8,104 research outputs found
Total choosability of planar graphs with maximum degree 4
No full textAbstractLet G be a planar graph with maximum degree 4. It is known that G is 8-totally choosable. It has been recently proved that if G has girth g⩾6, then G is 5-totally choosable. In this note we improve the first result by showing that G is 7-totally choosable and complete the latter one by showing that G is 6-totally choosable if G has girth at least 5
À propos de l’interaction homme-machine
No full textNational audienceLe clavier et la souris ont encore de l’avenir ! Tel est l’avis de Nicolas Roussel, chercheur en interaction homme-machine. Il l’explique dans cet épisode du podcast audio
Printable Cement-Based Materials: Fresh Properties Measurements and Control
No full textDigital fabrication with cementitious materials is a rapidly growing field of research in which the evolution of strength during the various processes, such as 3D printing, is the key controlling parameter. The strength evolves over multiple orders of magnitude during the process, and thus, it is essential to properly characterize the strength evolution in order to guarantee process success. This chapter summarizes the state of the art in these characterization methods for digital fabrication with fresh cementitious materials, reviewing well-known and more recently developed methods.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Concrete Structure
Digital Fabrication with Cement-Based Materials: Process Classification and Case Studies
No full textThe need for methods for forming concrete has existed for as long as concrete has been used in constructing the built environment. Creating flat, rectilinear formers have traditionally been the cost and time efficient default for the majority of applications. The desire for greater design freedom and the drive to automate construction manufacturing is providing a platform for the continued development of a family of processes called Digital Fabrication with Concrete (DFC) technologies. DFC technologies are many and varied. Much of the material science theory is common, but the process steps vary significantly between methods, creating challenges as we look towards performance comparison and standardisation. Presented here is a framework to help identify and describe process differences and a showcase of DFC application case studies that explain the processes behind a sub-set of the technologies available.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Applied Mechanic
Nicolas Diaz
No full textSeries 328 | Board of Pardons | Prisoners' pardon application case files | Nicolas DiazCase files consist of letters to the Governor, a formal application for a pardon, petitions and letters of support from the public and officials connected to the case. Cases illustrate the process of review by the board of cases of prisoners incarcerated in the Utah prison system to determine if they should be released before their regular sentence ended
On Roussel-Rubio-type lemmas and their consequences
No full textRoussel and Rubio proved a lemma which is essential in the proof of the Strong Perfect Graph Theorem. We give a new short proof of the main case of this lemma. In this note, we also give a short proof of Hayward’s decomposition theorem for weakly chordal graphs, relying on a Roussel–Rubio-type lemma. We recall how Roussel–Rubio-type lemmas yield very short proofs of the existence of even pairs in weakly chordal graphs and Meyniel graphs
La regio Bastitania et le début de sa romanisation
No full textMarin Diaz Nicolas, Perez Cruz Maria Angeles, Clavel-Lévêque Monique. La regio Bastitania et le début de sa romanisation . In: Dialogues d'histoire ancienne, vol. 22, n°2, 1996. pp. 251-256
- …
