Letteratura scientifica selezionata sul tema "Grand spin"
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Articoli di riviste sul tema "Grand spin"
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Cohen, Marcus S. "Spin geometry and grand unification". Advances in Applied Clifford Algebras 11, n. 1 (giugno 2001): 129–63. http://dx.doi.org/10.1007/bf03042042.
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Villain, J. "Magnétisme des cristaux de molécules à grand spin". Annales de Physique 28, n. 1 (2003): 1–96. http://dx.doi.org/10.1051/anphys:2003003.
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Kühn, R., D. Grensing e A. Huber. "Grand ensemble solution of a classical spin glass model". Zeitschrift für Physik B Condensed Matter 63, n. 4 (dicembre 1986): 447–52. http://dx.doi.org/10.1007/bf01726192.
Testo completo
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Meier, David L. "Grand unification of AGN and the accretion and spin paradigms". New Astronomy Reviews 46, n. 2-7 (maggio 2002): 247–55. http://dx.doi.org/10.1016/s1387-6473(01)00189-0.
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Chester, David, Alessio Marrani e Michael Rios. "Beyond the Standard Model with Six-Dimensional Spinors". Particles 6, n. 1 (28 gennaio 2023): 144–72. http://dx.doi.org/10.3390/particles6010008.
Testo completoAbstract (sommario):
Six-dimensional spinors with Spin(3,3) symmetry are utilized to efficiently encode three generations of matter. E8(−24) is shown to contain physically relevant subgroups with representations for GUT groups, spacetime symmetries, three generations of the standard model fermions, and Higgs bosons. Pati–Salam, SU(5), and Spin(10) grand unified theories are found when a single generation is isolated. For spacetime symmetries, Spin(4,2) may be used for conformal symmetry, AdS5→dS4, or simply broken to Spin(3,1) of a Minkowski space. Another class of representations finds Spin(2,2) and can give AdS3 with various GUTs. An action for three generations of fermions in the Majorana–Weyl spinor 128 of Spin(4,12) is found with Spin(3) flavor symmetry inside E8(−24). The 128 of Spin(12,4) can be regarded as the tangent space to a particular pseudo-Riemannian form of the octo-octonionic Rosenfeld projective plane E8(−24)/Spin(12,4)=(OsxO)P2.
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Goh, Segun, JunHyuk Woo, Jean-Yves Fortin e MooYoung Choi. "Grand canonical description of equilibrium and non-equilibrium systems using spin formalism". Physica A: Statistical Mechanics and its Applications 558 (novembre 2020): 124983. http://dx.doi.org/10.1016/j.physa.2020.124983.
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MATERDEY, TOMAS B. "GRAND CANONICAL MIXED-STATE WIGNER FUNCTION IN A MAGNETIC FIELD: de HAAS–van ALPHEN OSCILLATIONS". International Journal of Modern Physics B 21, n. 06 (10 marzo 2007): 829–55. http://dx.doi.org/10.1142/s0217979207036680.
Testo completoAbstract (sommario):
Kohn proved in 1961 that interactions between electrons did not change the de Haas–van Alphen (dHvA) oscillation frequency for single electrons in the nondegenerate ground-state [Phys. Rev.123(4), 1242 (1961)]. It was proved recently that the pure-state Wigner function for an electron in a magnetic field carries this quantum and physical oscillation, and a quantum dielectric function, so the conductance can be calculated from the Wigner function [Int. J. Mod. Phys. B17(25), 4555 (2003)], [Int. j. Mod. Phys. B17(26), 4683 (2003)]. We present the first complete proof that at a finite temperature, the mixed-state Wigner function also shows dHvA oscillations with the same frequency. The Wigner function is a fundamental quantity, the fact that it carries observable physical information shows a great potential in the design of new quantum materials at the nanoscale. The definition of the mixed-state Wigner function involves a grand canonical partition function (GCPF). Although dHvA is a well-known phenomenon, we present the first complete proof of it happening in degenerate mixed-states, based on a GCPF, which requires reconciliation between the dHvA experimental condition of a fixed number of particles and the GCPF's sum over number of particles. The GCPF is applied to one of the two spin species, while both the spin and spin-magnetic moment interaction are considered. We show that the contour integration in ω(ε) leads to a non-oscillatory term that is much larger than an oscillatory term, in the dHvA experimental conditions of high fields and low temperatures. This dominance of the non-oscillatory term explains the constancy of the chemical potential, allowing it to reduce to the Fermi energy in the limit of zero temperature. The obtained mixed-state Wigner function shows a fundamental period of oscillation with respect to B-1 that reduces to the Onsager's period for dHvA oscillations. This indicates that in mixed-states, dHvA oscillations depend on electrons of one spin species, this means the population of electrons of each spin species oscillates with the magnetic field. The temperature dependence in the Wigner function will allow a combination of phase-space and thermodynamics information for mesoscopic structures, and the study of phase-space density holes such as BGK modes in the quantum domain.
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AHLUWALIA, D. V., M. B. JOHNSON e T. GOLDMAN. "MAJORANA-LIKE (j, 0) ⊕ (0, j) REPRESENTATION SPACES: CONSTRUCTION AND PHYSICAL INTERPRETATION". Modern Physics Letters A 09, n. 05 (20 febbraio 1994): 439–50. http://dx.doi.org/10.1142/s0217732394000460.
Testo completoAbstract (sommario):
We present a formalism that extends the Majorana-construction to arbitrary spin (j, 0) ⊕ (0, j) representation spaces. For the example case of spin-one, a wave equation satisfied by the Majorana-like (1, 0) ⊕ (0, 1) spinors is constructed and its physical content explored. The (j, 0) ⊕ (0, j) Majorana-construct is found to possess an unusual classical and quantum field theoretic structure. Relevance of our formalism to parity violation, hadronic phenomenologies, and grand unified field theories is briefly pointed out.
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Besprosvany, J. "Standard-Model Coupling Constants from Compositeness". Modern Physics Letters A 18, n. 27 (7 settembre 2003): 1877–85. http://dx.doi.org/10.1142/s0217732303011642.
Testo completoAbstract (sommario):
A coupling-constant definition is given based on the compositeness property of some particle states with respect to the elementary states of other particles. It is applied in the context of the vector-spin-1/2-particle interaction vertices of a field theory, and the standard model. The definition reproduces Weinberg's angle in a grand-unified theory. One obtains coupling values close to the experimental ones for appropriate configurations of the standard-model vector particles, at the unification scale within grand-unified models, and at the electroweak breaking scale.
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Entin-Wohlman, O., Yuval Gefen, Yigal Meir e Y. Oreg. "Effects of spin-orbit scattering in mesoscopic rings: Canonical- versus grand-canonical-ensemble averaging". Physical Review B 45, n. 20 (15 maggio 1992): 11890–95. http://dx.doi.org/10.1103/physrevb.45.11890.
Testo completoTesi sul tema "Grand spin"
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Trifa, Youssef. "Dynamiques de corrélations et d'intrication dans des gaz d'atomes froids". Electronic Thesis or Diss., Lyon, École normale supérieure, 2024. http://www.theses.fr/2024ENSL0018.
Testo completoAbstract (sommario):
Le problème quantique à N corps, notamment l’étude des propriétés dynamiques d’un système quantique composite est l’un des problèmes les plus durs de la physique moderne, car il y a peu de résultats analytiques et les méthodes numériques exactes requièrent des ressources numériques exponentielles en la taille du système. Dans cette thèse, nous avons étudié la mise en évidence de propriétés de corrélations et d’intrication pour des systèmes d’atomes magnétiques sur réseau, par exemple via la compression de spin. Pour cela nous avons mis au point de nouvelles méthodes numériques approchées, qui permettent de simuler des systèmes de grande taille. Cela nous a permis de proposer des protocoles qui permettent de générer de la compression de spin qui croit d’autant plus que le système est grand, ce qui a un double intérêt. D’une part, il s’agit d’un témoin d’intrication, qui permettrait donc de détecter de l’intrication dans un système d’atomes magnétiques, ce qui n’a pas encore été réalisée expérimentalement à ce jour. D’autre part la compression de spin présente un important intérêt métrologique, puisque les états comprimés permettent des mesures extrêmement précises de champs magnétiques par exemple, bien au-delà de ce qui est possible avec des atomes indépendants. Enfin, nous avons étudié la génération d’autres formes d'intrication, à savoir la compression à deux modes (de spin, ou d'impulsion), cette fois pour des systèmes d’atomes condensés. Connue dans le cas de condensats d’atomes de spin-1, nous avons proposé comment généraliser ce processus au cas de compression en impulsion, en utilisant un Hamiltonien modulé dans le temps. Les états intriqués ainsi produits sont potentiellement très intéressants dans la mesure à haute précision de forces inertiellesThe quantum many-body problem, and especially the study of dynamical properties of a multipartite quantum system, is one of the hardest problems of modern physics. There exist only a few analytical results and exact numerical simulations require an amount of resources that grow exponentially with the system size.In this thesis, we studied correlations and entanglement properties for systems composed of magnetic atoms on a lattice, for instance via the generation of spin squeezing. For this purpose we have developed new approximate numerical methods that allow us to study large system sizes. This enabled us to propose protocols to generate an amount of spin squeezing that scales with the system size. The advantage is twofold. Since spin squeezing is an entanglement witness, this would allow for entanglement detection in a system of magnetic atoms - which has yet to be realized experimentally. Moreover, spin squeezing offers an important metrological advantage, asspin-squeezed states can be used for extremely precise measurements of external magnetic fields, far beyond what one can achieve within dependent atoms.Finally, we studied the generation of other forms of entanglement, namely Dicke squeezing (of spin or momentum), in systems of Bose condensed atoms. This form of entanglement is well-known in spin-1 atomic condensates. Here, we propose a protocol to generalize it to the case of momentum modes, using a time-dependent Hamiltonian. The entangled states generated during the dynamics are potentially useful for the precision measurements of inertial forces
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Lagarde, Delphine. "Dynamique de spin dans des structures semiconductrices à base de ZnO et de GaN". Toulouse, INSA, 2008. http://eprint.insa-toulouse.fr/archive/00000229/.
Testo completoAbstract (sommario):
Ce travail de thèse est une contribution à l'étude de la dynamique de spin des porteurs dans les structures semiconductrices de grande énergie de bande interdite à base de GaN et de ZnO. Nous avons mis en œuvre la technique de pompage optique orienté résolu en temps dans le domaine de l'ultra-violet pour mesurer les temps de relaxation de spin dans ces structures. Les propriétés de spin du trou et de l'exciton ont été analysées dans des couches épitaxiées de ZnO à partir des propriétés de polarisation de la photoluminescence issue des complexes d'excitons piégés sur des donneurs neutres. Nous avons mesuré à la fois le temps de relaxation de spin et le temps de cohérence de spin du trou localisé et avons mis en évidence le temps de relaxation de spin rapide de l'exciton libre. Nous avons également réalisé des études de pompage optique orienté sur des structures de GaN en phase cubique (blende de zinc), du matériau massif aux boîtes quantiques. Dans ces dernières, en analysant l'alignement optique de l'exciton dans des conditions d'excitation quasi-résonante, nous avons démontré le blocage de la relaxation de spin de l'exciton jusqu'à température ambianteThis thesis work is a contribution to the study of the spin dynamics of carriers in ZnO- or GaN-based wide bandgap semiconductor structures. We use time-resolved optical pumping experiments dedicated to the ultra-violet to measure spin relaxation times in those structures. The spin properties of hole and exciton in epitaxial layers of ZnO have been analysed from the polarization properties of the photoluminescence detected from neutral-donor bound exciton complexes. We measure both the localized hole spin relaxation time and spin decoherence time and have evidenced the fast spin relaxation time of the free exciton. We have also performed optical orientation experiments on cubic (zinc blende) GaN structures, from bulk material to quantum dots. In those, by studying the optical alignment of exciton spin under quasi-resonant excitation, we demonstrate the quenching of the exciton spin relaxation up to room temperature
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Šćulac, Toni. "Measurements of the Higgs boson properties through its decay to four leptons in the CMS detector with 13 TeV pp collisions at LHC". Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLX092/document.
Testo completoAbstract (sommario):
Les mesures des propriétés du boson de Higgs dans le canal en 4 leptons sont rapportées dans cette thèse. Les données prises avec le détecteur CMS dans des collisions proton-proton à 13 TeV dans le centre de masse sont utilisées. Des améliorations importantes, touchant plusieurs aspects de l'analyse, ont été apportées. Mes contributions principales portent sur deux grands axes: amélioration de la mesure d'efficacité de sélection des électrons et analyse des données 2017 en tant qu'analyseur et éditeur principal.Les résultats sont montrées pour les données du Run II, collectées en 2016 et 2017, correspondant à des luminosités intégrées de 35.9 fb-1 et 41.5 fb-1, respectivement.Les modifications de l'intensité de signal, relative aux prédictions du Modèle Standard (MS), la masse et la largeur du boson de Higgs ainsi que les sections efficaces de production inclusives et différentielles sont mesurées. Tous les résultats sont en bon accord avec les prédictions du MS pour un boson de Higgs avec une masse de 125 GeV.Finalement, une mesure des modificateurs de l'intensité du signal est effectuée en combinant les données 2016 et 2017, pour un total de 77 fb-1. Une nouvelle fois, ces mesures sont en accord avec le MS. De nouvelles frontières sont désormais atteintes, les incertitudes statistiques et systématiques sont désormais d'égale contribution à l'incertitude totale sur les mesures inclusives de section efficace de productionThis thesis reports on measurements of Higgs boson properties in the four-lepton channel in proton-proton collisions at a centre-of-mass energy of 13 TeV with the CMS detector. Significant improvements in many aspects of the analysis are introduced. My contribution is twofold, improving the electron selection efficiency measurements and leading the analysis of data recorded in 2017 as the main author. Results of the analysis of Run II data are presented for two data sets recorded in 2016 and 2017, corresponding to integrated luminosities of 35.9 fb−1 and 41.5 fb−1, respectively. The signal strength modifiers relative to the standard model prediction, the mass and decay width of the boson, differential and inclusive cross sections are measured. All results are in good agreement with standard model expectations for a 125 GeV Higgs boson within the uncertainties. Finally, a measurement of the signal strength modifiers on combined 77.4 fb−1 of data collected in 2016 and 2017 is also performed and is again found to be compatible with the SM predictions. New frontiers are reached as the statistical and systematical contributions to the total uncertainty on the inclusive signal strength measurement are found to be of the similar size
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Procureur, Sébastien. "Détermination de la polarisation des gluons dans le nucléon par la production de hadrons à grande impulsion transverse à COMPASS". Paris 11, 2006. http://www.theses.fr/2006PA112117.
Testo completoAbstract (sommario):
L´objectif principal de l´expérience COMPASS au CERN est la détermination de la polarisation des gluons dans le nucléon, Delta G / G. On mesure pour cela l´asymétrie d´hélicité du processus de fusion photon gluon, dans la diffusion de muons polarisés sur une cible de deutérons polarisés. Ce processus peut être sélectionné par la production de hadrons à grande impulsion transverse (p_T), ce qui permet de disposer d´une grande statistique. En contrepartie, la présence d´un bruit de fond physique complique l´extraction de Delta G / G. Cette thèse présente différentes études menées afin d´optimiser la détermination de Delta G / G dans ce canal. Une étude sur l´alignement du spectromètre est notamment présentée, améliorant ainsi sa résolution. Les performances des 12 détecteurs de type Micromegas ont également été étudiées au cours du run 2004. Puis, les asymétries obtenues à partir de l´analyse des données 2002 à 2004 sont calculées, pour différentes variantes de la sélection à grand p_T: 1 ou 2 hadrons, petit ou grand Q^2. Une optimisation de la sélection a aussi été développée à l´aide d´un réseau de neurones. Une étude détaillée de la fausse asymétrie expérimentale est également réalisée. L´extraction de Delta G / G est ensuite décrite, à partir de simulations Monte Carlo (utilisant PYTHIA ou LEPTO). Pour la première fois, l´asymétrie des processus dits photons résolus est estimée. Une amélioration de la reconstruction de la fraction d´impulsion du nucléon portée par le gluon est également proposée, par la reconstruction de pseudo-jets. Enfin, les petites valeurs obtenues pour Delta G / G sont discutées, dans le cadre de la décomposition en spin du nucléonThe main goal of the COMPASS experiment at CERN is the determination of the gluon polarisation in the nucleon, Delta G / G. For this, the helicity asymmetry of the photon gluon fusion process is measured, in the scattering of polarized muons on a polarised deuteron target. This process can be tagged by the production of hadrons with high transverse momentum (p_T), that allows to get a large statistics. On the other hand, a physical background remains and complicates Delta G / G extraction. This PhD thesis presents different studies performed to optimize the determination of Delta G / G in this channel. In particular, a study of the spectrometer alignment is presented, leading to an improvement of its resolution. Performances of the 12 Micromegas detectors have also been studied during 2004 run. Then, the asymmetries obtained in the analysis of 2002 to 2004 data are calculated, for various high p_T selection: 1 or 2 hadrons, low or high Q^2. An optimization of the selection, based on a neural network, has also been developped. ,and a detailed study of the experimental false asymmetry has been performed. Delta G / G extraction is then described, based on Monte Carlo simulations (using PYTHIA or LEPTO). For the first time, the asymmetry of so called resolved photon processes is estimated. An improvement on the reconstruction of nucleon momentum fraction carried by the gluon is also proposed, by reconstructing pseudo-jets. Finally, small values obtained for Delta G / G are discussed, within the framework of the nucleon spin decomposition
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Pequegnot, Anne-Laure. "Recherche de nouvelles particules de spin 0 se désintégrant en paires de quarks top-antitop et calibration en énergie des jets au-delà du TeV avec l’expérience CMS au LHC". Thesis, Lyon, 2016. http://www.theses.fr/2016LYSE1165/document.
Testo completoAbstract (sommario):
L'expérience CMS auprès du LHC, grand collisionneur de hadrons, est un détecteur généraliste qui permet d'étudier tous les aspects des collisions proton-proton produites par le LHC : de l'étude du Modèle Standard et du boson de Higgs à la recherche de signaux de nouvelle physique au-delà du Modèle Standard.La première partie de cette thèse est dédiée à la calibration en énergie des jets dans CMS, un des plus grands défis et une étape fondamentale pour la réussite du programme de physique dans cet environnement hadronique. Plus particulièrement, l'étude des événements multijets permet de contraindre l'échelle en énergie des jets au-delà du TeV. Les corrections en énergie ainsi extraites sont primordiales pour les analyses de physique utilisant des jets, et sont utilisées par toute la collaboration CMS.La deuxième partie est consacrée à la recherche de particules de spin 0 se désintégrant en paires de quarks top-antitop. En effet, de nombreux modèles de nouvelle physique prédisent de nouvelles particules scalaires ou pseudoscalaires avec un fort couplage au quark top. Une étude phénoménologique de deux de ces modèles est présentée, à savoir les modèles à deux doublets de Higgs (2HDM) et l'extension supersymétrique minimale du Modèle Standard (MSSM). Ces modèles offrent tous deux un secteur de Higgs enrichi avec entre autre deux bosons de Higgs neutres additionnels, un scalaire et un pseudoscalaire. Une analyse du spectre de masse invariante des paires top-antitop utilisant les données collectées par CMS en 2012 à une énergie dans le centre de masse de 8 TeV visant à mettre en évidence l'existence de telles particules est menée. Cette analyse prend en compte pour la première fois les effets des interférences entre la production des paires top-antitop du Modèle Standard et la production résonante à travers la nouvelle particule de spin 0. Il est montré que l'impact des interférences ne peut être négligé. Aucune déviation par rapport aux prédictions théoriques du Modèle Standard n'a été observée dans le spectre de masse invariante des paires top-antitop. Un premier aperçu des données à 13 TeV est également présentéThe CMS experiment at the LHC, the Large Hadron Collider, is a general-purpose detector built to study the proton-proton collisions produced by the LHC, corresponding to a broad physics programme ranging from studying the Standard Model and the Higgs bosons to searching for signal of new physics beyond the Standard Model.The first part of this thesis is dedicated to the jet energy calibration in CMS, one of the most challenging and crucial steps for the sucess of the physics programme within the hadronic environment. More specifically, the study of multijet events allows to constraint the jet energy scale beyond the TeV-scale. The jet energy corrections thus obtained are fundamental for the physics analyses using jets, and are used by all the CMS collaboration.The second part of this manuscript is dedicated to the search for new spin 0 particles decaying into top-antitop quarks pairs. Indeed, several new physics models predict new scalar or pseudoscalar particles with an enhanced coupling to the top quark. A phenomenological study of two of those models is presented, namely the two higgs doublet models (2HDM) and the minimal supersymmetric extension of the Standard Model (MSSM). These models both offer an enriched Higgs sector with in particular two additional neutral Higgs bosons, one scalar and one pseudoscalar. The analysis of the top-antitop pairs mass spectrum using data collected by CMS in 2012 at an energy in the center of mass of 8 TeV is presented, looking for such particles. This search takes into account for the first time the effects of interference between Standard Model top-antitop pairs production and its resonant production through the spin 0 particle. This work shows the impact of interference cannot be neglected. No deviation from the Standard Model predictions has been observed in the top-antitop mass spectrum. A first look at 13 TeV data is also presented
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Soden, Aisling Mary. "The initiation and evolution of ignimbrite faults, Gran Canaria, Spain". Connect to e-thesis, 2008. http://theses.gla.ac.uk/191/.
Testo completoAbstract (sommario):
Thesis (Ph.D.) - University of Glasgow, 2008.Ph.D. thesis submitted to the Department of Geographical and Earth Sciences, Faculty of Physical Sciences, University of Glasgow, 2008. Includes bibliographical references. Print version also available.
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Soden, Aisling M. "The initiation and evolution of ignimbrite faults, Gran Canaria, Spain". Thesis, University of Glasgow, 2008. http://theses.gla.ac.uk/191/.
Testo completoAbstract (sommario):
Understanding how faults initiate and fault architecture evolves is central to predicting bulk fault zone properties such as fault zone permeability and mechanical strength. The study of faults at the Earth’s surface and at near-surface levels is significant for the development of high level nuclear waste repositories, and CO2 sequestration facilities. Additionally, with growing concern over water resources, understanding the impact faults have on contaminant transport between the unsaturated and saturated zone has become increasingly important. The proposal of a high-level nuclear waste repository in the tuffs of Yucca Mountain, Nevada has stimulated interest into research on the characterisation of brittle deformation in non-welded to densely welded tuffs and the nature of fluid flow in these faults and fractures. The majority of research on the initiation and development of faults has focussed on shear faults in overall compressional stress regimes. Dilational structures have been examined in compressional settings e.g. overlapping faults generating extensional oversteps, or in normal faults cutting mechanical layered stratigraphy. Previous work has shown the affect mechanical stratigraphy has on fault dip angle; competent layers have steeply dipping segments and less competent layers have shallowly dipping segments. Displacement is accommodated by shear failure of the shallow segments and hybrid failure of the steeply dipping segments. As the fault walls of the shear failure segment slip past each other the walls of the hybrid failure segment are displaced horizontally as well as vertically thus forming dilation structures such as pull-aparts or extensional bends. Work on truly extensional faults has been at the kilometre scale of fissure swarms in rift systems where the focus is on fault geometry and direction of fault propagation. This study examines dilational faults with offsets of centimetres to 10’s of meters within moderately and densely welded ignimbrite units on the caldera island of Gran Canaria, Spain. Through the investigation of fault populations within different ignimbrite units I have examined how the fault architecture changes with accumulated displacement, identified the factors controlling fault core evolution and using these observations developed a new model for the initiation and growth of dilational faults in ignimbrites. The faults in this study do not have a linear correlation of increasing fault core thickness with displacement. Fault core width varies along fault dip and the largest offset faults have the narrowest fault cores. Furthermore, the damage zone joint frequency shows a limited increase with increasing displacement and faults and joints are sub-parallel. From these observations I have developed a new model for fault initiation and evolution in which the petrophysical properties of the host rock are the primary control on fault architecture. Faults initiate on existing sub-parallel joints and grow by the incorporation of material from joint surfaces and joint bound slabs. The growth of the fault depends on the joint spacing and the competency of the host rock. In densely welded ignimbrites, joint spacing is controlled by sub-layers within the ignimbrite unit which are formed by flattening and stretching of fiamme. In moderately welded ignimbrites, fiamme and lithic inclusions in the ash matrix act as sites of joint initiation; the greater the abundance of such flaws the higher the joint frequency. Whether fault growth is promoted or inhibited depends to some extent on the competency of the material. Faults cutting ash-rich friable units have narrow fault cores regardless of displacement. This suggests that the material is easily abraded in the fault core inhibiting fracturing of the host rock and incorporation of new material. Hence host rock fabric and composition have an important influence on fault architecture in these ignimbrite units. The other influence on fault evolution is the tensile stress regime in which faulting occurs. The faults in this study form by hybrid failure and so have both vertical and horizontal displacements. The dilation of existing joints causes slip on the joints and allows material to fall into the joint forming a fault core. This work identifies distinct differences between the mechanism of dilational fault initiation and resultant fault architecture compared to that of shear faults. The observations made in this study indicate that the host rock petrophysical properties, stress regime at time of faulting (tensile or compressive) and confining pressure are primary influences on fault architecture and not displacement; contradicting the widely accepted fault thickness-displacement scaling relationship. I suggest that the architecture of dilational faults can be predicted by examining the host rock properties and using the data from this study have developed a framework that illustrates how ignimbrite host rock properties may affect deformation structures. Such frameworks for individual lithologies may be more useful in predicting fault zone properties as opposed to global scaling relationships. The results of this study have implications for conceptual models of fluid flow based on fault architectures predicted using the thickness-displacement relationship.
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Inglis-Jones, James John. "The Grand Condé in exile : power politics in France, Spain and the Spanish Netherlands 1652-1659". Thesis, University of Oxford, 1995. http://ora.ox.ac.uk/objects/uuid:3ab667bf-f5af-45b7-985f-1d936f8299a4.
Testo completoAbstract (sommario):
This thesis looks at the career of the Grand Condé - Louis II de Bourbon, Prince de Condé - between 1652 and 1660. During this period the prince was in exile in the Spanish Netherlands. As a consequence of his power and status in France the prince's exile had a decisive impact not just upon the politics of the captaingeneral's court in Brussels, but more widely, upon the foreign policy of Cromwell's Protectorate, Philip IV's government in Madrid, the regime of Cardinal Mazarin in Paris and the Franco-Spanish war. International relations between France and Spain during the 1650's have been largely ignored by historians, so too has French political history in this period. Yet, the 1650's were a vital decade for France and Spain both historically and historiographically. The period saw the final stage of the costly and attritional conflict between the two 'great' crowns, whilst in France the regime of Cardinal Mazarin was the last ten years of government by a cardinal-minister before Louis XIV's declaration of personal rule in 1661. This has assumed enormous significance for historians many of whom see it as an important period of transition. Ten major European archives have been consulted to build a detailed picture of the impact of Condé's exile upon politics within France and the war being fought in the Flanders theatre. The cardinal's regime existed throughout the 1650's in an environment of acute uncertainty and instability whilst it was by no means clear that the war with Spain was a demonstration of an 'ascendant' France dealing the death blows to a 'declining' Spain. By raising questions about France's 'rise' to European supremacy and the internal stability of Mazarin's regime the thesis rejects the straightforward terms in which this period has been treated. In particular, using the example of Condé and placing his exile and Mazarin's regime in the context of aristocratic politics, it demonstrates that there were no indications that grandee power was in decline. Indeed, the thesis argues that the power of the grands as a crucial element in the power structure of Ancien Regime France, was set to continue into the next century.
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Jensen, Max. "Magma Storage of the Alkaline Tejeda Cone Sheet Swarm, Gran Canaria, Spain". Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-296210.
Testo completoAbstract (sommario):
Volcanoes with alkaline differentiated magma belong to the more explosive and destructive types, but knowledge about these systems is often limited. Unravelling the position and conditions in the source magma chamber systems that feed volcanism at the surface is vital to understand these systems better. Due to deep erosion and barren grounds the oceanic island of Gran Canaria, Spain, provides a natural laboratory to study unique chemical and structural volcanic features of alkaline volcanism. The centre of Gran Canaria is made up of the Miocene Tejeda intrusive complex including a cone-sheet swarm and shallow alkaline differentiated plutonic rocks that form the closing phase of the Miocene activity pulse on Gran Canaria. Cone-sheets and other high-level plutonic rocks can give important insights into the interior of a volcano, such as depth and geometry of the magma supply reservoir, and thus provide vital data for the interpretation of active volcanoes in the Canary Islands and beyond. This work uses the clinopyroxene-melt thermobarometric methodology by Putirka (2008) and Masotta et al. (2013), the latter being a re-calibration of the first making it specific to alkaline differentiated magmas, to further constrain the depth of mineral. Geochemical analysis was preformed with electron microprobe (EMPA) at Uppsala University to determine mineral compositions and to extend the dataset, chemical data from the extensive work by Schirnick (1996) was also utilised. When the calculated pressure from the method of Masotta et al. (2013), was converted to the depth, the results from syenite samples show that crystallization of clinopyroxene occurred at depths of ~ 4 km (100 MPa) to ~ 15 km (400 MPa), with the highest concentration between ~ 7 km (200 MPa) and ~ 11 km (300 MPa). The results indicates that crystallization took place through the pressure range equivalent to crustal levels and possibly reaching as far down as MOHO depth, with temperature estimates calculated to about 860 to 960 °C. After combining the thermobarometric results with other evidence of magmatic processes, from this work and previous publications, the magma system expresses characteristics of fractional crystallization trends and simultaneously evidence of magma mixing, small-scale convection, and magma contamination. To explain these contradictory features, this work promotes a network of interconnected magma chambers that allows for magma stagnation and evolution at different levels. The results have thus contributed to further constrain the depth of which the cone-sheet swarm originated from on Gran Canaria, Spain.Vulkaniska system av den typ studerade i detta arbete tillhör de mer explosiva och destruktiva typer avsystem på jorden, men kunskapen om dem är begränsad. En viktig komponent som krävs för att bättreförstå dessa system är att utröna tryck och temperaturförhållanden i magmakammarna som livnärvulkanismen vid ytan. På grund av djup erosion och karg mark så fungerar ön Gran Canaria(Kanarieöarna, Spanien) som ett naturligt laboratorium för att studera både kemiska och strukturellaegenskaper. Den centrala delen av Gran Canaria består till stor del av det så kallade Tejeda intrusivakomplexet, vilket inkluderar en inverterad kon-intrusionssvärm samt djupbergarten syenit somtillsammans representerar den avslutande fasen av magmatisk aktivitet under epoken Miocen på ön.Inverterade kon-intrusioner kan ge viktiga insikter i det inre av en vulkan, såsom magmakammarensdjup, och därmed ge viktig data för tolkningen av aktiva vulkaner på Kanarieöarna och liknandeplatser.I detta arbete beräknades tryck och temperaturförhållanden utifrån kemin hos mineraletklinopyroxen och dess ursprungliga smälta. Detta gjordes med en metodik av Putirka (2008) samt enav Masotta et al. (2013) för att ytterligare begränsa djupet av mineraltillväxt. Geokemiskanalysutfördes vid Uppsala universitet med elektronmikrosond (EMPA) av insamlade stenprover för attbestämma de kemiska sammansättningarna som sedan användes i beräkningarna. Även kemiska datafrån omfattande arbete av Schirnick (1996) användes för att komplettera datasetet som anskaffadesunder detta arbete.När beräknat tryck från metoden av Masotta et al. (2013) omvandlats till djup, visar resultaten påatt kristallisation av klinopyroxen skedde på ca. 4 km (100 MPa) till ca. 15 km (400 MPa) djup, ochmed högst koncentration mellan ~ 7 km (200 MPa) och ~ 11 km (300 MPa) djup. Resultaten indikeraratt kristallisation skedde i tryckområdet motsvarande jordskorpans nivåer och möjligen nådde så långtner som till manteln, med temperaturer mellan ca 860 till 960 °C. Efter att ha kombinerat dessaresultat med andra bevis för aktiva magmatiska processer, från detta arbete och tidigare publikationer,uttrycker det magma systemet egenskaper som fraktionerad kristallisations trender och samtidigttecken på magma blandning, småskalig konvektion, och förorening av magma från jordskorpan. Föratt förklara dessa motstridiga egenskaper, främjar detta arbete ett nätverk av flera sammankopplademagmakammare som möjliggör magmatisk stagnation och utveckling på olika nivåer. Resultaten harsåledes bidragit till att ytterligare begränsa från vilket djup de inverterade kon-intrusionernahärstammar från Gran Canaria, Spanien.
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Soulodre-La, France Renée. "An ambivalent embrace region and reform in New Granada : the case of Tolima Grande /". Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 1999. http://wwwlib.umi.com/cr/ucsd/fullcit?p9917957.
Testo completoLibri sul tema "Grand spin"
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Parker, Geoffrey. The grand strategy of Philip II. New Haven [Conn.]: Yale University Press, 1998.
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Andres, Stefan Paul. El Greco paints the Grand Inquisitor. Austin, Tex: Dimension Press, 1989.
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1957-, Rekalde Anjel, a cura di. 11 mars, le grand mensonge. Bayonne: Gatuzain, 2004.
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Martín de Pozuelo, Eduardo, 1952-, a cura di. El experimento Barcelona: La conspiración italiana que acabó con el Liceo y La Fenice. Barcelona: Planeta, 2011.
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Bureau, Jérôme. Le grand livre des Jeux olympiques, Barcelone 1992. [Paris]: Calmann-Lévy, 1992.
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Allen, Paul C. Philip III and the Pax Hispanica, 1598-1621: The failure of grand strategy. New Haven: Yale University Press, 2000.
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Boeri, Giancarlo. Los tercios de Carlos II durante la Guerra de los Nueve Años, 1689-1697. Leganes, Madrid: La Espada y La Pluma., 2005.
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Mirecki Quintero, José Luis de, 1958- e Palau Cuñat José 1960-, a cura di. Los tercios de Carlos II durante la Guerra de los Nueve Años, 1689-1697. Leganes, Madrid: La Espada y La Pluma., 2005.
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Rapetto, Umberto. L'atlante delle spie: Dall'antichità al Grande gioco a oggi. Milano: Biblioteca universale Rizzoli, 2002.
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Bernanos, Georges. Les grands cimetières sous la lune. Paris: Plon, 1988.
Cerca il testo completoCapitoli di libri sul tema "Grand spin"
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Chung, Edwin C. Y. "The Design Spine: The Core Design Modules Behind Taylor’s School of Engineering Project-Based Learning". In Engineering Grand Challenges in Scholar Programs, 17–31. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-3579-2_2.
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Tang, Wan Sonya. "From Photography to Forensics: Technology, Modernity, and the Internationalization of Spanish History in Gran Hotel". In Televising Restoration Spain, 93–115. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-96196-5_5.
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Allés-Torrent, Susanna. "Tratados aparte, Collective Biographies in Fifteenth-Century Spain". In Église(s) et grands hommes, entre Renaissance et réformes, 191–222. Rome: Publications de l’École française de Rome, 2024. http://dx.doi.org/10.4000/11uqk.
Testo completoAbstract (sommario):
This contribution focuses on two collective biographies written in fifteenth-century Spain: Generaciones y sembanzas, drafted by Fernán Pérez de Guzmán around 1450, and Claros varones de Castilla, published by Fernando del Puglar in 1486. Both collections gathered the lives of kings, noblemen, knights, and prelates contemporary to their authors. This chapter intends to comparatively examine these texts regarding the evolution of religious portraits. First, I offer a historical contextualization and some formal considerations about both collections, which include the historiographical methodology used by both authors, their literary models, as well as remarks about narrative structure, system of values, and rhetorical tone. Then, I analyze patterns used to construct these religious profiles and the reasons why they are used to describe these illustrious men. This chapter interrogates how and why biographical narratives for Castilian religious subjects were reported, justified, fashioned, and imagined in particular ways.
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Segura, J. M., J. R. Calvo, M. C. Navarro, M. Torres, M. López, A. López, J. C. Orengo et al. "Tobacco use among adolescents aged 10–16 in Gran Canaria, Canary Islands, Spain". In Tobacco: The Growing Epidemic, 263–64. London: Springer London, 2000. http://dx.doi.org/10.1007/978-1-4471-0769-9_107.
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Petrevska Nechkoska, Renata, Antonia Caro Gonzalez, Alberto Bertello, Simona Grande, Marc Schmüser, Nataliia Rzhevska, Yulia Matskevich et al. "Multi-Vortex Tornado Blueprint for Disruptive Global Co-Creation (Inspired by EUvsVirus)". In Contributions to Management Science, 307–62. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-11065-8_11.
Testo completoAbstract (sommario):
AbstractSince its burst in early 2020, the Covid-19 pandemic has deeply affected every aspect of daily life, from international trade and travelling to restrictions on an individual level, becoming a complex multi-level and highly multi-faceted problem. Due to its overarching influence and deep impact, it can be seen as one of the most disruptive Grand Challenges of our time. Different from most other lasting Grand Challenges, such as Climate Change, the pandemic exerted its influence with little ramp-up, rapidly transforming health and health systems, human lives, goods and economic flows, decision-making mechanisms, research and innovation, and many other aspects of life in a very short span of time.Grand Challenges require extraordinary efforts from society as a whole since they need holistic, effective, collaborative endeavours to solve them. One such unique orchestrated effort can be observed in the subsequent series of virtual massive EUvsVirus (https://www.euvsvirus.org/) events and committed collaborations (‘hackathon’, ‘matchathon’, ‘launchathon’, ‘community’, ‘EIC Covid platform’, and the unparalleled ‘Academia Diffusion Experiment’ [ADE], analysed in chapter “Academia Diffusion Experiment: Trailblazing the Emergence from Co-Creation” of this book).While this chapter explains ‘what’ has been produced with the ADE, inspired by the EUvsVirus phenomenon, the ADE chapter describes ‘how’ it has been done. Both are extremely unique in terms of content, procedure, motivation, collaboration, effects—and they attempt to trailblaze at highest level co-creation, co-evolution, and co-dreaming. Hence, situated as the last chapters of this book.This chapter will shed light on the EUvsVirus events, where over 30,000 individuals from 40 countries came together and addressed the complexity of this massive challenge in a pioneering and groundbreaking way. The chapter is focused on analysing the EUvsVirus hackathon (alongside its mentioned unique spillovers) as a tool, method, and process capable of channelling and activating individuals’ and institutions’ concerns, wills, and commitments into a unique orchestrated open, collaborative response to an urgent Grand Challenge, the pandemic. We are producing a multi-vortex tornado model, resembling the EUvsVirus phenomenon, its components, mechanisms, behaviour and how to replicate it to achieve such disruptive, global organisational effort of co-creation. Especially, the emergence of such collaboration in the face of such urgency leads to the assumption that there are crucial lessons to be learned from this endeavour, quite fittingly encapsulated by these words:‘We are learningThat though we weren't ready for this,We have been readied by it’.Amanda Gorman’s New Year poem (https://amandagormanbooks.com/#the-hill-we-climb-and-other-poems or https://edition.cnn.com/videos/tv/2022/01/06/exp-amanda-gorman-nye-poem.cnn)
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Temiño, Jorge Yepes, Nieves Sánchez, Martín Jesús Rodríguez-Peces, Inés Galindo e Rodrigo del Potro. "Geomorphologic Evidences of Great Flank Collapses in the Northwest of Gran Canaria (Canary Islands, Spain)". In Landslide Science and Practice, 73–81. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-31313-4_10.
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Ribeiro, Claudia M. F. A., Fellipe A. Aleixo e Marília A. Freire. "Driving Academic Spin-off by Software Development Process: A Case Study in Federal Institute of Rio Grande do Norte - Brazil". In Product-Focused Software Process Improvement, 636–39. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-49094-6_51.
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Rodríguez-Peces, Martín Jesús, Jorge Yepes e Moisés Martín-Betancor. "Stability Analysis of Potential Rock Slides in El Rincón Cliff (GC-2 Highway, Gran Canaria, Spain)". In Advancing Culture of Living with Landslides, 329–34. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-53498-5_37.
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Rodriguez-Galiano, Víctor F., e Mario Chica-Olmo. "Analysis Of The Parametrization Needs Of Different Land Cover Classifiers: The Case Study Of Granda Province (Spain)". In Lecture Notes in Earth System Sciences, 123–26. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-32408-6_30.
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Rodríguez-Peces, Martín Jesús, Jorge Yepes Temiño e Esther Martín-Nicolau. "Geotechnical Features of the Volcanic Rocks Related to the Arteara Rock Avalanche in Gran Canaria (Canary Islands, Spain)". In Landslide Science and Practice, 111–17. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-31310-3_16.
Testo completoAtti di convegni sul tema "Grand spin"
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Yosoi, M., H. Akimune, I. Daito, M. Fujiwara, S. Hirata, T. Inomata, O. Kamigaito et al. "Focal plane polarimeter for the grand raiden at RCNP". In The 11th International symposium on high energy spin physics. AIP, 1995. http://dx.doi.org/10.1063/1.48850.
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Petajan, Eric D., e John Mailhot. "Grand Alliance HDTV system". In IS&T/SPIE 1994 International Symposium on Electronic Imaging: Science and Technology, a cura di Majid Rabbani e Robert J. Safranek. SPIE, 1994. http://dx.doi.org/10.1117/12.173918.
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Hambali, A., Z. Zarul, M. Noordiana, M. Karim e Gunawarman. "Development of conceptual spin grind dryer design using integrated approach". In INTERNATIONAL CONFERENCE ON MECHANICAL ENGINEERING FOR EMERGING TECHNOLOGIES (ICOMEET 2021). AIP Publishing, 2023. http://dx.doi.org/10.1063/5.0117023.
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Dillard, Joshua, Uzma Amir, Pawan Tyagi e Vincent Lamberti. "Structural Stability of Magnetic Tunnel Junction Based Molecular Spintronics Devices (MTJMSD)". In ASME 2020 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/imece2020-24134.
Testo completoAbstract (sommario):
Abstract Harnessing the exotic properties of molecular level nanostructures to produce novel sensors, metamaterials, and futuristic computer devices can be technologically transformative. In addition, connecting the molecular nanostructures to ferromagnetic electrodes bring the unprecedented opportunity of making spin property based molecular devices. We have demonstrated that magnetic tunnel junction based molecular spintronics device (MTJMSD) approach to address numerous technological hurdles that have been inhibiting this field for decades (P. Tyagi, J. Mater. Chem., Vol. 21, 4733). MTJMSD approach is based on producing a capacitor like a testbed where two metal electrodes are separated by an ultrathin insulator and subsequently bridging the molecule nanostructure across the insulator to transform a capacitor into a molecular device. Our prior work showed that MTJMSDs produced extremely intriguing phenomenon such as room temperature current suppression by six orders, spin photovoltaic effect, and evolution of new forms of magnetic metamaterials arising due to the interaction of the magnetic a molecule with two ferromagnetic thin films. However, making robust and reproducible electrical connections with exotic molecules with ferromagnetic electrodes is full of challenges and requires attention to MTJMSD structural stability. This paper focuses on MTJMSD stability by describing the overall fabrication protocol and the associated potential threat to reliability. MTJMSD is based on microfabrication methods such as (a) photolithography for patterning the ferromagnetic electrodes, (b) sputtering of metallic thin films and insulator, and (c) at the end electrochemical process for bridging the molecules between two ferromagnetic films separated by ∼ 2nm insulating gap. For the successful MTJMSD fabrication, the selection of ferromagnetic metal electrodes and thickness was found to be a deterministic factor in designing the photolithography, thin film deposition strategy, and molecular bridging process. We mainly used isotropic NiFe soft magnetic material and anisotropic Cobalt (Co) with significant magnetic hardness. We found Co was susceptible to chemical etching when directly exposed to photoresist developer and aged molecular solution. However, NiFe was very stable against the chemicals we used in the MTJMSD fabrication. As compared to NiFe, the Co films with > 10nm thickness were susceptible to mechanical stress-induced nanoscale deformities. However, cobalt was essential to produce (a) low leakage current before transforming the capacitor from the magnetic tunnel junction into molecular devices and (b) tailoring the magnetic properties of the ferromagnetic electrodes. This paper describes our overall MTJMSD fabrication scheme and process optimization to overcome various challenges to produce stable and reliable MTJMSDs. We also discuss the role of mechanical stresses arising during the sputtering of the ultrathin insulator and how to overcome that challenge by optimizing the insulator growth process. This paper will benefit researchers striving to make nanoscale spintronics devices for solving grand challenges in developing advanced sensors, magnetic metamaterials, and computer devices.
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Wan, Tianbao. "The Key Techniques of Zhangjiajie's Grand Canyon Glass-bottom Suspension Bridge Design". In IABSE Symposium, Nantes 2018: Tomorrow’s Megastructures. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2018. http://dx.doi.org/10.2749/nantes.2018.s28-44.
Testo completoAbstract (sommario):
<p>Zhangjiajie's Grand Canyon Glass Bridge is a signature pedestrian and scenic bridge. The bridge is the spatial cable plane earth-anchored suspension with the main cable span of 430-meter-long and a stiffening box-girder span of 373-meter-long. The bridge deck is wholly constructed with transparent tempered glass panels . The lateral distance between two pylons at of the west side and the east side of the bridge is 45m and 50m respectively. This paper is intended to introduce some key techniques of the design along with the general introduction of the bridge.</p>
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Asimov, Daniel A., e Andreas Buja. "Grand tour via geodesic interpolation of 2-frames". In IS&T/SPIE 1994 International Symposium on Electronic Imaging: Science and Technology, a cura di Robert J. Moorhead II, Deborah E. Silver e Samuel P. Uselton. SPIE, 1994. http://dx.doi.org/10.1117/12.172065.
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Eikenberry, Stephen S., Steven Nicholas Raines, Richard Deno Stelter, Alan Garner, Yigit Dallilar, Kendall Ackley, John Greg Bennett et al. "MIRADAS for the Gran Telescopio Canarias". In SPIE Astronomical Telescopes + Instrumentation, a cura di Christopher J. Evans, Luc Simard e Hideki Takami. SPIE, 2016. http://dx.doi.org/10.1117/12.2232533.
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Sodickson, Daniel K., Li Feng, Florian Knoll, Martijn Cloos, Noam Ben-Eliezer, Leon Axel, Hersh Chandarana, Tobias Block e Ricardo Otazo. "The rapid imaging renaissance: sparser samples, denser dimensions, and glimmerings of a grand unified tomography". In SPIE Medical Imaging, a cura di Barjor Gimi e Robert C. Molthen. SPIE, 2015. http://dx.doi.org/10.1117/12.2085033.
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Hwang, Eui-seung, Sun-Kon Kim, Do-Young Kim e Ki-Jung Park. "Vibration Serviceability of Long Span Cable Bridges using Long-term Monitoring Data". In IABSE Congress, New York, New York 2019: The Evolving Metropolis. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2019. http://dx.doi.org/10.2749/newyork.2019.1539.
Testo completoAbstract (sommario):
<p>Along with building slender and longer span structures, vibration serviceability becomes more important considerations in bridge design and maintenance. In this study, vibration serviceability and deflection limit for long span cable bridges are investigated using long-term monitoring data such as accelerations and displacements of bridges. Exampled bridges are Yi Sun-Sin Grand Bridge (suspension bridge, main span length=1,545m) and 2<sup>nd</sup> Jindo Grand Bridge (cable stayed bridge, main span length=344m). Long-term data are analyzed and compared with various design codes, guidelines, and other research results. Probability of exceedance are calculated for each criterion. Regarding on deflection limits, Korean Bridge Design Code (Limit State Design) specifies L/400 and L/350 for cable stayed and suspension bridges, respectively. Saadeghvaziri suggested deflection limit based on natural frequency, acceleration limit of 0.5 m/s² and vehicle speed. Various human comfort criteria on vibration are also applied including ISO standards. The results of this study are expected to be useful reference for the design, the proper planning and deflection review of the long span cable bridges around the world. Further researches are required to find the optimum deflection or vibration criteria for long span bridge and their effects on bridge clearance and elevation.</p>
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Geyl, Roland, Marc Cayrel e Michel Tarreau. "Gran Telescopio Canarias optics manufacture: final report". In SPIE Astronomical Telescopes + Instrumentation, a cura di Eli Atad-Ettedgui, Joseph Antebi e Dietrich Lemke. SPIE, 2006. http://dx.doi.org/10.1117/12.674333.
Testo completoRapporti di organizzazioni sul tema "Grand spin"
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Krisch, A. D. International Symposia on High Energy Spin Physics. Final report on project grant. Office of Scientific and Technical Information (OSTI), aprile 2001. http://dx.doi.org/10.2172/771273.
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Aguinis, Marcos, Salomón Lerner e Darío Ruíz Gómez. The Essential Role of Ethics in the Developmen of Latin America: Convictions That Sabotage Progress: The Difficulty of Telling the Truth. Inter-American Development Bank, aprile 2004. http://dx.doi.org/10.18235/0007951.
Testo completoAbstract (sommario):
Salomón Lerner (1944-), Peruvian philosopher, Rector of Pontifical Catholic University of Peru (1994-2004), Angel Escobar Jurado National Human Rights Award (2003). Marcos Aguinis (1935-), Argentine physician, former Minister of Culture in Argentina, Planeta Prize (Spain), Grand Prize of Honor by the Argentine Society of Writers. Darío Ruiz Gómez (1935-), Colombian art and literary critic, former Professor of Architecture in Medellín, published four books of poetry and five books of short stories.
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Naranjo-Mayor, Yurena, Amelia Rodríguez Rodríguez e Isabel Francisco Ortega. The quern quarry of La Calera (Agaete, Gran Canaria, Spain): Working volcanic tuff with stone tools. Edicions de la Universitat de Lleida, 2019. http://dx.doi.org/10.21001/rap.2019.extra-4.7.
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Donal Day e Tingjun Liu. Final performance report Grant no. DE-FG05-86ER40261 [Measurements of spin structure functions g{sub 1}{sup p} and g{sub 1}{sup d}]. Office of Scientific and Technical Information (OSTI), gennaio 1996. http://dx.doi.org/10.2172/764053.
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Buckland, Leonora, Deborah Gold, Lisa Hehenberger e Laura Reijnders. Walking the tightrope: How foundations can find a balance between learning and accountability lenses. Esade Cnter for Social Impact, marzo 2023. http://dx.doi.org/10.56269/lb20230307.
Testo completoAbstract (sommario):
Over the last two years, the Esade Center for Social Impact, which is part of Esade Business School in Spain, and its partner BBK, a banking foundation in Bilbao, have been at the center of a web of committed European foundation professionals sharing their thoughts, learnings, practices, frustrations, and eureka moments related to impact measurement and management (IMM). This paper is not a practical guide to Impact Measurement and Management (IMM) – we believe that there are other publications which may help with implementation. Rather, it recounts how foundations at different stages of development and with a range of profiles (corporate, family, operating, and grant-making) are going about IMM on a day-to-day basis and grappling with some of the challenges and philosophical issues arising. For the impact geeks, this will no doubt be interesting grist for the mill. For those not so deep into this space, it might provide an overview of where foundations are in Europe and how they are focusing their efforts on IMM. Our aim is that by synthesizing and sharing what we have heard in this safe space we can inform and inspire others.
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Alonso, María, Eduardo Gutiérrez, Eduardo Moral-Benito, Diana Posada e Patrocinio Tello-Casas. Un repaso de las diversas iniciativas desplegadas a nivel nacional e internacional para hacer frente a los riesgos de exclusión financiera. Madrid: Banco de España, marzo 2023. http://dx.doi.org/10.53479/29772.
Testo completoAbstract (sommario):
Las dificultades en el acceso a los servicios bancarios por parte de determinados grupos de población, especialmente aquellos residentes en zonas rurales y/o de edad avanzada, suponen una fuente de vulnerabilidad ante el riesgo de exclusión financiera de dichos colectivos. Este trabajo ofrece un resumen de las actuaciones desplegadas al objeto de mitigar dichos riesgos en los diferentes países europeos, con especial énfasis en el caso español. Si bien estas iniciativas son de naturaleza diversa y dependen de factores idiosincráticos de cada país, una revisión sistemática de las mismas permite extraer las siguientes conclusiones principales desde una perspectiva comparada. Desde el ámbito de la iniciativa privada, cabe destacar el despliegue en varios países europeos de redes de puntos de acceso al efectivo compartidas por diferentes entidades bancarias, si bien su implantación es, por el momento, relativamente menor en el caso español. Respecto a las iniciativas de colaboración público-privada, tanto en España como en el resto de países europeos, destaca la utilización de los acuerdos entre las entidades bancarias y las empresas de correos, que cuentan con una gran capilaridad en su red de oficinas. Desde el ámbito público, las actuaciones más comúnmente utilizadas se refieren a ayudas para instalar cajeros automáticos en zonas rurales. Por su parte, la regulación de los niveles mínimos de provisión de puntos de acceso al efectivo mediante la acción legislativa solo está vigente en el caso de Suecia, donde el uso de efectivo es tan minoritario que su potencial desaparición supone una amenaza sobre la viabilidad de la infraestructura de efectivo. Difficulties in accessing banking services by certain population groups, in particular those living in rural areas and/or the elderly, are a source of potential vulnerability with regard to the risk of financial exclusion of these cohorts. This paper summarises the actions deployed, by public and private institutions, in order to mitigate these risks in European countries, with special emphasis on Spain. Although these initiatives are diverse in nature and depend on idiosyncratic factors in each country, a systematic review allows the following conclusions to be drawn from a comparative perspective. First, it is worth noting the deployment in several European countries of networks of cash access points shared by different banks, although their implementation is, for the time being, relatively lower in Spain. Second, regarding public-private collaboration initiatives, both in Spain and in other European countries, the use of agreements between banks and post offices, which have well-distributed networks of offices, stands out. Third, the most common public sector initiatives consist of aid for the instalment of ATMs in rural areas. However, legislation regulating minimum provision of cash access points is only in force in Sweden, where the use of cash is so low that its potential disappearance poses a threat to the viability of cash infrastructure.
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Kerber, Steve, Daniel Madrzykowski, James Dalton e Robert Backstrom. Improving Fire Safety by Understanding the Fire Performance of Engineered Floor Systems and Providing the Fire Service with Information for Tactical Decision Making. UL Firefighter Safety Research Institute, marzo 2012. http://dx.doi.org/10.54206/102376/zcoq6988.
Testo completoAbstract (sommario):
This research project was a collaboration of several research organizations, product manufacturers and fire service representatives to examine hazards associated with residential flooring systems to improve firefighter safety. Funding for this project was provided through the National Institute of Standards and Technology’s American Recovery and Reinvestment Act Grant Program. The main objective of this study was to improve firefighter safety by increasing the level of knowledge on the response of residential flooring systems to fire. Several types (or series) of experiments were conducted and analyzed to expand the body of knowledge on the impact of fire on residential flooring systems. The results of the study have been prepared to provide tactical considerations for the fire service to enable improved decision making on the fire scene. Experiments were conducted to examine several types of floor joists including, dimensional lumber, engineered I-joists, metal plate connected wood trusses, steel C-joists, castellated I-joists and hybrid trusses. Experiments were performed at multiple scales to examine single floor system joists in a laboratory up through a full floor system in an acquired structure. Applied load, ventilation, fuel load, span and protection methods were altered to provide important information about the impact of these variables to structural stability and firefighter safety. There are several tactical considerations that result from this research that firefighters can use immediately to improve their understanding, safety and decision making when sizing up a fire in a one or two family home. This report summarizes the results from each of the experimental series and provides discussion and conclusions of the results.
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Taucher, Jan, e Markus Schartau. Report on parameterizing seasonal response patterns in primary- and net community production to ocean alkalinization. OceanNETs, novembre 2021. http://dx.doi.org/10.3289/oceannets_d5.2.
Testo completoAbstract (sommario):
We applied a 1-D plankton ecosystem-biogeochemical model to assess the impacts of ocean alkalinity enhancement (OAE) on seasonal changes in biogeochemistry and plankton dynamics. Depending on deployment scenarios, OAE should theoretically have variable effects on pH and seawater pCO2, which might in turn affect (a) plankton growth conditions and (b) the efficiency of carbon dioxide removal (CDR) via OAE. Thus, a major focus of our work is how different magnitudes and temporal frequencies of OAE might affect seasonal response patterns of net primary productivity (NPP), ecosystem functioning and biogeochemical cycling. With our study we aimed at identifying a parameterization of how magnitude and frequency of OAE affect net growth rates, so that these effects could be employed for Earth System Modell applications. So far we learned that a meaningful response parameterization has to resolve positive and negative anomalies that covary with temporal shifts. As to the intricacy of the response patterns, the derivation of such parameterization is work in progress. However, our study readily provides valuable insights to how OAE can alter plankton dynamics and biogeochemistry. Our modelling study first focuses at a local site where time series data are available (European Station for Time series in the Ocean Canary Islands ESTOC), including measurements of pH, concentrations of total alkalinity, dissolved inorganic carbon (DIC), chlorophyll-a and dissolved inorganic nitrogen (DIN). These observational data were made available by Andres Cianca (personal communication, PLOCAN, Spain), Melchor Gonzalez and Magdalena Santana Casiano (personal communication, Universidad de Las Palmas de Gran Canaria). The choice of this location was underpinned by the fact that the first OAE mesocosm experiment was conducted on the Canary Island Gran Canaria, which will facilitate synthesizing our modelling approach with experimental findings. For our simulations at the ESTOC site in the Subtropical North Atlantic we found distinct, non-linear responses of NPP to different temporal modes of alkalinity deployment. In particular, phytoplankton bloom patterns displayed pronounced temporal phase shifts and changes in their amplitude. Notably, our simulations suggest that OAE can have a slightly stimulating effect on NPP, which is however variable, depending on the magnitude of OAE and the temporal mode of alkalinity addition. Furthermore, we find that increasing alkalinity perturbations can lead to a shift in phytoplankton community composition (towards coccolithophores), which even persists after OAE has stopped. In terms of CDR, we found that a decrease in efficiency with increasing magnitude of alkalinity addition, as well as substantial differences related to the timing of addition. Altogether, our results suggest that annual OAE during the right season (i.e. physical and biological conditions), could be a reasonable compromise in terms of logistical feasibility, efficiency of CDR and side-effects on marine biota. With respect to transferability to global models, the complex, non-linear responses of biological processes to OAE identified in our simulations do not allow for simple parameterizations that can easily adapted. Dedicated future work is required to transfer the observed responses at small spatiotemporal scales to the coarser resolution of global models.
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Eparkhina, Dina. EuroSea Legacy Report. EuroSea, 2023. http://dx.doi.org/10.3289/eurosea_d8.12.
Testo completoAbstract (sommario):
EuroSea is a holistic large-scale project encompassing the full value chain of marine knowledge, from observations to modelling and forecasting and to user-focused services. This report summarizes the legacy of EuroSea as planned and measured through a dedicated impact monitoring protocol, a holistic assessment of the project's successes in advancing and integrating European ocean observing and forecasting systems. Since its start, EuroSea has been analysing how well the project progresses towards the identified areas of impact. Impact assessment is not performance evaluation. These terms overlap but are distinct: performance relates to the efficient use of resources; impact relates to the transformative effect on the users. The EuroSea legacy report is presented through an aggregation and analysis of the EuroSea work towards achieving its impacts. Overall, over 100 impacts have been identified and presented on the website and in a stand-alone impact report. The legacy report sheds light on 32 most powerful impacts (four impacts in each of the eight EuroSea impact areas). EuroSea Impact Areas: 1. Strengthen the European Ocean Observing System (EOOS), support the Global Ocean Observing System (GOOS) and the GOOS Regional Alliances; 2. Increase ocean data sharing and integration; 3. Deliver improved climate change predictions; 4. Build capacity, internally in EuroSea and externally with EuroSea users, in a range of key areas; 5. Develop innovations, including exploitation of novel ideas or concepts; shorten the time span between research and innovation and foster economic value in the blue economy; 6. Facilitate methodologies, best practices, and knowledge transfer in ocean observing and forecasting; 7. Contribute to policy making in research, innovation, and technology; 8. Raise awareness of the need for a fit for purpose, sustained, observing and forecasting system in Europe. Ocean observing and forecasting is a complex activity brining about a variety of technologies, human expertise, in water and remote sensing measurements, high-volume computing and artificial intelligence, and a high degree of governance and coordination. Determining an impact on a user type or an area, therefore, requires a holistic assessment and a clear strategic overview. The EuroSea impact monitoring protocol has been the first known such attempt in a European ocean observing and forecasting project. The project’s progress has been followed according to the identified impact areas, through consortium workshops, stakeholder webinars, tracking, and reporting. At the end of EuroSea, we are able to demonstrate how well we have responded to the European policy drivers set out in the funding call and the grant agreement of our project, signed between the European Commission and 53 organizations, members of the EuroSea consortium. The project's impact is diverse, spanning areas from strengthening ocean observing governance to contributing to policymaking or boosting ocean research, innovation, and technology. Each impact area underscores EuroSea's commitment to a sustainable and informed approach to ocean observing and forecasting for enhanced marine knowledge and science-based sustainable blue economy and policies. (EuroSea Deliverable, D8.12)
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Inter-American Development Bank Annual Report 2008: The Year in Review. Inter-American Development Bank, febbraio 2009. http://dx.doi.org/10.18235/0005699.
Testo completoAbstract (sommario):
This Annual Report 2008: A Year in Review contains a review of the Bank's operations in 2008, loans, guarantees and grants, and in a separate volume, Management's Discussion and Analysis: Ordinary Capital; the financial statements of the Bank; and general appendices. The IDB's response to the effects of the global financial, economic, and social crisis on our region has been swift and sure, as they provided flexibility to those most in need (Haiti, for example), so that they could provide subsidies to producers and consumers whose credit had disappeared and whose families were at risk. The operational program benefited from the approval of the second phase of the Integrated Business Plan for Private Sector and Non-Sovereign-Guaranteed Operations, a new framework for technical assistance and three new thematic funds: AquaFund, the Aid for Trade Strategic Thematic Fund and the Cooperation Fund for Water and Sanitation, the latter a large-scale, grant-based initiative of the Government of Spain. Among the various initiatives the IDB undertook in response to the export dimension of the crisis was a rapid expansion of its successful Trade Finance Facilitation Program, through which the Bank provides guarantees to regional commercial lending institutions' financing of international trade transactions.