Thematische Bibliographien / LAURENT TRANSFORM

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Auswahl der wissenschaftlichen Literatur zum Thema „LAURENT TRANSFORM“

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Veröffentlicht am 11. September 2023

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Zeitschriftenartikel zum Thema "LAURENT TRANSFORM"

SUN, YAN-KUI. „SYMMETRIC LIFTING FACTORIZATION AND MATRIX REPRESENTATION OF BIORTHOGONAL WAVELET TRANSFORMS“. International Journal of Wavelets, Multiresolution and Information Processing 01, Nr. 04 (Dezember 2003): 465–79. http://dx.doi.org/10.1142/s0219691303000244.

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This paper introduces some properties of symmetric Laurent polynomials, and then extends Euclidean algorithm to symmetric Laurent polynomials. The new results are used to investigate factorization of polyphase matrix for biorthogonal finite filters. It is shown that there exists one and only one symmetric factorization of the polyphase matrix, and the symmetric factorization can be determined directly and efficiently by Euclidean algorithm for symmetric Laurent polynomials. Finally, symmetric implementation and matrix representation of biorthogonal wavelet transforms are introduced, and the study demonstrates that the symmetric implementation has the least multiplication number in all lifting implementations, and it is equivalent to a matrix transform on finite dimensional vector space.

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Fischer, Jens. „Four Particular Cases of the Fourier Transform“. Mathematics 6, Nr. 12 (18.12.2018): 335. http://dx.doi.org/10.3390/math6120335.

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In previous studies we used Laurent Schwartz’ theory of distributions to rigorously introduce discretizations and periodizations on tempered distributions. These results are now used in this study to derive a validity statement for four interlinking formulas. They are variants of Poisson’s Summation Formula and connect four commonly defined Fourier transforms to one another, the integral Fourier transform, the Discrete-Time Fourier Transform (DTFT), the Discrete Fourier Transform (DFT) and the integral Fourier transform for periodic functions—used to analyze Fourier series. We prove that under certain conditions, these four Fourier transforms become particular cases of the Fourier transform in the tempered distributions sense. We first derive four interlinking formulas from four definitions of the Fourier transform pure symbolically. Then, using our previous results, we specify three conditions for the validity of these formulas in the tempered distributions sense.

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Sinclair, Christopher D. „The distribution of Mahler's measures of reciprocal polynomials“. International Journal of Mathematics and Mathematical Sciences 2004, Nr. 52 (2004): 2773–86. http://dx.doi.org/10.1155/s0161171204312469.

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We study the distribution of Mahler's measures of reciprocal polynomials with complex coefficients and bounded even degree. We discover that the distribution function associated to Mahler's measure restricted to monic reciprocal polynomials is a reciprocal (or antireciprocal) Laurent polynomial on[1,∞)and identically zero on[0,1). Moreover, the coefficients of this Laurent polynomial are rational numbers times a power ofπ. We are led to this discovery by the computation of the Mellin transform of the distribution function. This Mellin transform is an even (or odd) rational function with poles at small integers and residues that are rational numbers times a power ofπ. We also use this Mellin transform to show that the volume of the set of reciprocal polynomials with complex coefficients, bounded degree, and Mahler's measure less than or equal to one is a rational number times a power ofπ.

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Settu, S. A. „SP Transform and Uniform Convergence of Laurent and Power Series“. Canadian Mathematical Bulletin 30, Nr. 1 (01.03.1987): 114–23. http://dx.doi.org/10.4153/cmb-1987-017-1.

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AbstractIf the Laurent seriesis transformed toit is shown that convergence of the former at z = 1 implies the uniform convergence of the latter on a symmetric arc of |z - 1/P| = 1/P - 1 not containing z = 1 and that the uniform convergence of the former over a symmetric arc of |z| = 1 containing z = 1 implies uniform convergence of the latter on the entire circle |z — 1/P| = 1/P — 1.

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Berriochoa, Elías, Alicia Cachafeiro und Jaime Díaz. „Hermite Interpolation on the Unit Circle Considering up to the Second Derivative“. ISRN Mathematical Analysis 2014 (10.03.2014): 1–10. http://dx.doi.org/10.1155/2014/808519.

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The paper is devoted to study the Hermite interpolation problem on the unit circle. The interpolation conditions prefix the values of the polynomial and its first two derivatives at the nodal points and the nodal system is constituted by complex numbers equally spaced on the unit circle. We solve the problem in the space of Laurent polynomials by giving two different expressions for the interpolation polynomial. The first one is given in terms of the natural basis of Laurent polynomials and the remarkable fact is that the coefficients can be computed in an easy and efficient way by means of the Fast Fourier Transform (FFT). The second expression is a barycentric formula, which is very suitable for computational purposes.

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Watts, Benjamin. „Calculation of the Kramers-Kronig transform of X-ray spectra by a piecewise Laurent polynomial method“. Optics Express 22, Nr. 19 (19.09.2014): 23628. http://dx.doi.org/10.1364/oe.22.023628.

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Coussement, J., A. B. J. Kuijlaars und W. Van Assche. „Direct and inverse spectral transform for the relativistic Toda lattice and the connection with Laurent orthogonal polynomials“. Inverse Problems 18, Nr. 3 (21.05.2002): 923–42. http://dx.doi.org/10.1088/0266-5611/18/3/325.

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Alam, Parvez, Santimoy Kundu und Shishir Gupta. „Love-type wave propagation in a hydrostatic stressed magneto-elastic transversely isotropic strip over an inhomogeneous substrate caused by a disturbance point source“. Journal of Intelligent Material Systems and Structures 29, Nr. 11 (25.04.2018): 2508–21. http://dx.doi.org/10.1177/1045389x18770877.

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Propagation of Love-type waves emanating due to a disturbance point source in a transversely isotropic layer of finite thickness laid over a semi-infinite half-space is investigated. The layer is assumed under the influence of magnetic field and hydrostatic state of stress, while the half-space is inhomogeneous. The source point is situated at the common interface of the layer and half-space. Maxwell’s equation and generalized Ohm’s law have been taken into account to calculate the Laurent force induced in the layer. Green’s function technique and Fourier transform are used as a powerful tool to calculate the interior deformations of the model; consequently, we obtain a closed-form dispersion relation for the wave. Six numerical examples for the transversely isotropic layer, namely, beryl, magnesium, cadmium, zinc, cobalt, and simply isotropic, have been considered. The role of magneto-elastic coupling parameter, hydrostatic stress, inhomogeneity, the order of the depth variation in inhomogeneity function, and different examples of the layer on the propagation of Love-type wave has been observed by numerical examples and graphical demonstrations.

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Zemanian, A. H., und B. Anderson. „Modeling of borehole resistivity measurements using infinite electrical grids“. GEOPHYSICS 52, Nr. 11 (November 1987): 1525–34. http://dx.doi.org/10.1190/1.1442269.

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An infinite electrical resistive grid generated by a finite‐difference approximation to Poisson’s equation in cylindrical coordinates with no azimuthal variation has been used to model borehole resistivity measurements. The medium surrounding the borehole is infinite in extent and its resistivity varies only in the radial direction. As a result, the branch resistance values of the infinite grid also vary only in the radial direction. A continued fraction of Laurent operators determines the node voltages along the borehole’s surface. Use of an operational calculus based upon the finite Fourier transformation converts the continued fraction into a readily computed form. This yields new formulas for apparent resistivity, given various resistivity measuring arrays and a resistivity profile in the radial direction. In contrast to classical methods, the need to match boundary conditions at the interface of a cylindrically layered earth is eliminated, so that the procedure is just as easily applied to a continuous resistivity profile as it is to a stepped profile. Moreover, the method is computationally fast by virtue of the fast Fourier transform algorithm and the avoidance of boundary‐condition matching. The speed and versatility of this model make it useful for studying the effects of complex invasion on the response of resistivity tools.

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Muro, Masakazu. „Singular invariant hyperfunctions on the square matrix space and the alternating matrix space“. Nagoya Mathematical Journal 169 (2003): 19–75. http://dx.doi.org/10.1017/s0027763000008448.

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AbstractFundamental calculations on singular invariant hyperfunctions on the n ×n square matrix space and on the 2n × 2n alternating matrix space are considered in this paper. By expanding the complex powers of the determinant function or the Pfaffian function into the Laurent series with respect to the complex parameter, we can construct singular invariant hyperfunctions as their Laurent expansion coefficients. The author presents here the exact orders of the poles of the complex powers and determines the exact supports of the Laurent expansion coefficients. By applying these results, we prove that every quasi-relatively invariant hyperfunction can be expressed as a linear combination of the Laurent expansion coefficients of the complex powers and that every singular quasi-relatively invariant hyperfunction is in fact relatively invariant on the generic points of its support. In the last section, we give the formula of the Fourier transforms of singular invariant tempered distributions.

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Dissertationen zum Thema "LAURENT TRANSFORM"

Laval, Gilles. „Stratégies et tactiques en synthèse stereoselectivede produits naturels : (-+) et (+)-cis-g-irone ; (+) et (-)-laurene“. Aix-Marseille 3, 1999. http://www.theses.fr/1999AIX30072.

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Ce travail developpe differentes strategies et tactiques pour la synthese stereoselective de produits naturels : la cis--irone et le laurene. Il est presente en deux parties. Dans la premiere, consacree aux syntheses diastereoselective et enantiospecifique de la cis--irone, deux strategies ont ete mises en oeuvre pour atteindre nos objectifs. Tout d'abord, une cyclisation intramoleculaire mettant en jeu une h-ene reaction thermique nous a permis d'ameliorer nettement le rendement de la synthese d'un intermediaire cle bicyclique de la ()-cis--irone. Apres plusieurs tactiques utilisant cette meme strategie, mais induites par les acides de lewis, un intermediaire bicyclique different a pu etre synthetise. Les tentatives infructueuses d'exploitation de ce compose ont ete expliquees par sa structure tridimensionnelle etablie par analyse aux rayons x. La deuxieme strategie, basee sur la protonation diastereoselective d'un enolate chiral, nous a permis de realiser avec une grande efficacite la premiere synthese totale enantiospecifique de la (+)-(2r,6s)-cis--irone. Dans la deuxieme partie, nous proposons une synthese enantiospecifique des (+) et ()-laurene imbriquant, de maniere complementaire, la methodologie de la h-ene reaction et l'utilisation des biocatalyseurs. Dans un premier temps, nous nous sommes familiarises avec les techniques des biotransformations en etudiant un screening d'enzymes hydrolytiques dans le cadre de la resolution cinetique de deux modeles a structure proche de celle du laurene. Le modele substitue par un gem-dimethyle a ete parfaitement resolu par la lipase pseudomonas sp. La specificite de cette enzyme pour notre substrat a pu etre etablie grace a la determination par cristallographie de la configuration absolue de l'alcool restant apres deracemisation. La mise en application de l'experience acquise, nous a permis d'obtenir par une sequence h-ene reaction diastereoselective / resolution enzymatique le (+)-laurene naturel et son enantiomere avec d'excellents exces enantiomeriques.

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Sasseville, Christian. „Géochronologie K-Ar et transfert de matière le long de systèmes de failles et de fractures dans la lithosphère continentale : Cas du système de rift Saint-Laurent en relation avec le domaine allochtone des Appalaches (Québec, Canada)“. Strasbourg 1, 2008. http://www.theses.fr/2008STR1GE10.

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Chu, Xu [Verfasser], und Eckart [Akademischer Betreuer] Laurien. „Direct numerical simulation of heat transfer to supercritical carbon dioxide in pipe flows / Xu Chu ; Betreuer: Eckart Laurien“. Stuttgart : Universitätsbibliothek der Universität Stuttgart, 2016. http://d-nb.info/1129174700/34.

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MISHRA, SWAPNIL. „CONSOLIDATION OF THIN CLAY LAMINA USING LAURENT TRANSFORM“. Thesis, 2016. http://dspace.dtu.ac.in:8080/jspui/handle/repository/14465.

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This work evaluates the rate of consolidation by Laurent series using transformations. A clear comparison is made between Fourier and Laurent outputs for variation of degree of consolidation with time factor experimentally and verified theoretically. Laurent series has been observed to be consistent for explaining consolidation of clay layer with low thickness. As the Laurent series is a type of convergent series therefore all the variation in sample thickness & pore water pressure converges to a single value. Curve obtained by Laurent series continuous in nature. With the help of Laurent series process of consolidation can be studied even at microscopic level and for all kind of soils. This analysis can be well supported & explained by conversion of nature of plots from Fourier transformation to Laurent transformation.

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MEHRA, BIJENDRA SINGH. „CONSOLIDATION BEHAVIOUR OF MIX CLAY USING LAURENT TRANSFORM“. Thesis, 2016. http://dspace.dtu.ac.in:8080/jspui/handle/repository/14582.

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Consolidation behaviour of fine grained soil is evaluated commonly by Terzaghi’s one dimensional linear elastic consolidation theory. It is based on several simplified assumptions. Out of these assumptions most important assumption is constant value of coefficient of consolidation Cv during the consolidation process. But it leads serious problems to the consolidation of soft clay like bentonite and bentonite –sand mixture. Since Terzaghi’s one dimensional consolidation theory gives good results for small strain problems. Hence in this study Terzaghi’s one dimensional consolidation theory is used for evaluating consolidation of pure bentonite and bentonite –sand mixture assuming constant value of coefficient of consolidation Cv for small range of effective stress. Variation of coefficient of consolidation with effective stress for different percentage of bentonite in sand is shown. Moreover variation of other consolidation properties like coefficient of compressibility av, coefficient of volume compressibility mv, compression index Cc with effective stress is determined and comparison of these properties for different clay content are made. Based on consolidation property permeability of clay is calculated indirectly for different percentage of clay. It is observed that permeability of clay increases with decrease in clay content.Based on consolidation properties graphs between average degree of consolidation and time factor is plotted and comparison is made for different percentage of clay. Rate of consolidation is compared here using the two transforms Fourier as well as Laurent and it is clear from the experiments that rate of consolidation is faster using Laurent transform.

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Sasseville, Christian. „Géochronologie K-Ar et transfert de matière le long de systèmes de failles et de fractures dans la lithosphère continentale : cas du système de rift Saint-Laurent en relation avec le domaine allochtone des Appalaches (Québec, Canada)“. Thèse, 2009. http://www.archipel.uqam.ca/1937/1/D1778.pdf.

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Des contraintes temporelles sont nécessaires à la compréhension de l'évolution cinématique des ceintures de plis et de chevauchements, de même qu'à celle des systèmes de rift. Cette thèse de doctorat porte sur la géologie du domaine allochtone des Appalaches et du système de rift du Saint-Laurent. L'absence de contraintes géochronologiques portant sur les failles supracrustales de cette zone d'étude limite l'interprétation de l'évolution cinématique de la marge laurentienne. De nouvelles contraintes temporelles géologiquement significatives sont rapportées ici. Ces contraintes ont été obtenues en utilisant une approche méthodologique multidisciplinaire combinant l'analyse structurale, la cartographie régionale et détaillée. L'approche analytique inclut la minéralogie, la morphologie et l'analyse isotopique (K-Ar) de fractions riches en argiles (<0.2 µm et 1-2 µm) de roches de failles et de leurs lithologies hôtes. Le premier chapitre documente l'évolution structurale du domaine allochtone des Appalaches (zone externe de Humber) où sont rapportées des structures de chevauchement taconiennes. Ces structures sont datées pour la première fois à environ 490, 465 et 450 Ma, par la méthode K-Ar. On rapporte une première évidence claire de structures d'extension synchrones (410 Ma) au développement de rétro-chevauchements, qui sont associés à un rétro-métamorphisme au sein des nappes de la zone externe. Ce sont là les premières évidences de déformations post-taconniennes documentées au sein de la zone externe de Humber. Ces déformations sont contemporaines aux failles syn-sédimentaires de la ceinture de Gaspé et à l'âge de la faille Saint-Joseph le long de la ligne Baie Verte-Brompton. Cela témoigne d'une phase d'extension intra-cratonique jamais documentée auparavant dans cette portion des Appalaches. La présence de déformations acadiennes est mise en évidence pour la première fois au sein de la zone externe de Humber, permettant: 1) de redéfinir l'étendue de cette déformation appalachienne et 2) de mettre en évidence la progression de l'orogénèse acadienne au Dévonien tardif vers l'avant-pays. L'évolution tardive (360 Ma) de ces déformations (relaxation des contraintes acadiennes) est associée à une période d'extension et d'hydrothermalisme contemporain de cette déformation. Le deuxième chapitre démontre la réactivation répétée du système de rift du Saint-Laurent à 436 ± 45 Ma et 406 ± 22 Ma. Ces réactivations sont contemporaines des périodes de subsidence régionales liées, dans le premier cas, au développement de bassins détritiques dans l'avant-pays taconnien et dans le second cas, à une période d'extension intra-cratonique dans les Appalaches adjacentes. La localisation des failles associées au rift du Saint-Laurent présente un contrôle structural induit par la réactivation de structures de plis et de systèmes de joints préexistants dans le socle. Le troisième chapitre documente un nouvel événement tectono-thermal tardidévonien, décrit pour la première fois dans la zone externe de Humber ainsi que dans la province de Grenville. Ce chapitre documente un magmatisme alcalin synchrone de l'hydrothermalisme dévonien au sein de la zone externe de Humber. Les données K-Ar dans les failles normales associées à de l'hydrothermalisme de la zone externe de Humber, le magmatisme alcalin et des roches de faille dans la faille Saint-Laurent définissent ensemble une isochrone à 360 ± 4 Ma. Cet événement semble donc contemporain à la réactivation de la faille Saint-Laurent dans le socle protérozoïque ainsi qu'aux déformations et à l'hydrothermalisme tardi-dévonien de la zone externe de Humber. Ces données nous permettent donc de suivre l'extension du système de rift Saint-Laurent au sein de la zone externe de Humber des Appalaches. Une relecture des cartographies géologiques disponibles permet de proposer une distribution possible des failles liées à cet événement tectono-thermal au sein de la zone externe de Humber. Finalement, les données Pb-Pb disponibles permettent d'envisager que cet événement tectono-thermal (socle-couverture) partage un réservoir isotopique commun avec les intrusions dévoniennes dans les Appalaches. ______________________________________________________________________________ MOTS-CLÉS DE L’AUTEUR : Orogénèse acadienne, Orogénèse laconienne, Zone externe de Humber, Système de rift Saint-Laurent, Grenville, Dévonien tardif, Métallotecte, Magmatisme dévonien, Géochronologie K-Ar, ilIite, Failles supracrustale.

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Bücher zum Thema "LAURENT TRANSFORM"

Roessler, Philip, und Harry Verhoeven. Comrades Preparing for War. Oxford University Press, 2017. http://dx.doi.org/10.1093/acprof:oso/9780190611354.003.0005.

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The chapter analyzes the founding of the coalition of revolutionaries to invade Zaire, symbol of “neo-colonial” Africa. It traces the provisions for war by the Pan-Africanist alliance as they helped create a national liberation movement that could transform abstract ideals into quotidian struggle and political organization. Tasked to front this regime change agenda was Laurent-Désiré Kabila who would develop an extraordinary degree of interdependence with the RPF; their reciprocal relationship would shape the character of the liberation project—and its extraordinarily violent demise—more than any other.

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Keinänen, Nely, und Per Sivefors. Reconstructing Shakespeare in the Nordic Countries. Bloomsbury Publishing Plc, 2023. http://dx.doi.org/10.5040/9781350251281.

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Examining the changing reception of Shakespeare in the Nordic countries between 1870 and 1940, this follow-up volume to Disseminating Shakespeare in the Nordic Countries focuses on the broad movements of national revivalism that took place around the turn of the century as Finland and Norway, and later Iceland, were gaining their independence. The first part of the book demonstrates how translations and productions of Shakespeare were key in such movements, as Shakespeare was appropriated for national and political purposes. The second part explores how the role of Shakespeare in the Nordic countries was partly transformed in the 1920s and 1930s as a new social system emerged, and then as the rise of fascism meant that European politics cast a long shadow on the Nordic countries and substantially affected the reception of Shakespeare. Contributors trace the impact of early translations of Shakespeare's works into Icelandic, the role of women in the early transmission of Shakespeare in Finland and the first Shakespeare production at the Finnish Theatre, and the productions of Shakespeare's plays at the Norwegian National Theatre between 1899 and the outbreak of the Great War. In Part Two, they examine the political overtones of the 1916 Shakespeare celebrations in Hamlet’s ‘hometown’ of Elsinore, Henrik Rytter’s translations of 23 Shakespeare plays into Norwegian to assess their role in his poetics and in Scandinavian literature, the importance of the 1937 production of Hamlet in Kronborg Castle starring Laurence Olivier, and the role of Shakespeare in general and Hamlet in particular in Swedish Nobel laureate Eyvind Johnson's early work where it became a symbol of post-war passivity and rootlessness.

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Seidman, Laurence. Would Stimulus without Debt Work in a Plausible Model? Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780190462178.003.0013.

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Laurence Seidman and Kenneth Lewis (2015) studied the impact of stimulus without debt in a plausible macroeconomic model. In this model, stimulus without debt definitely works in a severe recession. The large fiscal stimulus promptly eliminates a large output gap. Because the large fiscal stimulus is financed by a large transfer (not loan) from the Federal Reserve to the Treasury so that the Treasury doesn’t have to borrow to finance it, the large fiscal stimulus doesn’t increase the deficit or debt beyond the increase caused by the recession shock itself. By contrast, without the Fed transfer to the Treasury, the same large fiscal stimulus would cause the deficit and debt to rise significantly more than with the recession shock alone. Moreover, stimulus without debt is not inflationary: the inflation rate never rises above its low target value.

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Drury, Joseph. Novel Machines. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198792383.001.0001.

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Novel Machines argues that many of the most important formal innovations in eighteenth-century fiction were critical responses to the new prominence of machines in Britain’s Industrial Enlightenment. Although narratives and machines had been seen as sharing a basic affinity since Aristotle, their relationship acquired a new urgency in the eighteenth century as authors sought to organize their narratives according to the new ideas about nature, art, and the human subject that emerged out of the Scientific Revolution. Novel Machines tracks the consequences of this effort to transform the novel into an Enlightenment machine. On the one hand, the rationalization of the novel’s narrative machinery helped establish its legitimacy, such that by the end of the century it could be celebrated as a modern ‘invention’ that provided valuable philosophical knowledge about human nature. On the other hand, conceptualizing the novel as a machine opened up a new line of attack for the period’s moralists, whose polemics against the novel were often framed in the same terms used to reflect on the uses and effects of machines in other contexts. Eighteenth-century novelists responded by adapting the novel’s narrative machinery, devising in the process some of the period’s most characteristic and influential formal innovations. Novel Machines focuses on four of these innovations: the extended representation of the deliberating mind in Eliza Haywood’s amatory fiction; Henry Fielding’s performative, self-conscious narrator; Laurence Sterne’s slow, digressive, non-linear narration; and the atmospheric descriptions of acousmatic sound in Ann Radcliffe’s gothic romances.

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Xie, Chuntao, Hrsg. China's Urbanization: Migration by the Millions. Übersetzt von Chiying Wang. Global Century Press, 2016. http://dx.doi.org/10.24103/cus1.en.2016.

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Joseph Eugene Stiglitz, laureate of the Nobel Prize in Economic Sciences, once named urbanization in China and the new technical revolution led by the United States as the two great events shaping the world of the 21st century. British specialist Tom Miller refers to China’s urbanization as “the greatest migration in human history.” China's Urbanization: Migration by the Millions is a full-range description of how millions of farmers in China became urban citizens in different periods of history. It further explores the deep-rooted issues of the country’s land system and household registration system, issues that will be confronted by urbanization for a long time to come. China is the world’s largest single-country population transfer and urbanization country. Its urbanization is faced with ever more stringent constraints on resources and environment. This means China has to take a brand new path of urbanization with Chinese characteristics. Through this book, readers can get both the ropes of official and mainstream views on the new urbanization initiative and get familiar with multi-directional probes on this issue in academic circles so they may gain a comprehensive and balanced understanding of the whole picture. This book was first published by New World Press in 2014, and republished jointly by New World Press and Global Century Press in 2016. This joint publication is the first volume in the ‘China Urbanization Studies’ series. We have retained the original typesetting, but we have added DOI numbers for the book, Series Editors’ Prefaces and all chapters, as well as a section of dual language additions from Global Century Press in English and Chinese.

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Buchteile zum Thema "LAURENT TRANSFORM"

Bultheel, Adhemar. „Moebius transforms“. In Laurent Series and their Padé Approximations, 55–63. Basel: Birkhäuser Basel, 1987. http://dx.doi.org/10.1007/978-3-0348-9306-0_6.

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Bultheel, Adhemar. „Moebius transforms, continued fractions and Padé approximants“. In Laurent Series and their Padé Approximations, 11–28. Basel: Birkhäuser Basel, 1987. http://dx.doi.org/10.1007/978-3-0348-9306-0_2.

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van Staal, Cees R., und Alex Zagorevski. „Paleozoic tectonic evolution of the rifted margins of Laurentia“. In Laurentia: Turning Points in the Evolution of a Continent. Geological Society of America, 2022. http://dx.doi.org/10.1130/2022.1220(24).

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ABSTRACT The Neoproterozoic to Cambrian rifting history of Laurentia resulted in hyperextension along large segments of its Paleozoic margins, which created a complex paleogeography that included isolated continental fragments and exhumed continental lithospheric mantle. This peri-Laurentian paleogeography had a profound effect on the duration and nature of the Paleozoic collisional history and associated magmatism of Laurentia. During the initial collisions, peri-Laurentia was situated in a lower-plate setting, and there was commonly a significant time lag between the entrance of the leading edge of peri-Laurentia crust in the trench and the arrival of the trailing, coherent Laurentian landmass. The final Cambrian assembly of Gondwana was followed by a global plate reorganization that resulted in Cambrian (515–505 Ma) subduction initiation outboard of Laurentia, West Gondwana, and Baltica. Accretion of infant and mature intraoceanic arc terranes along the Appalachian-Caledonian margin of the Iapetus Ocean started at the end of the Cambrian during the Taconic-Grampian orogenic cycle and continued until the ca. 430–426 Ma onset of the Scandian-Salinic collision between Laurentia and Baltica, Ganderia, and East Avalonia, which created the Laurussian continent and closed nearly all vestiges of the Iapetus Ocean. Closure of the Iapetus Ocean in the Appalachians was followed by the Devonian Acadian and Neoacadian orogenic cycles, which were due to dextral oblique accretion of West Avalonia, Meguma, and the Suwannee terranes following the Pridolian to Lochkovian closure of the Acadian seaway and subsequent outboard subduction of the Rheic Ocean beneath Laurentia. Continued underthrusting of Baltica and Avalonia beneath Laurentia during the Devonian indicates that convergence continued between Laurentia and Baltica and Avalonia, which, at least in part, may have been related to the motions of Laurentia relative to its converging elements. Cambrian to Ordovician subduction zones formed earlier in the oceanic realm between Laurentia and Baltica and started to enter the Arctic realm of Laurentia by the Late Ordovician, which resulted in sinistral oblique interaction of the Franklinian margin with encroaching terranes of peri-Laurentian, intra-oceanic, and Baltican provenance. Any intervening seaways were closed during the Middle to Late Devonian Ellesmerian orogeny. Exotic terranes such as Pearya and Arctic Alaska became stranded in the Arctic realm of Laurentia, while other terranes such as Alexander and Eastern Klamath were translated further into the Panthalassa Ocean. The Middle/ Late Devonian to Mississippian Antler orogeny along the Cordilleran margin of Laurentia records the first interaction with an outboard arc terrane built upon a composite block preserved in the Northern Sierra and Eastern Klamath terranes. The Carboniferous–Permian Alleghanian-Ouachita orogenic cycle was due to closure of the vestiges of the Rheic Ocean and assembly of Pangea. The narrow, continental transform margin of the Ouachita embayment of southern Laurentia had escaped accretion by outboard terranes until the Mississippian, when it collided with an outboard arc terrane.

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McClelland, William C., Justin V. Strauss, Jane A. Gilotti und Maurice Colpron. „Paleozoic evolution of the northern Laurentian margin: Evaluating links between the Caledonian, Ellesmerian, and Cordilleran orogens“. In Laurentia: Turning Points in the Evolution of a Continent. Geological Society of America, 2022. http://dx.doi.org/10.1130/2022.1220(30).

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ABSTRACT The passive margins of Laurentia that formed during Neoproterozoic–Cambrian breakup of the supercontinent Rodinia record subsequent histories of contraction and translation. This contribution focuses on the northern margin of Laurentia, where recent geologic and geochronologic data have provided new insight into the evolution of northern North America. The Laurentian margin in East and North-East Greenland records synorogenic sedimentation and deformation associated with the Caledonian orogeny—the Silurian to Devonian continent-continent collision between Baltica and Laurentia that followed closure of the northern tract of the Iapetus Ocean. The timing of ultrahigh-pressure metamorphism and simultaneous sinistral and dextral strike-slip faulting in North-East Greenland indicates that the Himalayan-style orogen persisted through the Devonian. In contrast, the Franklinian margin further west records sinistral strike-slip translation of allochthonous crustal blocks and arc fragments starting in the Ordovician–Silurian and culminating with the Devonian– Carboniferous Ellesmerian orogeny, the origin of which remains enigmatic. We suggest that Ellesmerian deformation was related to widespread transpression associated with northward motion of Laurentia during Acadian and Neo-Acadian deformation along the Appalachian margin rather than orthogonal ocean basin closure and microcontinent-continent collision. The Pearya terrane and North Slope subterrane of the Arctic Alaska terrane, separated from the Franklinian passive margin by the Petersen Bay fault and Porcupine shear zone, respectively, best preserve the Paleozoic translational and transpressional history of the northern Laurentian margin. These two major structures record a complex history of terrane accretion and translation that defines the Canadian Arctic transform system, which truncated the Caledonian suture to the east and ultimately propagated early Paleozoic subduction to the Cordilleran margin of western Laurentia.

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Tikoff, B., P. Kelso, A. K. Fayon, R. Gaschnig, R. M. Russo, J. Vervoort, B. Jicha und M. J. Kahn. „The jagged western edge of Laurentia: The role of inherited rifted lithospheric structure in subsequent tectonism in the Pacific Northwest“. In Laurentia: Turning Points in the Evolution of a Continent. Geological Society of America, 2022. http://dx.doi.org/10.1130/2022.1220(22).

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ABSTRACT The rifted Precambrian margin of western Laurentia is hypothesized to have consisted of a series of ~330°-oriented rift segments and ~060°-oriented transform segments. One difficulty with this idea is that the 87Sr/86Sri = 0.706 isopleth, which is inferred to coincide with the trace of this rifted margin, is oriented approximately N-S along the western edge of the Idaho batholith and E-W in northern Idaho; the transition between the N-S– and E-W–oriented segments occurs near Orofino, Idaho. We present new paleomagnetic and geochronologic evidence that indicates that the area around Orofino, Idaho, has rotated ~30° clockwise since ca. 85 Ma. Consequently, we interpret the current N-S–oriented margin as originally oriented ~330°, consistent with a Precambrian rift segment, and the E-W margin as originally oriented ~060°, consistent with a transform segment. Independent geochemical and seismic evidence corroborates this interpretation of rotation of Blue Mountains terranes and adjacent Laurentian block. Left-lateral motion along the Lewis and Clark zone during Late Cretaceous–Paleogene time likely accommodated this rotation. The clockwise rotation partially explains the presence of the Columbia embayment, as Laurentian lithosphere was located further west. Restoration of the rotation results in a reconstructed Neoproterozoic margin with a distinct promontory and embayment, and it constrains the rifting direction as SW oriented. The rigid Precambrian rift-transform corner created a transpressional syntaxis during middle Cretaceous deformation associated with the western Idaho and Ahsahka shear zones. During the late Miocene to present, the Precambrian rift-transform corner has acted as a fulcrum, with the Blue Mountains terranes as the lever arm. This motion also explains the paired fan-shaped contractional deformation of the Yakima fold-and-thrust belt and fan-shaped extensional deformation in the Hells Canyon extensional province.

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Zieger, Susan. „From Paper to Pixel“. In The Mediated Mind, 1–20. Fordham University Press, 2018. http://dx.doi.org/10.5422/fordham/9780823279821.003.0001.

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The introduction lays out the book’s terms, critical concerns, method, and historical and theoretical contexts. Explaining how printed ephemera transformed the texture of everyday middle- and working-class life throughout the nineteenth century, peaking in the 1860s and 1890s, it then shows how affect, itself an ephemeral human condition, registered the new social relations that mass media reorganized. The introduction explains the book’s engagement with theorists of media and mass media such as Walter Benjamin, Theodor Adorno and Marx Horkheimer, and Friedrich Kittler; and theorists of affect and mass culture such as Eve Sedgwick, Lauren Berlant, and Kathleen Stewart. It describes the cultural evidence the book assembles, such as temperance medals, cigarette cards, ink blot games, and novels; and describes each chapter.

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Busby, C. J., T. L. Pavlis, S. M. Roeske und B. Tikoff. „The North American Cordillera during the Mesozoic to Paleogene: Selected questions and controversies“. In Laurentia: Turning Points in the Evolution of a Continent. Geological Society of America, 2022. http://dx.doi.org/10.1130/2022.1220(31).

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ABSTRACT The North American Cordillera experienced significant and varied tectonism during the Triassic to Paleogene time interval. Herein, we highlight selected questions and controversies that remain at this time. First, we describe two tectonic processes that have hindered interpretations of the evolution of the orogen: (1) strike-slip systems with poorly resolved displacement; and (2) the closing of ocean basins of uncertain size, origin, and mechanism of closure. Next, we divide the orogen into southern, central, and northern segments to discuss selected controversies relevant to each area. Controversies/questions from the southern segment include: What is the origin of cryptic transform faults (Mojave-Sonora megashear vs. California Coahuila transform fault)? Is the Nazas an arc or a continental rift province? What is the Arperos basin (Guerrero terrane), and did its closure produce the Mexican fold-and-thrust belt? How may inherited basement control patterns of deformation during subduction? Controversies/questions from the central segment include: Can steeply dipping mantle anomalies be reconciled with geology? What caused high-flux events in the Sierra Nevada batholith? What is the origin of the North American Cordilleran anatectic belt? How does the Idaho segment of the orogen connect to the north and south? Controversies/questions from the northern segment include: How do we solve the Baja–British Columbia problem? How big and what kind of basin was the Early Cretaceous lost ocean basin? What connections can be found between Arctic geology and Cordilleran geology in Alaska? How do the Cretaceous tectonic events in the Arctic and northern Alaska connect with the Cordilleran Cretaceous events? What caused the Eocene tectonic transitions seen throughout the northern Cordillera? By addressing these questions along the length of the Cordillera, we hope to highlight common problems and facilitate productive discussion on the development of these features.

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Junior, Nyasha, und Jeremy Schipper. „Black Samson of Brandywine“. In Black Samson, 23–34. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780190689780.003.0003.

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Henry Wadsworth Longfellow was not the only writer to popularize a Black Samson figure. Moving away from treating Samson as an abolitionist hero, other writers continued to develop this uniquely American Samson figure within folklore, fiction, and poetry in the nineteenth and early twentieth centuries. Black Samson became immortalized in Paul Laurence Dunbar’s “Black Samson of Brandywine,” which transformed Samson into a symbol of African American achievement. In this chapter, we highlight the writers who offer new understandings of Samson as a loyal American patriot. Folklore about the Battle of Brandywine developed a less revolutionary and more conciliatory image of Black Samson than those modeled after the biblical story.

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Hedayat Munroe, Nazanin. „Weaving Stories, Weaving Self: Layla and Majnun as Sufi Icons“. In Sufi Lovers, Safavid Silks and Early Modern Identity. Nieuwe Prinsengracht 89 1018 VR Amsterdam Nederland: Amsterdam University Press, 2022. http://dx.doi.org/10.5117/9789463721738_ch03.

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Silks depicting Layla and Majnun are examined with the corresponding narrative in the Khamsa of Nizami Ganjavi. The tale is summarized and analyzed as an allegory of the Sufi concept of the evolution of humankind through love, as Majnun is transformed by Nizami from a love-struck madman into the prototype for Sufi mystic practice. Two silk designs are signed by Ghiyath al-Din illustrating Layla visiting Majnun in the wilderness, a scene not found in Nizami’s Khamsa. The concept of javab-gui (‘literary response’) is presented as the foundation of Persian epic poetry. Amir Khusrau (d. 1325), the Sufi Turco-Indian poet laureate of Delhi, is discussed as the author upon whose Khamsa the scenes are derived. The relationship between poetry and textile weaving is analyzed through passages from Persian poetry.

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Ma, Chong, Willis E. Hames, David A. Foster, Wenjiao Xiao, Paul A. Mueller und Mark G. Steltenpohl. „Transformation of eastern North America from compression to extension in the Permian–Triassic“. In Laurentia: Turning Points in the Evolution of a Continent. Geological Society of America, 2022. http://dx.doi.org/10.1130/2022.1220(28).

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ABSTRACT The record of Permian–Triassic evolution in eastern North America indicates an important change in the tectonic regime from compression to extension as eastern Laurentia transitioned from the Alleghanian orogeny to continental rifting associated with the breakup of Pangea. The temporal pace (e.g., gradual vs. episodic, diachronous vs. synchronous), the accommodating structures, and the influential processes that characterized this transition provide critical insights into the late Paleozoic evolution of Laurentia and rifted continental margins in general. Connections between the formation of the South Georgia basin and regional cooling of the southernmost Appalachian crystalline rocks, along with the distribution of normal faults and discontinuities in metamorphic grade, indicate extensional collapse of the Alleghanian orogen along an extensive detachment system that was active from ca. 295 to 240 Ma. The 40Ar/39Ar cooling ages of biotites from low-angle normal shear zones cutting migmatitic gneisses of the southernmost Appalachians are interpreted to document extensional faulting ca. 280 Ma and to provide a snapshot of the prolonged orogenic collapse. The timing, orientation of structures, extent of reactivation, and character of late Alleghanian extension in the central and northern Appalachians provide an orogen-scale framework for this tectonic transition. This contribution focuses on correlations between the beginning of orogenic collapse and the initiation of continental rifting along with the tectonic processes that transformed eastern North America from a convergent to divergent plate boundary following the Alleghanian orogeny.

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Konferenzberichte zum Thema "LAURENT TRANSFORM"

Oliveira, H. M. de, R. M. Campello de Souza und R. C. de Oliveira. „A Matrix Laurent Series-based Fast Fourier Transform for Blocklengths N≡4 (mod 8)“. In XXVII Simpósio Brasileiro de Telecomunicações. Sociedade Brasileira de Telecomunicações, 2009. http://dx.doi.org/10.14209/sbrt.2009.57813.

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Oliveira, R. C. de, H. M. de Oliveira, R. Campello de Souza und Edval J. P. Santos. „A flexible implementation of a matrix Laurent series-based 16-point fast Fourier and Hartley transforms“. In 2010 VI Southern Programmable Logic Conference (SPL). IEEE, 2010. http://dx.doi.org/10.1109/spl.2010.5483017.

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SOLÁ, IGNACIO R., BO Y. CHANG, JESÚS SANTAMARÍA und VLADIMIR S. MALINOVSKY. „ADIABATIC REGIMES OF POPULATION TRANSFER IN MOLECULAR SYSTEMS“. In With Foreword by Prof A H Zewail, Nobel Laureate in Chemistry, 1999. WORLD SCIENTIFIC, 2002. http://dx.doi.org/10.1142/9789812777980_0040.

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ZIMMERMANN, C., R. EICHBERGER, S. RAMAKRISHNA, W. STORCK und F. WILLIG. „PHOTOINDUCED HETEROGENEOUS ELECTRON TRANSFER MODULATED BY A VIBRATIONAL WAVEPACKET“. In With Foreword by Prof A H Zewail, Nobel Laureate in Chemistry, 1999. WORLD SCIENTIFIC, 2002. http://dx.doi.org/10.1142/9789812777980_0068.

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LOCHBRUNNER, S., K. STOCK, V. DE WAELE und E. RIEDLE. „ULTRAFAST EXCITED STATE PROTON TRANSFER: REACTIVE DYNAMICS BY MULTIDIMENSIONAL WAVEPACKET MOTION“. In With Foreword by Prof A H Zewail, Nobel Laureate in Chemistry, 1999. WORLD SCIENTIFIC, 2002. http://dx.doi.org/10.1142/9789812777980_0019.

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GRANUCCI, GIOVANNI, THU-HOA TRAN-THI, THOMAS GUSTAVSSON, PHILIPPE MILLIÉ und JAMES T. HYNES. „NEW THEORETICAL IDEAS FOR AN OLD PROBLEM: EXCITED STATE PROTON TRANSFER IN SOLUTION“. In With Foreword by Prof A H Zewail, Nobel Laureate in Chemistry, 1999. WORLD SCIENTIFIC, 2002. http://dx.doi.org/10.1142/9789812777980_0016.

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PROKHORENKO, VALENTIN I., MARTIN KATTERLE, ALFRED R. HOLZWARTH, KURT SCHAFFNER, TOMOHIRO MIYATAKE und HITOSHI TAMIAKI. „ENERGY TRANSFER FROM SUPRAMOLECULAR ASSEMBLIES OF SYNTHETIC ZINC CHLORINS TO ATTACHED ENERGY TRAPS“. In With Foreword by Prof A H Zewail, Nobel Laureate in Chemistry, 1999. WORLD SCIENTIFIC, 2002. http://dx.doi.org/10.1142/9789812777980_0077.

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VENDRELL, O., M. MORENO und J. M. LLUCH. „TUNNELING IN 5-METHYLTROPOLONE: COUPLING BETWEEN INTERNAL ROTATION OF METHYL GROUP AND PROTON TRANSFER“. In With Foreword by Prof A H Zewail, Nobel Laureate in Chemistry, 1999. WORLD SCIENTIFIC, 2002. http://dx.doi.org/10.1142/9789812777980_0010.

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MARTIN, M. M., P. PLAZA, P. CHANGENET-BARRET und A. SIEMIARCZUK. „A NEW ANALYSIS OF THE SOLVENT-INDUCED CHARGE TRANSFER IN ADMA BY SUBPICOSECOND SPECTROSCOPY“. In With Foreword by Prof A H Zewail, Nobel Laureate in Chemistry, 1999. WORLD SCIENTIFIC, 2002. http://dx.doi.org/10.1142/9789812777980_0027.

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LOCHBRUNNER, S., K. STOCK, T. FIEBIG, E. PANDURSKI und E. RIEDLE. „ULTRAFAST FEMTOSECOND CHARGE TRANSFER: SWITCHING FROM ADIABATIC TO NONADIABATIC DYNAMICS BY SMALL STRUCTURAL CHANGES“. In With Foreword by Prof A H Zewail, Nobel Laureate in Chemistry, 1999. WORLD SCIENTIFIC, 2002. http://dx.doi.org/10.1142/9789812777980_0033.

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Berichte der Organisationen zum Thema "LAURENT TRANSFORM"

Hayward, N., und S. Paradis. Geophysical reassessment of the role of ancient lineaments on the development of the western margin of Laurentia and its sediment-hosted Zn-Pb deposits, Yukon and Northwest Territories. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/330038.

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The role of crustal lineaments in the development of the western margin of Laurentia, Selwyn basin and associated sediment-hosted Zn-Pb deposits (clastic-dominated, Mississippi-Valley-type) in Yukon and NWT, are reassessed through a new 3-D inversion strategy applied to new compilations of gravity and magnetic data. Regionally continuous, broadly NE-trending crustal lineaments including the Liard line, Fort Norman structure, and Leith Ridge fault, were interpreted as having had long-standing influence on craton, margin, and sedimentary basin development. However, multiple tectonic overprints including terrane accretion, thrust faulting, and plutonism obscure the region's history. The Liard line, related to a transfer fault that bounds the Macdonald Platform promontory, is refined from the integration of the new geophysical models with published geological data. The geophysical models support the continuity of the Fort Norman structure below the Selwyn basin, but the presence of Leith Ridge fault is not supported in this area. The ENE-trending Mackenzie River lineament, traced from the Misty Creek Embayment to Great Bear Lake, is interpreted to mark the southern edge of a cratonic promontory. The North American craton is bounded by a NW-trending lineament interpreted as a crustal manifestation of lithospheric thinning of the Laurentian margin, as echoed by a change in the depth of the lithosphere-asthenosphere boundary. The structure is straddled by Mississippi Valley-type Zn-Pb occurrences, following their palinspastic restoration, and also defines the eastern limit of mid-Late Cretaceous granitic intrusions. Another NW-trending lineament, interpreted to be associated with a shallowing of lower crustal rocks, is coincident with clastic-dominated Zn-Pb occurrences.

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FICHE D’INFORMATION : D’auto-défenseurs à justiciers : un cadre typologique pour les groupes armés communautaires. RESOLVE Network, Dezember 2020. http://dx.doi.org/10.37805/fs2020.6.cbags.fr.

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Cette fiche d’information présente un aperçu des conclusions de l’effort de cartographie de l’Initiative de recherche sur les groupes armés communautaires du RESOLVE Network qui étudie la dynamique des groupes armés communautaires (GAC) pour identifier des approches potentielles visant à les engager, les gérer et les transformer. Ce rapport de recherche développe un cadre typologique pour améliorer la compréhension de ces groupes dans les réseaux politiques et de sécurité informels, et identifie les fonctions internes les plus reconnues quant au positionnement des GAC dans les relations entre l’État et la société, ainsi que les facteurs externes à l’origine des transformations des GAC. Pour en savoir plus sur la méthodologie et les résultats de la recherche, veuillez vous référer au rapport de recherche RESOLVE de Lauren Van Metre associé à cette fiche d’information : From Self-Defense to Vigilantism: A Typology Framework of Community-Based Armed Groups (D’auto-défenseurs à justiciers : un cadre typologique pour les groupes armés communautaires).

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