieval. Conservators are able to leverage the power of the hybrid search engine to compare their observations on a specific artefact with objects already stored in the database or with indexed research papers. Using keywords to describe corrosion forms they are confronted with, conservators can retrieve artefacts showing similar corrosion phenomena and assess the conservation condition of their artefacts, e.g. diagnosing the stability of metals or determining the location of the limit of the original surface in corrosion product crusts.

  • Restricted English
    Authors: 
    Jakubiak, Krzysztof;
    Publisher: Polish Centre of Mediterranean Archaeology of the University of Warsaw (PCMA)

    Krzysztof Jakubiak

  • Other research product . Other ORP type . 1994
    Restricted English
    Authors: 
    BREMMER, JN;
    Country: Netherlands
  • Restricted English
    Authors: 
    Mende, Doreen;
    Country: Switzerland

    The essay departs from an image that was taken in a room in the Hotel Beau Rivage in Beirut in 1980 while the East-German photographer Horst Sturm and his Palestinian-Lebanese bodyguard Khaled ‘Mein Sandokan’ took a rest. It was taken in a political moment when the Palestinian struggle for the people changed from armed resistance against Israel’s occupation towards the continuation of the militant struggle by the means of photography. It is a moment when the Palestinian press agency searched for a new image strategy for the internationalization of the Cause while the Cold War fought its last territorial combats in proxy battles. It is the same moment when the term ‘solidarity’ equated the declaration of socialist internationalism during the global Cold War exactly in a situation when the Human Rights discourse became a declared objective of United Nation’s rhetoric. It is a moment when the revolutionary image, that portrayed the strength of the people’s struggle, changed towards a humanitarian image that exposed the people’s defeat as an economy of suffering. It is a moment when ‘Showing solidarity had become a bureaucratic act’ as the East-German filmmaker Iris Gusner concludes. Within the double-bind of the informal and the official, or the micro-political and the macro-political, it will become possible to discuss solidarity in struggle between the act of political (socialist) friendship and the beginning of humanitarian violence.

  • Other research product . Other ORP type . 2012
    Restricted English
    Authors: 
    Slitt, Rebecca;
    Publisher: History
    Country: Canada

    The exam from HIST250 (History) in April 2012

  • Restricted English
    Authors: 
    R. Van Lil; S. Van Den Brenk;
    Publisher: DANS Data Station Archaeology
    Country: Netherlands

    In 2015 zijn twee afzonderlijke geofysische surveys uitgevoerd in de Borssele Wind Farm Zone (BWFZ). De gebieden zijn onderzocht met geofysische en geotechnische technieken. Het doel van deze onderzoeken was om een accuraat geologisch model op te stellen en mogelijke obstakels in kaart te brengen. De resultaten van het onderzoek vormen een belangrijke bron van informatie voor aanbestedingspartijen en toekomstige ontwikkelaars van het windpark. De kwaliteit en de resolutie van de geofysische data is voldoende voor een eerste archeologische beoordeling van de waargenomen contacten en beschreven doelen. De resultaten en interpretaties uit de survey rapporten van de uitvoerder kunnen worden gebruikt als basis voor een eerste beoordeling; aanvullende analyse van de ruwe onderzoeksgegevens van potentiële archeologische contacten door een specialist is noodzakelijk. Met betrekking tot de evaluatie en de identificatie van twintig willekeurig gekozen side scan sonar contacten kan worden geconcludeerd dat het haalbaar is om de contacten in meer detail te beschrijven en uit te sluiten dat het hier om archeologische waarden gaat. Dit geldt ook voor het enige scheepswrak dat is aangetroffen.

  • Other research product . Other ORP type . 2008
    Restricted English
    Authors: 
    Moore, BJS;
    Country: United Kingdom
  • Other research product . Other ORP type . 2018
    Restricted English
    Authors: 
    Stultiens, Andrea;
    Country: Netherlands

    Ebifananyi at The Uganda Museum, an exhibition relating to my doctoral research, following up on an earlier exhibition in Antwerp, Belgium and in Kampala part of KLAART18, a ‘public art festival which celebrates public art for and in the city’. The visitors of the show in Antwerp were welcomed with a letter from co-curators of the exhibition Bas Vroege and Joachim Naudts. Here they were welcomed by me: Dear Visitor, You are most welcome to a temporary exhibition about photographs. ‘Ebifananyi’, the Luganda word that is used to signify photographs as well as other likenesses, gives you the opportunity to see a variety of historical photographs made in Uganda. It also invites you to reflect on what you see. In 2011 Canon Griffin and I set up History In Progress Uganda, a platform that digitizes and shares historical photographs. With the help of numerous Ugandan photographers, history enthusiasts and artists I produced eight books with the same title of the exhibition. Each book presents a collection of historical photographs and contemporary responses to it. Last year an exhibition took place in FoMu, the photo museum in Antwerp, Belgium. It presented the content of these books to the Belgian audience. The conditions of this museum cannot be reproduced in Uganda. We here present to you both two- and three dimensional documentation of that show. Photographs are always made from a particular viewpoint and the way they look depends on the technology that was available to the photographer. It is not unusual for photographs to show what someone wants someone else to see rather than to be neutral documentation. They can be used as tools of identification and to estrange people from each other. It is my hope that the photographs that were added to the permanent museum display will make you wonder, cause recognition, show beauty and give you a valuable experience, Andrea Stultiens [See]

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