Bibliographies thématiques / Somme des carrés

Littérature scientifique sur le sujet « Somme des carrés »

Auteur : Grafiati
Publié le 25 mai 2024

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Articles de revues sur le sujet "Somme des carrés"

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Mauduit, Christian, et Joël Rivat. « La somme des chiffres des carrés ». Acta Mathematica 203, no 1 (2009) : 107–48. http://dx.doi.org/10.1007/s11511-009-0040-0.

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Fuchs, Aimé, et Anatole Joffe. « Formule exacte de l'espérance du rapport de la somme des carrés par le carré de la somme ». Comptes Rendus de l'Académie des Sciences - Series I - Mathematics 325, no 8 (octobre 1997) : 907–9. http://dx.doi.org/10.1016/s0764-4442(97)80136-x.

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Bahouri, Hajer. « Non prolongement unique des solutions d'opérateurs «somme de carrés» ». Annales de l’institut Fourier 36, no 4 (1986) : 137–55. http://dx.doi.org/10.5802/aif.1071.

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Lerman, I. C., et Ph Peter. « Structure maximale pour la somme des carrés d'une contingence aux marges fixées ; une solution algorithmique programmée ». RAIRO - Operations Research 22, no 2 (1988) : 83–136. http://dx.doi.org/10.1051/ro/1988220200831.

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Dusabenyagasani, M., R. C. Hamelin, J. Collin et D. Dostaler. « Importance de l’intéraction entre les cultivars de blé et les souches du Fusarium graminearum dans l’évaluation de la résistance à la fusariose de l’épi ». Phytoprotection 78, no 2 (12 avril 2005) : 53–60. http://dx.doi.org/10.7202/706119ar.

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Des expériences factorielles ont été réalisées au champ à deux stations, le campus de l'Université Laval en 1991 et 1992 et la ferme de Saint-Louis-de-Pintendre en 1992 et 1993, pour préciser si le développement de la fusariose de l'épi du blé est influencé par l'interaction entre les cultivars et les souches du Fusarium graminearum. Neuf souches du F. graminearum ont été inoculées à onze cultivars de blé (Triticum aestivum) et un cultivar de triticale (x Triticosecale) représentatifs de la gamme de sensibilité à cette maladie au Québec. L'analyse de la variance combinée a mis en évidence des interactions significatives entre les cultivars, les souches et les environnements. Les interactions cultivars x souches et cultivars x environnements expliquent une faible proportion de la somme des carrés totale et n'entraînent pas de modifications majeures dans le classement moyen de la sensibilité des cultivars. Concernant l'interaction cultivars x souches, le classement moyen de la sensibilité des cultivars, notamment Casavant et Concorde, variait avec les souches. Cette recherche contre pour la première fois que l'importance relative des différentes interactions entre les souches, les cultivars et les environnements est comparable dans l'évaluation de la résistance à la fusariose de l'épi du blé.
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Cailleux, André, Louis-Edmond Hamelin et Yves Cartier. « Aspects morphologiques du Carré Roc, Poste-de-la-Baleine, Nouveau-Québec ». Cahiers de géographie du Québec 12, no 26 (12 avril 2005) : 235–45. http://dx.doi.org/10.7202/020809ar.

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Les auteurs ont fait l'étude détaillée du sommet d'une colline rocheuse, au nord-est de Poste-de-la-Baleine, Nouveau-Québec, selon la méthode des carrés. Il s'agit de délimiter un territoire de 100 m, par 100 m de côté, de le diviser en carrés décamétriques et métriques et d'en analyser le contenu. Cet article nous décrit quelques aspects de la morphologie du carré Roc, caractéristique de celle de la région : la structure, la pente relativement douce des rochers plus ou moins dénudés, les nappes d'eau stagnante nombreuses mais petites, le faible nombre des rocs détritiques.
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Weimer, Adrian Chastain. « Huguenot Refugees and the Meaning of Charity in Early New England ». Church History 86, no 2 (juin 2017) : 365–97. http://dx.doi.org/10.1017/s0009640717000580.

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Huguenot suffering inspired fast days, prayer meetings, and collections among Congregationalists in Massachusetts and Plymouth in the 1680s. Ministers used a variety of frameworks to motivate compassion for the French refugees. Some preachers considered the French plight to be the result of an Antichristian attack, one that might soon spread to New England. Others assumed Huguenot suffering generally was a result of their sinful neglect of the Sabbath, and that compassion and honor should extend to those who suffered cheerfully while upholding disciplined purity. As suspicions mounted that there were French Catholic spies within the refugee communities and local harassment increased, the prominent Huguenot minister Ezekiel Carré advocated an alternate framework for Christian charity. In his remarkable sermon,The Charitable Samaritan, Carré shifted the meaning of charity from an apocalyptic framework to one centered on active mercy for the wounded regardless of sect or nationality. A friend of Carré’s and Huguenot supporter, Cotton Mather incorporated Carré’s interpretation of the Samaritan story into his magisterial Bible commentary. Though always contested, Huguenot practices and rhetoric broadened the conversation over the meaning of charity in early New England.
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Bony, Jean-Michel. « Sommes de carrés de fonctions dérivables ». Bulletin de la Société ; mathématique de France 133, no 4 (2005) : 619–39. http://dx.doi.org/10.24033/bsmf.2499.

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Hézard, David. « Sommes de carrés dans un corps fini ». Quadrature, no 76 (18 mars 2010) : 44–48. http://dx.doi.org/10.1051/quadrature/2010004.

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Simon, Odile. « Algorithme de multiplicativité des sommes de carrés ». RAIRO - Theoretical Informatics and Applications 26, no 6 (1992) : 485–506. http://dx.doi.org/10.1051/ita/1992260604851.

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Thèses sur le sujet "Somme des carrés"

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Vu, Trung-Hieu. « Certified Polynomial Optimization Based on Exact Sum of Squares Decompositions ». Electronic Thesis or Diss., Sorbonne université, 2022. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2022SORUS365.pdf.

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L'objectif de cette thèse est de calculer des certificats exacts de non-négativité pour des polynômes. Ces certificats sont basés sur des décompositions de la somme des carrés avec des coefficients rationnels. Nous fournissons des algorithmes symboliques pour calculer les décompositions de la somme des carrés modulo l'idéal gradient des polynômes multivariés réels non négatifs sous une condition de généricité. Ces algorithmes peuvent s'attaquer à un large éventail de problèmes qui sont hors de portée des algorithmes de l'état de l'art. Nous calculons également les sommes des décompositions des carrés hermitiens pour les polynômes trigonométriques complexes univariés qui sont positifs sur le cercle unité avec des coefficients gaussiens. De plus, nous analysons la complexité binaire de ces algorithmes et déduisons les limites de taille binaire de ces certificats. Enfin, nous implémentons ces algorithmes dans le système de calcul formel Maple et l'environnement de programmation Julia et nous évaluons leurs performances sur quelques benchmarks standards
The aim of this thesis is to compute exact certificates of non-negativity for polynomials based on sum of squares decompositions with rational coefficients. We provide symbolic algorithms to compute sum of squares decompositions modulo the gradient ideal of non-negative real multivariate polynomials under a genericity condition. These algorithms can tackle a large range of problems which are out of reach for state-of-the-art algorithms. We also compute sums of Hermitian squares decompositions for complex trigonometric univariate polynomials that are positive on the unit circle with Gaussian coefficients. Moreover, we analyze the bit complexity of these algorithms and deduce bitsize bounds of such certificates. Finally, we implement these algorithms in the computer algebra system Maple and the programming environment Julia and evaluate their performance on some standard benchmarks
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Moreira, Nunes Ramon. « Problèmes d’équirépartition des entiers sans facteur carré ». Thesis, Paris 11, 2015. http://www.theses.fr/2015PA112123/document.

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Cette thèse concerne quelques problèmes liés à la répartition des entiers sans facteur carré dansles progressions arithmétiques. Ces problèmes s’expriment en termes de majorations du terme d’erreurassocié à cette répartition.Les premier, deuxième et quatrième chapitres sont concentrés sur l’étude statistique des termesd’erreur quand on fait varier la progression arithmétique modulo q. En particulier on obtient une formuleasymptotique pour la variance et des majorations non triviales pour les moments d’ordre supérieur. Onfait appel à plusieurs techniques de théorie analytique des nombres comme les méthodes de crible et lessommes d’exponentielles, notamment une majoration récente pour les sommes d’exponentielles courtesdue à Bourgain dans le deuxième chapitre.Dans le troisième chapitre on s’intéresse à estimer le terme d’erreur pour une progression fixée. Onaméliore un résultat de Hooley de 1975 dans deux directions différentes. On utilise ici des majorationsrécentes de sommes d’exponentielles courtes de Bourgain-Garaev et de sommes d’exponentielles torduespar la fonction de Möbius dues à Bourgain et Fouvry-Kowalski-Michel
This thesis concerns a few problems linked with the distribution of squarefree integers in arithmeticprogressions. Such problems are usually phrased in terms of upper bounds for the error term relatedto this distribution.The first, second and fourth chapter focus on the satistical study of the error terms as the progres-sions varies modulo q. In particular we obtain an asymptotic formula for the variance and non-trivialupper bounds for the higher moments. We make use of many technics from analytic number theorysuch as sieve methods and exponential sums. In particular, in the second chapter we make use of arecent upper bound for short exponential sums by Bourgain.In the third chapter we give estimates for the error term for a fixed arithmetic progression. Weimprove on a result of Hooley from 1975 in two different directions. Here we use recent upper boundsfor short exponential sums by Bourgain-Garaev and exponential sums twisted by the Möbius functionby Bourgain et Fouvry-Kowalski-Michel
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Omran, Hassan. « Contribution à la commande de systèmes non linéaires sous échantillonnage apériodique ». Thesis, Ecole centrale de Lille, 2014. http://www.theses.fr/2014ECLI0005/document.

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Cette thèse est dédiée à l’analyse de stabilité des systèmes non linéaires sous échantillonnage variant avec le temps. Lors de l’implémentation numérique d’un contrôleur qui est calculé en temps-continu (approche par émulation), il est d'un grand intérêt de fournir des critères de stabilité et d’estimer la borne supérieure de l’intervalle d’échantillonnage qui garantit la stabilité du système en temps discret. Plusieurs travaux récents ont abordé ces questions dans le cas de modèles linéaires, mais la question a rarement été abordée dans une étude quantitative et formelle pour les systèmes non linéaires.Tout d'abord, le mémoire présente un aperçu sur les systèmes échantillonnés. Les défis et les principales méthodes pour l'analyse de stabilité sont présentés pour le cas des systèmes linéaires invariants dans le temps et celui des systèmes non linéaires. Ensuite, l’analyse de la stabilité locale des systèmes bilinéaires échantillonnés contrôlés par un retour d'état linéaire est considérée. Deux approches sont utilisées, la première basée sur la théorie des systèmes hybrides, la seconde basée sur l’analyse des ensembles invariants contractants. Cette dernière approche est inspirée par la théorie de la dissipativité. L’ensemble de ces résultats conduisent à des conditions suffisantes de stabilité exprimées sous forme LMI.Enfin, les conditions de stabilité basées sur la dissipativité sont étendues au cas des systèmes non linéaires affines en l'entrée. Les résultats sont ensuite repris dans le cas spécifique des systèmes non linéaires polynomiaux où les conditions de stabilité sont vérifiées numériquement en utilisant la décomposition en somme des carrés (SOS)
This PhD thesis is dedicated to the stability analyzis of nonlinear systems under sampled-data control, with arbitrarily time-varying sampling intervals. When a controller is designed in continuous-time, and then implemented digitally (emulation approach), it is of great interest to provide stability criteria, and to estimate the bound on the sampling intervals which guarantees the stability of the sampled-data system. Whereas several works deal with linear models, the issue has been rarely addressed in a formal quantitative study in the nonlinear case.First, an overview on sampled-data control is presented. Challenges and main methodologies for stability analysis are presented for both the linear time-invariant and the nonlinear cases.Then, local stability of bilinear sampled-data systems controlled by a linear state feedback is considered by using two approaches: the first one is based on hybrid systems theory; the second one is based on the analyzis of contractive invariant sets and is inspired by the dissipativity theory. Both approaches provide sufficient stability conditions in the form of LMI.Finally, the dissipativity–based stability conditions are extended for the more general case of nonlinear systems which are affine in the input, including the case of polynomial systems which leads to conditions in the form of sum of squares (SOS)
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Beeckmans, Laurent. « Equations de Pell, sommes des carrés consécutifs et conjecture d'Erdös ». Doctoral thesis, Universite Libre de Bruxelles, 1995. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/212538.

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Macé, Olivier. « Sommes de trois carrés en deux variables et représentation de bas degré pour le niveau des courbes réelles ». Phd thesis, Université Rennes 1, 2000. http://tel.archives-ouvertes.fr/tel-00006239.

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Dans l'esprit du théorème de Cassels, Ellison et Pfister qui démontre que le polynôme de Motzkin est une somme de 4 carrés et pas de 3 carrés de fractions dans R(X,Y), on construit des familles de polynômes de ce type de la forme Y^4+A(X)Y^2+B(X). La méthode est une extension de celle de Cassels, Ellison et Pfister : 2-descentes sur des courbes elliptiques.
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Magron, Victor. « Preuves formelles pour l'optimisation globale -- Méthodes de gabarits et sommes de carrés ». Phd thesis, Ecole Polytechnique X, 2013. http://pastel.archives-ouvertes.fr/pastel-00917779.

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Cette thèse a pour but de certifier des bornes inférieures de fonctions multivariées à valeurs réelles, définies par des expressions semi-algébriques ou transcendantes et de prouver leur validité en vérifiant les certificats dans l'assistant de preuves Coq. De nombreuses inégalités de cette nature apparaissent par exemple dans la preuve par Thomas Hales de la conjecture de Kepler. Dans le cadre de cette étude, on s'intéresse à des fonctions non-linéaires, faisant intervenir des opérations semi-algébriques ainsi que des fonctions transcendantes univariées (cos, arctan, exp, etc). L'utilisation de différentes méthodes d'approximation permet de relâcher le problème initial en un problème d'optimisation semi-algébrique. On se ramène ainsi à des problèmes d'optimisation polynomiale, qu'on résout par des techniques de sommes de carrés creuses. Dans un premier temps, nous présentons une technique classique d'optimisation globale. Les fonctions transcendantes univariées sont approchées par les meilleurs estimateurs polynomiaux uniformes de degré d. Par la suite, nous présentons une méthode alternative, qui consiste a borner certains des constituants de la fonction non-linéaire par des suprema de formes quadratiques (approximation maxplus, introduite à l'origine en contrôle optimal) de courbures judicieusement choisies. Enfin, cet algorithme d'approximation est amélioré, en combinant l'idée des estimateurs maxplus et de la méthode des gabarits développée par Manna et al. (en analyse statique). Les gabarits non-linéaires permettent un compromis sur la precision des approximations maxplus afin de contrôler la complexité des estimateurs semi-algébriques. Ainsi, on obtient une nouvelle technique d'optimisation globale, basée sur les gabarits, qui exploite à la fois la precision des sommes de carrés et la capacité de passage à l'échelle des méthodes d'abstraction. L'implémentation de ces méthodes d'approximation a abouti à un outil logiciel : NLCertify. Cet outil génère des certificats à partir d'approximations semi-algébriques et de sommes de carrés. Son interface avec Coq permet de bénéficier de l'arithmétique certifiée disponible dans l'assistant de preuves, et ainsi d'obtenir des estimateurs et des bornes valides pour chaque approximation. Nous démontrons les performances de cet outil de certification sur divers problèmes d'optimisation globale ainsi que sur des inégalités serrées qui interviennent dans la preuve de Hales.
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SIMON, HAMON ODILE. « Aspects quantitatifs de stellensaetze et algorithmes de multiplicativite des sommes de carres ». Rennes 1, 1987. http://www.theses.fr/1987REN10039.

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Le premier chapitre de cette these a pour objet de demontrer plusieurs stellensaetze quantitatifs, d'une part geometriques, d'autre part, formels pour une classe assez vaste, t::(d') d'entier naturel, d'algebres sur un corps reel clos k, une k-algebre a appartient a t::(d) si un certain degre de transcendance de a sur k, qu'on definit, est majore par d. Dans le second chapitre, on construit plusieurs algorithmes de calcul effectif, implementes sur multics, a l'aide de macsyma. Si k est un corps, ou 2 est inversible, f et c des elements de k(x,y), ils permettent d'obtenir : 1) un theoreme effectif de la norme : sous certaines hyportheses, si f divise l+m carres dans k(x,y)/c, alors la norme de f divise l+m carres dans k(x). 2) une "formule du produit" dans k(x), puis dans k(x,y)/c, soit en utilisant le l), soit par calcul modulaire
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Aaltonen, Antti S. « Natural immunity in dental caries longitudinal studies of serum and salivary antibodies reactive with Streptococcus mutans in young children in relation to dental caries and some maternal factors / ». Turku, Finland : University of Turku, Institute of Dentistry, 1989. http://catalog.hathitrust.org/api/volumes/oclc/20115011.html.

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Pasca, Bogdan Mihai. « Calcul flottant haute performance sur circuits reconfigurables ». Phd thesis, Ecole normale supérieure de lyon - ENS LYON, 2011. http://tel.archives-ouvertes.fr/tel-00654121.

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De plus en plus de constructeurs proposent des accélérateurs de calculs à base de circuits reconfigurables FPGA, cette technologie présentant bien plus de souplesse que le microprocesseur. Valoriser cette flexibilité dans le domaine de l'accélération de calcul flottant en utilisant les langages de description de circuits classiques (VHDL ou Verilog) reste toutefois très difficile, voire impossible parfois. Cette thèse a contribué au développement du logiciel FloPoCo, qui offre aux utilisateurs familiers avec VHDL un cadre C++ de description d'opérateurs arithmétiques génériques adapté au calcul reconfigurable. Ce cadre distingue explicitement la fonctionnalité combinatoire d'un opérateur, et la problématique de son pipeline pour une précision, une fréquence et un FPGA cible donnés. Afin de pouvoir utiliser FloPoCo pour concevoir des opérateurs haute performance en virgule flottante, il a fallu d'abord concevoir des blocs de bases optimisés. Nous avons d'abord développé des additionneurs pipelinés autour des lignes de propagation de retenue rapides, puis, à l'aide de techniques de pavages, nous avons conçu de gros multiplieurs, possiblement tronqués, utilisant des petits multiplieurs. L'évaluation de fonctions élémentaires en flottant implique souvent l'évaluation en virgule fixe d'une fonction. Nous présentons un opérateur générique de FloPoCo qui prend en entrée l'expression de la fonction à évaluer, avec ses précisions d'entrée et de sortie, et construit un évaluateur polynomial optimisé de cette fonction. Ce bloc de base a permis de développer des opérateurs en virgule flottante pour la racine carrée et l'exponentielle qui améliorent considérablement l'état de l'art. Nous avons aussi travaillé sur des techniques de compilation avancée pour adapter l'exécution d'un code C aux pipelines flexibles de nos opérateurs. FloPoCo a pu ainsi être utilisé pour implanter sur FPGA des applications complètes.
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Lindquist, Birgitta. « Mutans streptococci in human dentition some factors influencing colonization and distribution / ». Göteborg : University of Göteborg, 1991. http://catalog.hathitrust.org/api/volumes/oclc/25383720.html.

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Livres sur le sujet "Somme des carrés"

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Taylor, Dan. Shoebox : Some of the best : from America's funniest card company. [Place of publication not identified] : Hallmark Licensing, Inc., 2007.

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Lyman, Benjamin Smith. Some illustrations of the influence of geological structure on topogragphy. [S.l : s.n., 1987.

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Turull i Crexells, Isabel. Carles Riba i la llengua literària durant el franquisme. Venice : Edizioni Ca' Foscari, 2018. http://dx.doi.org/10.30687/978-88-6969-309-0.

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Carles Riba, one of the most relevant personalities in Catalan letters, not only as a poet but also as a linguist, has been considered a difficult writer. This book aims to examine how his theoretical preparation and his ideas in linguistics influenced his work in the particular case of some early stories in which he tries “uns utilíssims exercicis de simplicitat”. Carles Riba did not present his linguistic theories in a single text in a complete and articulated way but we can evaluate them in various papers he wrote and published up until his death in 1959. The first part of this work, after an introduction which sets the author in the context of European linguistics, is a review of the ideas that can be found in the collections of essays: Escolis i altres articles (1921), Els marges (1927), Per comprendre (1937), ... més els poemes (1957), and in a few other particularly interesting papers.This part focuses also on some of the controversies in which Carles Riba is involved as a linguist during the spanish dictatorship: especially his role on the publication of the second edition of Pompeu Fabra’s dictionary in 1954 and the consequences of the prologue he wrote for the volume. Joan Coromines considers an attack on the linguist Pompeu Fabra the negative comparison Riba proposes with the honnête homme: in our research we re-evaluate this consideration and analyse the historical and semantic value of this expression belonging to 17th-century French culture.The second part of this paper is a strictly linguistic analysis of three texts, chosen among Carles Riba’s works for children. The interest of those texts is in the author’s deliberate intent of using the most simple language, which enables us to determine what he considers the basic aspects of linguistic quality. Furthermore, the existence of different editions of those texts permits a philological analysis of those versions showing Carles Riba’s ‘simple’ language in three very representative moments, from the beginning of his career as a writer to the difficult situation during the dictatorship.
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Gilbert, Davies. Some Ancient Christmas Carols, with the Tunes to Which They Were Formerly Sung in the West of England. University of Cambridge ESOL Examinations, 2014.

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Some Ancient Christmas Carols, with the Tunes to Which They Were Formerly Sung in the West of England. Cambridge University Press, 2013.

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Dale, Elizabeth. Spelunking, or, Some Meditations on the New Presentism. Sous la direction de Markus D. Dubber et Christopher Tomlins. Oxford University Press, 2018. http://dx.doi.org/10.1093/oxfordhb/9780198794356.013.16.

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This chapter reflects on New Presentism and its implications for legal historians. The proponents of New Presentism believe that legal historians have an obligation to use their training to help society. This belief has its roots in Plato’s allegory of the cave, in book VII of The Republic. There, those who were removed from their chains and brought out of the cave into the world of light were expected to return to the darkness of the cave to teach those left behind. Education, represented in the allegory by the chance to go out of the cave into the light, brought with it responsibility to share the knowledge gained from exposure to the reality behind the shadows. However, the allegory of the cave also raises some cautions that we would do well to consider. The responsibility to return to the cave is a responsibility that carries with it serious costs.
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White, Stephen K. Contemporary Continental Political Thought. Sous la direction de George Klosko. Oxford University Press, 2011. http://dx.doi.org/10.1093/oxfordhb/9780199238804.003.0027.

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“Continental philosophy” is generally understood as a contrast term for “Anglo-American analytic philosophy.” On its face, we seem to have a distinction rooted in geography, the continent in question being Europe. What is the relationship between Continental philosophy and Continental political philosophy—more frequently called Continental political thought (CPT)? There is the common postulation that modern Western social life, despite its many achievements, carries within it a certain “malignancy.” A tool frequently used by CPT is a skepticism of Enlightenment universalism in relation to ethical and political life. Given CPT's postulation of some sort of malignancy in modern Western society, it is hardly surprising that there is usually also sustained attention given to the possibility of some transformation that will overcome or at least combat more effectively the danger or harm that malignancy carries with it.
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Jarin, Nijhof. Part II Commentaries to Typical Sofa Rules, 19 Arms. Oxford University Press, 2018. http://dx.doi.org/10.1093/law/9780198808404.003.0019.

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This chapter turns to the right to carry arms. The matter of whether foreign forces can carry weapons in the execution of their duties touches upon the core of State sovereignty. Governments have the monopoly of the legitimate use of physical force within their territory. On the other hand, the right to carry arms is essential to armed forces in order to successfully execute their mission. While the Receiving State can be deemed to have consented to such right when agreeing to a military force on its territory, matters such as the scope of the right to carry arms remain subject to agreement between the States. Force security aspects deserve some discussion as to the responsibilities of the Receiving State and Sending States. Also the legal limitations on the use of force require specific attention, as well as the rules of the Receiving State regarding the importation of arms.
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Gunning, Mark, et Chee Wah Khoo. Coronary artery perforation. Sous la direction de Simon Redwood, Nick Curzen et Adrian Banning. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780198754152.003.0033.

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There are few scenarios in the cardiac catheterization laboratory quite as dramatic as a coronary artery perforation. While some instances of this mishap are subtle, others are quite dramatic. Fortunately this occurrence is rare, but carries with it a significant risk of serious adverse events. The potential for harm may be reduced by the brisk identification of the problem within the catheter laboratory, together with early implementation of treatment. A clear understanding of the mechanism, implications, and management of this complication are essential tools for the capable interventional cardiologist.
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Ziólkowski, Mariusz. The Iconography and Use of Inca and Colonial Drinking Vessels. Sous la direction de Sonia Alconini et Alan Covey. Oxford University Press, 2018. http://dx.doi.org/10.1093/oxfordhb/9780190219352.013.50.

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Ceremonial drinking bound Inca elites to each other and to their subjects, and vessels made of precious metal, wood, and pottery communicated status differences in Inca times. These vessels are mentioned in early colonial dictionaries and chronicles because some forms, particularly the wooden quero cup, continued to be important for indigenous elite social actions after the European invasion. Colonial queros often have painted decorations, some of which carry iconographic messages that could be shared by drinking partners. These tocapu designs constitute a symbol system that articulates the changing status of Andean elites as Spanish colonial rule spread through the Andes.
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Chapitres de livres sur le sujet "Somme des carrés"

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Aigner, Martin, et Günter M. Ziegler. « Représentation des nombres comme somme de deux carrés ». Dans Raisonnements divins, 19–25. Paris : Springer Paris, 2013. http://dx.doi.org/10.1007/978-2-8178-0400-2_4.

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Manning, M., J. Przybylski, B. Lammek, Z. Grzonka, A. Olma, K. Bankowski, A. Misicka, M. Kruszynski et W. H. Sawyer. « SURPRISING FINDINGS WITH SOME DELETION-MODIFIED SELECTIVE V2 ANTAGONISTS OF ARGININE VASOPRESSIN ». Dans Porto Carras, Chalkidiki, Greece, Aug. 31–Sept. 5, 1986, sous la direction de Dimitrios Theodoropoulos, 459–64. Berlin, Boston : De Gruyter, 1987. http://dx.doi.org/10.1515/9783110864243-107.

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Molenbroek, Johan F. M. « Some tools for understanding anthropometry ». Dans CARS 2002 Computer Assisted Radiology and Surgery, 593–98. Berlin, Heidelberg : Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/978-3-642-56168-9_99.

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Heng, Swee-Huay, Wun-She Yap et Khoongming Khoo. « Linkability of Some Blind Signature Schemes ». Dans Information Security Theory and Practices. Smart Cards, Mobile and Ubiquitous Computing Systems, 80–89. Berlin, Heidelberg : Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-72354-7_7.

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Nava, Enrique, Raúl Mata, Francisco Sendra et Esther Ristori. « Some results on the preprocessing of mammograms for microcalcification detection ». Dans CARS 2002 Computer Assisted Radiology and Surgery, 1103. Berlin, Heidelberg : Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/978-3-642-56168-9_257.

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Yap, Wun-She, Swee-Huay Heng et Bok-Min Goi. « Cryptanalysis of Some Proxy Signature Schemes Without Certificates ». Dans Information Security Theory and Practices. Smart Cards, Mobile and Ubiquitous Computing Systems, 115–26. Berlin, Heidelberg : Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-72354-7_10.

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Simons, Robert A. « Policy implications and generalizability to large European and Asian cities, plus some final thoughts on DV adoption ». Dans Driverless Cars, Urban Parking and Land Use, 324–39. First edition. | Abingdon, Oxon ; New York : Routledge, 2020. : Routledge, 2020. http://dx.doi.org/10.1201/9780429469541-18.

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Camassa, Manuel. « Empathy and Moral Conduct and Motivation ». Dans On the Power and Limits of Empathy, 237–57. Cham : Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-37522-4_12.

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Abstract‘Empathy and Moral Conduct and Motivation’ takes on a very special perspective in defending empathy: instead of confuting some of the criticisms made to empathy by anti-empathic scholars, it is here pointed out how these apparent shortcomings can in fact become strengths. What Paul Bloom calls the spotlight effect of empathy carries—if properly harnessed—the potentiality of being a great and irreplaceable stimulus for moral action and the so-called ‘identifiable victim effect’ can, if generalised, provide empathy with a stark emotional energy leading to moral motivation.
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« Some New Invariant Metrics ». Dans Carus Mathematical Monographs, 89–136. Providence, Rhode Island : American Mathematical Society, 2004. http://dx.doi.org/10.5948/upo9780883859681.006.

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Perales, Nuria María García, Borja Rivero Jiménez, David Conde Caballero, Beatriz Muñoz González et Lorenzo Mariano Juarez. « Informal Cares and Caregivers in Rural Elderly ». Dans Handbook of Research on Health Systems and Organizations for an Aging Society, 263–76. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-5225-9818-3.ch019.

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The aging population means that health systems rely on informal carers to meet the physical, psychological, and emotional needs of older people. In this context, it is particularly important to know the perceived quality of life of informal carers. Health studies highlight the close relationship between care work and the carer's objective health. Through a qualitative ethnographic methodology, by means of open interviews with carers from rural areas of Extremadura (Spain), this study deepens the knowledge of the emotional costs to which the figure of the informal carer is subjected. The authors approach the social-emotional dimension in places where it is not always possible for public health policies to be fully developed. In this situation, moreover, some moral characteristics of these environments take on special importance.
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Actes de conférences sur le sujet "Somme des carrés"

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Godino, Juan, Carmen Batanero et Rafael Roa. « Training teachers to teach probability ». Dans Statistical Literacy- Material From Some of the Talks. International Association for Statistical Education, 2001. http://dx.doi.org/10.52041/srap.01106.

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In this paper we analyse the reasons why teaching probability is difficult for mathematics teachers, we describe the contents needed in the didactical preparation of teachers to teach probability and we present examples of activities to carry out this training.
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Habibullah, Saleha Naghmi. « “KISC” and “CODAK” : An Indirect Yet Effective Way Of Promoting Statistical Thinking Among The General Community Of Students And Teachers ». Dans Statistical Literacy- Material From Some of the Talks. International Association for Statistical Education, 2001. http://dx.doi.org/10.52041/srap.01104.

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The Kinnaird Inter-collegiate Statistical Competition (KISC) and the Competition Of Data- Analysis At Kinnaird (CODAK) are two initiatives of the Department of Statistics at Kinnaird College for Women, Lahore which invite undergraduate students to carry out small-scale data-based studies and to presient their findings in the form of colourful and attractive posters. KISC and CODAK thus culminate in a beautiful exhibition of statistical posters which contributes to the promotion of statistical thinking among the general community of students and teachers. The significance of such an activity is better understood keeping in view the fact that the educational system of Pakistan is highly textbook-oriented, and there is very little emphasis on the inter-disciplinary approach.
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Elias Yfantis, Elias, Constantina Ioannou et Andreas Paradeisiotis. « Integrated Ship Energy Flowchart : A digital twin to mitigate GHG emissions ». Dans SNAME 8th International Symposium on Ship Operations, Management and Economics. SNAME, 2023. http://dx.doi.org/10.5957/some-2023-009.

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The alarming rate of climate change accentuates the need to reduce greenhouse gas (GHG) emissions produced from anthropogenic activities and consequently the consumption of fossil fuels. The transportation sector is one of the most energy-demanding activities, consisting around 27% of the global primary energy demand and one of the major contributors of GHG emissions to the atmosphere, while shipping transportation accounts for nearly 12% of its CO2 emissions. Decarbonization is vital for emission mitigation using innovative technologies, policies, and incentives at a local and international level. In this context, the presented Integrated Ship Energy Flowchart (ISEF), aims to create a digital twin of a ship and carry out deterministic calculations, such as engine power requirements and by extension fuel consumption and emissions, by modelling the various components of a ship’s energy flow. Most modeling approaches depend on tracking data from automatic identification systems (AIS) and commercial vessel databases, accompanied with prohibitive costs for many, as well as missing vessel characteristics. ISEF, on the other hand, aims to fill in the gap in case of missing or costly to obtain data while maintaining the flexibility to utilize field data if available. This is done by providing representative vessel characteristics, detailed engine modeling and simulating components such as environmental conditions (sea-state, wind). At the same time, ISEF develops a library of vessel data including ship particulars, engine and route information among others. Thus, it is also suitable for the validation of tracking information and machine learning or other deterministic algorithms. Additionally, this library will enable the development of a statistically representative ship describing the international fleet. This will therefore improve projection algorithms utilized in calculations and aid the evaluation of mitigation options regarding decarbonisation in terms of the overall fleet. Such a model also enables the investigation of alternative fuels and fuel mixtures, route optimization, and inclusion of cold ironing amongst others. The current objectives include the validation of the core modelling implementation via comparisons with available raw data to serve as a reference case and build the necessary libraries. Therefore, a case study of a specific ship utilizing real navigational data will be used to demonstrate the capabilities of the algorithm.
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Boneva, Ani, Veronika Ivanova, Plamen Vasilev, Stoyan Ivanov et Tsvetelina Ivanova. « Big Data Processing for Bulgarian Healthcare - Smart Cards and Some Simulating Decisions ». Dans 2023 International Conference on Big Data, Knowledge and Control Systems Engineering (BdKCSE). IEEE, 2023. http://dx.doi.org/10.1109/bdkcse59280.2023.10339733.

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Boorghany, Ahmad, Siavash Bayat Sarmadi, Pamian Yousefi, Pouneh Gorji et Rasool Jalili. « Random data and key generation evaluation of some commercial tokens and smart cards ». Dans 2014 11th International ISC Conference on Information Security and Cryptology (ISCISC). IEEE, 2014. http://dx.doi.org/10.1109/iscisc.2014.6994021.

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H. Torki, Sumyah, Salih S. Yagoub, Haneen M. Hammed, Tabarak S. Jassim, Mastafa H. Al-Musawi et Hanan A. Al-Naymi. « Identification and Diagnosis of Some Types of Pathogenic Bacteria That Cause Dental Caries in Diabetic Patients ». Dans IX. International Scientific Congress of Pure, Applied and Technological Sciences. Rimar Academy, 2023. http://dx.doi.org/10.47832/minarcongress9-33.

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Вечеркина, Ж. В., А. А. Смолина, Л. Н. Полякова, Н. В. Чиркова et Т. В. Чубаров. « Some features of the mechanism of remineralization in the effectiveness of medical- preventive measures of caries in children ». Dans Научный диалог : Вопросы медицины. ЦНК МОАН, 2018. http://dx.doi.org/10.18411/spc-15-04-2018-04.

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Parmacli, Dmitrii, et Tatiana Dudoglo. « Some peculiarities of comparative analysis in agricultural enterprises ». Dans The 8th International Conference "Management Strategies and Policies in the Contemporary Economy". Academy of Economic Studies of Moldova, 2023. http://dx.doi.org/10.53486/icspm2023.16.

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It is emphasized that in agriculture, enterprises carry out production in approximately similar natural and climatic conditions. Therefore, inter-farm comparative analysis can be more widely used here. Along with the traditional method of comparative analysis of the efficiency of agricultural enterprises, it is advisable to additionally identify the level of use of the potential of the indicator under study and set the percentile value that reflects the place of this business entity in the ranked range of the sample. Some features of the comparative analysis are shown on the example of 50 agricultural enterprises of the ATU Gagauzia, cultivating sunflower in 2021 on areas of 50 hectares and more. The methodology for carrying out additional calculations is easy to use and is quite affordable for its use, both for educational purposes and in production conditions.
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Акимова, Е. Н., et Ю. М. Мелихова. « Some Aspects of Fraud in the Field of Personal Finance ». Dans Современное образование : векторы развития. Роль социально-гуманитарного знания в подготовке педагога : материалы V международной конференции (г. Москва, МПГУ, 27 апреля – 25 мая 2020 г.). Crossref, 2020. http://dx.doi.org/10.37492/etno.2020.37.50.017.

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мошенничество в сфере личных финансов в настоящее время приобретает все большие масштабы. С развитием компьютерных технологий появляются новые способы отъема денег у граждан. В статье рассматриваются различные виды мошенничества в сфере личных финансов (оформление кредита по фальшивым документам, «семейное мошенничество», воровство с кредитных карт и др.) и даются рекомендации, как не попасться на уловки финансовых мошенников. Fraud in the field of personal Finance is now becoming more widespread. With the development of computer technologies, new ways of withdrawing money from citizens appear. The article discusses various types of fraud in the field of personal Finance (making a loan using false documents, «family fraud», theft from credit cards, etc.) and provides recommendations on how not to fall for the tricks of financial fraudsters.
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Santos, Catarina, Ana Teresa Videira Gabriel, Cláudia Quaresma et Isabel L. Nunes. « Lower limb exoskeletons some examples of application ». Dans 13th International Conference on Applied Human Factors and Ergonomics (AHFE 2022). AHFE International, 2022. http://dx.doi.org/10.54941/ahfe1002139.

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Lower limb exoskeletons are wearable mechanical or mechatronic equipment developed as augmentative devices that work in concert with the user's movements to provide physical assistance through torques or structural support. The exoskeleton moves with the user and can act actively or passively, adding strength to the wearer. In addition, they allow maintaining human dexterity, agility, and adaptability (Bär et al., 2021). Depending on the field of application, these devices can be separated into two main categories: assistive and augmentation exoskeletons. Thus, assistive exoskeletons are designed to assist/replace the impaired parts of the users, restore physical movements, increase independence, and improve patients quality of life. Alternatively, augmentation exoskeletons can be found in industries to improve ergonomics, reduce the risk of exposure to demanding working conditions, prevent work accidents, reduce users’ acute physical stress and strain and increase the operator's efficiency. As well as in military tasks to allow soldiers to carry heavy equipment while walking. Due to its wide use in various applications and the exponentially growing number of research studies in this area, the primary purpose of this article is to provide state of the art regarding lower limb exoskeletons, giving some examples of their general present-day use.Keywords: lower limb exoskeletons; assistive exoskeletons; augmentation exoskeletonsBär, M., Steinhilber, B., Rieger, M. A., & Luger, T. (2021). The influence of using exoskeletons during occupational tasks on acute physical stress and strain compared to no exoskeleton – A systematic review and meta-analysis. Applied Ergonomics, 94. http://10.0.3.248/j.apergo.2021.103385
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Rapports d'organisations sur le sujet "Somme des carrés"

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Toney, Autumn, et Emelia Probasco. Who Cares About Trust ? Center for Security and Emerging Technology, juillet 2023. http://dx.doi.org/10.51593/20230014b.

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Artificial intelligence-enabled systems are transforming society and driving an intense focus on what policy and technical communities can do to ensure that those systems are trustworthy and used responsibly. This analysis draws on prior work about the use of trustworthy AI terms to identify 18 clusters of research papers that contribute to the development of trustworthy AI. In identifying these clusters, the analysis also reveals that some concepts, like "explainability," are forming distinct research areas, whereas other concepts, like "reliability," appear to be accepted as metrics and broadly applied.
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Ugrósdy, Márton. Keep Calm and Carry On : Hungarian-US Relations under the Biden Administration. Külügyi és Külgazdasági Intézet, 2021. http://dx.doi.org/10.47683/kkielemzesek.e-2021.01.

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It has been alleged that a major deterioration was going to be inevitable in the U.S.-Hungarian relations under the Biden Admnistration. Due to political issues, some analysts are ready to expect a low ebb of amity between Washington and Budapest. The present study goes back to the foundations and revisits the nature of the uprgading of those relations in the past four years, the different layers of American policy-making as well as their objective outcomes. This paper argues that in spite of the real potential of conflict in political commmunication, the United States will remain the most important ally and strategic partner of Hungary outside the European Union with enhanced cooperation in many fields, including defense cooperation within NATO. Then the study goes on to revisit different scenarios of the future relationship between Hungary and the United States.
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Gagnon, Marie-Pierre. Should non-physician clinicians versus doctors be used for caesarean section ? SUPPORT, 2016. http://dx.doi.org/10.30846/161011.

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Many low-income countries face a shortage of trained medical doctors, especially in rural areas. This situation has detrimental effects on healthcare outcomes for the population. Non-physician clinicians are trained to perform some tasks usually carried out by doctors, including obstetric care. In some countries, non-physician clinicians are authorized to carry out caesarean sections. As their training and salary are lower and their retention is better, these clinicians could offer an alternative to doctors for caesarean section in low-income countries.
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Olsen. PR-179-10201-R01 Characterization of Lubricating Oil Carry Over in a 2-Stroke LB NG Engine. Chantilly, Virginia : Pipeline Research Council International, Inc. (PRCI), août 2011. http://dx.doi.org/10.55274/r0010748.

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This project is driven by concerns over excessive cylinder lubrication in large bore two-stroke cycle natural gas engines. Excessive cylinder lubrication can lead to: (1) Increased operating costs due to high lubricating oil consumption, (2) Poisoning of catalytic converters, and (3) Increased pollutant emissions. These concerns can be addressed by reexamining lubrication rates and exploring advanced lubrication techniques. Catalyst poisoning and increased pollutant emissions occur when a portion of the cylinder lubricating oil in some form is passed through the cylinder and into the exhaust system. The lubricating oil may carry over into the exhaust system unchanged, or it may react to form other compounds. In this work the focus is on identifying the scope of the problem associated with cylinder lubricating oil carryover into the exhaust system.
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Crouch. L52201 Baseline Study of Alternate In-Line Inspection Vehicles. Chantilly, Virginia : Pipeline Research Council International, Inc. (PRCI), janvier 2008. http://dx.doi.org/10.55274/r0010954.

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It was a goal of this project to identify and evaluate nonpiston vehicle concepts that could potentially carry inspection sensors and recording apparatus into both piggable and nonpiggable pipelines. It has been suggested that pipeline integrity management in some future time might include the use of autonomous robots that would "live" in a pipeline, taking power from the moving product stream and communicating to the outside of the pipeline, from time to time, information on the condition of the pipeline. The system then would include a vehicle, sensors, data recording, power generation, and communication. Work has been done in various research centers on each of these components. Some mention will be made of the other components, but the thrust of this report is on the vehicle.
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MacArtney, John I., Joanna Fleming, Abi Eccles, Catherine Grimley, Helen Wesson, Catriona Mayland, Sarah Mitchell et al. Impact of Covid-19 pandemic on Hospices (ICoH) : Carer Cohort Report. University of Warwick Press, mai 2022. http://dx.doi.org/10.31273/978-1-911675-03-7.

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This report describes the diversity of experiences informal carers for people with life-limiting illnesses who were supported by hospices in the West Midlands during the pandemic. It is one of four cohort reports – the others focus on patients, frontline hospice staff, and senior managers respectively – that form the evidence base for a Policy Report into the impact of Covid-19 on hospices. In these reports we address the nine key themes that were identified as potentially important in our previous collaborative knowledge synthesis (MacArtney et al., 2021) and seek to address some of the policy gaps we identified in our review of recommendations for hospice practice and policy (Langen-Datta et al., 2022). Together these outputs are the result of an Economic and Social Research Council funded study (grant number: ES/W001837/1). This is one of the first studies to contribute an in-depth exploration of hospice-based experiences of the pandemic to the growing body of knowledge about the effectiveness and effects of changes to hospice services, at regional and national levels in response to Covid-19. The aim of this report is therefore to explore experiences of those informal carers of people with life-limiting conditions and the effects of the Covid-19 pandemic on the care and support they experienced, to identify recommendations for clinical practice and healthcare policy. Drawing on these findings, this report offers recommendations for hospices and clinicians who continue to provide care and support for people with life limiting conditions and those that care them during the ongoing pandemic. These recommendations will also be of interest to local commissioners who will need to work with hospices in their region to ensure informal carers receive the support they need, and national policymakers who will need to ensure the necessary resources and guidance are available.
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De Rosa, Gustavo Alberto, Søren Elbech, Ian MacDonald et Alessandro Macri. Callable Capital of the Inter-American Development Bank : A Report based on the MDB-wide Review of Callable Capital. Inter-American Development Bank, avril 2024. http://dx.doi.org/10.18235/0005553.

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This report presents the Inter-American Development Banks (IDB) results of the Review of Callable Capital exercise, initiated by a group of Multilateral Development Bank (MDB) shareholders, to support efforts related to the G20 Independent Review of Multilateral Development Banks (MDB) Capital Adequacy Frameworks (“G20 CAF Report”). The report confirms that Callable Capital at IDB is legally valid and binding and could be activated by Executive Directors. Some shareholders have mechanisms in place to carry out a call on callable capital on short notice, and others have accelerated processes that could be activated. A call on callable capital remains a highly remote scenario, as confirmed by the reverse stress testing exercise, in line with the Banks solid financial policy framework.
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MacArtney, John I., Joanna Fleming, Abi Eccles, Catherine Grimley, Helen Wesson, Catriona Mayland, Sarah Mitchell et al. Impact of Covid-19 pandemic on Hospices (ICoH) : Staff Cohort Report. University of Warwick Press, mai 2022. http://dx.doi.org/10.31273/978-1-911675-04-4.

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This report describes the diversity of experiences of hospice staff who worked in operational roles in hospices in the West Midlands during the Covid-19 pandemic. It is one of four cohort reports – the others focus on patients, carers, and senior managers respectively – that form the evidence base for a Policy Report into the impact of Covid-19 on hospices. In these reports we address the nine key themes that were identified as potentially important in our previous collaborative knowledge synthesis (MacArtney et al., 2021) and seek to address some of the policy gaps we identified in our review of recommendations for hospice practice and policy (van Langen-Datta et al., 2022). Together these outputs are the result of an Economic and Social Research Council funded study (grant number: ES/W001837/1). This is one of the first studies to contribute an in-depth exploration of hospice-based experiences of the pandemic to the growing body of knowledge about the effectiveness and effects of changes to hospice services, at regional and national levels in response to Covid-19. The aim of this report is therefore to explore the effects the Covid-19 pandemic had on the experiences of hospice staff as they sought to provide care and support to people with life-limiting conditions and those that cared for them so that we can identify recommendations for clinical practice and healthcare policy. Drawing on these findings, this report offers recommendations for hospices and clinicians who continue to provide care and support for people with life limiting conditions and those that care them during the ongoing pandemic. These recommendations will also be of interest to local commissioners who will need to work with hospices in their region to ensure informal carers receive the support they need, and national policymakers who will need to ensure the necessary resources and guidance are available.
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Shaw, Jackie, et Mary Wickenden. Insights from Inclusive Participatory Fieldwork with Learners with Deafblindness and Other Marginalised Impairments. Institute of Development Studies, novembre 2023. http://dx.doi.org/10.19088/ids.2023.014.

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This paper describes and discusses a piece of inclusive and participatory fieldwork carried out at two sites in Bangladesh in close collaboration with local and international NGOs working on disability as part of the UK government (FCDO) funded Disability Inclusive Development (DID) programme. Our research fieldwork engaged two small groups of learners with specific identities (deafblind or young women) in workshops aiming to gather examples of and understand their experiences as young people with disabilities, both in general terms and about a work-focussed programme. Creative, visual and arts based multi-modal methods were used to encourage maximum participation, including from those with little or no spoken language or literacy. Some were accompanied by carers or supporters who also shared their perspectives. Local staff teams from collaborating INGOs and Organisations of People with Disabilities (OPDs) supported, participated in and learnt from the process. Detail about the workshop activities and data from the participants are presented and discussed. Recommendations from the participants and reflections on the methodological aspects are provided. We concluded that using inclusive, participatory and creative research methods generates rich insights into people’s experiences, which can increase understandings about marginalised people’s lives and inform future interventions to promote their inclusion.
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Masciandaro, Donato. Is the Anti Money Laundering Compliance Convenient ? : International Capital Flows and Stigma Effect in Latin America : The Case of Paraguay. Inter-American Development Bank, septembre 2013. http://dx.doi.org/10.18235/0006973.

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This study analyzes the international financial flows of Latin America in order to verify existence and direction of the Stigma Effect. Is the AML/CFT financial regulation that addresses the money laundering and terrorism finance phenomena relevant in shaping the pattern of international banking movements? We test if the FAFT listing-delisting events are effective sticks and carrots for the targeted countries in influencing cross-border banking flows. The tests are based on a theoretical framework, where the stigma effect holds if doing business with a listed country produces nonlinear monetary and/or reputational costs. We focus on the 34 Latin American countries in the period 1996-2007 using annual panel data. We find evidence that the list in-list out mechanism can influence the banking inflows, provided that some conditions hold. The relevance of the stigma effect seems to depend on the one side on the efficiency of the international capital markets and on the other side on specific features of the listed/delisted country: regulatory lightness, banking profitability, growth per capita. The empirical specification is applied in evaluating the case of Paraguay using a time series analysis with quarterly data. The study finds that the Paraguayan listing episode was likely to produce perceptible effects on both capital inflows and outflows.
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