Bibliographies thématiques / Analisi implicita

Littérature scientifique sur le sujet « Analisi implicita »

Auteur : Grafiati
Publié le 10 mars 2023

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Articles de revues sur le sujet "Analisi implicita"

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El-Amin, Mohamed F. « Iterative Numerical Scheme for Non-Isothermal Two-Phase Flow in Heterogeneous Porous Media ». Algorithms 12, no 6 (6 juin 2019) : 117. http://dx.doi.org/10.3390/a12060117.

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In the current paper, an iterative algorithm is developed to simulate the problem of two-phase flow with heat transfer in porous media. The convective body force caused by heat transfer is described by Boussinesq approximation throughout with the governing equations, namely, pressure, saturation, and energy. The two coupled equations of pressure and saturation are solved using the implicit pressure-explicit saturation (IMPES) scheme, while the energy equation is treated implicitly, and the scheme is called iterative implicit pressure, explicit saturation, implicit temperature (I-IMPES-IMT). In order to calculate the pressure implicitly, the equations of pressure and saturation are coupled by linearizing the capillary pressure which is a function of saturation. After that, the equation of saturation is solved explicitly. Then, the velocity is computed which is used in the energy equation to calculate the temperature implicitly. The cell-centered finite difference (CCFD) method is utilized for spatial discretization. Furthermore, a relaxation factor along is used with the Courant–Friedrichs–Lewy (CFL) condition. Finally, in order to illustrate the efficiency of the developed algorithm, error estimates for saturation and temperature for different values of time steps and number of iterations are presented. Moreover, numerical examples of different physical scenarios of heterogamous media are presented.
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Nopiah, Julaina, et Nur Maizatul Maisarah Nasrong. « Makna Ujaran Implisit dalam Vlog Mat Luthfi : Analisis Teori Relevans ». Jurnal Bahasa 20, no 2 (4 décembre 2020) : 203–30. http://dx.doi.org/10.37052/jb(1)no2.

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This study researches the meanings of implicit utterances in Mat Luthfi’s vlog. This qualitative study employs relevance theory, a linguistics-based theory proposed by Sperber and Wilson drawn from the discipline of pragmatics. This theory foregrounds three main concepts comprising the role of context, cognitive effects and processing efforts. The research data consists of implicit dialogue uttered by characters in the video. Data were identified, transcribed, and subsequently analysed based on Relevance Theory. Library research was also used to further explore the implicit and Relevance Theory-based expressions. The findings show that there are ten utterances in the vlogs with implicit elements. These in turn indicate that the speaker wished to convey specific messages to listeners. This study explains that in the Malay community, utterings are various in meaning and are not merely confined to their literal meanings for correct understanding and interpretation. Hence, the meaning of an utterance is more easily understood when interpreted using the Relevance Theory.
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Nopiah, Julaina, et Nur Maizatul Maisarah Nasrong. « Makna Ujaran Implisit dalam Vlog Mat Luthfi : Analisis Teori Relevans ». Jurnal Bahasa 20, no 2 (4 décembre 2020) : 203–30. http://dx.doi.org/10.37052/jb20(2)no2.

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This study researches the meanings of implicit utterances in Mat Luthfi’s vlog. This qualitative study employs relevance theory, a linguistics-based theory proposed by Sperber and Wilson drawn from the discipline of pragmatics. This theory foregrounds three main concepts comprising the role of context, cognitive effects and processing efforts. The research data consists of implicit dialogue uttered by characters in the video. Data were identified, transcribed, and subsequently analysed based on Relevance Theory. Library research was also used to further explore the implicit and Relevance Theory-based expressions. The findings show that there are ten utterances in the vlogs with implicit elements. These in turn indicate that the speaker wished to convey specific messages to listeners. This study explains that in the Malay community, utterings are various in meaning and are not merely confined to their literal meanings for correct understanding and interpretation. Hence, the meaning of an utterance is more easily understood when interpreted using the Relevance Theory.
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Galingging, Yusniaty. « Analisis Makna Implisit dan Eksplisit pada Bahasa Batak Toba dan Bahasa Indonesia ». DIALEKTIKA : JURNAL BAHASA, SASTRA DAN BUDAYA 7, no 2 (7 décembre 2020) : 28–46. http://dx.doi.org/10.33541/dia.v7i2.3049.

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AbstrakSetiap bahasa bersifat unik. Bahasa mempunyai caranya masing-masing untuk menyampaikan maksudnya. Bahasa Indonesia mempunyai caranya sendiri yang berbeda dari bahasa Batak, meskipun kedua bahasa ini berada pada wilayah yang sama, yaitu teritori Indonesia. Kedua bahasa ini mempunyai karakteristik masing-masing dalam hal menyampaikan pemikirannya. Makna dalam suatu bahasa dapat dinyatakan secara implisit dan secara eksplisit. Mengimplisitkan makna, maksudnya adalah tidak menyatakan makna tertentu secara jelas, baik melalui kosa kata atau gramatika bahasa itu akan tetapi makna itu dipahami oleh pembaca. Makna yang dieksplisitkan, yaitu makna yang dinyatakan dengan kosa kata atau dengan struktur bahasa itu sendiri. Suatu makna dinyatakan secara eksplisit atau implisit tergantung pada konteks atau ketersediaan kosa kata pada sebuah bahasa. Menyatakan makna secara eksplisit dapat menghindarkan ambiguitas, ketidakjelasan dan kesalahpahaman. Akan tetapi mengekpresikan makna secara eksplisit berulang-ulang dapat menyebabkan sepertinya membodohi pembaca, seakan pembaca tidak mengetahui topik yang sedang dibicarakan atau juga dapat membuat tulisan itu membosankan. Data yang digunakan pada kajian ini adalah Patik Ni Debata Nasampului Dohot Lapatanna untuk data bahasa Batak dan Dasa Titah untuk bahasa Indonesia. Pada kajian ini dapat dilihat bahwa Bahasa Batak pada umumnya mengeksplisitkan maknanya dibanding dengan bahasa Indonesia. Tujuan dari kajian ini adalah untuk memberi gambaran karakteristik bahasa Batak dan Bahasa Indonesia khususnya dalam hal mengekspresikan maknanya. Kata Kunci: Implisit, eksplisit, padanan kata, karakteristik bahasa AbstractEvery language is unique. Language has a specific way to state its idea. The Indonesian language has its way that differs from the Batak language in conveying their meaning, eventhough both belong to the same region, that is Indonesian territory. These two languages have their specific characteristics in expressing their thoughts. Meaning in a language can be defined implicitly and explicitly. To explain a meaning implicitly means that the meaning is expressed without using a particular word and a language structure, but the reader understands it. To tell a meaning explicitly implies that the meanings are expressed by using a word or by the language's structure. To convey the meaning explicitly or implicitly depends on thecontext or by some cirstumstaces and the lexicon's availability in a language. To express a meaning explicitly may avoid ambiguity, vagueness, and misunderstanding. But, describing the meaning explicitly all the time may cause ignorant, as if other people know nothing about the topic of the discussion. The data used is taken from Patik Ni Debata Nasampului Dohot Lapatanna for Batak Language and Dasa Titah for the Indonesian language. This writing shows that the Batak language uses straightforward way more in comparison to the Indonesian language. This study aims to draw a characteristic of the Batak language and Indonesian language, especially in expressing their meaning. Key words : Implicit, Explicit, equivalence, language characteristics
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Lopes, Bruno D., Paulo R. da Silva et Marco A. Teixeira. « Piecewise Implicit Differential Systems ». Journal of Dynamics and Differential Equations 29, no 4 (31 mai 2016) : 1519–37. http://dx.doi.org/10.1007/s10884-016-9538-2.

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Stiawan, Evan. « Keunikan Jamaah dalam Merespon sebuah Konten Loyalitas Agen Travel Umrah Dimediasi oleh Kualitas Relasional ». Jurnal Pasar Modal dan Bisnis 2, no 1 (30 avril 2020) : 83–98. http://dx.doi.org/10.37194/jpmb.v2i1.41.

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Tujuan penelitian ini yaitu Mengetahui pengaruh implicit self theory terhadap kualitas relasional jamaah dalam memilih travel umrah. Mengetahui pengaruh kualitas relasional terhadap loyalitas jamaah dalam memilih travel umrah. Mengetahui pengaruh implicit self theory terhadap loyalitas jamaah dalam memilih travel umrah. Metode analisis data dalam penelitian menggunakan metode Structural Equation Model (SEM) dan Analsiis Mediasi. Berdasarkan tahapan analisis sesuai dengan prosedur penelitian yang ada, bahwa sesuai tujuan pertama mengetahui pengaruh implicit self theory terhadap kualitas relasional jamaah dalam memilih travel umrah, maka dapat disimpulkan bahwa berpengaruh. Mengetahui pengaruh kualitas relasional terhadap loyalitas jamaah dalam memilih travel umrah maka dapat disimpulkan bahwa berpengaruh. Mengetahui pengaruh implicit self theory terhadap loyalitas jamaah dalam memilih travel umrah maka dapat disimpulkan bahwa berpengaruh.
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Morozov, A. S. « Permutations and implicit definability ». Algebra and Logic 27, no 1 (janvier 1988) : 12–24. http://dx.doi.org/10.1007/bf01978299.

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Bartels, Sören, et Michael Růžička. « Convergence of Fully Discrete Implicit and Semi-implicit Approximations of Singular Parabolic Equations ». SIAM Journal on Numerical Analysis 58, no 1 (janvier 2020) : 811–33. http://dx.doi.org/10.1137/19m126551x.

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Gefter, S. L., et A. L. Piven. « Implicit Linear Nonhomogeneous Difference Equation in Banach and Locally Convex Spaces ». Zurnal matematiceskoj fiziki, analiza, geometrii 15, no 3 (25 juin 2019) : 336–53. http://dx.doi.org/10.15407/mag15.03.336.

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Riaza, Ricardo. « Linearly implicit Liénard systems ». Nonlinear Analysis : Theory, Methods & ; Applications 74, no 1 (janvier 2011) : 213–23. http://dx.doi.org/10.1016/j.na.2010.08.035.

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Thèses sur le sujet "Analisi implicita"

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Malheiros, Marcelo de Gomensoro. « Analise topologica de um modelo implicito ». [s.n.], 1999. http://repositorio.unicamp.br/jspui/handle/REPOSIP/260172.

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Orientador: Wu Shin-Ting
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e de Computação
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Mestrado
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Marziali, Giacomo. « Analisi di 3 microdelezioni implicate nel disturbo autistico ». Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/11235/.

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Nella Tesi viene riportata l’analisi genetica di un campione di 128 famiglie con Disturbo dello Spettro Autistico, tramite il sistema di SNP array “PsychArray” (Illumina ), contenente oltre 500.000 sonde sull’intero genoma. Questi dati sono stati utilizzati per individuare Copy Number Variants (CNVs) rari e rilevanti da un punto di vista clinico. Sono stati quindi selezionati tre CNVs per un ulteriore approfondimento: due microdelezioni già descritte come patologiche (rispettivamente nella regione 1p36.32 e 22q13.33 comprendente il gene SHANK3) sono risultate essere “de novo”, mentre una terza microdelezione nel gene CTNNA3 è ereditata dalla madre. Tutti e tre i CNV sono stati validati tramite Real Time-PCR, definendone i confini. Per quanto riguarda la microdelezione in CTNNA3, poiché difetti di questo gene sono stati implicati nell’autismo con un meccanismo recessivo, è stata anche condotta un’analisi di sequenza di tutti gli esoni del gene negli individui della famiglia interessata, al fine di ricercare eventuali mutazioni puntiformi sull’allele non deleto. Questa analisi non ha individuato nessuna variante potenzialmente dannosa, pertanto il difetto in CTNNA3 non risulta essere la causa principale del fenotipo autistico in questa famiglia, anche se potrebbe avere un ruolo come fattore di suscettibilità.
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Chernyshova, Elizaveta. « Expliciter et inférer dans la conversation : modélisation de la séquence d’explicitation dans l’interaction ». Thesis, Lyon, 2018. http://www.theses.fr/2018LYSE2132/document.

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Cette thèse porte sur la co-construction de la signification en interaction et les manifestations des processus interprétatifs des participants. En s’intéressant au processus d’explicitation, c’est-à-dire le processus par lequel un contenu informationnel devient explicite dans la conversation, elle propose une étude pluridimensionnelle de la séquence conversationnelle en jeu dans ce processus. La co-construction de la signification est ici abordée comme relevant d’une transformation informationnelle et de l’inférence.Nos analyses ont porté sur un corpus de français parlé en interaction, en contexte de repas et apéritifs entre amis. A partir d’une collection de séquences d’explicitation, définies comme des configurations dans lesquelles une inférence estsoumise à validation, ce travail propose une analyse multidimensionnelle, portant un double regard sur les données : celui de l’analyse conversationnelle et celui d’une modélisation de la pratique d’explicitation. Ainsi, nous proposons de parcourir cettepratique selon trois axes d’analyse : (a) une analyse séquentielle, s’intéressant au déploiement de la séquence d’explicitation et des éléments la composant, (b) une analyse reposant sur une modélisation de la gestion informationnelle dans cetteséquence, et (c) une analyse des formats linguistiques employés pour l’exhibition du processus inférentiel. Un des enjeux de ce travail l’élaboration d’un modèle conversationnaliste pour la gestion informationnelle et son application à l’analyse desdonnées de langue parlée en interaction
This dissertation deals with the co-construction of meaning in interaction and the ways in which conversationalists exhibit their interpretative processes. The focus of this study is the process of explicitation, i.e. the process through which an informational content becomes explicit in conversation. By offering a multi-level analysis of conversational sequences engaged in this practice, the study approaches the co-construction of meaning from the point of view of informational transformation and inference.The analyses presented here have been conducted on a corpus of spoken French in interaction, within the setting of informal encounters between friends around a meal or a drink. The explicitation sequence is defined as a conversational pattern where an inference is being submitted for confirmation. Starting from a collection of these sequences, this study offers a twofold approach: that of conversation analysis, and that of modeling of the conversational sequence. The practice of making a content explicit is here being explored according to three analytical lines: (a) the sequential analysis, focusing on the deployment of the explicitation sequence and its components; (b) the analysis according to a device elaborated by means of modeling information management in these sequences; and (c) the analysis of the linguistic designs used when exhibiting the inference. One of themain challenges of the present study is that of a proposition of a conversationalist model, dealing with information management and its enforcement through analysis of talk in interaction
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Péchoux, Romain. « Analyse de la complexité des programmes par interprétation sémantique ». Thesis, Vandoeuvre-les-Nancy, INPL, 2007. http://www.theses.fr/2007INPL084N/document.

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Il existe de nombreuses approches développées par la communauté Implicit Computational Complexity (ICC) permettant d'analyser les ressources nécessaires à la bonne exécution des algorithmes. Dans cette thèse, nous nous intéressons plus particulièrement au contrôle des ressources à l'aide d'interprétations sémantiques. Après avoir rappelé brièvement la notion de quasi-interprétation ainsi que les différentes propriétés et caractérisations qui en découlent, nous présentons les différentes avancées obtenues dans l'étude de cet outil : nous étudions le problème de la synthèse qui consiste à trouver une quasi-interprétation pour un programme donné, puis, nous abordons la question de la modularité des quasi-interprétations. La modularité permet de diminuer la complexité de la procédure de synthèse et de capturer un plus grand nombre d'algorithmes. Après avoir mentionné différentes extensions des quasi-interprétations à des langages de programmation réactifs, bytecode ou d'ordre supérieur, nous introduisons la sup-interprétation. Cette notion généralise la quasi-interprétation et est utilisée dans des critères de contrôle des ressources afin d'étudier la complexité d'un plus grand nombre d'algorithmes dont des algorithmes sur des données infinies ou des algorithmes de type diviser pour régner. Nous combinons cette notion à différents critères de terminaison comme les ordres RPO, les paires de dépendance ou le size-change principle et nous la comparons à la notion de quasi-interprétation. En outre, après avoir caractérisé des petites classes de complexité parallèles, nous donnons quelques heuristiques permettant de synthétiser des sup-interprétations sans la propriété sous-terme, c'est à dire des sup-interprétations qui ne sont pas des quasi-interprétations. Enfin, dans un dernier chapitre, nous adaptons les sup-interprétations à des langages orientés-objet, obtenant ainsi différents critères pour contrôler les ressources d'un programme objet et de ses méthodes
There are several approaches developed by the Implicit Computational Complexity (ICC) community which try to analyze and control program resources. In this document, we focus our study on the resource control with the help of semantics interpretations. After introducing the notion of quasi-interpretation together with its distinct properties and characterizations, we show the results obtained in the study of such a tool: We study the synthesis problem which consists in finding a quasi-interpretation for a given program and we tackle the issue of quasi-interpretation modularity. Modularity allows to decrease the complexity of the synthesis procedure and to capture more algorithms. We present several extensions of quasi-interpretations to reactive programming, bytecode verification or higher-order programming. Afterwards, we introduce the notion of sup-interpretation. This notion strictly generalizes the one of quasi-interpretation and is used in distinct criteria in order to control the resources of more algorithms, including algorithms over infinite data and algorithms using a divide and conquer strategy. We combine sup-interpretations with distinct termination criteria, such as RPO orderings, dependency pairs or size-change principle, and we compare them to the notion of quasi-interpretation. Using the notion of sup-interpretation, we characterize small parallel complexity classes. We provide some heuristics for the sup-interpretation synthesis: we manage to synthesize sup-interpretations without the subterm property, that is, sup-interpretations which are not quasi-interpretations. Finally, we extend sup-interpretations to object-oriented programs, thus obtaining distinct criteria for resource control of object-oriented programs and their methods
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Velasquez, Rafael. « The Implicit Function Theorem ». Thesis, Umeå universitet, Institutionen för matematik och matematisk statistik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-151933.

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In this essay we present an introduction to real analysis, with the purpose of proving the Implicit Function Theorem. Our proof relies on other well-known theorems in set theory and real analysis as the Heine-Borel Covering Theorem and the Inverse Function Theorem.
I denna uppsats ger vi en introduktion till reel analys, med syftet att bevisa den implicita funktionssatsen. Vårt bevis bygger på andra välkända satser i mängdteori och reel analys som Heine-Borels övertäckningssats och inversa funktionssatsen.
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Bobadilla, Guadalupe Ulises 1959. « Analise dinamica da interação solo-estrutura para estruturas superficiais utilizando a transformada implicita de Fourier (ImFT) ». [s.n.], 2008. http://repositorio.unicamp.br/jspui/handle/REPOSIP/257862.

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Orientadores: Aloisio Ernesto Assan, Persio Leister de Almeida Barros
Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo
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Resumo: As características que determinam o comportamento de uma estrutura sob carregamento dinâmico são as massas dos vários elementos, a rigidez dos seus membros e a dissipação de energia. Para avaliar corretamente a resposta dinâmica de uma estrutura levando em conta os efeitos da interação, é necessário incorporar as propriedades dinâmicas do solo dentro da formulação matemática do modelo físico adotado. Referido à superestrutura, os efeitos da interação alteram a resposta estrutural final, devido à inter-relação dinâmica entre o movimento do solo e o movimento da base de fundação. Conseqüentemente, se primeiro se avalia o movimento da base de fundação [produto da interação solo-estrutura (SSI)], a resposta estrutural final poderá ser resolvida depois via análise modal da superestrutura. Esta conceituação é utilizada no presente trabalho. Aqui, todo o processo de análise é feito no domínio da freqüência. A resposta estrutural é avaliada através da chamada Transformada Implícita de Fourier (ImFT), implementando-se para isto um algoritmo computacional que avalia a resposta dinâmica utilizando a ImFT eficientemente. A ImFT é uma avaliação racional das matrizes envolvendo as transformadas discretas de Fourier (DFT), para num mesmo processo matricial achar a resposta dinâmica estrutural diretamente no domínio do tempo. Correntemente, para a análise no domínio da freqüência tem-se utilizado a FFT (Fast Fourier Transform); embora a FFT seja computacionalmente eficiente, apresenta-se aqui a ImFT, um outro processo computacional alternativo à FFT e bastante eficiente para certos tipos de carregamento tais como uma excitação sísmica, que é o carregamento utilizado nesta pesquisa
Abstract: The characteristics that determine the behavior of a structure under dynamic loading are the masses of various elements, the rigidity of its members and the dissipation of energy. To properly evaluate the dynamic response of a structure taking into account the effects of the interaction, it is necessary to incorporate the dynamic properties of the soil within the mathematical formulation of the physical model adopted. Referred to the superstructure, the effects of interaction modify the final structural response due to the dynamic interrelationship between the soil motion and the base of foundation motions. Consequently, if that first assesses the base of foundation motions [product of the soil-structure interaction effects (SSI)], the final structural response can be assessed later by modal analysis of the superstructure. This concept is used in this work. Here, the whole process of analysis is done in frequency domain. The structural response is evaluated by the so-called Implicit Fourier Transform (ImFT), implementing to this a computational algorithm that assesses the structural dynamic response using the ImFT efficiently. The ImFT is a rational assessment of matrices involving the Discrete Fourier Transform (DFT) for a same matrix process find structural dynamics response directly on time domain. Commonly, for the analysis in the frequency domain has been used the FFT (Fast Fourier Transform), although the FFT is efficiently, presents itself here the ImFT, another alternative computational algorithm and quite competent to certain types of loading such as a seismic excitation which is the loading used in this study
Doutorado
Estruturas
Doutor em Engenharia Civil
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Smith, Matthew Scott. « Implicit Affinity Networks ». BYU ScholarsArchive, 2007. https://scholarsarchive.byu.edu/etd/1112.

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Although they clearly exist, affinities among individuals are not all easily identified. Yet, they offer unique opportunities to discover new social networks, strengthen ties among individuals, and provide recommendations. We propose the idea of Implicit Affinity Networks (IANs) to build, visualize, and track affinities among groups of individuals. IANs are simple, interactive graphical representations that users may navigate to uncover interesting patterns. This thesis describes a system supporting the construction of IANs and evaluates it in the context of family history and online communities.
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Mascali, Loriana Grazia Vanessa. « Caratterizzazione della funzione e del comportamento dell'alfa cellula pancreatica : analisi dei meccanismi fisiopatologici implicati nell'insorgenza del diabete ». Doctoral thesis, Università di Catania, 2013. http://hdl.handle.net/10761/1459.

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Le alfa cellule pancreatiche in corso di diabete producono glucagone in maniera inappropriata, senza risentire dell effetto inibitorio dell insulina. Lo scopo dello studio è stato quello di analizzare la funzionalità della cellula alfa in termini di secrezione di glucagone, dopo stimolo fisiologico e la risposta di queste cellule all insulina, fisiologico inibitore della secrezione. Oltre che l'identificazione del possibile ruolo dannoso di questi stessi stimolanti, quando presenti cronicamente ed in maniera elevata. Abbiamo inoltre analizzato la risposta cellulare alle condizioni avverse che si verificano in condizioni di diabete (esposizione a FFA, citochine, disfunzione recettore insulinico) e le possibili strategie terapeutiche. I dati del nostro gruppo hanno dimostrato che la lipotossicità potrebbe essere la causa dell alterato segnale insulinico intracellulare nelle alfa cellule. I nostri dati hanno messo in luce inoltre per la prima volta le basi molecolari della maggiore resistenza e differente risposta, in termini di induzione dell apoptosi indotta da citochine, delle alfa cellule rispetto alle beta cellule pancreatiche. Inoltre ottenendo alfa cellule prive di recettore insulinico abbiamo potuto analizzare il contributo specifico del segnale insulinico intracellulare sia per la funzione secretoria di queste cellule sia per la funzione proliferativa. Oltre alla comprensione di quei meccanismi molecolari che permettono alla cellula alfa di sopperire, in condizioni fisiologiche, al mancato funzionamento del recettore insulinico. Abbiamo inoltre analizzato l'azione degli ormoni incretinici e dimostrato che le cellule alfa sono in grado di produrre GLP1 e che tale produzione di GLP1 è indotta dall esposizione cronica al GLP1 stesso. Questo aspetto di notevole interesse per la patogenesi del diabete apre a nuovi spunti, la produzione a livello locale di GLP1 potrebbe servire all isola per funzioni di secrezione ma anche per funzioni di trofismo e di sopravvivenza. L'alfa cellula potrebbe dunque aggiungersi alla lista dei tessuti di primo interesse, rendendo ancora più complessa la relazione tra insulino-resistenza, alterazione della funzione dell isola pancreatica e terapia farmacologica.
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HUYNH, NGOC MAI MONICA. « Newton-Krylov Dual-Primal Methods for Implicit Time Discretizations in Cardiac Electrophysiology ». Doctoral thesis, Università degli studi di Pavia, 2021. http://hdl.handle.net/11571/1447636.

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Kermiche, Lamya. « Dynamique de la surface de volatilité implicite ». Grenoble 2, 2007. http://www.theses.fr/2007GRE21036.

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La popularité de la formule de Black et Scholes ne s'est jamais démentie, malgré les écarts constatés entre la réalité et certaines de ses hypothèses. Les modèles de marché ont été proposés pour enrichir ce modèle de base, par la modélisation de la volatilité implicite. L'objet de cette recherche est l'étude empirique de la dynamique de la surface de volatilité implicite. Après avoir étudié chacune des dimensions de la surface séparément, nous avons voulu tenir compte des interactions entre ces dernières. Pour cela, nous avons utilisé une forme fonctionnelle de l'Analyse en Composantes Principales, basée sur une décomposition de Karhunen-Loève. Nous avons ainsi isolé et analysé les principaux facteurs de chocs influençant la surface de volatilité implicite. Nos résultats indiquent un comportement différent des volatilités courtes et longues. En outre, l'étude des séries chronologiques des facteurs obtenus indique que ceux-ci sont bien représentés par des processus à sauts, en particulier le premier facteur, qui représente la variation globale de la surface de volatilité implicite. Nous avons ensuite analysé le contenu informatif de la surface de volatilité implicite, par l'estimation et l'étude des courbes de densité risque neutres. Nous avons ainsi retrouvé les mêmes phénomènes de sauts, dans l'évolution des anticipations des investisseurs. Les applications des modèles proposés sont nombreuses, en particulier pour la gestion du risque en Véga d'un portefeuille d'options, ou encore pour l'évaluation et la couverture d'options exotiques ou de produits dérivés sur la volatilité
The Black and Scholes Formula is very popular among market practitioners, despite the differences between reality and the hypothesis. Market models have been proposed to expand this model, by modelling implied volatility. The aim of this research is the empirical study of the dynamics of the implied volatility surface. After studying each dimension of the surface separately, we incorporated the interactions between them. To perform that, we used a functional form of Principal Component Analysis, based on a Karhunen-Loève decomposition. We isolate and study the most important shocks factors driving the implied volatility surface. Our results suggest different behaving for short and long term volatilities. Studying the time series of the obtained factors, we show that these are well represented by jump processes, particularly the first factor, which represents the global variation of the implied volatility surface. We then analyse the informational content of the implied volatility surface, by estimating and studying risk neutral densities. We find that the same jumps phenomenons are present in changes of investors' anticipations. There are many applications of the proposed models, particularly for Vega hedging of options portfolios, and for the valuation and risk management of exotic options and volatility derivatives
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Livres sur le sujet "Analisi implicita"

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L' implicite. Paris : A. Colin, 1986.

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A, Caughey D., Chima Rodrick V et United States. National Aeronautics and Space Administration., dir. A diagonally inverted LU implicit multigrid scheme. [Washington, D.C.] : National Aeronautics and Space Administration, 1988.

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Dingli, Alexiei. Knowledge Annotation : Making Implicit Knowledge Explicit. Berlin, Heidelberg : Springer Berlin Heidelberg, 2011.

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Krantz, Steven G. The Implicit Function Theorem : History, Theory, and Applications. New York, NY : Springer New York, 2013.

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1935-, Rockafellar R. Tyrrell, et SpringerLink (Online service), dir. Implicit functions and solution mappings : A view from variational analysis. Dordrecht : Springer, 2009.

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A, Crivelli Luis, Roux F. X et United States. National Aeronautics and Space Administration., dir. A transient FETI methodology for large-scale parallel implicit computations in structural mechanics. Boulder, Colo : Center for Space Structures and Controls, College of Engineering, University of Colorado, 1992.

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Yann, Schorderet, dir. Market risk management for hedge funds : Foundations of the style and implicit value-at-risk. John Wiley & Sons : Chichester, West Sussex, England ; Hoboken, NJ, 2008.

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Lassaline, Jason V. A Navier-Stokes equation solver using agglomerated multigrid featuring directional coarsening and line-implicit smoothing. [Downsview, Ont.] : University of Toronto, Institute for Aerospace Studies, 2003.

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Mollo-Bouvier, Suzanne. La sélection implicite à l'école : Pratique du discours et discours de la pratique. Paris : Presses universitaires de France, 1986.

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Mollo-Bouvier, Suzanne. La sélection implicite à l'école : Pratiques du discours et discours de la pratique. Paris : Presses universitaires de France, 1986.

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Chapitres de livres sur le sujet "Analisi implicita"

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Sîntămărian, Alina, et Ovidiu Furdui. « Implicit Functions ». Dans Sharpening Mathematical Analysis Skills, 473–74. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-77139-3_14.

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Sîntămărian, Alina, et Ovidiu Furdui. « Implicit Functions ». Dans Sharpening Mathematical Analysis Skills, 177–86. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-77139-3_6.

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Zeidler, Eberhard. « The Implicit Function Theorem ». Dans Applied Functional Analysis, 225–79. New York, NY : Springer New York, 1995. http://dx.doi.org/10.1007/978-1-4612-0821-1_4.

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Shirali, Satish, et Harkrishan Lal Vasudeva. « Inverse and Implicit Function Theorems ». Dans Multivariable Analysis, 117–50. London : Springer London, 2010. http://dx.doi.org/10.1007/978-0-85729-192-9_4.

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Dontchev, Asen L., et R. Tyrrell Rockafellar. « Applications in Numerical Variational Analysis ». Dans Implicit Functions and Solution Mappings, 363–454. New York, NY : Springer New York, 2014. http://dx.doi.org/10.1007/978-1-4939-1037-3_6.

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Dontchev, Asen L., et R. Tyrrell Rockafellar. « Set-Valued Analysis of Solution Mappings ». Dans Implicit Functions and Solution Mappings, 143–212. New York, NY : Springer New York, 2014. http://dx.doi.org/10.1007/978-1-4939-1037-3_3.

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Varga, Richard S. « Alternating-Direction Implicit Iterative Methods ». Dans Matrix Iterative Analysis, 235–74. Berlin, Heidelberg : Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-05156-2_7.

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Shurman, Jerry. « Inverse and Implicit Functions ». Dans Calculus and Analysis in Euclidean Space, 199–250. Cham : Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-49314-5_5.

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Deimling, Klaus. « Implicit Functions and Problems at Resonance ». Dans Nonlinear Functional Analysis, 146–85. Berlin, Heidelberg : Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-662-00547-7_4.

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Muzeau, J. P., et M. Lemaire. « Reliability Analysis with Implicit Formulations ». Dans Solid Mechanics and Its Applications, 141–60. Dordrecht : Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5614-1_7.

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Actes de conférences sur le sujet "Analisi implicita"

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Pietryga, Michael P., Ivaylo N. Vladimirov et Stefanie Reese. « Influence of Explicit and Implicit Integration of Hyperelastic-Plastic Combined Hardening Models on the Springback in Sheet Forming ». Dans ASME 2014 12th Biennial Conference on Engineering Systems Design and Analysis. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/esda2014-20372.

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In this paper, we investigate the computational efficiency of explicit and implicit integration schemes for hyperelastic-plastic combined hardening plasticity and examine the influence on the simulated springback in sheet metal forming. Due to the deviatoric character of the evolution equations, the finite strain combined hardening model discussed here is integrated by means of the exponential map algorithm in order to fulfil plastic incompressibility. We focus here on different possibilities of evaluating the exponential tensor functions of the material model. One option is to use the spectral decomposition to evaluate the exponential tensor functions in closed form. Alternatively, the latter functions can be evaluated by Taylor series expansion. Furthermore, we examine the potential of an explicit formulation of elasto-plasticity with combined hardening regarding accuracy and efficiency. The material model equations have been implemented as user material subroutines UMAT and VUMAT for use in the commercial solvers ABAQUS/Standard and ABAQUS/Explicit, respectively. The numerical models are applied to the finite element simulation of draw bending, where the forming step is simulated both in implicit and explicit manner, whereas the ensuing springback step is carried out only implicitly.
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Martens, P. « Airplane sizing using implicit mission analysis ». Dans 5th Symposium on Multidisciplinary Analysis and Optimization. Reston, Virigina : American Institute of Aeronautics and Astronautics, 1994. http://dx.doi.org/10.2514/6.1994-4406.

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Eremin, A. S. « Diagonally implicit functional continuous methods ». Dans INTERNATIONAL CONFERENCE OF NUMERICAL ANALYSIS AND APPLIED MATHEMATICS (ICNAAM 2017). Author(s), 2018. http://dx.doi.org/10.1063/1.5043771.

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Correˆa, F. N., et B. P. Jacob. « An Efficient Time-Frequency Domain Solution Procedure for the Analysis of Offshore System ». Dans ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2011. http://dx.doi.org/10.1115/omae2011-50218.

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This work presents a formulation review of a hybrid time-frequency domain Green approach method (HTF-GA) for the solution of offshore systems. A step-by-step time domain solution procedure is established, based on the convolution between the Green functions of the problem and the vector of external loads. The Green functions are implicitly calculated in the frequency-domain. The accuracy is significantly improved when compared with traditional direct integration methods, or with other methods based on the Green approach. This method is able to deal with non-linear behaviour and implicity consider the frequency dependence of added mass and potential damping, encountered in offshore systems problems.
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MUNTEANU, MARILENA, et LUCA FRANCO PAVARINO. « IMPLICIT PARALLEL SOLVERS IN COMPUTATIONAL ELECTROCARDIOLOGY ». Dans Applied Analysis and Differential Equations - The International Conference. WORLD SCIENTIFIC, 2007. http://dx.doi.org/10.1142/9789812708229_0021.

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Conde, Sidafa, Sigal Gottlieb, Zachary J. Grant et John N. Shadid. « Implicit and implicit-explicit strong stability preserving Runge–Kutta methods with high linear order ». Dans INTERNATIONAL CONFERENCE OF NUMERICAL ANALYSIS AND APPLIED MATHEMATICS (ICNAAM 2016). Author(s), 2017. http://dx.doi.org/10.1063/1.4992752.

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Zou, Zhihua, et Edward P. Morse. « Assembleability Analysis Using GapSpace Model for 2D Mechanical Assembly ». Dans ASME 2002 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/detc2002/dfm-34187.

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The most fundamental, and perhaps most important, task in tolerance analysis is to test whether or not the components with tolerances are actually able to fit together. This problem doesn’t get much explicit attention because it is implicitly included in current tolerance analysis methods. However, for complex assemblies, especially for over-constrained assemblies, the implicit assumptions of assembly may not be valid. This paper proposes an assembly model, called GapSpace, which can capture the necessary and sufficient conditions needed to execute assembleability analysis. Assembleability analyses for both nominal components and those with tolerances are presented using the GapSpace model. Both worst case and statistical analyses are performed. The model and its attendant solution methods are more suitable to GD&T tolerancing than traditional plus/minus tolerancing.
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Mulej, Matjaž, Zdenka Zenko et Vojko Potocan. « The Visionary Companies, an Excellent Case of the Informal Systems Thinking ». Dans 2002 Informing Science + IT Education Conference. Informing Science Institute, 2002. http://dx.doi.org/10.28945/2543.

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Systems theory has become a worldview aimed at holism, and a methodology supportive of holism. But it has also become a sophisticated mathematical and philosophical approach, which limits it to rather few intellectuals and systems theorists. This is not enough for humankind to do well. An insight into the most successful companies, called the visionary companies in the analysis briefed here, let us see that an informal, implicit, indirect, systems thinking might be as important as the systems theory (which still remains important as its aide). The point is double, at least: (1) systems thinking practices holistic thinking that implicitly attains the requisite holism on a high level, (2) systems theory is not a theory aimed at itself, but at supporting the holistic rather than one-sided thinking, by building bridges between mutually different specialists. Informal, implicit systems thinking can do equally much good as the one backed by systems theory.
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Conte, Dajana, Raffaele D’Ambrosio, Maria Pia D’Arienzo et Beatrice Paternoster. « Semi-implicit multivalue almost collocation methods ». Dans INTERNATIONAL CONFERENCE OF NUMERICAL ANALYSIS AND APPLIED MATHEMATICS ICNAAM 2020. AIP Publishing, 2022. http://dx.doi.org/10.1063/5.0081531.

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Yin, Wenbiao, et Lin Shang. « ContextBert : Enhanced Implicit Sentiment Analysis Using Implicit-sentiment-query Attention ». Dans 2022 International Joint Conference on Neural Networks (IJCNN). IEEE, 2022. http://dx.doi.org/10.1109/ijcnn55064.2022.9892878.

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Rapports d'organisations sur le sujet "Analisi implicita"

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Paganini, Fernando, et John Doyle. Analysis of Implicit Uncertain Systems. Part 1 : Theoretical Framework. Fort Belvoir, VA : Defense Technical Information Center, décembre 1994. http://dx.doi.org/10.21236/ada464757.

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Paganini, Fernando. Analysis of Implicit Uncertain Systems. Part 2 : Constant Matrix Problems and Application to Robust H2 Analysis. Fort Belvoir, VA : Defense Technical Information Center, décembre 1994. http://dx.doi.org/10.21236/ada464793.

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Campbell, Stephen L. The Numerical and Analytic Analysis of Implicit Differential Equations and Their Application to Control and Circuit Problems. Fort Belvoir, VA : Defense Technical Information Center, janvier 1987. http://dx.doi.org/10.21236/ada185531.

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Möllenkamp, Andreas. Paradigms of Music Software Development. Staatliches Institut für Musikforschung, décembre 2014. http://dx.doi.org/10.25366/2022.99.

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On the way to a more comprehensive and integrative historiography of music software, this paper proposes a survey of the main paradigms of music software development from the 1950s to the present. Concentrating on applications for music composition, production and performance, the analysis focusses on the concept and design of the human-computer-interaction as well as the implicit user.
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Moriguchi, Chiaki. Implicit Contracts, the Great Depression, and Institutional Change : A Comparative Analysis of U.S. and Japanese Employment Relations, 1920-1940. Cambridge, MA : National Bureau of Economic Research, mars 2003. http://dx.doi.org/10.3386/w9559.

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Allado, Armin Paul, Lance Nicklaus Lim, Neri Angelie Tulauan, Marvin Kyle Abreu, Patricia Louise Agabin et Jaoquin Charles Regio. Construction of an Index Tracker for Debt Sustainability Assessment in the Philippines. Asian Development Bank Institute, octobre 2022. http://dx.doi.org/10.56506/lpbc3497.

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With economies around the world facing more dire challenges as an immediate result of the COVID-19 pandemic, the need for national governments to borrow funds has grown. The abrupt increase in debt level highlights the importance of implementing suitable models to project emerging debt scenarios and assess debt sustainability. Given that sustainable debt levels vary from country to country, we applied the IMF’s Debt Sustainability Analysis to assess the Philippines’ debt burden over time to be used as an input in the construction of a debt index tracker that incorporates other relevant fiscal and economic indicators. The index tracker serves as an aggregate barometer on whether debt levels have breached the sustainable threshold level. Furthermore, we will utilize the debt tracker to show the implicit debt ceiling and the available fiscal policy room that can respond to the next potential shock.
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Bull, Benedicte. ¿Un compromiso social para el Antropoceno ? Reacciones de las élites al Acuerdo de Escazú y las posibilidades de un Estado verde transformador latinoamericano. Fundación Carolina, octobre 2022. http://dx.doi.org/10.33960/issn-e.1885-9119.dtfo07.

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El mundo enfrenta con urgencia la necesidad de una “transformación verde”, que implica no solo una transición hacia el uso de energías renovables y la reducción de la pérdida de biodiversidad, sino también un profundo cambio social hacia la justicia social y la sostenibilidad. Ello requiere de compromisos sociales entre élites y sectores populares que permitan construir instituciones fuertes para implementar cambios. América Latina afronta enormes desafíos para aumentar la igualdad, la justicia y la sostenibilidad, pero también puede jugar un papel fundamental en la transformación verde global. La región también se caracteriza por tener élites robustas, fuertes movimientos socioambientales y profundos conflictos ambientales, que dificultan los compromisos sociales. Este documento analiza las reacciones de las élites al acuerdo regional más avanzado sobre regulación ambiental y resolución de conflictos, el Acuerdo de Escazù. En muchos países, las élites se opusieron con vehemencia, arguyendo la injerencia sobre su soberanía nacional, pero rechazando particularmente las implicaciones institucionales del acuerdo que suponen un mayor compromiso para permitir la participación popular. A esto se opusieron las élites económicas de los países democráticos (Chile, Colombia, Costa Rica y Perú), así como las élites gubernamentales de los países autoritarios (El Salvador y Venezuela). Sin embargo, en varios casos, la oposición de las élites fue superada gracias a la movilización social y al diálogo. Este documento analiza los aprendizajes de las reacciones de las élites al Acuerdo de Escazú ante futuros compromisos sociales como base para el surgimiento de Estados transformadores en América Latina.
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Segovia, Alexander. Centroamérica en su laberinto : reflexiones sobre la naturaleza de la crisis y criterios para abordarla. Fundación Carolina, juillet 2022. http://dx.doi.org/10.33960/issn-e.1885-9119.dt72.

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El presente documento aborda la crisis centroamericana, subrayando su larga gestación, los factores que han intervenido en su desarrollo y las particularidades que la diferencian de otras experiencias internacionales. Analiza, además, las dificultades y retos que existen para avanzar en soluciones basadas en acuerdos políticos y presenta algunas reflexiones sobre aspectos relevantes que podrían considerarse a la hora de diseñar estrategias encaminadas para superarla. Se argumenta que la mejor manera de enfrentar la crisis centroamericana es invirtiendo en la defensa, promoción y fortalecimiento de actores sociales y políticos democráticos y en la creación y/o fortalecimiento de la institucionalidad democrática en el ámbito nacional y local, lo cual supone “repolitizar” la cooperación internacional, como ocurrió en la década de los ochenta del siglo pasado, cuando los actores externos invirtieron en el fortalecimiento de los actores políticos y sociales que estaban a favor de la paz y de la instauración de nuevos modelos económicos. Esta repolitización de la cooperación internacional no implica el abandono de los intereses y los objetivos legítimos que los actores externos tienen en Centroamérica, sino más bien enmarcarlos en una visión integral y comprehensiva basada en la defensa y el fortalecimiento de la democracia centroamericana.
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Guppy, Lisa, Paula Uyttendaele, Karen Villholth et Vladimir Smakhtin. Groundwater and Sustainable Development Goals : Analysis of Interlinkages. United Nations University Institute for Water, Environment and Health, décembre 2018. http://dx.doi.org/10.53328/jrlh1810.

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Groundwater represents 97% of the world’s available freshwater resources and is extensively abstracted throughout the world. While abundant in a global context, it can only de developed to a certain extent without causing environmental impacts. Also, it is highly variable across the globe, and where it is heavily relied on, it is less renewable. Hence, it is critically important that this resource is managed sustainably. However, the Sustainable Development Goals (SDGs) of the 2030 Development Agenda do not, as a rule, account explicitly for the significant role that groundwater plays and will continue to play in sustainable development. This report aims to unpack and highlight this role through consistent analysis of the interlinkages between groundwater and the targets of the SDGs. The key features of groundwater relevant to the SDGs are its use, management and sustainability. The methodology used to analyse groundwater interlinkages with SDG targets includes, first, identification of ‘evidence-based’ and ‘logical’ interlinkages. The first type of interlinkages is supported by existing data, while the second is by information and logic that needs to be drawn from existing bodies of relevant research. While only a few interlinkages may be seen at present as “evidence-based”, more data are continuously emerging to make more interlinkages supported by hard-core evidence. Subsequently, the interlinkages are classified into either ‘reinforcing’, ‘conflicting’ or ‘mixed’ – depending on whether achievement of a target will have predominantly positive, negative, or mixed impact on groundwater. The interlinkages are also classified into ‘primary’ and ‘secondary’, depending on how strong and direct the impacts on groundwater from achieving the targets may be. The report presents a summary of key interlinkages, and subsequently provides the narrative of all ‘primary’ ones. The analysis suggests that more than half of interlinkages are ‘reinforcing’, while only a few are ‘conflicting’. From a policy perspective i) conflicting interlinkages are the most critical and difficult ones to manage, and ii) it is important to draw synergies between SDG initiatives and groundwater to allow reinforcing interlinkages to materialise. Nearly a third of all identified interlinkages were classified as ‘mixed’. This means that when target activities are planned, careful consideration must be given to possible impacts on groundwater to avoid unintended negative outcomes that may not be evident at first. Primary interlinkages that constitute 43% of all may be the easiest to understand and the most important to plan for. However, there are even more secondary interlinkages. This means that groundwater experts need to be able to share knowledge to a range of actors involved in addressing the targets with secondary interlinkages to groundwater, and vice versa. It is also shown that i) the importance of groundwater to sustainable development is poorly recognised and captured at the SDG target level; ii) there is a lack of globally useful, up-to-date and SDG-relevant groundwater data available, which makes it difficult to make globally, and even locally, relevant recommendations for groundwater use, management and sustainability in the SDG era, and iii) there are often poor links between targets and their indicators. This may signal that all groundwater-related and groundwater-relevant aspirations may not be translated into real, let alone, measurable action. This report is not a comprehensive analysis and involves an element of subjectivity, associated primarily with the data and information paucity on one hand, and with the imperfection of the SDG target and indicator system itself – on another. However, even with these limitations, the report shows how significant groundwater is in sustainable development, even if the current SDG framework is implicit about this. Furthermore, it suggests a structured way to improve the visibility of groundwater in the SDG framework as it continues to develop.
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Finkelshtain, Israel, et Tigran Melkonyan. The economics of contracts in the US and Israel agricultures. United States Department of Agriculture, février 2008. http://dx.doi.org/10.32747/2008.7695590.bard.

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Research Objectives 1) Reviewing the rich economic literature on contracting and agricultural contracting; 2) Conducting a descriptive comparative study of actual contracting patterns in the U.S. and Israeli agricultural sectors; 3) Theoretical analysis of division of assets ownership, authority allocation and incentives in agricultural production contracts; 4) Theoretical analysis of strategic noncompetitive choice of agricultural production and marketing contracts, 5) Empirical studies of contracting in agricultural sectors of US and Israel, among them the broiler industry, the citrus industry and sugar beet sector. Background Recent decades have witnessed a world-wide increase in the use of agricultural contracts. In both the U.S. and Israel, contracts have become an integral part of production and marketing of many crops, fruits, vegetables and livestock commodities. The increased use of agricultural contracts raises a number of important economic policy questions regarding the optimal design of contracts and their determinants. Even though economists have made a substantial progress in understanding these issues, the theory of contracts and an empirical methodology to analyze contracts are still evolving. Moreover, there is an enormous need for empirical research of contractual relationships. Conclusions In both U.S. and Israel, contracts have become an integral part of production and marketing of many agricultural commodities. In the U.S. more than 40% of the value of agricultural production occurred under either marketing or production contracts. The use of agricultural contracts in Israel is also ubiquitous and reaches close to 60% of the value of agricultural production. In Israel we have found strategic considerations to play a dominant role in the choice of agricultural contracts and may lead to noncompetitive conduct and reduced welfare. In particular, the driving force, leading to consignment based contracts is the strategic effect. Moreover, an increase in the number of contractors will lead to changes in the terms of the contract, an increased competition and payment to farmers and economic surplus. We found that while large integrations lead to more efficient production, they also exploit local monopsonistic power. For the U.S, we have studied in more detail the choice of contract type and factors that affect contracts such as the level of informational asymmetry, the authority structure, and the available quality measurement technology. We have found that assets ownership and decision rights are complements of high-powered incentives. We have also found that the optimal allocation of decision rights, asset ownership and incentives is influenced by: variance of systemic and idiosyncratic shocks, importance (variance) of the parties’ private information, parameters of the production technology, the extent of competition in the upstream and downstream industries. Implications The primary implication of this project is that the use of agricultural production and marketing contracts is growing in both the US and Israeli agricultural sectors, while many important economic policy questions are still open and require further theoretical and empirical research. Moreover, actual contracts that are prevailing in various agricultural sectors seems to be less than optimal and, hence, additional efforts are required to transfer the huge academic know-how in this area to the practitioners. We also found evidence for exploitation of market powers by contactors in various agricultural sectors. This may call for government regulations in the anti-trust area. Another important implication of this project is that in addition to explicit contracts economic outcomes resulting from the interactions between growers and agricultural intermediaries depend on a number of other factors including allocation of decision and ownership rights and implicit contracting. We have developed models to study the interactions between explicit contracts, decision rights, ownership structure, and implicit contracts. These models have been applied to study contractual arrangements in California agriculture and the North American sugarbeet industry.
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