Search results for "63"
showing 10 items of 724 documents
On relation between J-integral and heat energy dissipation at the crack tip in stainless steel specimens
2019
In this paper, an experimental procedure to evaluate the elastic-plastic J-integral at the tip of a fatigue crack is presented. According to this new approach, the elastic component of the J-integral is derived from Thermoelastic Stress Analysis, while the plastic component of the J-integral is derived from the heat energy loss. An analytical link is proposed to apply this new experimental technique. Therefore, the elastic-plastic J-integral range was evaluated starting from infrared temperature maps measured in situ during crack propagation tests of AISI 304L stainless steel specimens. It was found that the range of the infrared thermography-based J-integral correlated well the crack growt…
Dynamique de la structure industrielle française
1990
A Note on added information in the RAS Procedure: reexamination of some evidence
2006
International audience; An example in Miernyk (1977) presented a rather counterintuitive result, namely that introducing accurate exogenous information into an RAS matrix estimating procedure could lead to an estimate that was worse than one generated by RAS using no exogenous information at all. This became an oft-cited black mark against RAS. Miller and Blair (1985) included a different (and small) illustration of the same possibility. It was recently pointed out by one of us that the Miller/Blair numerical results are wrong. For that reason, we decided to reexamine all the empirical evidence we could find on the subject. While figures in both Miernyk and Miller/Blair appear to be wrong, …
Normalizing biproportional methods
2002
International audience; Biproportional methods are used to update matrices: the projection of a matrix Z to give it the column and row sums of another matrix is R Z S, where R and S are diagonal and secure the constraints of the problem (R and S have no signification at all because they are not identified). However, normalizing R or S generates important mathematical difficulties: it amounts to put constraints on Lagrange multipliers, non negativity (and so the existence of the solution) is not guaranteed at equilibrium or along the path to equilibrium.
Le paradoxe du seuil de pauvreté endogène dans les indices de pauvreté
2007
Justice et inégalités: un amendement à la théorie de John Rawls
1992
National audience; On se demande si les principes de justice de Rawls ne sont pas exagérément inégalitaires, malgré leur côté "juste". On examine donc ce qu'il advient de l'optimum de Rawls, le maximin, quand de l'aversion pour l'inégalité" apparaît. Le maximin consiste à se placer sur un certain point de la courbe d'efficience, en admettant une certaine dose d'inégalité, pourvu que l'on donne le maximum possible aux plus défavorisés. On tient compte d'externalités en reprenant la notion d'envie sous la forme d'une aversion pour l'inégalité, essentiellement de la part des plus défavorisés. On ne peut plus raisonner sur la courbe frontière des rémunérations possibles et on démontre la validi…
La capilla de la Virgen de Campanar en Valencia: tradición popular erigida en erudita retórica visual
2018
This chapel forms part of the parochial church of Campanar, which belongs to the municipality of Valencia. The Virgen de Campanar (Virgin of Campanar) is an image executed in alabaster, discovered on the subfloor of the church of this place on February 19th, 1596, by some construction workers who were undertaking some remodeling at that time. From that moment forward it began to be worshipped by the masses as a miraculous image. Among its alleged properties we find the mysterious fact that powder from its plaster had miraculous effects: it was taken dissolved in water to cure the sick or to assure a healthy birth for pregnant women, and it even calmed storms at sea if it was thrown into the…
De Christo iudice laetis animis expectando oratio... Seraphini Caballi... Dominicani... in Dominica prima Aduentus 1562 ad sacrum Decumenicum Trident…
1563
Sign.: A-B4 Postil·les marginals
De nomine Iesu, oratio Ad sacro Sanctam Synodum Tridentinam / autore Gasparo Cardillo Villalpandeo
1563
Sign.: A-B4
De Christo puero, circunciso, et Iesu vocato, concio, Tridenti habita, Calendis Ianuarii, in... Sanctae Synodi, Cardinalium, patrum atq. oratorum Con…
1563
Sign.: A6 Autor pres de l'epígraf Postil·les marginals