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Textes d'étude. R. Léon Wagner
1951
Speculum
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Marcel Frangon, ‘Rondeaux tercets,’ SpecuLuM, xxiv (1949), 87-92. C. C. Olson, ‘Chaucer and the Music of the XIVth century,’ Specutum, xvi (1941), 64. E. Droz, G. Thibault, Y. ...
Wagner complains that, in France, French literature is taught as if it began in the sixteenth century.? ...
doi:10.2307/2852436
fatcat:2kvqz3qcwjh2hcs4g7ztewmo2q
Video-Dna: Large-Scale Server-Side Watermarking
2007
Zenodo
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Publication in the conference proceedings of EUSIPCO, Poznan, Poland, 2007
doi:10.5281/zenodo.40672
fatcat:otk6xlqdhjdzbmdbo6diprkxsu
Conformal quantum field theory in various dimensions
[article]
2009
arXiv
pre-print
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Various relations between conformal quantum field theories in one, two and four dimensions are explored. The intention is to obtain a better understanding of 4D CFT with the help of methods from lower dimensional CFT.
arXiv:0908.3391v1
fatcat:7ltfiskdfvg6xayeyofq4ansza
"Bürgerarbeit" und "mitfühlender Konservatismus"
2001
WiSt - Wirtschaftswissenschaftliches Studium
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Bundespräsident Rau hat zu überlegen gegeben, ob ehrenamtliches Engagement durch Rentenanwartschaften belohnt werden sollte (Rau, 2000), d.h. dass praktisch eine -wenn auch bescheidene -staatliche Bezahlung für (ausgewählte?) ehrenamtlich Tätige erfolgen würde. Wäre eine solche Unterstützung "informeller Arbeit" sinnvoll? Die Frage soll vor dem Hintergrund diskutiert werden, dass in Deutschland viele Sozialwissenschaftler glauben, "informelle" Arbeit, die außerhalb der Erwerbswirtschaft
doi:10.15358/0340-1650-2001-12-635
fatcat:odejnzchr5hvbmjckqyqyyzoxy
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... wird, könnte eine Lösung des Arbeitslosenproblems sein (vgl. insbes. Beck, 2000). Die Frage hat auch insofern an Bedeutung gewonnen, weil der US-amerikanische Präsident George W. Bush mit seinem Programm des mitfühlenden Konservatismus (vgl. dazu Olasky, 1996) professionelle Sozialarbeit durch informelle ehrenamtliche Arbeit ersetzen will, da er davon überzeugt ist, dass dadurch die Qualität "sozialer Dienste" besser wird und Effizienzverluste, die durch "Abgabewiderstand" entstehen, vermieden werden können.
Video Coding With Quad-Trees And Adaptive Vector Quantization
2015
Zenodo
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Publication in the conference proceedings of EUSIPCO, Tampere, Finland, 2000
doi:10.5281/zenodo.37412
fatcat:lw2thk7rzzfgdf2e6qqtttrtte
Tunable Feshbach resonances and their spectral signatures in bilayer semiconductors
[article]
2021
arXiv
pre-print
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Feshbach resonances are an invaluable tool in atomic physics, enabling precise control of interactions and the preparation of complex quantum phases of matter. Here, we theoretically analyze a solid-state analogue of a Feshbach resonance in two dimensional semiconductor heterostructures. In the presence of inter-layer electron tunneling, the scattering of excitons and electrons occupying different layers can be resonantly enhanced by tuning an applied electric field. The emergence of an
arXiv:2105.01080v1
fatcat:eabqm5ycvbhflebdhqkkb2dvfe
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... yer Feshbach molecule modifies the optical excitation spectrum, and can be understood in terms of Fermi polaron formation. We discuss potential implications for the realization of correlated Bose-Fermi mixtures in bilayer semiconductors.
The catastrophic final flooding of Doggerland by the Storegga Slide tsunami
2008
Documenta Praehistorica
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Around 8200 calBP, large parts of the now submerged North Sea continental shelf ('Doggerland') were catastrophically flooded by the Storegga Slide tsunami, one of the largest tsunamis known for the Holocene, which was generated on the Norwegian coastal margin by a submarine landslide. In the present paper, we derive a precise calendric date for the Storegga Slide tsunami, use this date for reconstruction of contemporary coastlines in the North Sea in relation to rapidly rising sea-levels, and
doi:10.4312/dp.35.1
fatcat:4j334wowtfffrb447ggip35fke
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... scuss the potential effects of the tsunami on the contemporaneous Mesolithic population. One main result of this study is an unexpectedly high tsunami impact assigned to the western regions of Jutland.
Morale sociale: Lecons professees au College libre des Sciences sociales.MM. G. Belot, Marcel Bernes , Brunschvigg F. Buisson , Dauriac, Delbit, Ch. Gide, M. Kovalevsky , Malapert, R. P. Maumus , De Roberty , G. Sorel , Le Pasteur Wagner
1904
American Journal of Sociology
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SoreEL, LE Pas- TEUR WAGNER. Préface d’EmiLe Bonrrovux. Paris: Félix Alcan, 1899. Pp. 319. ...
doi:10.1086/211260
fatcat:mstd6jug65call7ppjefa3qzhm
Felsenkeller 5 MV underground accelerator: Towards the Holy Grail of Nuclear Astrophysics 12C(α, γ)16O
2018
EPJ Web of Conferences
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Low-background experiments with stable ion beams are an important tool for putting the model of stellar hydrogen, helium, and carbon burning on a solid experimental foundation. The pioneering work in this regard has been done by the LUNA collaboration at Gran Sasso, using a 0.4 MV accelerator. The present contribution reviews the status of the project for a higher-energy underground accelerator in Felsenkeller, Germany. Results from γ-ray, neutron, and muon background measurements in the
doi:10.1051/epjconf/201817801008
fatcat:fofppqtaanbvxfgaawfceumivi
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... eller underground site in Dresden, Germany, show that the background conditions are satisfactory. Two tunnels of the Felsenkeller site have recently been refurbished for the installation of a 5 MV high-current Pelletron accelerator. Civil construction work has completed in March 2018. The accelerator will provide intense, 50 µA, beams of 1 H + , 4 He + , and 12 C + ions, enabling research on astrophysically relevant nuclear reactions with unprecedented sensitivity.
Replikationen, Reputation und gute wissenschaftliche Praxis
2017
Information, Wissenschaft und Praxis
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Einer der Autoren des vorliegenden Beitrags ist an dieser Initiative beteiligt.Benedikt Fecher, Mathis Fräßdorf, Marcel Hebing und Gert G. Wagner, Replikationen und Reputation ...
gerade einmal 0,1 Prozent aller wissenschaftlichen Artikel aus den Top-50 der wirtschaftswissenschaftlichen Zeitschriften Replikationsstudien im engeren Sinne sind (Mueller-Langer, Fecher, Harhoff & Wagner ...
doi:10.1515/iwp-2017-0025
fatcat:xfzauiezhbfjxck7rvsaqlisca
Geometric Crossing-Minimization - A Scalable Randomized Approach
2019
European Symposium on Algorithms
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We consider the minimization of edge-crossings in geometric drawings of graphs G = (V, E), i.e., in drawings where each edge is depicted as a line segment. The respective decision problem is N P-hard [5] . Crossing-minimization, in general, is a popular theoretical research topic; see Vrt'o [26]. In contrast to theory and the topological setting, the geometric setting did not receive a lot of attention in practice. Prior work [21] is limited to the crossing-minimization in geometric graphs with
doi:10.4230/lipics.esa.2019.76
dblp:conf/esa/RadermacherR19
fatcat:t4ftxlolibaglfi6ehoggfvgy4
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... less than 200 edges. The described heuristics base on the primitive operation of moving a single vertex v to its crossing-minimal position, i.e., the position in R 2 that minimizes the number of crossings on edges incident to v. In this paper, we introduce a technique to speed-up the computation by a factor of 20. This is necessary but not sufficient to cope with graphs with a few thousand edges. In order to handle larger graphs, we drop the condition that each vertex v has to be moved to its crossing-minimal position and compute a position that is only optimal with respect to a small random subset of the edges. In our theoretical contribution, we consider drawings that contain for each edge uv ∈ E and each position p ∈ R 2 for v o(|E|) crossings. In this case, we prove that with a random subset of the edges of size Θ(k log k) the co-crossing number of a degree-k vertex v, i.e., the number of edge pairs uv ∈ E, e ∈ E that do not cross, can be approximated by an arbitrary but fixed factor δ with high probability. In our experimental evaluation, we show that the randomized approach reduces the number of crossings in graphs with up to 13 000 edges considerably. The evaluation suggests that depending on the degree-distribution different strategies result in the fewest number of crossings.
Decomposing the hypercube Qn into n isomorphic edge-disjoint trees
2012
Discrete Mathematics
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We show that the edge set of the n-dimensional hypercube Q n is the disjoint union of the edge sets of n isomorphic trees.
doi:10.1016/j.disc.2012.01.033
fatcat:db55iphyxbfr7jbyi6mtvricym
Long-term monitoring data from a naturally ventilated office building
2019
Scientific Data
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*email: marcel. schweiker@kit.edu DaTa DEScripTor opEN www.nature.com/scientificdata www.nature.com/scientificdata/ occupants can also control the exterior Venetian blinds and the artificial lighting of ...
doi:10.1038/s41597-019-0283-3
pmid:31772207
pmcid:PMC6879735
fatcat:vkm53spfzfaunnofl3sjegg524
Waste Reduction by Product-Quality Based Scheduling in Food Processing
2016
Procedia CIRP
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Related to resource efficiency waste reduction is the crucial point in the processing of food. As shown in different Food Waste Studies the amount of waste in food processing is enormous. Up to 400.000 metric tons of edible food is disposed every year caused by wrong treatment, handling and processing. Processing is the major point to deal with. In the case of manual processing in a cantina kitchen waste can be classified into waste associated with overproduction, product damages or technical
doi:10.1016/j.procir.2016.01.138
fatcat:77ex4irgcjg5foda7jtgql3aq4
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... terruptions. To reduce the amount of loss by using technical solutions it is possible to reduce up to 60 % of loss during the processing. Related to the product itself the automation and especially the scheduling of the processes in a commercial kitchen is more complex than the scheduling of standard products e.g. in the automotive sector. This article shows a solution to extend the criteria of production planning within an automated food processing environment. The paper introduces a product model that prescribes the progress of product quality while processing.
The Role of Temporal Trends in Growing Networks
2016
PLoS ONE
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The rich get richer principle, manifested by the Preferential attachment (PA) mechanism, is widely considered one of the major factors in the growth of real-world networks. PA stipulates that popular nodes are bound to be more attractive than less popular nodes; for example, highly cited papers are more likely to garner further citations. However, it overlooks the transient nature of popularity, which is often governed by trends. Here, we show that in a wide range of real-world networks the
doi:10.1371/journal.pone.0156505
pmid:27486847
pmcid:PMC4972377
fatcat:a2ujiiprh5brzpyb5karwgdreu
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... nt popularity of a node, i.e., the extent by which it accumulated links recently, significantly influences its attractiveness and ability to accumulate further links. We proceed to model this observation with a natural extension to PA, named Trending Preferential Attachment (TPA), in which edges become less influential as they age. TPA quantitatively parametrizes a fundamental network property, namely the network's tendency to trends. Through TPA, we find that real-world networks tend to be moderately to highly trendy. Networks are characterized by different susceptibilities to trends, which determine their structure to a large extent. Trendy networks display complex structural traits, such as modular community structure and degree-assortativity, occurring regularly in real-world networks. In summary, this work addresses an inherent trait of complex networks, which greatly affects their growth and structure, and develops a unified model to address its interaction with preferential attachment.
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