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Literatura académica sobre el tema "Phasal structure"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 13 de febrero de 2022

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Artículos de revistas sobre el tema "Phasal structure"

Kanijo, Ponsiano Sawaka. "The robustness of Botne and Kershner aspectual classes in Nyamwezi". STUF - Language Typology and Universals 74, n.º 3-4 (1 de septiembre de 2021): 507–32. http://dx.doi.org/10.1515/stuf-2021-1043.

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Abstract The framework proposed in the works of Robert Botne and Tiffany Kershner has been widely used to classify verbs in Bantu languages. In this framework, verbs encode events which consist of maximally three phases: onset (represents the coming-to-be phase), nucleus (represents the state change itself; can also be represented as a coming-to-be phase if the verb lacks an onset) and coda (represents the result-state phase). Hence, verbs are defined depending on which phases they encode and whether particular phases are punctual or durative. The phasal structures of verbs can be diagnosed using various tests. The application of these diagnostics to Nyamwezi (a Tanzanian Bantu language, [nym]) produces three significant variations. First, Botne and Kershner’s conception of statives as events with no phasal structure is not tenable in Nyamwezi. The tests show that in Nyamwezi, statives have structure. Second, some classes described in Botne and Kershner do not occur in Nyamwezi. Third, in Botne and Kershner’s works, classes are described depending on whether particular phases are punctual or durative. In addition to this characteristic, the classes in Nyamwezi can also be described depending on whether particular phases are dynamic or static, and whether the result state is permanent or reversible.

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Crane, Thera Marie y Bastian Persohn. "What’s in a Bantu verb? Actionality in Bantu languages". Linguistic Typology 23, n.º 2 (26 de julio de 2019): 303–45. http://dx.doi.org/10.1515/lingty-2019-0017.

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Abstract The lexical and phrasal dimensions of aspect and their interactions with morphosyntactic aspectual operators have proved difficult to model in Bantu languages. Bantu actional types do not map neatly onto commonly accepted categorizations of actionality, although these are frequently assumed to be universal and based on real-world event typologies. In this paper, we describe important characteristics and major actional distinctions attested across Bantu languages. These, we argue, include complex lexicalizations consisting of a coming-to-be phase, the ensuing state change, and the resultant state; sub-distinctions of coming-to-be phases, and other issues of phasal quality. Despite these fine-grained distinctions in phasal structure and quality, evidence for a principled distinction between activity- and accomplishment-like predicates is mixed. We review the current state of evidence for these characteristics of Bantu actionality and sketch methodological directions for future research.

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Young, Lynne. "Static and Dynamic Discourse Structure; an Analysis within the Framework of Communication Linguistics". ITL - International Journal of Applied Linguistics 72 (1 de enero de 1986): 27–51. http://dx.doi.org/10.1075/itl.72.02you.

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The purpose of the paper is to demonstrate the influence of situational factors on codal selections. Also suggested is a model for the analysis of spoken and written discourse. The paper begins with a brief description of the framework for the analysis of a university lecture. It then illustrates two different ways of describing the structure of discourse. Situational and codal features of the static structure are discussed first; these are followed by a phasal analysis of the dynamic structure. The paper concludes with a brief look at some pedagogical implications of the approach to discourse analysis.

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Bylund, Emanuel. "Procesos de conceptualización de eventos en español y en sueco". Revue Romane / Langue et littérature. International Journal of Romance Languages and Literatures 43, n.º 1 (7 de abril de 2008): 1–24. http://dx.doi.org/10.1075/rro.43.1.02byl.

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This study examines the relationship between grammaticised aspect (GA) and the information structure of events in discourse. The aim is to test the hypothesis about the influence of grammaticised aspect on event conceptualization processes. The data studied consist of narratives by speakers of Swedish (−GA) and speakers of Spanish (+GA). The segmentation, selection and perspectivation of events carried out by these groups were studied through audiovisual tests. Analyses of the narratives reveal cross-linguistic differences as to information structure: the speakers of Swedish prefer holistic event presentations and verbalize a high number of closed events, whereas the speakers of Spanish show a greater sensitivity towards the phasal structure of the events, manifested in a finer eventive resolution focusing on progressive aspect.

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Ivanauskas, Algimantas, Remigijus Ivanauskas y Ingrida Ancutiene. "Effect of In-Incorporation and Annealing on CuxSe Thin Films". Materials 14, n.º 14 (8 de julio de 2021): 3810. http://dx.doi.org/10.3390/ma14143810.

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A study of indium-incorporated copper selenide thin-film deposition on a glass substrate using the successive ionic adsorption and reaction method (SILAR) and the resulting properties is presented. The films were formed using these steps: selenization in the solution of diseleniumtetrathionate acid, treatment with copper(II/I) ions, incorporation of indium(III), and annealing in an inert nitrogen atmosphere. The elemental and phasal composition, as well as the morphological and optical properties of obtained films were determined. X-ray diffraction data showed a mixture of various compounds: Se, Cu0.87Se, In2Se3, and CuInSe2. The obtained films had a dendritic structure, agglomerated and not well-defined grains, and a film thickness of ~90 μm. The band gap values of copper selenide were 1.28–1.30 eV and increased after indium-incorporation and annealing. The optical properties of the formed films correspond to the optical properties of copper selenide and indium selenide semiconductors.

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Kiss, Katalin É. "Free Word Order, (Non)configurationality, and Phases". Linguistic Inquiry 39, n.º 3 (julio de 2008): 441–75. http://dx.doi.org/10.1162/ling.2008.39.3.441.

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The article argues that a particular implementation of phase theory makes it possible to account for seemingly contradictory facts of Hungarian that no other framework has been able to handle. Namely, (a) Hungarian word order is fixed preverbally and free postverbally. The fixed word order of a string is liberated when it is crossed by V-movement. (b) Grammatical phenomena sensitive to c-command provide evidence of both configurationality and nonconfigurationality. The proposal is based on the following assumptions: The derivation of the Hungarian sentence involves a lexical phase (PredP) and a functional phase (a TP or a FocP), both headed by the raised V. When the functional phase is constructed, the silent lower copies of the V and their projections are deleted, which results in the flattening of the phasal domain. Grammatical phenomena indicative of a hierarchical structure are interpreted on the hierarchical domain of the lexical phase, whereas those indicative of a flat structure are interpreted on the flattened domain of the functional phase. The sister constituents of the flattened domain of the functional phase can be linearized in a free order in PF.

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Vera, Gabriel Martínez. "Phases, labeling, antilocality and intonational phrases: recomplementation in Spanish". Probus 31, n.º 1 (27 de mayo de 2019): 187–231. http://dx.doi.org/10.1515/probus-2019-0002.

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Abstract This paper addresses recomplementation (i.e. double-complementizer constructions) in Spanish, comparing Latin American Spanish (LAS) and European Spanish (ES). I make the novel observation that in spite of a superficial difference whereby a lower que after a left dislocate (LD) surfaces in ES but not in LAS, LAS does have recomplementation. In fact, LAS patterns with ES in that there are two constructions in each variety, i.e. a construction in which an intonational break following the LD is present and a construction in which the break is absent. I argue that the constructions with the break differ from the constructions without it with regard to reconstruction effects, no insertion and the position of high adverbs, which arise due to a locality violation in the former but not in the latter. I propose a syntactic analysis in terms of phases and argue that the locality violation is circumvented in the constructions with no break via verb movement, which is not possible in the constructions with the break. I further propose a mapping from the syntactic structures of recomplementation into prosody that correlates with the presence/absence of the intonational break in these constructions, hence providing prosodic evidence for phasal structure more generally.

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Błaszczak, Joanna. "Clause structure, case and agreement in Polish existential, possessive and locative sentences: A phase-based account". Poznan Studies in Contemporary Linguistics 54, n.º 4 (27 de noviembre de 2018): 637–96. http://dx.doi.org/10.1515/psicl-2018-0025.

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Abstract In this paper it will be argued that the difference between existential and locative sentences is primarily structurally encoded at the vP/VP level (at the first phase of a derivation). The crucial question is which argument of the verb BE (the Location or the nominal argument (“Theme”)) is projected as the “external argument”, i.e., which argument is the subject of inner predication. In the case of existential sentences it is the Location argument which is the subject of inner predication, and in the case of locative sentences it is the nominal argument. The subject of inner predication becomes by default also the subject of outer predication, i.e., the topic of the sentence. Hence, in the case of locative sentences the nominal argument is the subject of outer predication, i.e., the topic of the sentence, and in the case of existential sentences it is the Location which becomes the topic. (Or, alternatively, the actual topic (the subject of outer predication) might be the situational/ event variable, and the Location functions as a restriction on it.) However, the actual arrangement of constituents in the sentences under discussion, as in any other Polish sentence, is determined by the pragmatic/communicative principles. Given this, it is reasonable to think that the NOM/GEN case alternation in negated existential/locative sentences is primarily a matter of syntax, and not one of information structure or scope of negation. The analysis will be modeled in accordance with the phasal model of Chomsky (2000 et seq.).

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Lemmens, Maarten y Kalyanamalini Sahoo. "Rise and be surprised: Aspectual profiling and mirativity in Odia light verb constructions". Cognitive Linguistics 30, n.º 1 (25 de febrero de 2019): 123–64. http://dx.doi.org/10.1515/cog-2017-0053.

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AbstractIn this paper, we present our Construction Grammar account of light verb constructions in the Indo-Aryan language Odia (earlier known as Oriya). These light verb constructions are asymmetric complex verb predicates that combine a main verb (MV) with a light verb (LV). While the LVs are form-identical with a lexical verb, they are “light” because they have lost their lexical content as well as their argument structure. We argue that LV constructions present a coherent system: (i) they all modulate the interpretation of the event encoded by the main verb by adding a particular aspectual (phasal) profile on the event (i.e. profiling the ONSET, DURATION or COMPLETION of the event) and (ii) some of these light verbs further add a mirative interpretation. The present paper focuses on this subset of “aspectuo-mirative LVs” which can be characterised as non-parasitic expressions of mirativity; in particular, it presents new work on the light verb -uʈh ‘-rise’ that combines a profile on ONSET with mirativity. The constructional view that we present here offers an account of light verbs that is both descriptively and theoretically innovative. Its descriptive value resides in its systematic and fine-grained corpus-based analysis of the formal and semantic features of LVs beyond what is found in the existing literature. The theoretical contribution of our paper not only resides in offering a better understanding of the status of LVs in the grammar, but by situating the semantic value of some of these in the complex category of mirativity, it offers a more unified answer of quite disparate observations in the literature. Finally, we also address the question of whether this mirative value of the aspectuo-mirative LVs is semantic or pragmatic. As we will show, such a strict dichotomy cannot be maintained, which gives further support for a constructional approach.

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Kim, Kyumin. "Oblique nominals, a verbal affix and late merge". Linguistics 58, n.º 6 (25 de noviembre de 2020): 1737–73. http://dx.doi.org/10.1515/ling-2020-0179.

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AbstractThe goal of this paper is to address the syntax of certain oblique nominals in Blackfoot (Algonquian) that are introduced by a set of verbal prefixes called linkers. In the literature, an oblique nominal introduced by a verbal affix always shows certain properties of objects, e.g., agreement. This type of affix is analyzed as forming a complex verb with the main verb via head movement, and the oblique nominal is treated as an object of the complex verb. However, this paper demonstrates that oblique nominals introduced by linkers in Blackfoot do not show certain object properties even though the linker looks like it forms a complex verb. Building on the lack of object properties, linker phrases are proposed to be adjuncts. As proposed for adjuncts generally (e.g., Stephanov, Arthur. 2001. Late adjunction and minimalist phrase structure. Syntax 4(2). 94–125), this paper proposes a late merge analysis for linker phrases. Within an Agree-based model (Chomsky, Noam. 2000. Minimalist inquiries: The framework. In Roger Martin, David Michaels & Juan Uriagereka (eds.), Step by step: Essays on minimalist syntax in honor of Howard Lasnik, 89–155. Cambridge, MA: The MIT Press, 2001. Derivation by phase. In Michael Kenstowicz (ed.), Ken Hale: A life in language, 1–52. Cambridge: The MIT Press) where the derivation proceeds by phases (Chomsky 2008), a linker phrase, as an adjunct, lacks the relevant features to participate in the derivation via Agree, and thus it merges late at the end of a given phasal derivation such as vP. When spell out applies, the linker linearizes with a [V-v] complex in the base position, i.e., vP, giving its surface appearance as a verbal affix. Under this view, a linker does not lead to formation of a complex verb as it does not undergo head movement to the verb, unlike applicative affixes, consistent with the absence of object properties.

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Tesis sobre el tema "Phasal structure"

Aleksandrova, Angelina. "Noms humains de phase : problèmes de classifications ontologiques et linguistiques". Phd thesis, Université de Strasbourg, 2013. http://tel.archives-ouvertes.fr/tel-00842220.

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Le travail de cette thèse se situe dans le domaine de la sémantique nominale et porte sur un échantillon de noms dénotant les humains (NH) pendant les différentes phases de vie : bébé, enfant, adolescent, adulte, vieillard (N-[âge]). Elle poursuit un triple objectif. D'abord, il s'agit d'offrir une description linguistique fine d'un ensemble de N-[âge] dont le fonctionnement est resté méconnu jusqu'à présent. En démontrant leur caractère hybride - les N-[âge] dénotent à la fois des propriétés référentiellement essentielles et intrinsèquement transitoires - nous mettons en évidence des paramètres inédits pour la description des NH en général. Enfin, notre thèse explore la possibilité d'un élargissement notionnel du domaine aspectuel vers la sémantique nominale en interrogeant la notion de phase et en démontrant que l'ensemble des N-[âge] bénéficie d'une structure phasale.

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Auguste, Frédéric. "Flexibilité et structure de deux phases lyotropes : phase lamellaire et phase de vésicules". Bordeaux 1, 1993. http://www.theses.fr/1993BOR10587.

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Edling, Hans Eliot. "Synthesis and Structure-Property Relationships of Polyesters Containing Rigid Aromatic Structures". Diss., Virginia Tech, 2018. http://hdl.handle.net/10919/95029.

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Polyesters are an attractive class of polymer that can be readily modified with a wide range of different comonomers, during polymerization or with melt blending, to achieve a wide variety of physical properties. This research primarily focuses on polyesters that incorporate rigid aromatic structures that have excellent potential to enhance thermal and mechanical properties. Copolyesters were prepared through melt polycondensation of diesters and diols in the presence of an exchange catalyst. Monomer incorporation was verified with nuclear magnetic resonance (NMR) and molecular weights were obtained by measuring inherent viscosity (ninh). Physical properties were assessed with thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA) and rheology. Mechanical properties were assessed with tensile and impact testing. Copolyesters of poly(ethylene terephthalate) (PET) were synthesized by substituting dimethyl terephthalate (DMT) with dimethyl 4,4'-biphenyldicarboxylate (4,4'BB) resulting in enhanced glass transition (Tg) temperatures relative to PET while affording melting temperatures (Tm) low enough to allow facile melt processing. Further modification with dimethyl isophthalate (DMI) or dimethyl 3,4'-biphenyldicarboxylate (3,4'BB) slowed crystallization sufficiently to allow biaxial orientation, leading to further studies assessing the permeability of oriented films. Novel amorphous polyesters were synthesized with 3,4'BB or 4,4'BB in combination with neopentyl glycol (NPG), 1,4-cyclohexandimethanol (CHDM) and ethylene glycol (EG). Use of multiple diols produced clear, amorphous copolyesters with Tgs as high at 129 C. A series of novel high temperature(Tm) copolyesters were synthesized from dimethyl 2,6-naphthalenedicarboxylate (DMN) and 4,4'BB combined with CHDM. Studies were performed with standard DSC and thin film calorimetry to show the convergence of multiples melting endotherms in an effort to determine their origin. Preliminary work was performed on the modification of poly(1,4-cyclohexylenedimethylene terephthalate) (PCT), poly(1,4-cyclohexylenedimethylene 2,6-naphthalate) (PCN) and poly(1,4-cyclohexylenedimethylene 4,4'-bibenzoate) (PCB) with dimethyl p-terphenyl-4,4''-dicarboxylate.
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Butler, Jonny. "Phase structure, phrase structure, and quantification". Thesis, University of York, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.415175.

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Shi, Jingming. "Ab initio prediction of crystalline phases and their electronic properties : from ambient to extreme pressures". Thesis, Lyon, 2017. http://www.theses.fr/2017LYSE1110/document.

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Dans cette thèse nous utilisons des méthodes globaux de prédiction des structures cristallographiques combinés à des techniques de grande capacité de traitement de données afin de prédire la structure cristalline de différents systèmes et dans des conditions thermodynamiques variées. Nous avons réalisé des prédictions structurales utilisant l'analyse cristalline par optimisation par essaims particuliers (CALYPSO) combinés avec la Théorie Fonctionnel de la Densité (DFT) ce qui a permis de mettre en évidence la stabilité de plusieurs composés jusqu'à la inconnus dans le digramme de phases du système Ba-Si et dans le système N-H-O. Nous avons également réalisé une étude à haute capacité de traitement de données sur un système ternaire de composition ABX2. Nous avons utilisé la Théorie Fonctionnel de la Densité combinant calculs de prototypes structuraux à partir des prédictions structurelles avec la méthode. Dans les paragraphes suivants nous résumons le contenu de différents chapitres de cette thèse. Le premier chapitre qui constitue une brève introduction au travail de cette thèse est suivi du chapitre 2 présentant les aspects théoriques utilisés dans ce travail. D'abord il est fait une brève introduction à la Théorie Fonctionnel de la Densité. A continuation nous décrivons quelques fonctions d'échange-corrélation choisies qui constituent des approximations rendant l'utilisation de la DFT efficace. Ensuite nous présentons différents procédés de prédiction structurale, et en particulier les algorithmes d'optimisation par essaims particuliers et de « Minima Hopping » qeu nous avons utilisés dans cette thèse. Finalement il est discuté comment doit-on se prendre pour évaluer la stabilité thermodynamique des nouvelles phases identifiées. Dans le chapitre 3, nous considérons le système Ba-Si. A travers l'utilisation d'une recherche structurale non-biaisée basée sur l'algorithme d'optimisation par essaims particuliers combinée avec des calculs DFT, nous faisons une étude systématique de la stabilité des phases et de la diversité structurale du système binaire Ba-Si sous haute pression. Le diagramme de phases résultant est assez complexe avec plusieurs compositions se stabilisant et se déstabilisant en fonction de la pression. En particulier, nous avons identifié des nouvelles phases de stœchiométrie BaSi, BaSi2, BaSi3 et BaSi5 qui devraient pouvoir être synthétisées expérimentalement dans un domaine de pressions étendu. Dans le chapitre 4 est présentée notre étude du diagramme de phases du système N-H-O. S'appuyant sur une recherche structural «évolutive » de type ab initio, nous prédisons deux nouvelles phases du système ternaire N-H-O qui sont NOH4 et HNO3 à de pressions allant jusqu'à 150 GPa. La nouvelle phase de NOH4 est stable entre 71 et 150 GPa, tandis que HNO3 est stable entre 39 et 150 GPa (la pression maximum de cette étude). Ces deux nouvelles phases sont lamellaires. Nous confirmons également que la composition NOH5 perd son stabilité pour des pressions supérieures à 122 GPa se décomposant en NH3 et H2O à cette pression. Le chapitre 5 se focalise sur les électrodes transparentes de type-p à base des chalcogénures ternaires. Nous utilisons une approche à grande capacité de traitement de données basée sur la DFT pour obtenir la delafossite et d'autres phases voisines de composition ABX2. Nous trouvons 79 systèmes qui sont absents de la base de données « Materials project database », qui sont stables du point de vue thermodynamique et qui cristallisent soit dans la structure delafossite, soit dans des structures très proches. Cette caractérisation révèle une grande diversité de propriétés allant depuis les métaux ordinaires aux métaux magnétiques et permettant d'identifier quelques candidats pour des électrodes transparents de type-p. Nous présentons enfin à la fin du manuscrit nos conclusions générales et les perspectives de ce travail
In this thesis we use global structural prediction methods (Particle Swarm Optimization and Minima Hopping Method) and high-throughput techniques to predict crystal structures of different systems under different conditions. We performed structural prediction by using the Crystal structure Analysis by Particle Swarm Optimization (CALYPSO) combined with Density Functional Theory (DFT) that made possible to unveil several stable compounds, so far unknown, on the phase diagrams of Ba-Si systerm and N-H-O system. Afterwards, we performed a high-throughput investigation on ternary compounds of composition ABX2, where A and B are elements of the periodic table up to Bi, and X is a chalcogen (O, S, Se, and Te) by using density functional theory and combining calculations of crystal prototypes with structural prediction (Minima Hopping Method). The following paragraphs summarize the content by chapter of this document. Chapter 1 is a short introduction of this thesis. Chapter 2 consists of the basic theory used in this thesis. Firstly, a short introduction of Density Function Theory (DFT) is presented. Then, we describe some approximate exchange- correlation functions that make DFT practical. Next, we introduce different structural prediction algorithms, especially Particle Swarm Optimization and Minima Hopping Method which we used in this thesis. Finally, we discuss the thermodynamic stablility criteria for a new a new structure. In Chapter 3, we first consider Ba–Si system. Using an unbiased structural search based on a particle-swarm optimization algorithm combined with DFT calculations, we investigate systematically the ground-state phase stability and structural diversity of Ba–Si binaries under high pressure. The phase diagram turns out to be quite intricate, with several compositions stabilizing/destabilizing as a function of pressure. In particular, we identify novel phases of BaSi, BaSi2, BaSi3, and BaSi5 that might be synthesizable experimentally over a wide range of pressures. Chapter 4 contains the investigation of the phases diagram of the N–H–O system. By using ab initio evolutionary structural search, we report the prediction of two novel phases of the N–H–O ternary system, namely NOH4 and HNO3 (nitric acid) at pressure up to 150 GPa. Our calculations show that the new C2/m phase of NOH4 is stable under a large range of pressure from 71 GPa to 150 GPa while the P21/m phase of HNO3 (nitric acid) is stable from 39 GPa to 150 GPa (the maximum pressure which we have studied). We also confirmed that the composition NOH5 (NH3H2O) becomes unstable for pressures above 122 GPa. It decomposes into NH3 and H2O at this pressure. Chapter 5 focuses on p-type transparent electrodes of ternary chalcogenides. We use a high-throughput approach based on DFT to find delafossite and related layered phases of composition ABX2, where A and B are elements of the periodic table, and X is a chalcogen (O, S, Se, and Te). From the 15 624 compounds studied in the trigonal delafossite prototype structure, 285 are within 50 meV/atom from the convex hull of stability. These compounds are further investigated using global structural prediction methods to obtain their lowest- energy crystal structure. We find 79 systems not present in the "Materials project database" that are thermodynamically stable and crystallize in the delafossite or in closely related structures. These novel phases are then characterized by calculating their band gaps and hole effective masses. This characterization unveils a large diversity of properties, ranging from normal metals, magnetic metals, and some candidate compounds for p-type transparent electrodes. At the end of the thesis, we give our general conclusion and an outlook

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Dottavio, Giannina. "Existence d'une lacune de miscibilité dans le ternaire U-Nd-O et son lien avec la structure HBS du combustible nucléaire irradié". Thesis, Aix-Marseille, 2014. http://www.theses.fr/2014AIXM4053/document.

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L'énergie nucléaire constitue aujourd'hui une partie importante de la production d'électricité dans le monde, notamment en France. Dans les réacteurs nucléaires, le combustible le plus utilisé est le dioxyde d'uranium. Dans cette thèse, nous nous intéressons plus particulièrement aux modifications de la structure cristalline du combustible irradié liées à l'augmentation de son taux de combustion. Nous avons confirmé que, pour des conditions proches du combustible irradié, une lacune de miscibilité existe dans le ternaire U-Nd-O. Comme (U,Nd)O2 est un matériau modèle du combustible, nous avons recherché l'existence d'une lacune de miscibilité pour le combustible irradié, qui serait alors considéré comme un point dans un pseudo diagramme de phases. Des mesures par diffraction des rayons X sur combustible irradié ont donné des résultats cohérents avec cette hypothèse. Fort de ce résultat nous proposons une nouvelle interprétation de l'évolution de la microstructure du combustible irradié en fonction du taux de combustion qui s'appuie sur l'existence de cette lacune de miscibilité
The nuclear energy represents today an important fraction of electricity production in the world and especially in France. The most used nuclear fuel today is the uranium dioxide UO2. In this thesis, we have studied the crystallographic structure evolution of this material related to the increase of its burn-up.We have confirmed that, under conditions similar of those of irradiated nuclear fuel, a miscibility gap exists in the (U1-yNdy)O2 system. As (U1-yNdy)O2 system can be considered as a model of the fuel, we have search for the existence of a miscibility gap in the irradiated fuel, which would be considered as a ternary pseudo diagram de phases. XRD measurements of theses system give us results consistent with this hypothesis.Based on this evidence, we propose a new interpretation of the microstructure evolution of the irradiated fuel as a function of the burn-up

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Porcar, Lionel. "Incorporation de polymères organiques dans une phase lamellaire lyotrope : structures et comportements de phases". Montpellier 2, 1997. http://www.theses.fr/1997MON20248.

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Nous etudions le comportement d'une phase lamellaire a solvant mixte composee de tritons x, de cpci, d'eau et de decane en presence de polymeres organique ou inorganique. Le confinement de polymere organique non adsorbant entre deux membranes est a la base d'une interaction attractive de depletion qui tend a destabiliser le smectique. Dans cette etude, nous montrons par dcrx, l'existence de separations de phases et de trois points critiques de separation de phases l/l, en presence de polymere uniquement. Un modele a plusieurs composants permettant de calculer le module de compressibilite smectique b de la phase lamellaire est presente. A l'aide de ce dernier, nous expliquons quantitativement deux des trois points critiques de separation de phase lamellaire/lamellaire. La phase lamellaire est egalement utilisee comme matrice bidimensionnelle afin d'orienter la croissance de polymeres inorganiques. Nous avons determine les conditions experimentales pour lesquelles la polymerisation de precurseurs de silice a lieu sans detruire la structure smectique de la matrice. Cette etude a permis de montrer que la silice est localisee dans la couche d'eau et que la topologie de la phase lamellaire n'est pas affectee par les reactions de polymerisation.

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Bodet, Jean-François. "Structure et dynamique de phases microémulsion". Bordeaux 1, 1988. http://www.theses.fr/1988BOR10537.

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La structure des microemulsions eau/dodecane/dodecylsulfate de sodium/hexanol est etudiee a l'aide de techniques de resonance magnetique nucleaire a gradient de champ pulse, de diffusion de lumiere, de microscopie electronique et de chromatographie. Un effet considerable de la temperature sur la courbure du film de tensioactif non ionique est mis en evidence

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Delivorias, Nikitas Alex. "Cosmic structure from phase transitions". Thesis, Durham University, 1997. http://etheses.dur.ac.uk/4702/.

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Motivated by recent observations suggesting that structures in the Universe appear to be concentrated on the walls of bubbles that surround giant voids, we examine the possibility that the observed structure may have resulted from a first order phase transition that occured after inflation and which proceeded by quantum tunnelling and the formation of bubbles of true vacuum. Since we lack a fundamental theory of particle physics that would define the scalar field responsible for the second phase change and predict the scale of the resulting structures, we instead examine two similar parametrised forms for the potential motivated by the standard Higgs model, and attempt to determine values of the parameters that can reproduce the kind of structures that are observed through bubble wall collisions. The method deployed is quite general and can be applied to any phase transition that occured after inflation. It is found that although the shape of the required potential and its coupling can be determined, the epoch of the proposed second phase transition is in general not specified by the observed structures. The full verification or otherwise of our proposal will require not only a more detailed consideration of its predictions for the large scale structure of the Universe and its compatibility with the cosmic microwave background radiation but also the embedding of our ideas in a credible theory of particle physics beyond the Standard Model.

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Song, Xiaowei, Matias R. Fagiani, Sandy Gewinner, Wieland Schöllkopf, Knut Roger Asmis, Florian A. Bischoff, Fabian Berger y Joachim Sauer. "Gas phase structures and charge localization in small aluminum oxide anions: Infrared photodissociation spectroscopy and electronic structure calculations". AIP Publishing, 2016. https://ul.qucosa.de/id/qucosa%3A21256.

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We use cryogenic ion trap vibrational spectroscopy in combination with quantum chemical calculations to study the structure of mono- and dialuminum oxide anions. The infrared photodissociation spectra of D2-tagged AlO1-4 − and Al2O3-6 − are measured in the region from 400 to 1200 cm−1. Structures are assigned based on a comparison to simulated harmonic and anharmonic IR spectra derived from electronic structure calculations. The monoaluminum anions contain an even number of electrons and exhibit an electronic closed-shell ground state. The Al2O3-6 − anions are oxygen-centered radicals. As a result of a delicate balance between localization and delocalization of the unpaired electron, only the BHLYP functional is able to qualitatively describe the observed IR spectra of all species with the exception of AlO3 −. Terminal Al–O stretching modes are found between 1140 and 960 cm−1. Superoxo and peroxo stretching modes are found at higher (1120-1010 cm−1) and lower energies (850-570 cm−1), respectively. Four modes in-between 910 and 530 cm−1 represent the IR fingerprint of the common structural motif of dialuminum oxide anions, an asymmetric four-member Al–(O)2–Al ring.

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Libros sobre el tema "Phasal structure"

Olemskoi, A. Theory of structure transformations in non-equilibrium condensed matter. Commack, NY: Nova Science, 1999.

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Shu, Lin. On linear structure and phase rotation invariant properties of block 2[superscript l]-PSK modulation codes. [Washington, DC: National Aeronautics and Space Administration, 1990.

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E, Loper David, ed. Structure and dynamics of partially solidified systems. Dordrecht: Martinus Nijhoff Publishers, 1987.

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Bansal, Narottam P. Synthesis and thermal evolution of structure in alkoxide-derived niobium pentoxide gels. [Washington, DC: National Aeronautics and Space Administration, 1993.

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Khachaturi︠a︡n, A. G. Theory of structural transformations in solids. Mineola, N.Y: Dover Publications, 2008.

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Khachaturi︠a︡n, A. G. Theory of structural transformations in solids. Mineola, N.Y: Dover Publications, 2008.

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The physics of structural phase transitions. New York: Springer, 1997.

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Turok, Neil. Phase transitions as the origin of large scale structure in the universe. [Batavia, Ill.]: Fermi National Accelerator Laboratory, 1988.

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Turok, Neil. Phase transitions as the origin of large scale structure in the universe. [Batavia, Ill.]: Fermi National Accelerator Laboratory, 1988.

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1945-, Sigov A. S., ed. Defects and structural phase transitions. New York: Gordon and Breach Science Publishers, 1988.

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Capítulos de libros sobre el tema "Phasal structure"

Birgeneau, R. J., P. M. Horn y D. E. Moncton. "Phases and Phase Transitions in Two Dimensional Systems with Competing Interactions". En The Structure of Surfaces, 404–12. Berlin, Heidelberg: Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-82493-7_64.

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Meyer, B. K. "ZnO: crystal structures, structural phases, transition pressures". En New Data and Updates for IV-IV, III-V, II-VI and I-VII Compounds, their Mixed Crystals and Diluted Magnetic Semiconductors, 565. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-14148-5_315.

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Perrin, André, Christiane Perrin y Roger Chevrel. "Chevrel Phases: Genesis and Developments". En Structure and Bonding, 1–30. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/430_2019_35.

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Takezoe, Hideo y Alexey Eremin. "Phase Structures". En Bent-Shaped Liquid Crystals, 39–116. Boca Raton : CRC Press, [2017] | Series: Liquid crystals book series: CRC Press, 2017. http://dx.doi.org/10.1201/9781315372723-3.

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Vainshtein, Boris K., Vladimir M. Fridkin y Vladimir L. Indenbom. "Lattice Dynamics and Phase Transitions". En Structure of Crystals, 289–329. Berlin, Heidelberg: Springer Berlin Heidelberg, 1995. http://dx.doi.org/10.1007/978-3-642-97512-7_4.

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Woerdemann, Mike. "Holographic Phase Contrast". En Structured Light Fields, 27–45. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-29323-8_3.

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Mortensen, Kell, Walter Pfeiffer, Erich Sackmann y Wolfgang Knoll. "Structural Properties of a Lecithin-Cholesterol System: Ripple Structure and Phase Diagram". En Phase Transitions in Soft Condensed Matter, 293–96. Boston, MA: Springer US, 1989. http://dx.doi.org/10.1007/978-1-4613-0551-4_28.

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Mori, Hazime y Yoshiki Kuramoto. "Phase Dynamics". En Dissipative Structures and Chaos, 69–92. Berlin, Heidelberg: Springer Berlin Heidelberg, 1998. http://dx.doi.org/10.1007/978-3-642-80376-5_5.

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Woodham, Alex P. y André Fielicke. "Gold Clusters in the Gas Phase". En Structure and Bonding, 243–78. Cham: Springer International Publishing, 2013. http://dx.doi.org/10.1007/430_2013_136.

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Rigamonti, Attilio y Pietro Carretta. "Phase Diagrams, Response Functions and Fluctuations". En Structure of Matter, 445–76. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-17897-4_15.

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Actas de conferencias sobre el tema "Phasal structure"

Ostapenko, Marina G., Ludmila L. Meisner, Aleksandr I. Lotkov, Margarita A. Zakharova y Ekaterina Y. Gudimova. "In-situ X-ray diffraction studies of the phase transformations and structural states of B2, R and B19′ phases in Ti49.5Ni50.5 alloy". En ADVANCED MATERIALS WITH HIERARCHICAL STRUCTURE FOR NEW TECHNOLOGIES AND RELIABLE STRUCTURES. AIP Publishing LLC, 2015. http://dx.doi.org/10.1063/1.4932860.

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RAHMAN, ZAHIDUL, JOHN SPANOS y CHENGCHIN CHU. "OPTICAL PATHLENGTH CONTROL EXPERIMENT ON JPL PHASE B TESTBED". En 34th Structures, Structural Dynamics and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1993. http://dx.doi.org/10.2514/6.1993-1695.

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Burton, Belinda y Viktor Verijenko. "Structural Health Monitoring in Marine Structures". En ASME 2002 21st International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2002. http://dx.doi.org/10.1115/omae2002-28278.

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The reliability or safety of structures may be determined in a number of ways, but one of the most accurate must surely be by direct measurement of the stresses or strain incurred by the infrastructure. Structural Health Monitoring (SHM) as it has become known, is usually accomplished by means of sensor placement at strategic locations within the given structure. While some may argue that this becomes expensive, a new method of monitoring structural health may make use of cost effective smart materials, which possess not only monitoring capabilities, but also significant load-bearing capabilities. Research is being conducted on various metastable alloys, which exhibit an austenitic phase at room temperature, but will transform to a martensitic phase structure upon application of strain. The martensitic phase has not only a greater strength than the austenitic phase, but also displays significant ferromagnetism, while the austenite is paramagnetic. Since the martensite forms in direct proportion to the strain experienced by the material, the magnetic signature increases in direct proportion to the strain. A measurement of the magnetism therefore yields a strain reading. Because some of these metastable alloys can be produced in forms, which possess significant strength, various key structural members may then be replaced with the smart material generating self-monitoring components. Only the peak strain is “recorded” within the material though, since the transformation is irreversible. This peak strain is however usually the limiting variable in determining the remaining life of the structure. The varying degrees of strength, corrosion resistance and sensitivity to strain, which can be engineered into the material, mean that a structural element correctly designed using either a metastable alloy or TRIP steel, forms the perfect passive peak strain sensor. This becomes particularly useful in inaccessible situations where non-destructive assessment is required but difficult to carry out in-situ.

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KINCAID, REX y CHRISTINA BLOEBAUM. "THE DAMPER PLACEMENT PROBLEM FOR THE CSI-PHASE 1 EVOLUTIONARY MODEL". En 34th Structures, Structural Dynamics and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1993. http://dx.doi.org/10.2514/6.1993-1655.

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Korkh, M. K., D. I. Davidov, J. V. Korkh, M. B. Rigmant, A. P. Nichipuruk y N. V. Kazantseva. "Phase control of austenitic chrome-nickel steel". En ADVANCED MATERIALS WITH HIERARCHICAL STRUCTURE FOR NEW TECHNOLOGIES AND RELIABLE STRUCTURES. AIP Publishing LLC, 2015. http://dx.doi.org/10.1063/1.4932787.

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LIU, W. y Y. LUA. "A statistical approach to the brittle fracture of a multi-phase solid". En 32nd Structures, Structural Dynamics, and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1991. http://dx.doi.org/10.2514/6.1991-1046.

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Higuchi, Ken. "A piezoelectric linear motor driven by superposing standing waves with phase difference". En 36th Structures, Structural Dynamics and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1995. http://dx.doi.org/10.2514/6.1995-1110.

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Wu, Ziling, Xiaofeng Wu y Yunhui Zhu. "Structured illumination-based phase retrieval via Generative Adversarial Network". En Quantitative Phase Imaging VI, editado por Gabriel Popescu, YongKeun Park y Yang Liu. SPIE, 2020. http://dx.doi.org/10.1117/12.2547551.

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Alata, Romain, Thomas Vourc'h, Lionel Hervé, Sophie Morales, Pascal Silberzan y Cédric Allier. "Phase imaging of supracellular structures with lens-free microscopy". En Quantitative Phase Imaging VII, editado por Gabriel Popescu, YongKeun Park y Yang Liu. SPIE, 2021. http://dx.doi.org/10.1117/12.2579651.

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Phair, L. "The Nuclear Liquid-Vapor Phase Transition: Equilibrium Between Phases Or Free Decay In Vacuum?" En FRONTIERS OF NUCLEAR STRUCTURE. AIP, 2003. http://dx.doi.org/10.1063/1.1556633.

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Informes sobre el tema "Phasal structure"

Ebeling, Robert y Barry White. Load and resistance factors for earth retaining, reinforced concrete hydraulic structures based on a reliability index (β) derived from the Probability of Unsatisfactory Performance (PUP) : phase 2 study. Engineer Research and Development Center (U.S.), marzo de 2021. http://dx.doi.org/10.21079/11681/39881.

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This technical report documents the second of a two-phase research and development (R&D) study in support of the development of a combined Load and Resistance Factor Design (LRFD) methodology that accommodates geotechnical as well as structural design limit states for design of the U.S. Army Corps of Engineers (USACE) reinforced concrete, hydraulic navigation structures. To this end, this R&D effort extends reliability procedures that have been developed for other non-USACE structural systems to encompass USACE hydraulic structures. Many of these reinforced concrete, hydraulic structures are founded on and/or retain earth or are buttressed by an earthen feature. Consequently, the design of many of these hydraulic structures involves significant soil structure interaction. Development of the required reliability and corresponding LRFD procedures has been lagging in the geotechnical topic area as compared to those for structural limit state considerations and have therefore been the focus of this second-phase R&D effort. Design of an example T-Wall hydraulic structure involves consideration of five geotechnical and structural limit states. New numerical procedures have been developed for precise multiple limit state reliability calculations and for complete LRFD analysis of this example T-Wall reinforced concrete, hydraulic structure.

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Lawson, J. Simulation of phase structures. Office of Scientific and Technical Information (OSTI), abril de 1995. http://dx.doi.org/10.2172/106501.

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Martin, J. E., J. P. Wilcoxon y R. A. Anderson. Evolution of structure during phase transitions. Office of Scientific and Technical Information (OSTI), marzo de 1996. http://dx.doi.org/10.2172/238582.

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Katz, Sabrina, Miguel Algarin y Emanuel Hernandez. Structuring for Exit: New Approaches for Private Capital in Latin America. Inter-American Development Bank, marzo de 2021. http://dx.doi.org/10.18235/0003074.

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Structured financing solutions encompass a range of investment approaches that provide liquidity to investors without the need for a traditional equity exit event, such as a strategic sale, sale to another financial investor, or public market listing. Structuring mechanisms across the debt-to-equity spectrum determine the exit terms of the deal, therefore providing considerable downside protection to investors. Structured financing solutions are an incipient but increasingly important set of tools for investors active in Latin America to address the financing gap for companies that lack access to bank financing and are not attractive targets for traditional PE and VC players. Many investors employing these strategies are in an experimental phase, reporting new lessons learned with each deal completed. Impact investors have been among the top drivers of these structuring innovations, as they have grappled with the additional limitations associated with the straight equity model for environmental or social enterprises. However, the use of structured financing is by no means restricted to the impact investing space. Fund managers have invested USD4b in private credit deals in Latin America since 2018, more than the previous ten years combined. PE and VC investors have also increasingly employed quasi-equity and debt instruments. ACON Investments, for example, has employed mezzanine structures in several deals from its latest funds. Brazil-focused venture capital firm SP Ventures has recently begun investing from its debut venture debt fund. Growing experimentation by fund managers demonstrates the opportunity for investors across ticket sizes, strategies, and the impact-to-commercial spectrum. The structures discussed and the case studies highlighted in this report contain some of the major lessons applicable to a wide group of private capital investors in Latin America targeting certain and timely exits with consistent returns.

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Melby, Jeffrey, Thomas Massey, Abigail Stehno, Norberto Nadal-Caraballo, Shubhra Misra y Victor Gonzalez. Sabine Pass to Galveston Bay, TX Pre-construction, Engineering and Design (PED) : coastal storm surge and wave hazard assessment : report 1 – background and approach. Engineer Research and Development Center (U.S.), septiembre de 2021. http://dx.doi.org/10.21079/11681/41820.

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The US Army Corps of Engineers, Galveston District, is executing the Sabine Pass to Galveston Bay Coastal Storm Risk Management (CSRM) project for Brazoria, Jefferson, and Orange Counties regions. The project is currently in the Pre-construction, Engineering, and Design phase. This report documents coastal storm water level and wave hazards for the Port Arthur CSRM structures. Coastal storm water level (SWL) and wave loading and overtopping are quantified using high-fidelity hydrodynamic modeling and stochastic simulations. The CSTORM coupled water level and wave modeling system simulated 195 synthetic tropical storms on three relative sea level change scenarios for with- and without-project meshes. Annual exceedance probability (AEP) mean values were reported for the range of 0.2 to 0.001 for peak SWL and wave height (Hm0) along with associated confidence limits. Wave period and mean wave direction associated with Hm0 were also computed. A response-based stochastic simulation approach is applied to compute AEP runup and overtopping for levees and overtopping, nappe geometry, and combined hydrostatic and hydrodynamic fluid pressures for floodwalls. CSRM structure crest design elevations are defined based on overtopping rates corresponding to incipient damage. Survivability and resilience are evaluated. A system-wide hazard level assessment was conducted to establish final recommended system-wide CSRM structure elevations.

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Selman, Bart. Controlling Computational Cost: Structure, Phase Transition and Randomization. Fort Belvoir, VA: Defense Technical Information Center, julio de 2004. http://dx.doi.org/10.21236/ada426243.

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Sikivie, P. y J. R. Ipser. Phase-space structure of cold dark matter halos. Office of Scientific and Technical Information (OSTI), enero de 1991. http://dx.doi.org/10.2172/5594858.

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Sikivie, P. y J. R. Ipser. Phase-space structure of cold dark matter halos. Office of Scientific and Technical Information (OSTI), diciembre de 1991. http://dx.doi.org/10.2172/10127403.

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Maranghides, Alexander, Shonali Nazare, Eric Link, Kuldeep Prasad, Matthew Hoehler, Matthew Bundy, Steven Hawks et al. Structure Separation Experiments Phase 1 Preliminary Test Plan. National Institute of Standards and Technology, mayo de 2021. http://dx.doi.org/10.6028/nist.tn.2161.

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Traiber, A. J. S., S. M. Allen, P. E. A. Turchi y R. M. Waterstrat. Electronic structure and phase equilibria in ternary substitutional alloys. Office of Scientific and Technical Information (OSTI), abril de 1996. http://dx.doi.org/10.2172/383551.

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