Relevant bibliographies by topics / Structures en boucle R

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Academic literature on the topic 'Structures en boucle R'

Author: Grafiati
Published: 12 April 2025

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Journal articles on the topic "Structures en boucle R"

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Zheng, Hong, Bi-Xia Wang, D. Phelan, Junjie Zhang, Yang Ren, M. J. Krogstad, S. Rosenkranz, R. Osborn, and J. F. Mitchell. "Oxygen Inhomogeneity and Reversibility in Single Crystal LaNiO3−δ." Crystals 10, no. 7 (June 30, 2020): 557. http://dx.doi.org/10.3390/cryst10070557.

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LaNiO3−δ single crystals have been obtained via high pressure floating zone growth under 149 bar of oxygen pressure. We find a radial gradient in the magnetic properties of specimens extracted from the as-grown boule, which we correlate with the appearance of ordered oxygen vacancy structures. This radial oxygen inhomogeneity has been characterized systematically using a combination of magnetization and X-ray scattering measurements. We establish the presence of rhombohedral ( R 3 ¯ c ), oxygen stoichiometric specimens at the periphery of the boule and the presence of a dilute concentration of ordered oxygen-deficient orthorhombic La2Ni2O5 in the center. Furthermore, we demonstrate that the as-grown, oxygen-deficient central regions of the crystal can be annealed under high oxygen pressure, without loss of crystallinity, into fully oxygenated LaNiO3, recovering magnetic properties that are characteristic of stoichiometric specimens from the exterior region of the crystal. Thus, single crystals of LaNiO3−δ possess oxygen content that can be reversibly modified under oxidizing and reducing conditions.
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Bhagavannarayana, G., A. Choubey, Yu V. Shubin, and Krishan Lal. "Study of point defects in as-grown and annealed bismuth germanate single crystals." Journal of Applied Crystallography 38, no. 3 (May 13, 2005): 448–54. http://dx.doi.org/10.1107/s002188980500590x.

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Point defects and their clusters in bismuth germanate single crystals free from grain boundaries and having low density of dislocations were studied by high-resolution diffuse X-ray scattering measurements. Differences in defects in the colourless crystals (type A) and the crystals having yellow tinge (type B), which were grown with different raw materials, were investigated. In addition, interesting differences in defect structures in specimens from different regions of the same boule were investigated. Specimens with diffracting surfaces along (111), (112) and (100) planes were studied. A multicrystal X-ray diffractometer employing a well collimated and highly monochromated Mo Kα1 beam and set in (+,−,−,+) configuration was employed. The diffraction curves of all the samples were quite narrow with half-widths in the range 7–11 arcsec, which are close to the theoretically expected values, if instrumental broadenings are taken into account. The observed distribution of diffuse X-ray scattering (DXS) intensity showed that not all the point defects are isolated but a significant fraction are agglomerated into clusters. Experimental data of DXS intensity were analysed by using a phenomenological model for a small concentration of dislocation loops wherein the point defects are loosely clustered with weak interactions among them. From this analysis, the cluster radius R cl, cluster volume A cl, the number of point defects within a cluster N cl and the relative concentration of the point-defect clusters among the samples were estimated. It was observed that cluster sizes do not vary from sample to sample. However, it was found that the concentration of clusters is approximately twice in the coloured sample compared with that of the colourless sample from the same boule. Annealing of the crystals at 1273 K produced an increase in point-defect clusters by a factor of ∼200. It was accompanied by a reduction in volume of clusters by a factor of ∼0.14.
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CASEAU, P. "De la boucle ouverte O pression-ttat-r�ponse �... � la boucle compl�te O nature-soci�t� �." Nature Sciences Soci�t�s 10 (April 2002): 80–84. http://dx.doi.org/10.1016/s1240-1307(02)80137-6.

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Smith-Harvey, James, and Claudio Aguayo. "Modes of Meaning." Pacific Journal of Technology Enhanced Learning 6, no. 1 (April 15, 2024): 10–11. http://dx.doi.org/10.24135/pjtel.v6i1.181.

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This presentation proposes an approach to designing technology-enhanced learning (TEL) through the strategic integration of diverse multimodal media forms within a framework informed by the 4E+ view of cognition. The 4E+ cognition framework emphasises the embodied, embedded, enactive, and extended nature of cognition, suggesting that cognition is not solely confined to the brain but extends into the environment while involving the body's interactions with that environment (Carney, 2020; Jianhui , 2019; Menary, 2010; Newen, et al., 2018). In this theoretical context, our study explores how the combination of various modes of media, such as immersive technologies, digital interactive elements, real-world analogue creations, audio, sound, images, videos, animations, text, and the surrounding environment can be orchestrated to create sensorially rich, and more meaningful learning experiences (Gilakjani, et al., 2011; Philippe, et al., 2020; Sankey, et al., 2010). For example, mixed reality (XR) learning design combines immersive media forms to support multi-sensory and expanded cognitive learning (Philippe et al., 2020; Rakkolainen et al., 2021; Villalobos & Videla, 2023). Other relevant approaches include gamification and transmedia storytelling methods (Doumanis et al., 2019; Perry, 2020). By leveraging different modalities, educators can design learning materials that engage learners with different sensory activations and presentation methods (Bouchey et al., 2021). This approach can cater to the 4E+ view of cognition, and subsequently enhancing knowledge acquisition and retention. Examples from our own practice and research (such as the Explora: Chile es Mar, Pipi’s World and O-Tū-Kapua XR learning experiences), as well as current educational examples (Bouchey et al., 2021; Philippe, et al., 2020), demonstrate how multimodal media integration facilitates deeper engagement, critical thinking, and a more holistic understanding of complex concepts. Furthermore, we discuss practical strategies for educators to implement these principles in their TEL design, highlighting the potential of aligning multimodal design choices with the 4E+ cognitive framework. Ultimately, we advocate for a shift towards a more inclusive and effective approach to technology-enhanced learning - one that embraces the diversity of human cognitive processes and leverages multimodal media to communicate meaningful knowledge in ways that resonate with learners' cognitive structures and experiences. Multimodal methods, when aligned with the distributed 4E+ view of cognition, can make TEL appeal and resonate on deeper levels to engage across various sensory, environmental and communication modes. This type of approach acknowledges the diversity of ways that humans process and understand phenomena, and how more effective learning can occur when multiple ways of knowing are engaged and communicated to. Furthermore, through this method, inclusivity can be heightened for students with diverse cultural, neurological or other backgrounds (Anis & Khan, 2023; Boivin & CohenMiller, 2022). Emerging research shows the potential of the 4E+ approach to meet the needs of learning in 21st century technological environments (Videla & Veloz, 2023; Villalobos & Videla, 2023). This presentation contributes to the literature by examining TEL design through a multimodal media lens. It highlights how the holistic 4E+ framework can more effectively and meaningfully engage students than computational, monomodal and bimodal uses of technology in educational settings. References Anis, M., & Khan, R. (2023). Integrating Multimodal Approaches in English Language Teaching for Inclusive Education: A Pedagogical Exploration. Boivin, A. C. N., & CohenMiller, A. (2022). INCLUSION AND EQUITY WITH MULTIMODALITY DURING COVID-19. Keep Calm, Teach On: Education Responding to a Pandemic, 87. Bouchey, B., Castek, J., & Thygeson, J. (2021). Multimodal learning. Innovative Learning Environments in STEM Higher Education: Opportunities, Challenges, and Looking Forward, 35-54. Carney, J. (2020). Thinking avant la lettre: A Review of 4E Cognition. Evolutionary studies in imaginative culture, 4(1), 77-90. Doumanis, I., Economou, D., Sim, G. R., & Porter, S. (2019). The impact of multimodal collaborative virtual environments on learning: A gamified online debate. Computers & Education, 130, 121-138. Gilakjani, A. P., Ismail, H. N., & Ahmadi, S. M. (2011). The effect of multimodal learning models on language teaching and learning. Theory & Practice in Language Studies, 1(10). Jianhui, L. (2019). Transcranial Theory of Mind: A New Revolution of Cognitive Science. International Journal of Philosophy, 7(2), 66-71. Menary, R. (2010). Introduction to the special issue on 4E cognition. Phenomenology and the Cognitive Sciences, 9, 459-463. Newen, A., De Bruin, L., & Gallagher, S. (Eds.). (2018). The Oxford handbook of 4E cognition. Oxford University Press. Perry, M. S. (2020). Multimodal Engagement through a Transmedia Storytelling Project for Undergraduate Students. Gema Online Journal of Language Studies, 20(3). Philippe, S., Souchet, A. D., Lameras, P., Petridis, P., Caporal, J., Coldeboeuf, G., & Duzan, H. (2020). Multimodal teaching, learning and training in virtual reality: a review and case study. Virtual Reality & Intelligent Hardware, 2(5), 421-442. Rakkolainen, I., Farooq, A., Kangas, J., Hakulinen, J., Rantala, J., Turunen, M., & Raisamo, R. (2021). Technologies for multimodal interaction in extended reality—a scoping review. Multimodal Technologies and Interaction, 5(12), 81. Sankey, M., Birch, D., & Gardiner, M. W. (2010). Engaging students through multimodal learning environments: The journey continues. Proceedings of the 27th Australasian Society for Computers in Learning in Tertiary Education, 852-863. Videla, R., & Veloz, T. (2023). The 4E approach applied to education in the 21st century. Constructivist Foundations, 18(2), 153-157. Villalobos, M., & Videla, R. (2023). The roots and blossoms of 4E cognition in Chile: Introduction to the Special Issue on 4E cognition in Chile. Adaptive Behavior, 31(5), 397-404.
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Berthelemy, Mélissa, Alexandra Vidal-Bernard, Frédérique Poirot, Évelyne Letoublon, and André Mariage. "L’agir sexuel chez l’enfant comme activation du mécanisme de la destructivité par emboîtement." Revue de psychothérapie psychanalytique de groupe 81, no. 2 (September 5, 2023): 115–26. http://dx.doi.org/10.3917/rppg.081.0115.

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Nous présentons un modèle de compréhension de la clinique de l’agir sexuel de l’enfant par l’activation d’un mécanisme de la destructivité par emboîtement. À travers la présentation et l’analyse d’une étude de cas, nous constaterons que les agirs sexuels sont aussi révélateurs du fonctionnement familial et institutionnel. Nous aborderons les effets de cette révélation sur les groupes concernés, notamment la capacité disruptive, voire destructive, qu’elle revêt. Prenant racine au sein d’un environnement fragilisé par une histoire traumatique, voire transgénérationnelle, nous découvrirons que les agirs sexuels peuvent entraîner une « boucle groupale interactive d’agirs » face au décontenancement dans l’attente d’une régulation.
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Kim, Jong-Su. "R-CRITICAL WEYL STRUCTURES." Journal of the Korean Mathematical Society 39, no. 2 (March 1, 2002): 193–203. http://dx.doi.org/10.4134/jkms.2002.39.2.193.

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Figuières, Charles, Philippe Gardères, and Frédéric Rychen. "Infrastructures publiques et politiques de développement décentralisées." Articles 78, no. 4 (January 19, 2005): 539–70. http://dx.doi.org/10.7202/007264ar.

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Résumé Cet article apporte une contribution théorique au débat sur le sous-investissement en capitaux publics. Il utilise pour cela un jeu différentiel d’accumulation de capitaux entre deux collectivités. Dans ce jeu l’équilibre de Nash en boucle ouverte et la solution centralisée du jeu convergent à long terme vers un régime stationnaire. Dans le long terme nous étudions la nature de l’inefficacité de l’équilibre de Nash en prenant comme référence la solution centralisée utilitariste. Lorsque les stocks d’infrastructures sont des compléments stratégiques, les collectivités surinvestissent (sous-investissent) en présence d’externalités négatives (positives). Lorsque les stocks d’infrastructures sont des substituts stratégiques, les mêmes résultats restent vrais si les collectivités sont similaires. En revanche, nous montrons dans un exemple que lorsque les collectivités ont des structures de coûts assez différentes, la collectivité qui a le coût le plus faible sous-investit tandis que la collectivité qui a le coût le plus fort surinvestit. Nous discutons ensuite brièvement les implications de ces résultats en termes de politiques économiques.
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Potekaev, A. I., and B. B. Khaimzon. "R-Phase and Precursory Structures." Journal of Engineering Materials and Technology 121, no. 1 (January 1, 1999): 61–66. http://dx.doi.org/10.1115/1.2816001.

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An analysis of plausible crystal structures of R-phase and precursory structures in Ti-Ni based on solely kinematical data on presence and equivalence of extra-reflections of diffraction patterns, as well as further data on symmetry of structure was carried out. A character of possible ordering and displacements, required to form these phases from parent BCC lattice, was determined. A classification of possible structures was given.
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Lubarsky, Robert S. "Simple r. e. degree structures." Journal of Symbolic Logic 52, no. 1 (March 1987): 208–13. http://dx.doi.org/10.2307/2273875.

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Much of recursion theory centers on the structures of different kinds of degrees. Classically there are the Turing degrees and r. e. Turing degrees. More recently, people have studied α-degrees for α an ordinal, and degrees over E-closed sets and admissible sets. In most contexts, deg(0) is the bottom degree and there is a jump operator' such that d' is the largest degree r. e. in d and d' > d. Both the degrees and the r. e. degrees usually have a rich structure, including a relativization to the cone above a given degree.A natural exception to this pattern was discovered by S. Friedman [F], who showed that for certain admissible ordinals β the β-degrees ≥ 0′ are well-ordered, with successor provided by the jump.For r. e. degrees, natural counterexamples are harder to come by. This is because the constructions are priority arguments, which require only mild restrictions on the ground model. For instance, if an admissible set has a well-behaved pair of recursive well-orderings then the priority construction of an intermediate r. e. degree (i.e., 0 < d < 0′) goes through [S]. It is of interest to see just what priority proofs need by building (necessarily pathological) admissible sets with few r. e. degrees.Harrington [C] provides an admissible set with two r. e. degrees, via forcing. A limitation of his example is that it needs ω1 (more accurately, a local version thereof) as a parameter. In this paper, we find locally countable admissible sets, some with three r. e. degrees and some with four.
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Kushner, A. G. "r-Tuple almost product structures." Journal of Mathematical Sciences 177, no. 4 (August 10, 2011): 569–78. http://dx.doi.org/10.1007/s10958-011-0482-8.

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Dissertations / Theses on the topic "Structures en boucle R"

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Mandelbrojt, Juliette. "How do transcription and chromosomal context interfere with an efficient replication origin ?" Electronic Thesis or Diss., Université Paris Cité, 2024. https://wo.app.u-paris.fr/cgi-bin/WebObjects/TheseWeb.woa/wa/show?t=7639&f=73688.

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La réplication fidèle du génome des vertébrés est un processus essentiel au maintien de son intégrité. Elle est initiée selon un programme temporel bien orchestré de déclenchement des origines de réplication. En condition de stress réplicatif, deux types de régions chromosomiques sont susceptibles de subir une instabilité génomique. Les sites fragiles de réplication précoce (ERFS) sont caractérisés par une forte densité en gènes courts fortement transcrits contenant des R-loops ainsi qu'en origines de réplication efficaces. Au contraire, les sites fragiles communs (SFC) sont localisés dans des régions tardives contenant des gènes très longs et modérément exprimés. Dans ces régions, l'instabilité est associée à un appauvrissement des événements d'initiation corrélé à la transcription. Ces observations ont conduit à une hypothèse sur la formation des SFC, selon laquelle la transcription peut activement éliminer les complexes de pré-réplication, limitant le déclenchement d'origines dans ces longs gènes. Nous avons étudié comment la transcription interfère avec l'initiation de la réplication au niveau d'un SFC et d'une région ayant certaines propriétés des ERFS dans des lignées cellulaires aviaires DT40 modifiées. Nous avons d'abord analysé l'activité d'une origine de réplication minimale et efficace insérée au milieu de la zone dépourvue d'événements d'initiation du gène de la dystrophine (DMD), couvrant 1 Mb et se répliquant tardivement. Le gène DMD, naturellement silencieux et non fragile dans la DT40, devient fragile lorsqu'il est placé sous le contrôle d'un promoteur TetOn inductible. Lorsque la transcription est induite, celle-ci progresse à travers l'origine, diminuant drastiquement son activité. Ce résultat est en accord avec le modèle proposé de formation des SFC. Nous avons ensuite analysé l'effet du passage de la transcription induite par le promoteur fort b-actine sur la même origine minimale dans une région répliquée en milieu de phase S. Nous avons observé que le passage de la machinerie de transcription n'inhibe pas son déclenchement. La transcription progresse au-delà de l'origine minimale, suggérant que les deux machineries peuvent coexister sur le même substrat. De plus, des analyses du moment de réplication ont montré que l'origine minimale coopère avec l'origine présente dans le promoteur b-actine pour avancer le moment de réplication de la région qui devient précoce. Cette configuration ressemblant aux ERFS, nous avons testé la stabilité de la région modifiée. Contrairement aux ERFS précédemment décrits dans la DT40, cette configuration n'induit pas le recrutement de g-H2AX lors d'un stress réplicatif. Ces résultats suggèrent que la transcription affecte différemment l'initiation de la réplication dans deux contextes génomiques distincts. Le contexte de réplication tardive est répressif, alors que le contexte précoce ne l'est pas. Pour approfondir cette question, nous avons testé un troisième contexte, une région de réplication tardive non génique. Des résultats antérieurs ont montré que la combinaison de l'origine complète b-globine avec l'origine b-actine avançait de manière significative le moment de réplication. Nous avons montré que l'origine minimale modèle insérée seule dans ce troisième contexte chromosomique est réprimée, alors que l'origine b-actine est active. Lorsque les deux origines modèles sont insérées à proximité, l'origine minimale devient fonctionnelle. Globalement, ce dernier contexte chromosomique se comporte différemment des deux précédents. L'origine minimale efficace ne peut fonctionner dans ce contexte très répressif que lorsqu'elle est associée à une transcription active. Ce dernier résultat confirme la forte influence de l'environnement chromosomique sur la fonction d'une origine. Ce travail contribue à une meilleure compréhension des mécanismes moléculaires qui régissent la formation des sites fragiles et l'établissement des domaines chromosomiques du moment de réplication
The faithful duplication of vertebrate genomes is essential for maintaining genome integrity. DNA replication is initiated at thousands of replication origins following a well-orchestrated temporal programme of origin firing. Under replication stress, two main types of chromosomal regions are prone to chromosomal instability. Early replicating fragile sites (ERFSs) are characterised by a high density of short and highly transcribed genes containing R-loops and efficient replication origins. In contrast, common fragile sites (CFSs) are located in late-replicating regions containing very long, moderately expressed genes. In these late regions, instability has been shown to be associated with a transcription-induced depletion of initiation events. This leads to the current main hypothesis for CFS formation, that ongoing transcription may actively remove pre-replication complexes, thereby limiting origin firing within these long genes. In this study, we investigated how transcription interferes with replication initiation at CFSs and in a context similar to ERFSs using engineered avian DT40 cell lines. First, we analysed the consequences of introducing an efficient minimal model replication origin in the centre of the region depleted of initiation events of the 1Mb long and late replicating dystrophin (DMD) gene. The DMD gene, which is naturally silent and non-fragile in DT40 cells, becomes fragile under the control of an inducible TetOn promoter. We observed a dramatic decrease in the minimal efficient origin activity after tetracycline induction. This result supports the commonly accepted model of CFS formation. Next, we analysed the effect of transcription induced by the strong b-actin promoter through the same efficient minimal origin in a mid-late replicating region. We observed that the passage of the transcriptional machinery does not inhibit origin firing in this context. Transcription proceeds beyond the minimal origin, suggesting that the two types of machinery can coexist on the same substrate. Furthermore, replication timing analyses showed that the minimal origin cooperates with the origin present in the b-actin promoter to advance the replication timing of the region. Since this configuration shares many features with ERFSs, we tested whether this organisation affects chromosome stability. Interestingly, unlike the previously described DT40 ERFS, this configuration does not induce gH2AX recruitment upon replication stress induction, suggesting that it does not cause fragility. Our results demonstrate that transcription differentially affects replication initiation in two distinct genomic contexts. The late-replicating timing context is repressive, whereas the early context is not. To investigate this further, we tested a third context, a non-genic late-replicating region. Previous results showed that the combination of the full-length b-globin origin next to the b-actin origin significantly advanced replication timing. Single-cell RT analyses revealed that this late region, which is closely associated with the nuclear lamina, is under tight control to ensure late replication. We showed that the minimal model origin alone inserted into this third chromosomal context is repressed, whereas the b-actin promoter/origin is active. Furthermore, when the two model origins are inserted in close proximity, the minimal origin becomes functional suggesting a cooperative interaction. Overall, this last chromosomal context behaves differently from the two previously studied. We found that the minimal efficient origin can only function in this very repressive context when associated with active transcription. This last result confirms the strong influence of the chromosomal environment on origin function. Overall, this work contributes to a better understanding of the molecular mechanisms that govern the formation of fragile sites and the establishment of chromosomal domains of replication timing
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Barbault, Florent. "Etude par RMN et modélisation moléculaire des structures de la séquence ARN initiant la dimérisation chez VIH-1Lai et de son analogue ADN." Phd thesis, Université d'Orléans, 2001. http://tel.archives-ouvertes.fr/tel-00009954.

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Le génome du virus de l'immunodéficience humaine (VIH) est constitué, comme tous les rétrovirus, de deux copies identiques d'ARN génomique. Celles-ci sont liées de manière non covalente au niveau de leur région 5'-terminale. Ce phénomène de dimérisation interfère avec différentes étapes clés du cycle rétroviral. C'est pourquoi, l'inhibition de la dimérisation représente une nouvelle voie de traitement potentiel du VIH. La première partie de ce travail porte sur la séquence d'ARN SL1 initiant la dimérisation chez VIH-1Lai. Nous nous sommes intéressés à la détermination structurale, par RMN et modélisation moléculaire, des espèces présentes dans le processus de dimérisation sous forme instable. Après avoir isolé les deux différents dimère d'ARN, nous avons mis en évidence la structure du dimère stable qui permet d'avancer des hypothèses quant à leur stabilité relative. La seconde partie de ce travail porte sur l'étude du fragment désoxyribose de SL1. Là encore, deux conformères de stabilité différente sont isolables. Le dimère instable s'organise sous forme de “kissing-complex” et représente la première structure de ce type élucidée pour un ADN. La structure du dimère stable demeure de type “kissing-complex” bien que présentant des différences à l'origine du changement de stabilité. La présence du groupement hydroxyle distinguant l'ADN de l'ARN explique cette différence de comportement. Ces investigations structurales constituent une solide base d'étude dans les stratégies de “drug-design” impliquant le développement d'inhibiteurs susceptibles d'interférer avec le phénomène de dimérisation.
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Pollès, Rémi. "Structures exotiques en nanophotonique, théorie et approche numérique." Phd thesis, Université Blaise Pascal - Clermont-Ferrand II, 2011. http://tel.archives-ouvertes.fr/tel-00646673.

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Dans la perspective d'un contrôle ultime de la lumière, les arrivées récentes des cristaux photoniques et des métamatériaux constituent des avancées majeures. Ces matériaux nano-structurés présentant des propriétés optiques inédites nous ouvrent tout un champ de possibilités encore inexploré. En particulier, des milieux d'indice effectif négatif sont rendus concevables. L'objectif de cette thèse est d'étudier d'un point de vue électromagnétique, à l'aide d'outils analytiques et numériques, le comportement de la lumière dans ces structures exotiques. Nous nous penchons sur les boucles de lumières, qui sont des modes localisés d'une structure multi-couches, émergeant du couplage contra-directionnel entre deux guides distincts. Une analyse physique est proposée et un modèle basé sur la théorie des modes couplés est développé. Cela nous permet de décrire avec précision l'excitation d'une boucle de lumière par une source lumineuse, et d'envisager des applications pour la mise en forme de faisceau. Dans une seconde partie, nous étudions des cristaux photoniques unidimensionnels formés par une alternance de milieux d'indices positif et négatif. Lorsque l'indice moyen est nul, une bande interdite aux propriétés nouvelles apparait. Nous montrons que le caractère dispersif des milieux transforme des pics étroits de transmission en larges bandes. Pour caractériser la propagation d'un faisceau dans un tel cristal, nous développons et validons alors un modèle qui nous permet de démontrer le potentiel en matière de mise en forme de faisceau (auto-collimation, focalisation).
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Diamantoudi, Effrosyni. "Coalition structures." Thesis, McGill University, 2000. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=36762.

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The first chapter introduces the topic of coalition structures and stresses its importance and impact on game theory. Additionally, it presents and motivates the significance of the three following chapters.
The second chapter investigates how rational individuals partition themselves into different coalitions. We propose a notion that determines simultaneously the coalition structures that are likely to prevail in a game, as well as the feasible payoff configurations associated with them. Our solution concept is built in the spirit of von Neumann and Morgenstern stability, but it overcomes the overoptimism associated with it when employed in our context. Moreover, in doing so, we achieve consistency and resolve the problem of myopia embedded in previous notions. We prove existence for a general class of games, and investigate the efficiency of our solution.
The third chapter ascertains which partitions of players will emerge and what actions will these players choose under each partition, when they can negotiate with each other and their actions have externalities. Naturally, the environment is depicted by a normal form game. The solution is a collection of pairs, each consisting of a coalition structure and a strategy profile. Although this chapter addresses the same question the Ray and Vohra (1997) paper did, it does so in a manner that overcomes the problems embedded in their approach. In particular, we assume that once a coalition deviates it fears the worst, given that the non-members do the best for themselves. In doing so, we improve upon previous solution concepts (e.g. strong and coalition-proof Nash equilibria) by NOT assuming that all other players will stay put. Yet, unlike the Ray and Vohra approach, we do not endow the deviating coalition with the power of imposing its will on all of the other players. A general solution concept is defined and its properties (efficiency, etc.) and applications are discussed.
The fourth chapter analyzes cartel stability when firms are farsighted. It studies a price leadership model a la D'Aspremont et al. (1983), where the dominant cartel acts as a leader by determining the market price, while the fringe behaves competitively. According to D'Aspremont et al.'s notion of cartel stability, a firm will not remain in a cartel as long as it prefers the outcome where it is the only member leaving the cartel for the fringe. Such an approach implies that the firm is myopic since it ignores whether the outcome of its deviation is stable itself. Our notion captures foresight by employing a solution concept built in the spirit of von Neumann and Morgenstern stable set, yet adopting an indirect dominance a la Harsanyi. We show that there always exists a unique, non-empty set of stable cartels.
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McCune, David Thomas. "Manufacturing Quality of Carbon/Epoxy IsoTruss (R) Reinforced Concrete Structures." Diss., CLICK HERE for online access, 2005. http://contentdm.lib.byu.edu/ETD/image/etd753.pdf.

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Anarella, Mateo. "Submanifolds of the nearly Kähler SL(2,R) x SL(2,R)." Electronic Thesis or Diss., Valenciennes, Université Polytechnique Hauts-de-France, 2024. http://www.theses.fr/2024UPHF0024.

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Le but de cette thèse est d’élargir la compréhension de la variété presque kählerienne SL(2,R) × SL(2,R) et de ses sous-variétés. Les variétés presquekähleriennes sont une relaxation riemannienne de la définition de variété Kähler : une variété presque hermitienne (M, g, J) est presque kählerienne si la dérivée covariante de la structure presque complexe est antisymétrique. De plus, afin d’éviter une éventuelle intersection avec les variétés de Kähler, nous exigeons que ∇J soit non dégénéré, ce que nous appelons une variété stricte presque Kähler. Les sous-variétés presque kähleriennes sont l’une des seize classes de variétés presque hermitiennes classées par Gray et Hervella dans [27]. Selon Gray, la classe la plus intéressante, les variétés presque kähleriennes, possèdent de nombreuses propriétés intéressantes. Par exemple, d’un point de vue physique, ce sont les seules variétés à six dimensions à admettre un spineur Killing [23, 28]. De plus, les variétés strictes presque kähleriennes sont intéressantes en géométrie multiplectique car elles sont 2-plectiques [37]. Ils possèdent également de nombreuses propriétés de division utiles. À savoir, étant donné une variété presque kählerienne M, il existe une variété presque kählerienne stricte M1 et une variété de Kähler M2 telle que M = M1 ×M2. Dans les dimensions deux et quatre, variétés presque kähleriennes sont automatiquement variétés de Kähler. Par conséquent, nous trouvons les plus petits exemples intéressants de variétés presque kählerienne en dimension six. En dimension huit, Gray [26] a prouvé qu’une variété presque kählerienne est toujours de Kähler ou le produit d’une variété presque kählerienne stricte à six dimensions avec une surface de Kähler. En dimension dix, Nagy [41] a prouvé qu’une variété presque Kähler est soit Kähler, un produit d’une variété Kähler stricte à six dimensions avec une variété Kähler à quatre dimensions, soit une variété Kähler stricte, qu’il a classée comme espaces de twisteurs au-dessus de variétés Kähler-quaternioniques avec constante d’Einstein positive. [etc]
A strict nearly Kähler manifold is an almost Hermitian manifold for which thecovariant derivative of the almost complex structure is non-degenerate and skewsymmetric. Strict nearly Kähler manifolds are quite rare. In six dimensions,there are only four homogeneous strict nearly Kähler manifolds: S6, S3 × S3,CP 3 and F (C3). In the pseudo-Riemannian setting, there are six analogues.We consider SL(2, R) × SL(2, R), the analogue of S3 × S3.We first study the strict nearly Kähler structure of SL(2, R) × SL(2, R). Themetric and almost complex structure of are both induced from a pseudo-Riemannian submersion π : SL (2, R)×SL (2, R)×SL(2, R) → SL (2, R)×SL (2, R).We give an expression for the full isometry group.In this space we study different types of submanifolds, such as surfaces,Lagrangian submanifolds or hypersurfaces. We divide Lagrangian submanifoldsinto four different types, which depend on their behavior with respect to analmost product structure P.We classify all totally geodesic and extrinsically homogeneous Lagrangiansubmanifolds. Moreover, we study totally geodesic surfaces and hypersurfaces with constant sectional curvature
Een strikte nagenoeg-Kählervariëteit is een bijna-Hermitische variëteit waarvoor de covariante afgeleide van de bijna-complexe structuur niet-ontaard en scheefsymmetrisch is. Dergelijke variëteiten zijn vrij zeldzaam. In dimensie zes zijn er slechts vier homogene strikte nagenoeg-Kählervariëteiten: S6, S3 × S3,CP3 en F(C3). In de pseudo-Riemannse setting bestaan er zes analogen. We beschouwen SL(2,R) × SL(2,R), analoog aan S3 × S3.We bestuderen eerst de strikte nagenoeg-Kählerstructuur van SL(2,R)×SL(2,R). De metriek en bijna-complexe structuur zijn beide geïnduceerd door een pseudo-Riemannse submersie SL(2,R)×SL(2,R)×SL(2,R) → SL(2,R)×SL(2,R). We geven een uitdrukking voor de volledige isometriegroep. In deze ruimte bestuderen we verschillende soorten deelvariëteiten, zoals oppervlakken, Lagrangiaanse deelvariëteiten en hyperoppervlakken. Lagrangiaanse deelvariëteiten verdelen we in vier verschillende types, afhankelijk van hun gedrag ten opzichte van een bijna-productstructuur. We classificeren alle totaal geodetische en extrinsiek homogene Lagrangiaanse deelvariëteiten. Bovendien bestuderen we totaal geodetische oppervlakken en hyperoppervlakken met constante sectionele kromming
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Ruppert, Wolfgang A. F., Brigitte E. Breckner, and Andreas Cap@esi ac at. "On Asymptotic Behaviour and Rectangular Band structures in SL(2,R)." ESI preprints, 2000. ftp://ftp.esi.ac.at/pub/Preprints/esi919.ps.

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Al, Hamidi Yasser. "Multivariable feedforward control of vibrations in multi-axes flexible structures : applications to multi-axes piezoelectric actuators." Thesis, Bourgogne Franche-Comté, 2017. http://www.theses.fr/2017UBFCD016/document.

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Les actionneurs multi-axes sont de plus en plus prisés par les concepteurs de systèmes de nanopositionnement car ils permettent une réduction de l'espace occupé et de l'énergie consommée, une dextérité plus grande et une modularité avec peu de contraintes pour les applications. Certains de ces actionneurs et systèmes multi-axes sont cependant caractérisés par des oscillations mal-amorties qui compromettent de manière drastique leurs performances générales. Cette thèse concerne l'exploitation des techniques de commande en boucle-ouverte input-shaping classiquement utilisées pour amortir de manière sans capteurs les oscillations dans les systèmes mono-axes et les étendent pour qu'ils soient utilisables pour les systèmes multi-axes. Les résultats proposés dans la thèse qui sont des techniques input-shaping multivariables sont ensuite appliquées sur des actionneurs piézoélectriques classiquement dédiés pour les applications de nanopositionnement
Multi-axes actuators are becoming more and more tempting to nanopositioning system designers as they enable them to save space, reduce energy consumption, increase dexterity and offer more modularity and freedom with fewer constraints to their applications. Some of these multi-axes actuators and systems exhibit however badly damped vibrations which strongly compromise their global performances. This thesis work exploits the advantages of the well-known feedforward input shaping techniques usually used to damp vibrations in monovariable (SISO) systems to present a new multivariable (MIMO) input shaping technique that can be used to damp vibrations in multi-axes systems. The approach that was used in this study is to extend a previous work that was done on multiple-input single-output (MISO) systems and generalize it for MIMO systems. The study demonstrates also the application of this newly developed technique on different piezoelectric actuators commonly used in nanopositioning systems
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Zouari, Rafik. "Détection précoce d’instabilité aérolélastique des structures aéronautiques." Rennes 1, 2008. ftp://ftp.irisa.fr/techreports/theses/2008/r-zouari.pdf.

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L'objectif de cette thèse est de concevoir des nouvelles méthodes statistiques de détection capables d'améliorer la surveillance du flottement aéroélastique lors des essais en vol. La surveillance du flottement est étudiée comme un problème de détection des déviations d'indicateurs d'instabilité. On s'appuie sur la combinaison d'une méthode d'identification sous-espaces pour définir un vecteur résidu sensible à un indicateur de flottement et d'un test CUSUM pour surveiller en ligne ses déviations par rapport à une valeur de référence. Trois méthodes de détection sont proposées dans cette thèse. La première réalise une détection du flottement par rapport à un état de référence prédit au voisinage de l'instabilité en utilisant la connaissance a priori d'un modèle aéroélastique et/ou des mesures expérimentales des essais en vol. La deuxième méthode utilise une surveillance adaptative du flottement en actualisant l'état de référence au cours du temps. La troisième méthode proposée vise à suivre l'amortissement en déterminant des intervalles de confiance par des tests de détection
The goal of this thesis is to design useful statistical detection approaches to improve the aeroelastic flutter monitoring during the flight testing process. Flutter monitoring is investigated as a detection problem regarding the deviations of instability indicators. It consists of a combination of a subspace-based identification method to define a residual vector sensitive to a flutter indicator and a statistical CUSUM test for an on-line deviations monitoring with respect to a fixed reference value. This thesis proposes three approaches. The first performs a flutter detection with respect to a reference modal state predicted close to instability using the a priori knowledge of an aeroelastic model and/or experimental flight testing data. The second approach uses an adaptive flutter monitoring through updating the reference state during the on-line test. The third approach exploits detection tests for damping assessment with confidence bounds determination
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Zouari, Rafik Basseville Michèle Mevel Laurent. "Détection précoce d'instabilité aérolélastique des structures aéronautiques." Rennes : [s.n.], 2008. ftp://ftp.irisa.fr/techreports/theses/2008/r-zouari.pdf.

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Books on the topic "Structures en boucle R"

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Mailund, Thomas. Functional Data Structures in R. Berkeley, CA: Apress, 2017. http://dx.doi.org/10.1007/978-1-4842-3144-9.

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Center, Turner-Fairbank Highway Research, ed. Office of Infrastructure R & D: Structures. [McLean, Va.]: U.S. Dept. of Transportation, Federal Highway Administration, Turner-Fairbank Highway Research Center, 2003.

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Stefański, Krzysztof. Atlas architektury dawnej Łodzi: Do 1939 r. Łódź: Archidiecezjalne Wydawn. Łódzkie, 2003.

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name, No. Arkitektur i 1000 r: En arkitekturguide for Trondheim. Trondheim: TAF Trondhjems arkitektforening, 2001.

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Aalto-museo, Alvar, ed. Structures of light: Photographs by William J. R. Curtis. Helsinki: Alvar Aalto Academy, 2007.

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Judah ben Samuel, ca. 1150-1217. and Ḥevrah le-shiḳum ule-fituaḥ ha-Rovaʻ ha-Yehudi ba-ʻIr ha-ʻAtiḳah bi-Yerushalayim., eds. Shiḥzur u-veniyat ḥurvat R. Yehudah Ḥasid. [Jerusalem]: ha-Ḥevrah le-shiḳum ule-fituaḥ ha-Rovaʻ ha-Yehudi ba-ʻIr ha-ʻAtiḳah bi-Yerushalayim, 2001.

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Mustapha, Khameel B. R for Finite Element Analyses of Size-dependent Microscale Structures. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-7014-4.

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Otto, Weininger. Third-R structures: The math research program in primary grades. Toronto, Ont: Ontario Institute for Studies in Education, 1991.

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Otto, Weininger. Third-R structures: The math research program in primary grades. Toronto, Ont: Ontario Institute for Studies in Education, 1991.

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Szymański, Michał. 2 x Warszawa: Śródmieście : przewodnik z 1893 i 2013 r. Warszawa: Wydawnictwo CM (Ciekawe Miejsca.net), 2013.

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Book chapters on the topic "Structures en boucle R"

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Pace, Larry A. "Data Structures." In R Recipes, 27–41. Berkeley, CA: Apress, 2014. http://dx.doi.org/10.1007/978-1-4842-0130-5_3.

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bin Uzayr, Sufyan. "Data Structures." In Mastering R, 189–96. Boca Raton: CRC Press, 2023. http://dx.doi.org/10.1201/9781003358480-7.

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Wiley, Joshua F., and Larry A. Pace. "Chapter 4: Control Structures." In Beginning R, 35–42. Berkeley, CA: Apress, 2015. http://dx.doi.org/10.1007/978-1-4842-0373-6_4.

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Allerhand, Mike. "Data Structures." In A Tiny Handbook of R, 11–41. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-17980-8_2.

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Roiger, Richard J. "Data Structures and Manipulation." In Just Enough R!, 41–60. Boca Raton : CRC Press, 2020.: Chapman and Hall/CRC, 2020. http://dx.doi.org/10.1201/9781003006695-3.

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Rathi, Megha. "Data Structures in R." In Introduction to Statistical Computing and Visualization Using R, 62–120. Boca Raton: Chapman and Hall/CRC, 2025. https://doi.org/10.1201/9781003489382-3.

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Mailund, Thomas. "Abstract Data Structures." In Functional Data Structures in R, 3–23. Berkeley, CA: Apress, 2017. http://dx.doi.org/10.1007/978-1-4842-3144-9_2.

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Swiggers, Pierre. "Grammar and language in Syntactic Structures." In Chomskyan (R)evolutions, 215–34. Amsterdam: John Benjamins Publishing Company, 2010. http://dx.doi.org/10.1075/z.154.07swi.

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Deserno, Marie K., Adela-Maria Isvoranu, Sacha Epskamp, and Tessa F. Blanken. "Descriptive Analysis of Network Structures." In Network Psychometrics with R, 45–65. London: Routledge, 2022. http://dx.doi.org/10.4324/9781003111238-4.

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Kaplan, Jacob. "Data types and structures." In A Criminologist's Guide to R, 35–46. Boca Raton: Chapman and Hall/CRC, 2022. http://dx.doi.org/10.1201/9781003279211-3.

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Conference papers on the topic "Structures en boucle R"

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Bolukbasi, Akif, and Richard Weisenburger. "Fluid Structure Interaction of Fuel Tanks and Airframe Structures During a Crash Event." In Vertical Flight Society 80th Annual Forum & Technology Display, 1–9. The Vertical Flight Society, 2024. http://dx.doi.org/10.4050/f-0080-2024-1173.

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This paper presents the results of a research and development (R&D) effort focused on fluid structure interactions between airframe structures and bladder type fuel tanks during a crash environment. During this R&D effort, fuel tank and surrounding structure crash impact tests were conducted using an innovative test configuration that allowed low-cost fabrication of test articles which represented several different design architectures. LS-DYNA models of the crash test article configurations were also developed and correlated with the tests data. Good correlation between the test data and LS-DYNA analysis results was achieved. The paper also includes recommendations for design of the airframe structures around the fuel tanks based on the fluid structure interaction insights gained from the crash tests and analyses.
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Carter, Charles J. "Origins of R=3." In Structures Congress 2009. Reston, VA: American Society of Civil Engineers, 2009. http://dx.doi.org/10.1061/41031(341)82.

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Duwadi, Sheila Rimal, and Myint Lwin. "Securing the Highway Infrastructure — An R&D Program." In Structures Congress 2006. Reston, VA: American Society of Civil Engineers, 2006. http://dx.doi.org/10.1061/40889(201)177.

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Aprile, A., S. Limkatanyu, and E. Spacone. "Analysis of R/C Beams Strengthened with FRP Plates." In Structures Congress 2001. Reston, VA: American Society of Civil Engineers, 2001. http://dx.doi.org/10.1061/40558(2001)161.

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Hindi, Riyadh, Wesley Turechek, Bradley Hoven, and Douglas Stahl. "Hysteretic Behavior of R/C Columns Confined with Opposing Spirals." In Structures Congress 2006. Reston, VA: American Society of Civil Engineers, 2006. http://dx.doi.org/10.1061/40889(201)213.

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Dean, Scott. "Design and Construction of the S. R. 836 Flyover Bridges." In Structures Congress 2007. Reston, VA: American Society of Civil Engineers, 2007. http://dx.doi.org/10.1061/40946(248)77.

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Park, Chul H., and Daniel J. Inman. "Uniform model for series R-L and parallel R-L shunt circuits and power consumption." In 1999 Symposium on Smart Structures and Materials, edited by Norman M. Wereley. SPIE, 1999. http://dx.doi.org/10.1117/12.350755.

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Wu, Kuang-Hsi, S. K. Dalip, Y. Q. Liu, and Zhongjie J. Pu. "Damping characteristics of R-phase NiTi shape memory alloys." In Smart Structures & Materials '95, edited by A. Peter Jardine. SPIE, 1995. http://dx.doi.org/10.1117/12.209793.

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Argento, Gloria Rita, Stefano Gabriele, and Valerio Varano. "R-funicularity for shells’ shape optimization." In International fib Symposium - Conceptual Design of Structures 2021. fib. The International Federation for Structural Concrete, 2021. http://dx.doi.org/10.35789/fib.proc.0055.2021.cdsymp.p062.

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Marvel, L. A., J. C. West, and R. A. Hindi. "Compressive Stress-Strain Behavior of R/C Concrete Columns Using Opposing Spirals." In Structures Congress 2008. Reston, VA: American Society of Civil Engineers, 2008. http://dx.doi.org/10.1061/41016(314)294.

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Reports on the topic "Structures en boucle R"

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Tajima, Tsuyoshi. R&D for Superconducting RF Structures at Los Alamos. Office of Scientific and Technical Information (OSTI), March 2013. http://dx.doi.org/10.2172/1067387.

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Tajima, Tsuyoshi. R&D to Enhance the Performance of Superconducting RF Structures. Office of Scientific and Technical Information (OSTI), October 2015. http://dx.doi.org/10.2172/1225282.

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Warren, Terry, Barry White, and Robert Ebeling. Corroded Anchor Structure Stability/Reliability (CAS_Stab-R) software for hydraulic structures. Information Technology Laboratory (U.S.), January 2018. http://dx.doi.org/10.21079/11681/26273.

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Wang, Juwen. Recent Progress in R& D of Advanced Room Temperature Accelerator Structures. Office of Scientific and Technical Information (OSTI), August 2003. http://dx.doi.org/10.2172/815263.

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Barter, Rebecca. Python for R Users. Instats Inc., 2024. http://dx.doi.org/10.61700/g1u72h8m3dbuw1676.

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This workshop is designed to help researchers fluent in R, particularly with the tidyverse, transition easily to Python, enhancing their data analysis skills across a range of fields. Participants will gain a robust understanding of Python's libraries and data structures, enabling them to integrate Python into their research workflows efficiently and expand their analytical capabilities, including with Python's substantial toolkits for machine learning and deep learning such as Scikit-learn and Keras.
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Li, Z. X-BAND LINEAR COLLIDER R& D IN ACCELERATING STRUCTURES THROUGH ADVANCED COMPUTING. Office of Scientific and Technical Information (OSTI), July 2004. http://dx.doi.org/10.2172/827340.

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Yang, Jiann C., Matthew F. Bundy, John L. Gross, Anthony P. Hamins, Fahim H. Sadek, and Anand Raghunathan. International R and D Roadmap for Fire Resistance of Structures Summary of NIST/CIB Workshop. National Institute of Standards and Technology, June 2015. http://dx.doi.org/10.6028/nist.sp.1188.

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Vinson, D. Evaluation of reduced silver content relative to the activation products in remaining R- and P-reactor structures. Office of Scientific and Technical Information (OSTI), June 2008. http://dx.doi.org/10.2172/1395262.

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Coggeshall, C., and R. M. Margolis. Consortia Focused on Photovoltaic R&D, Manufacturing, and Testing: A Review of Existing Models and Structures. Office of Scientific and Technical Information (OSTI), March 2010. http://dx.doi.org/10.2172/974459.

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Almand, Kathleen H., Long T. Phan, Therese P. McAllister, Monica A. Starnes, and John L. Gross. NIST-SFPE workshop for development of a national R&D roadmap for structural fire safety design and retrofit of structures :. Gaithersburg, MD: National Institute of Standards and Technology, 2004. http://dx.doi.org/10.6028/nist.ir.7133.

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