975 research outputs found

    Franz Cumont’s Syrian tour: a Belgian archaeologist in the Ottoman empire

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    This paper highlights the Western scientific traveller as an intermediary between Orient and Occident around the turn of the nineteenth century by presenting a case study on the Belgian archaeologist and historian of religions, Franz Cumont (1868-1947), and the dossier of the journey he undertook in Northern Syria, May 1907. After a discussion of this classicist's relation to the Orient, I give an account of Cumont's Syrian tour, based on three different writing contexts: the academic output of the expedition in Northern Syria, Cumont's private travel notes, and both his active and passive correspondence. Still focusing on the case of Franz Cumont and the dossier of his archaeological journey in 1907, in a third and fourth section I examine two ways in which the Orient was brought to the Occident by the scientific traveller. Firstly, by the acquisition and transfer of archaeological material from the Orient to the Occident, providing Western institutions with Eastern artefacts. Secondly, by the transfer of ideas and images: how did the Occidental scientific traveller, the archaeologist, convey his experiences with the "real" Orient to the European readership? I will disclose how Franz Cumont expressed his evaluation of the ancient Orient, which he studied, and the contemporary Orient, which he experienced during his travels

    Insights on the spatial configuration of collective spaces within forming dynamics: the relation between infrastructure and urban transformation in Plaça de les Glòries Catalanes

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    The research seeks to produce insights on the spatial configuration of collective spaces where large scale infrastructure propels urban transformation. Focusing on the meaning, character and programmatic qualities of urban spaces in transformation as outcomes of fluctuating processes, it deals with complex spatial forming dynamics of urban streetscapes: the non-traditional conjugations of spaces, boundaries and territories. These spaces foster unexpected notions of proximity, territoriality, permeability and critical boundaries, investigated by means of specific parameters manifesting and interacting in time. This can help upgrade the design of architecture and urban projects to innovative techno-cultural practices and improve their integration in the urban fabric; urgent matter within the hyper-complex conditions of contemporary urban realities. The case of Plaça de les Glòries Catalanes in Barcelona, where a car-oriented open-space based on a variety of spatial manifestations turns into a formalized urban centrality, is used to unveil the complex convergence of streetscapes and urban infrastructures in contemporary urban transformations

    Comparison of motor stator teeth built of soft magnetic composite and laminated silicon steel sheets in an axial flux permanent magnet synchronous machine

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    This paper compares the iron losses generated by the concentrated excitation windings for the axial flux permanent magnet synchronous machine stator core elements constructed with laminated silicon steel sheets and soft magnetic composites. The two types of eddy current losses for laminated silicon steel sheets are taken into account. A 3D nonlinear finite element method in the time domain is used to calculate all flux density distributions for various frequencies and different magnitudes. Experimental measurements are also performed to validate the 3D model

    Pitfalls in histone propionylation during bottom-up mass spectrometry analysis

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    Despite their important role in regulating gene expression, posttranslational histone modifications remain technically challenging to analyze. For identification by bottom-up MS, propionylation is required prior to and following trypsin digestion. Hereby, more hydrophobic peptides are generated enabling RP HPLC separation. When histone dynamics are studied in a quantitative manner, specificity, and efficiency of this chemical derivatization are crucial. Therefore we examined eight different protocols, including two different propionylation reagents. This revealed amidation (up to 70%) and methylation (up to 9%) of carboxyl groups as a side reaction. Moreover, incomplete (up to 85%) as well as a specific propionylation (up to 63%) can occur, depending on the protocol. These results highlight the possible pitfalls and implications for data analysis when doing bottom-up MS on histones

    CED: Color Event Camera Dataset

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    Event cameras are novel, bio-inspired visual sensors, whose pixels output asynchronous and independent timestamped spikes at local intensity changes, called 'events'. Event cameras offer advantages over conventional frame-based cameras in terms of latency, high dynamic range (HDR) and temporal resolution. Until recently, event cameras have been limited to outputting events in the intensity channel, however, recent advances have resulted in the development of color event cameras, such as the Color-DAVIS346. In this work, we present and release the first Color Event Camera Dataset (CED), containing 50 minutes of footage with both color frames and events. CED features a wide variety of indoor and outdoor scenes, which we hope will help drive forward event-based vision research. We also present an extension of the event camera simulator ESIM that enables simulation of color events. Finally, we present an evaluation of three state-of-the-art image reconstruction methods that can be used to convert the Color-DAVIS346 into a continuous-time, HDR, color video camera to visualise the event stream, and for use in downstream vision applications.Comment: Conference on Computer Vision and Pattern Recognition Workshop

    Efficient, broadband and compact metal grating couplers for silicon-on-insulator waveguides

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    Metal grating couplers for Silicon-on-Insulator waveguides are proposed. A silver grating coupler with 33% coupling efficiency is designed. A gold gating coupler prototype is fabricated using Focused Ion Beams demonstrating over 10% coupling efficiency. (C) 2007 Optical Society of Americ
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