Relevant bibliographies by topics / Reprise de rigidité

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Reprise de rigidité'

Author: Grafiati
Published: 4 June 2021
Last updated: 7 February 2022

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Journal articles on the topic "Reprise de rigidité"

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Boyer, Robert. "La crise de la macroéconomie, une conséquence de la méconnaissance des institutions?" L'Actualité économique 68, no. 1-2 (March 10, 2009): 43–68. http://dx.doi.org/10.7202/602059ar.

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RÉSUMÉ Aucune des multiples théories macroéconomiques récemment élaborées ne parvient à expliquer la totalité des faits stylisés dont les deux dernières décennies ont été riches : accélération, rupture puis légère reprise de l’inflation, ralentissement de la croissance, paradoxe de la productivité, rigidité du salaire, persistance du chômage en Europe, polarisation des excédents et déficits extérieurs, coexistence de trajectoires nationales contrastées. Le caractère tout à fait partiel des explications ainsi fournies — que dissimulent parfois la sophistication des recherches économétriques — se double d’hypothèses souvent discutables concernant la nature du contexte institutionnel, caractéristique des économies réellement existantes. Même si la théorie des institutions économiques est aujourd’hui un domaine particulièrement actif, elle n’a pas encore suffisamment pénétré les recherches macroéconomiques. Le présent article suggère que nombre des faiblesses actuelles pourraient être surmontées par une plus grande attention accordée aux régularités macroéconomiques qu’induisent les institutions et formes d’organisation.
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Samb, Ndongo, Georges El-Saikaly, and Omar Chaallal. "Effet de la rigidité, du taux du polymère renforcé de fibres (PRF) et de l’armature transversale interne sur la contribution à la résistance à l’effort tranchant d’un renfort en PRF collé en surface : état de l’art et besoins en recherche." Canadian Journal of Civil Engineering 47, no. 11 (November 2020): 1276–96. http://dx.doi.org/10.1139/cjce-2019-0409.

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Le présent article traite du renforcement en cisaillement des poutres en béton armé (BA) à l’aide de matériaux composites à base de polymère renforcé de fibres (PRF) collé en surface. La première partie de l’article fait le point sur l’évolution des codes et des normes nord-américains quant à la résistance à l’effort tranchant des poutres en BA renforcées à l’aide de composite en PRF collé en surface. La seconde partie présente une analyse exhaustive des paramètres majeurs influençant la contribution du PRF à la résistance à l’effort tranchant. Elle présente également une comparaison des prédictions des normes de conception en vigueur (ACI 440.2R 2017; CSA/S6 2019; CSA/S806 2012; fib-TG9.3 2001) avec les résultats des essais expérimentaux rapportés dans la littérature. Il ressort de l’étude que des paramètres majeurs influençant le comportement à l’effort tranchant n’ont fait l’objet, à ce jour, que de peu d’investigations. Parmi ces paramètres, on peut citer en particulier : (i) la présence et le taux de l’acier transversal interne et (ii) le nombre de plis (couches) des PRF collés en surface. Cela peut expliquer les écarts observés entre les résistances prédites par les règles de calcul et celles obtenues à partir de tests. À la suite de ces observations, une base de données extraite à partir des études expérimentales a été élaborée dans le cadre de cette étude. Les résultats obtenus mettent en évidence et confirment l’existence d’une interaction entre le composite en PRF collé en surface et l’acier transversal interne quant à la reprise des efforts tranchants. Ils mettent également en évidence l’existence d’une rigidité optimale du PRF au-delà de laquelle le gain en résistance attribué au PRF collé en surface est plafonné.
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Demaine, Erik D., Martin L. Demaine, Jin-ichi Itoh, Anna Lubiw, Chie Nara, and Joseph OʼRourke. "Reprint of: Refold rigidity of convex polyhedra." Computational Geometry 47, no. 3 (April 2014): 507–17. http://dx.doi.org/10.1016/j.comgeo.2013.11.001.

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Ivanovska, Irena L., Joe Swift, Kyle Spinler, Dave Dingal, Sangkyun Cho, and Dennis E. Discher. "Cross-linked matrix rigidity and soluble retinoids synergize in nuclear lamina regulation of stem cell differentiation." Molecular Biology of the Cell 28, no. 14 (July 7, 2017): 2010–22. http://dx.doi.org/10.1091/mbc.e17-01-0010.

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Synergistic cues from extracellular matrix and soluble factors are often obscure in differentiation. Here the rigidity of cross-linked collagen synergizes with retinoids in the osteogenesis of human marrow mesenchymal stem cells (MSCs). Collagen nanofilms serve as a model matrix that MSCs can easily deform unless the film is enzymatically cross-linked, which promotes the spreading of cells and the stiffening of nuclei as both actomyosin assembly and nucleoskeletal lamin-A increase. Expression of lamin-A is known to be controlled by retinoic acid receptor (RAR) transcription factors, but soft matrix prevents any response to any retinoids. Rigid matrix is needed to induce rapid nuclear accumulation of the RARG isoform and for RARG-specific antagonist to increase or maintain expression of lamin-A as well as for RARG-agonist to repress expression. A progerin allele of lamin-A is regulated in the same manner in iPSC-derived MSCs. Rigid matrices are further required for eventual expression of osteogenic markers, and RARG-antagonist strongly drives lamin-A–dependent osteogenesis on rigid substrates, with pretreated xenografts calcifying in vivo to a similar extent as native bone. Proteomics-detected targets of mechanosensitive lamin-A and retinoids underscore the convergent synergy of insoluble and soluble cues in differentiation.
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Hill, Brennan R. "Bernard Häring and the Second Vatican Council." Horizons 33, no. 01 (2006): 78–100. http://dx.doi.org/10.1017/s0360966900002966.

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ABSTRACTThis article examines the life and work of Bernard Häring, C.SS.R., especially his valuable contributions to the Second Vatican Council and his dedication to the council's vision of renewal. It begins with an overview of Häring's preconciliar religious and theological formation in his family, seminary and university, during World War II, and during his teaching in Rome. The next section deals with Häring's work at the council, especially his efforts on the original Theological Commission to resist the rigidity of the first drafts, and his contributions toLumen Gentium(“The Constitution on the Church”),Unitatis Redintegratio(“The Decree on Ecumenism”),Dignitatis Humana(“The Declaration on Religious Freedom”),Gaudium et Spes(“The Constitution on the Church and the Modern World”),and Optatam Totius(“Decree on Priestly Formation”). The final section considers Häring's mission to spread the council's message of renewal to the world, his conflicts with the forces attempting to repress the progressive agenda, and his courageous visioning of what a renewed church might look like in the future.
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Lanzi, G., CA Zambrino, O. Ferrari-Ginevra, C. Termine, S. D'Arrigo, P. Vercelli, A. De Silvestri, and CR Guglielmino. "Personality Traits in Childhood and Adolescent Headache." Cephalalgia 21, no. 1 (February 2001): 53–60. http://dx.doi.org/10.1046/j.1468-2982.2001.00144.x.

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We evaluate personality traits, anxiety and depression in a population of paediatric and adolescent patients, correlating personality characteristics with headache and sociodemographic variables. The clinical features of headache include specific personality traits. We report a clinical study of 57 patients (age 8–18 years), divided up as follows: 12 migraine with aura, 29 migraine without aura and 16 tension-type headache. One of Cattel's tests was administered to every patient; the Children's Depression Inventory test was administered to 53 patients and the Test Anxiety Inventory test to 43 subjects. The scores obtained by every patient in each test were correlated with the characteristics of headache and with sociodemographic data. We found that patients affected by idiopathic headache share some personality traits, mainly emotional rigidity and tendency to repress anger and aggression. These traits do not seem to be correlated with sociodemographic data and the duration of headache: we considered these as characteristic of migrainous patients.
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Bachmann, Tom. "Motivic and real étale stable homotopy theory." Compositio Mathematica 154, no. 5 (March 20, 2018): 883–917. http://dx.doi.org/10.1112/s0010437x17007710.

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Let$S$be a Noetherian scheme of finite dimension and denote by$\unicode[STIX]{x1D70C}\in [\unicode[STIX]{x1D7D9},\mathbb{G}_{m}]_{\mathbf{SH}(S)}$the (additive inverse of the) morphism corresponding to$-1\in {\mathcal{O}}^{\times }(S)$. Here$\mathbf{SH}(S)$denotes the motivic stable homotopy category. We show that the category obtained by inverting$\unicode[STIX]{x1D70C}$in$\mathbf{SH}(S)$is canonically equivalent to the (simplicial) local stable homotopy category of the site$S_{\text{r}\acute{\text{e}}\text{t}}$, by which we mean thesmallreal étale site of$S$, comprised of étale schemes over$S$with the real étale topology. One immediate application is that$\mathbf{SH}(\mathbb{R})[\unicode[STIX]{x1D70C}^{-1}]$is equivalent to the classical stable homotopy category. In particular this computes all the stable homotopy sheaves of the$\unicode[STIX]{x1D70C}$-local sphere (over$\mathbb{R}$). As further applications we show that$D_{\mathbb{A}^{1}}(k,\mathbb{Z}[1/2])^{-}\simeq \mathbf{DM}_{W}(k)[1/2]$(improving a result of Ananyevskiy–Levine–Panin), reprove Röndigs’ result that$\text{}\underline{\unicode[STIX]{x1D70B}}_{i}(\unicode[STIX]{x1D7D9}[1/\unicode[STIX]{x1D702},1/2])=0$for$i=1,2$and establish some new rigidity results.
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Dissertations / Theses on the topic "Reprise de rigidité"

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Alahmad, Sam. "Traitement des fissurations dans les ouvrages hydrauliques." Toulouse, INSA, 2009. http://eprint.insa-toulouse.fr/archive/00000310/.

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Les fissures de différentes origines, dans les ouvrages hydrauliques, offrent des chemins préférentiels pour la pénétration de différents agents agressifs (liquide, gaz, ions), ce qui conduit à la diminution de la performance de ces ouvrages (fuite, dégradation, perte de résistance mécaniques). L’objectif de la thèse est d’étudier des conséquences de la fissuration des ouvrages hydrauliques sur leurs propriétés d’étanchéité et mécanique et les possibilités de traitement de cette fissuration pour améliorer et retrouver une étanchéité suffisante, ainsi que la recouvrance partielle d’une cohésion mécanique. Deux aspects seront donc étudiés. Le premier aspect est d’étudier l’effet d’ouverture de fissuration sur la pénétration du dioxyde de carbone dans un mortier. Le deuxième aspect est d’étudier des capacités de cicatrisation des fissures d’un point de vue mécanique (reprise de rigidité, capacité portante). Cette étude sera complétée par des analyses chimiques et des observations microscopiques pour qualifier la nature des nouveaux cristaux ayant précipités dans la fissure
The cracks of different origins in hydraulic structures provide preferential paths for the penetration of various aggressive agents (such as liquid, gas, ions), which leads to decreased performance of these works (leakage, deterioration, loss of mechanical strength). The aim of the thesis is to study the consequences of cracking of hydraulic structures on mechanical and water sealing properties, and to study different possibilities to treat these cracks to improve and regain sufficient sealing. Moreover, recover partially the mechanical cohesion. Therefore, two aspects will be studied. The first aspect is to study the effect of crack opening on the penetration of carbon dioxide in a mortar. The second aspect is to study the capacity of healing of cracks from the point of view of mechanical (stiffness, bearing capacity), this study will be supplemented by chemical analysis and microscopic observations to characterize the nature of new crystals that precipitated in the crack
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Book chapters on the topic "Reprise de rigidité"

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Walcott, R. I. "Flexural Rigidity, Thickness, and Viscosity of the Lithosphere." In Collected Reprint Series, 3941–54. Washington, DC: American Geophysical Union, 2014. http://dx.doi.org/10.1002/9781118782149.ch16.

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Conference papers on the topic "Reprise de rigidité"

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Abrahão, Felipe, Klaus Wehmuth, and Artur Ziviani. "Transtemporal edges and crosslayer edges in incompressible high-order networks." In IV Encontro de Teoria da Computação. Sociedade Brasileira de Computação - SBC, 2019. http://dx.doi.org/10.5753/etc.2019.6389.

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This work presents some outcomes of a theoretical investigation of incompressible high-order networks defined by a generalized graph represen tation. We study some of their network topological properties and how these may be related to real world complex networks. We show that these networks have very short diameter, high k-connectivity, degrees of the order of half of the network size within a strong-asymptotically dominated standard deviation, and rigidity with respect to automorphisms. In addition, we demonstrate that incompressible dynamic (or dynamic multilayered) networks have transtemporal (or crosslayer) edges and, thus, a snapshot-like representation of dynamic networks is inaccurate for capturing the presence of such edges that compose underlying structures of some real-world networks.
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