Bibliographies thématiques / Modulo geometrico

Littérature scientifique sur le sujet « Modulo geometrico »

Auteur : Grafiati
Publié le 11 mars 2023

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Articles de revues sur le sujet "Modulo geometrico"

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Kaneko, Hajime. « Distribution of Geometric Sequences Modulo 1 ». Results in Mathematics 52, no 1-2 (21 juillet 2008) : 91–109. http://dx.doi.org/10.1007/s00025-008-0287-3.

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Sovrano, Valeria Anna, et Giorgio Vallortigara. « Dissecting the Geometric Module ». Psychological Science 17, no 7 (juillet 2006) : 616–21. http://dx.doi.org/10.1111/j.1467-9280.2006.01753.x.

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Bekti, Novita, Winda Dwi, Nofefta Gola, Reni Raudhotus, Lailatul Nuraini et Firdha Kusuma Ayu Anggraeni. « PENGEMBANGAN MODUL INTERAKTIF BERBASIS MACROMEDIA FLASH 8 PADA MATERI OPTIK GEOMETRI ». ORBITA : Jurnal Kajian, Inovasi dan Aplikasi Pendidikan Fisika 7, no 1 (5 mai 2021) : 123. http://dx.doi.org/10.31764/orbita.v7i1.3971.

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ABSTRAKTeknologi yang berkembang semakin pesat menuntut adanya inovasi dalam dunia pendidikan demi terwujudnya pendidikan yang bermutu. Modul interaktif menjadi salah satu solusi dalam penyampaian materi di setiap pembelajaran. Hal ini dikarenakan tampilan modul yang menarik dan jelas. Tujuan penelitian ini ialah untuk mendeskripsikan respon mahasiswa terhadap pengembangan modul interaktif berbasis macromedia flash 8 pada materi optik geometri. Penelitian ini merupakan penelitian pengembangan dengan menggunakan model pengembangan ADDIE. Modul ini dilengkapi dengan animasi pendukung materi serta soal-soal latihan agar mahasiswa mampu mengasah kemampuannya setelah mempelajari modul tersebut. Subyek penelitian ini ialah mahasiswa mata kuliah Fisika Dasar III di Program Studi Pendidikan Fisika Universitas Jember dengan teknik pengumpulan data menggunakan angket respon. Hasil yang diperoleh dari penyebaran angket respon yakni 79,8% dengan kategori baik. Sehingga dapat disimpulkan bahwa modul interaktif ini diterima dengan baik oleh mahasiswa dan dapat membantu mahasiswa dalam proses pembelajaran pada materi optik geometri. Kata Kunci : macromedia flash 8; modul interaktif; optik geometri. ABSTRACTTechnology that is growing rapidly demands innovation in the world of education for the sake of a quality education. The interactive module is one of the solutions in delivering material in each lesson. This is due to the attractive and clear appearance of the module. The purpose of this study was to describe the student's response to the development of an interactive module based on macromedia flash 8 on geometric optics. This research is a development research using the ADDIE development model. This module is equipped with animation supporting material and practice questions so that students are able to hone their skills after studying the module. The subjects of this study were students of the Basic Physics subject III in the Physics Education Study Program of the University of Jember. The data collection technique used a response questionnaire to collect data. The results obtained from the distribution of response questionnaires were 79,8% with good categories. So it can be concluded that this interactive module is well received by students and can help students in the learning process on geometric optical material. Keywords : macromedia flash 8; an interactive module; optical geometry
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Dunn, Corey, et Zoë Smith. « Algebraic restrictions on geometric realizations of curvature models ». Archivum Mathematicum, no 3 (2021) : 175–94. http://dx.doi.org/10.5817/am2021-3-175.

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Seppala, M., et T. Sorvali. « Geometric moduli for klein surfaces ». Rocky Mountain Journal of Mathematics 19, no 3 (septembre 1989) : 939–46. http://dx.doi.org/10.1216/rmj-1989-19-3-939.

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ELSENHANS, ANDREAS-STEPHAN, et JÖRG JAHNEL. « On the computation of the Picard group for K3 surfaces ». Mathematical Proceedings of the Cambridge Philosophical Society 151, no 2 (10 juin 2011) : 263–70. http://dx.doi.org/10.1017/s0305004111000326.

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AbstractWe present a method to construct examples of K3 surfaces of geometric Picard rank 1. Our approach is a refinement of that of R. van Luijk. It is based on an analysis of the Galois module structure on étale cohomology. This allows us to abandon the original limitation to cases of Picard rank 2 after reduction modulo p. Furthermore, the use of Galois data enables us to construct examples that require significantly less computation time.
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Demchyshyn, Anatoliy, et Ganna Smakovska. « Research of Geometric and Information Models for Awning Structures ». Mathematical and computer modelling. Series : Technical sciences 23 (6 décembre 2022) : 36–44. http://dx.doi.org/10.32626/2308-5916.2022-23.36-44.

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The article analyzes membrane (awning) structures, which become relevant due to their cost-effectiveness and the creation of original forms. The characteristics of awning structures, the possibilities of molding, the use of various materials and combined options for com-bining an awning with other materials are considered. Due to their cost-effectiveness, tent structures are becoming increasingly popular today, because in modern socio-economic conditions there is a need for the rapid construction of low-cost buildings to overcome the shortage of mobile housing and structures for other purposes. In the conditions of restoration of the lost objects of buildings and structures, the use of tent coverings is important. Their development was held back for a long time due to the non-compliance of domestic tent materials with the high requirements for tent coverings of this type, namely: strength, durability, color diversity, light fastness, etc. The use of hinged struc-tures allows you to create small architectural forms and mobile build-ingsthat are not only quickly erected, but also easilytransformed in accordance with a change in functionality. This allows you to create new types of objects, such as stadiums, airports, giant greenhouses, bo-tanical gardens, warehouses, etc. Modern technologies combine the advantages of industrial construction methods with the individualiza-tion of form and open the way to the use of various awning structures. Membrane coatings, as one of the modern trends in the presentation of a new form of roofing, create new spatial characteristics of architectur-al objects. They form expanses freed from bulky internal structures. The freedom of space determines the flexibility and functionality of its use, a high degree of adaptation and, as a result, the durability of the space and structure. Having a wide variety of forms, this type of coat-ing has broad prospects for use along with other architectural and struc-tural systems. To ensure such characteristics, the article proposes an in-formation model of the proportionality of the elements of the architec-tural form, established on the basis of the information modularity of the relations of the elements for the volumetric structure.
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Lapkovsky, Serhii, Liudmyla Danylova, Volodymyr Frolov, Vasyl Prykhodko et Maksym Gladskyi. « GEOMETRIC ASPECT OF CHOOSING MODELS OF BASIC TECHNOLOGICAL EQUIPMENT ». Technical Sciences and Technologies, no 4(30) (2022) : 40–49. http://dx.doi.org/10.25140/2411-5363-2022-4(30)-40-49.

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Now methodological aspect of choosing machine tools is still not worked out, we can clearly conclude that it is a very urgent task that needs a special attention and responsibility. The purpose of the article is to create methodological foundations for a more justified choice of models of metal cutting machines when designing technological processes of manufacturing parts. It is proved in the article that the geometry of surfaces is the dominant feature of the items in the solution of the problem of choosing a particular model of machine tool, which can provide a process forthe manufacture of the part.
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Zhang, Zi Li, Jiang Yuan, Wei Hu Zhou, Ya Wei Wang et Yan Xu. « Design and Implementation of Software System for Large-Scale Coordinate Measurement Based on the Laser Tracker ». Applied Mechanics and Materials 103 (septembre 2011) : 320–26. http://dx.doi.org/10.4028/www.scientific.net/amm.103.320.

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The laser tracking system is widely used in the large-scale measurement field in industry providing accurate spatial information of measured objects. In this paper, the frame of software system for the laser tracker is introduced, as well as the design and implementation of each module. With the help of the software, customers can attain high precision measuring results within large volume. Functions of information communication, command control, error calibration and compensation, geometric element analysis and display can also be realized. The software system is divided into six modules, including the interconnect communication and on-line control module, error calibration and compensation module, data analysis module, database management module, 3D display of geometrical elements and man-machine interface. The design and construction of each module is described in detail which can help customers realize different functions throughout the measuring process.
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Becker, Katrin, Melanie Becker, Cumrun Vafa et Johannes Walcher. « Moduli stabilization in non-geometric backgrounds ». Nuclear Physics B 770, no 1-2 (mai 2007) : 1–46. http://dx.doi.org/10.1016/j.nuclphysb.2007.01.034.

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Thèses sur le sujet "Modulo geometrico"

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Van, Bloemestein Ulric Patrick. « Seasonal movement and activity patterns of the endangered geometric tortoise, Psammobates geometricus ». Thesis, University of the Western Cape, 2005. http://etd.uwc.ac.za/index.php?module=etd&amp.

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Due to the critical status of Psammobates geometricus and the vulnerability of their habitat, there is a need to allocate areas for their protection. The aim of this study was to provide information on the space requirements and activity level of geometric tortoises to facilitate future conservation efforts.
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Centazzo, Alessandro. « Strategie di riorientamento nei bambini : uno studio in stanze grandi e piccole e in ambienti virtuali ». Doctoral thesis, Università degli studi di Trieste, 2014. http://hdl.handle.net/10077/10069.

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2012/2013
La maggior parte delle specie animali è capace di recuperare l’orientamento dopo essere stata passivamente disorientata e lo fa utilizzando le informazioni provenienti dall’ambiente, informazioni che possono essere di tipo geometrico (come per esempio la forma di una superficie contornata da margini) o di tipo non-geometrico come per esempio punti di riferimento –landmark- o, in una stanza, il colore diverso di una parete. Nel nostro lavoro abbiamo indagato la capacità di riorientamento di bambini a partire dai 6 anni. Il compito consisteva nel trovare, dopo essere stati disorientati, un oggetto che i bambini avevano visto nascondere in prossimità di un angolo di una stanza rettangolare (in prossimità di ogni angolo era presente una struttura che fingeva da nascondiglio) nella quale una parete aveva un colore diverso dalle altre. Abbiamo cercato di capire come venissero utilizzate le informazioni geometriche e non-geometriche quando queste venivano messe in conflitto tra loro (affine transformation). Per fare ciò, il colore diverso della parete veniva cambiato (passando dal lato lungo a quello corto o viceversa) tra la fase di addestramento, nella quale il soggetto vedeva dove veniva nascosto l’oggetto da cercare, e la fase di ricerca, nella quale l’oggetto doveva essere ritrovato. La nostra ricerca si è articolata in più fasi. In un primo momento abbiamo pensato di riprodurre gli esperimenti presenti in letteratura e indicativi di un utilizzo più consistente delle informazioni geometriche negli ambienti piccoli rispetto a quelli grandi. A differenza da quanto riportato in letteratura non abbiamo trovato differenze tra la stanza grande e quella piccola: in entrambe i bambini prediligono le informazioni geometriche. Successivamente abbiamo impegnato i bambini nel medesimo compito ma in stanze con caratteristiche diverse. Abbiamo utilizzato stanze nelle quali il nascondiglio aveva dimensioni dimezzate rispetto alle stanze precedenti, oppure non era presente, e stanze nelle quali abbiamo diminuito il rapporto tra le lunghezze dei lati lungo e corto (stanze che abbiamo chiamato “quasi-quadrate”). Tra le diverse tipologie di stanza è stata calcolata un’analisi della varianza che ha messo in luce che la forma (e non la dimensione) della stanza e la presenza o assenza dei nascondigli sono le due variabili che condizionano maggiormente le scelte dei soggetti. In particolare, i bambini prediligono le informazioni geometriche quando non sono presenti i nascondigli e quando le stanze sono “quasi-quadrate”. Dai nostri dati emerge che i bambini sono in grado di utilizzare tutte le informazioni a disposizione. Il prediligere un tipo piuttosto che l’altro dipende dalle caratteristiche dell’ambiente e probabilmente dalla stima di quanto una determinata informazione è affidabile per recuperare l’orientamento. La teoria della combinazione adattativa è quella che sembra spiegare meglio i risultati che abbiamo trovato.
XXV - Ciclo
1972
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MIRAGLIOTTA, ELISA. « La previsione geometrica : un modello per analizzare un processo cognitivo inerente il problem-solving in geometria ». Doctoral thesis, Università degli studi di Modena e Reggio Emilia, 2020. http://hdl.handle.net/11380/1200566.

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La ricerca mira a studiare gli aspetti cognitivi coinvolti nella produzione di previsioni geometriche durante la risoluzione di problemi nell’abito della Geometria Euclidea. Si può considerare il processo di previsione geometrica come una specifica abilità visuo-spaziale coinvolta nel pensiero geometrico. Infatti, durante il processo di risoluzione di un problema geometrico, un solutore può immaginare diverse trasformazioni della figura e i loro effetti; tali trasformazioni possono essere più o meno coerenti con i vincoli teorici dati dal problema. Inoltre, i prodotti di tali trasformazioni possono inibire o supportare il processo risolutivo. Ricerche precedenti hanno evidenziato e posto l’attenzione sulla natura degli oggetti geometrici, considerando sia la componente concettuale che la componente figurale. Interpretando il pensiero geometrico in termini di dialettica tra questi due aspetti (Fischbein, 1993), lo studio mira a comprendere il processo di previsione geometrica, inteso come un processo attraverso il quale una figura viene manipolata, i suoi cambiamenti immaginati, mentre alcune proprietà vengono mantenute invarianti. Il processo di previsione geometrica viene descritto attraverso un modello di generazione di previsioni elaborato ciclicamente: osservando, analizzando secondo un approccio microgenetico e analizzando nuovamente il comportamento di diversi solutori durante la risoluzione di problemi aperti di previsione proposti sia in ambiente carta e penna che in un Ambiente di Geometria Dinamica (AGD). I problemi aperti di previsione progettati per lo studio sono stati proposti durante interviste task-based a solutori coinvolti su base volontaria. Hanno preso parte allo studio un totale di 37 solutori italiani tra studenti di scuola secondaria di secondo grado, studenti di laurea triennale e magistrale e di dottorato in Matematica. I dati constano di registrazioni video e audio, trascrizioni delle interviste, disegni dei solutori. La versione finale del modello descrive i processi di previsione di un solutore coinvolto nella risoluzione dei problemi aperti di previsione proposti nello studio. Inoltre, il modello fornisce una lente teorica utile per analizzare le produzioni dei solutori e comprendere più profondamente i processi di previsione. In particolare, il modello chiarisce il ruolo cruciale sia degli elementi teorici introdotti dal solutore durante il processo risolutivo, sia del controllo teorico che i solutori esercitano. Lo studio ha implicazioni didattiche, utili in particolar modo per la scuola secondaria di secondo grado, per la progettazione di attività volte a promuovere il pensiero geometrico degli studenti e il loro controllo teorico sulle figure geometriche.
The purpose of the research is to study cognitive aspects of how geometric predictions are produced during problem-solving activities in Euclidean geometry. The process of geometric prediction is seen as a specific visuo-spatial ability involved in geometrical reasoning. Indeed, when solvers engage in solving a geometrical problem, they can imagine the consequences of transformations of the figure; such transformations can be more or less coherent with the theoretical constraints given by the problem, and the products of such transformations can hinder or promote the problem-solving process. Previous research has stressed the dual nature of geometrical objects, intertwining a conceptual component and a figural component. Interpreting geometrical reasoning in terms of a dialectic between these two aspects (Fischbein, 1993), this study aims at gaining insight into the cognitive process of geometric prediction, a process through which a figure is manipulated, and its change is imagined, while certain properties are maintained invariant. This process is described through a model of prediction-generation elaborated cyclically by observing, analyzing through a microgenetic approach, and re-analyzing solvers’ resolution of prediction open problems in a paper-and-pencil environment and in a Dynamic Geometry Environment (DGE). The prediction open problems designed were proposed during task-based interviews to participants selected on a voluntary basis. Participants were a total of 37 Italian high school students and undergraduate, graduate and PhD students in mathematics. Data are composed of video and audio recordings, transcriptions, solvers’ drawings. The final version of the model provides a description of the prediction processes accomplished by a solver who engages in the resolution of prediction open problems proposed in this study; it provides a lens through which solvers’ productions can be analyzed and it provides insight into prediction processes. In particular, it sheds light onto the key role played by theoretical elements that are introduced by the solvers during the resolution process and the key role played by the solver’s theoretical control. The study has implications for the design of activities, especially at the high school level, with the educational objective of fostering students’ geometrical reasoning and in particular their theoretical control over the geometrical figures.
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Caruso, Monica. « Geometrie non euclidee : dalla negazione del V postulato all'interpretazione geometrica del cosmo ». Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018.

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La tesi è incentrata sulle geometrie non euclidee. Al di là della descrizione dei vari modelli, essa si propone di evidenziare e accertare il fatto che tutte le geometrie, euclidee e non, abbiano pari dignità, fatto oggi pienamente condiviso, ma che era messo in dubbio al momento della loro genesi. Il primo è un capitolo introduttivo riguardo alla storia della geometria, che mira a evidenziare il cambio di prospettiva da una geometria intesa come "misura della terra" a una disciplina svincolata da ogni applicazione pratica. Si arriva poi all'opera di Euclide. A una descrizione sommaria degli Elementi, segue un'analisi del V postulato euclideo che, a differenza dei primi quattro postulati, i quali risultavano intuitivamente evidenti, non era così immediato. Molti studiosi per secoli cercarono invano di dedurlo dagli altri quattro assiomi ma, i tentativi sempre falliti, portarono, fra la fine del XVIII e l'inizio del XIX secolo, all'idea di considerare dei modelli che contemplassero solo i primi quattro postulati e una delle due possibili negazioni del V assioma: nacquero così le geometrie non euclidee. Nel terzo capitolo si scopre che tutte e tre le geometrie sono manifestazioni diverse di un unico concetto generale che le trascende tutte: la curvatura. Lo studio delle geometrie non euclidee e la generalizzazione del concetto di curvatura alle dimensioni superiori, hanno consentito di intraprendere, nel quarto capitolo, un'interpretazione geometrica dell'universo, volta a capire quale geometria risulta più adatta per descriverlo, permettendoci di mostrare la naturale interdisciplinarità delle geometrie non euclidee. Il quinto capitolo, infine, considera gli aspetti didattici attraverso un'analisi delle Indicazioni nazionali e dei libri di testo in merito all'argomento, e ai progetti volti a promuovere un approccio maturo e consapevole al moderno sistema assiomatico e alla geometria di Euclide.
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Alqahtani, Lamia Saeed M. « Geometric flows on soliton moduli spaces ». Thesis, University of Leeds, 2013. http://etheses.whiterose.ac.uk/4967/.

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It is well known that the low energy dynamics of many types of soliton can be approximated by geodesic motion on Mn, the moduli space of static n-solitons, which is usually a Kähler manifold. This thesis presents a detailed study of magnetic geodesic motion on a Kähler manifold in the case where the magnetic field 2-form is the Ricci form. This flow, which we call Ricci Magnetic Geodesic (RMG) flow, is first studied in general. A symmetry reduction result is proved which allows one to localize the flow onto the fixed point set of any group of holomorphic isometries of a Kähler manifold M. A subtlety of this reduction, which was overlooked by Krusch and Speight, is pointed out. Since RMG flow occurs at constant speed, it follows immediately that the flow is complete if M is geodesically complete. We show, by means of an explicit counterexample that, contrary to a conjecture of Krusch and Speight, the converse is false: it is possible for a geodesically incomplete manifold to be RMG complete. RMG completeness of metrically incomplete manifolds is therefore a nontrivial issue, and one which will be addressed repeatedly in later chapters. We then specialize to the case where Mn is the moduli space of abelian Higgs n-vortices, which is the context in which RMG flow was first proposed, by Collie and Tong, as a low energy model of the dynamics of a certain type of Chern-Simons n-vortices on ℝ2. The unit vortex is constructed numerically, and its asymptotics is studied. It is shown that, contrary to an assertion of Collie and Tong, RMG flow does not coincide with an earlier proposed magnetic geodesic model of vortex motion due to Kim and Lee. It is further shown that Kim and Lee’s model is ill-defined on the vortex coincidence set. An asymptotic formula for the scattering angle of well-separated vortices executing RMG flow is computed. We then change the spatial geometry, placing the vortices on the hyperbolic plane of critical curvature. An explicit formula for the two-vortex metric is derived, extending the results of Strachan, who computed the metric on a submanifold of centred 2-vortices. The RMG flow localized on this submanifold is compared with its intrinsic RMG flow, revealing strong qualitative differences. We then study the moduli space Hn,k(∑) of degree n ℂPk lumps on a compact Riemann surface ∑. It is shown that Rat1 = H1,1(S2) is RMG complete (despite being metrically incomplete). The Einstein-Hilbert action of H1,k(S2) is computed, supporting (for k > 1) a conjecture of Baptista. A natural class of topologically cylindrical submanifolds of Hn,1(∑), called dilation cylinders, is studied: their volumes are computed, and it is shown that they are all isometrically embeddable as surfaces of revolution in R3. Conditions under which they are totally geodesic, for ∑ = S2 and T2, are found, and RMG flow on some examples is studied. Finally, a new metric on Hn,1(∑), derived from the Baby-Skyrme model, is introduced. On Rat1, this metric is determined explicitly and some geometric aspects such as the volume, geodesic flow and the spectral problem with respect to this metric are studied.
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Ferro, Dennis Eduardo Zavaleta. « Some geometric aspects of non-linear sigma models / ». São Paulo, 2016. http://hdl.handle.net/11449/151647.

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Orientador: Andrei Mikhailov
Resumo: We review some relevant examples for String Theory of non-linear sigma models. These are bosonic strings propagating in curved background, the Wess-Zumino-Witten model and superstrings in flat and AdS superspace. The mathematical tools required for the study of these models (e.g. topological quantization, Cartan geometry, Lie superalgebras and geometry on coset spaces) are also described. Throughout the dissertation we have focused on classical aspects of these models such as the construction of the action and its symmetries where conditions for holomorphic symmetry of the bosonic string case were found.
Mestre
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Nandihalli, Sunil S. « A B-spline geometric modeling methodology for free surface simulation ». Master's thesis, Mississippi State : Mississippi State University, 2004. http://library.msstate.edu/etd/show.asp?etd=etd-04072004-185017.

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Lundkvist, Christian. « Moduli spaces of zero-dimensional geometric objects ». Doctoral thesis, Stockholm : Matematik, Kungliga Tekniska högskolan, 2009. http://www.diva-portal.org/smash/record.jsf?searchId=1&pid=diva2:223079.

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Tarasca, Nicola. « Geometric cycles on moduli spaces of curves ». Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät II, 2012. http://dx.doi.org/10.18452/16518.

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Ziel dieser Arbeit ist die explizite Berechnung gewisser geometrischer Zykel in Modulräumen von Kurven. In den letzten Jahren wurden Divisoren auf $\Mbar_{g,n}$ ausgiebig untersucht. Durch die Berechnung von Klassen in Kodimension 1 konnten wichtige Ergebnisse in der birationalen Geometrie der Räume $\Mbar_{g,n}$ erzielt werden. In Kapitel 1 geben wir einen Überblick über dieses Thema. Im Gegensatz dazu sind Klassen in Kodimension 2 im Großen und Ganzen unerforscht. In Kapitel 2 betrachten wir den Ort, der im Modulraum der Kurven vom Geschlecht 2k durch die Kurven mit einem Büschel vom Grad k definiert wird. Da die Brill-Noether-Zahl hier -2 ist, hat ein solcher Ort die Kodimension 2. Mittels der Methode der Testflächen berechnen wir die Klasse seines Abschlusses im Modulraum der stabilen Kurven. Das Ziel von Kapitel 3 ist es, die Klasse des Abschlusses des effektiven Divisors in $\Mbar_{6,1}$ zu berechnen, der durch punktierte Kurven [C, p] gegeben ist, für die ein ebenes Modell vom Grad 6 existiert, bei dem p auf einen Doppelpunkt abgebildet wird. Wie Jensen gezeigt hat, erzeugt dieser Divisor einen extremalen Strahl im pseudoeffektiven Kegel von $\Mbar_{6,1}$. Ein allgemeines Ergebnis über gewisse Familien von Linearsystemen mit angepasster Brill-Noether-Zahl 0 oder -1 wird eingeführt, um die Berechnung zu vervollständigen.
The aim of this thesis is the explicit computation of certain geometric cycles in moduli spaces of curves. In recent years, divisors of $\Mbar_{g,n}$ have been extensively studied. Computing classes in codimension one has yielded important results on the birational geometry of the spaces $\Mbar_{g,n}$. We give an overview of the subject in Chapter 1. On the contrary, classes in codimension two are basically unexplored. In Chapter 2 we consider the locus in the moduli space of curves of genus 2k defined by curves with a pencil of degree k. Since the Brill-Noether number is equal to -2, such a locus has codimension two. Using the method of test surfaces, we compute the class of its closure in the moduli space of stable curves. The aim of Chapter 3 is to compute the class of the closure of the effective divisor in $\M_{6,1}$ given by pointed curves [C,p] with a sextic plane model mapping p to a double point. Such a divisor generates an extremal ray in the pseudoeffective cone of $\Mbar_{6,1}$ as shown by Jensen. A general result on some families of linear series with adjusted Brill-Noether number 0 or -1 is introduced to complete the computation.
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Vieira, Erica Pinheiro. « Produção digital de maquetes arquitetonicas : um estudo exploratorio ». [s.n.], 2007. http://repositorio.unicamp.br/jspui/handle/REPOSIP/257720.

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Orientador: Maria Gabriela Caffarena Celani
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo
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Resumo: Este trabalho consiste em um estudo exploratório sobre a produção digital de maquetes arquitetônicas. Inicialmente, foi realizada uma revisão bibliográfica com a finalidade de conhecer os novos métodos de produção digital de maquetes, incluindo software de modelagem e equipamentos de prototipagem rápida. Nesse estudo inicial, além de explorar os principais equipamentos, processos, aplicações e materiais, identificou-se dois arquitetos renomados que fazem uso dessa tecnologia nos seus processos de projeto: Frank Gehry e Norman Foster. Deste estudo verificou-se processos distintos de projeto e diferentes abordagens sobre a utilização dessas ferramentas, o que motivou a realização de experimentos para exemplificar como produzir digitalmente maquetes arquitetônicas. O Museu Guggenheim de Bilbao, de Frank Gehry, foi escolhido como variável fixa para realização dos experimentos de produção digital de maquetes, por ser um modelo de grande complexidade, permitindo testar os limites dos equipamentos de prototipagem rápida disponíveis no Laboratório de Prototipagem para Arquitetura e Construção (LAPAC) da FEC ¿ Unicamp e no Centro de Pesquisas Renato Archer (CenPRA). Além disso, foram testadas diferentes técnicas e materiais, inclusive materiais alternativos, com o objetivo de viabilização econômica. Os resultados comprovaram que o processo de produção digital de maquetes arquitetônicas é viável em termos de procedimentos, de custo, de materiais disponíveis no mercado, qualidade das maquetes produzidas e rapidez na execução. A partir das conclusões obtidas nos experimentos realizados foi elaborado um caderno de recomendações para a confecção de maquetes que será utilizado pelos usuários do LAPAC e que servirá como importante ferramenta de auxílio para os iniciantes na produção digital de maquetes arquitetônicas. Espera-se que os resultados desta pesquisa possam auxiliar a estabelecer diretrizes para a incorporação dessas técnicas e equipamentos em disciplinas de projeto e na prática de arquitetura
Abstract: The present work is an exploratory study about the digital fabrication of architectural models. It started with a literature review, with the aim of getting in contact with the new digital methods for making models and prototypes, from modeling software to rapid prototyping equipment, processes, materials and applications. Still in this initial study the work of two well-known architects, Frank Gehry and Norman Foster, who use rapid prototyping techniques in their design process, was analyzed. From this part of the research it was possible to conclude that the different approaches that architects have to the design process is reflected in the way they use digital techniques for making their models. The second part of the research consisted of a series of experiments with the objective of illustrating the digital production of architectural models. For these experiments, Frank Gehry's Guggenheim Museum in Bilbao was chosen as a fixed variable for the production of models, due to its geometric complexity, which allowed to push the use of the available rapid prototyping equipment to their limits. Only the equipment available at FEC-UNICAMP's (Laboratório de Prototipagem para Arquitetura e Construção - LAPAC) and CENPRA's (Laboratório de Prototipagem Rápida do Centro de Pesquisas Renato Archer) laboratories were used. They consisted of a 3d printer, a fusion deposition modeller (FDM) machine, and a laser cutter. Different techniques and materials were tested in these machines, with the objective of evaluating the quality and economic viability of the resulting models. The results showed that the digital production of architectural models is viable for use in Brazilian architecture schools, in terms of procedures, cost, availability of materials, time spent and quality of the models. Finally, a manual with recommendations and tips was produced, with the aim of helping students build their own models using rapid prototyping equipment. We hope that the results of this research will help guiding the incorporation of these techniques in architecture education and practice in Brazil
Mestrado
Arquitetura e Construção
Mestre em Engenharia Civil
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Livres sur le sujet "Modulo geometrico"

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T, Ivancevic Tijana, dir. Handbook of geometrical methods for scientists and engineers. Hauppauge, NY : Nova Science Publishers, 2009.

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Sibley, Thomas Q. The geometric viewpoint : A survey of geometries. Reading, Mass : Addison-Wesley, 1998.

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Klain, Daniel A. Introduction to geometric probability. Cambridge, UK : Cambridge University Press, 1997.

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1934-, Fogarty John, et Kirwan Frances Clare 1959-, dir. Geometric invariant theory. 3e éd. Berlin : Springer-Verlag, 1994.

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Geometric transformations. New York : Industrial Press, 1995.

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Silva, Ana Cannas da. Geometric models for noncommutative algebras. Providence, R.I : American Mathematical Society, 1999.

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Leila, Schneps, et Lochak P, dir. Geometric Galois actions. Cambridge : Cambridge University Press, 1997.

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Mathematik, Max-Planck-Institut für, dir. Deformation spaces : Perspectives on algebro-geometric moduli. Wiesbaden : Vieweg+Teubner, 2010.

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Geometric modeling. 2e éd. New York : Wiley, 1997.

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Geometric modeling. New York : Wiley, 1985.

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Chapitres de livres sur le sujet "Modulo geometrico"

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McGregor, Anthony. « Geometric Module ». Dans Encyclopedia of Animal Cognition and Behavior, 1–4. Cham : Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-47829-6_895-1.

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McGregor, Anthony. « Geometric Module ». Dans Encyclopedia of Animal Cognition and Behavior, 2936–40. Cham : Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-319-55065-7_895.

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Welling, Ilari, Markku Tahkokorpi, Frank Fleuren et Marc Drieskens. « Geometric models ». Dans Broadband Access Networks, 63–73. Boston, MA : Springer US, 1998. http://dx.doi.org/10.1007/978-1-4615-5795-1_6.

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Chekhov, L. « Discretized Moduli Spaces and Matrix Models ». Dans Algebraic and Geometric Methods in Mathematical Physics, 187–206. Dordrecht : Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-017-0693-3_9.

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Banchs, Rafael E. « Geometrical Models ». Dans Text Mining with MATLAB®, 175–203. New York, NY : Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4614-4151-9_8.

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Banchs, Rafael E. « Geometrical Models ». Dans Text Mining with MATLAB®, 211–39. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-87695-1_9.

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Shoikhet, David, et Mark Elin. « Geometric Background ». Dans Linearization Models for Complex Dynamical Systems, 1–15. Basel : Birkhäuser Basel, 2010. http://dx.doi.org/10.1007/978-3-0346-0509-0_1.

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Han, Jiyuan, et Jeff A. Viaclovsky. « Local Moduli of Scalar-flat Kähler ALE Surfaces ». Dans Geometric Analysis, 113–35. Cham : Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-34953-0_7.

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Juan, Juan A. « Geometric Object Models ». Dans Computer Vision : Theory and Industrial Applications, 267–92. Berlin, Heidelberg : Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-48675-3_7.

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Bai, Y., X. Han et J. L. Prince. « Geometric Deformable Models ». Dans Handbook of Biomedical Imaging, 83–104. Boston, MA : Springer US, 2015. http://dx.doi.org/10.1007/978-0-387-09749-7_5.

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Actes de conférences sur le sujet "Modulo geometrico"

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Fei, Yanqiong, et Xin Zhang. « Self-Repairing Process in Self-Reconfigurable Robots Based on Geometrical Characteristics ». Dans ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/detc2011-47198.

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Self-reconfigurable modular robot consists of many identical modules. By changing the connections among modules, the structure of the robot can flexibly change into many other structures. First, the module is designed which can finish the self-repairing action and its disconnection/connection mechanism is analyzed. Second, a distributed self-repairing process based on the geometrical characters of the modular robot is presented. The method of the Breadth-First-Search and the Depth-First-Search is applied to look for a locomotion path by which a faulty module is ejected and replaced by a spare module. The method can be used to show the self-repairing task of most lattice-type modular robots. It’s effective to solve large numbers of computing problems when the faulty module is inside a large-scale system. At last, a simulation of (2 × 4 + 1)3 modules shows the feasibility and effectiveness of the self-repairing method in the self-reconfigurable robot.
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Hussain, Muhammad. « A Comparison of Efficient Decimation Algorithms for Polygonal Models ». Dans Geometric Modeling and Imaging (GMAI '07). IEEE, 2007. http://dx.doi.org/10.1109/gmai.2007.2.

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Kleine, Felipe Augusto de Souza, Danyllo de Lima Guedes, Felipe Santos de Castro, Daniel Carvalho et João Lucas Dozzi Dantas. « Maneuverability Towing Tank Experiments With Manifold Models : Part I — Static Tests ». Dans ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/omae2018-77036.

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This work is the Part I of a two-part work, where the maneuverability of three manifold geometries was investigated by Towing Tank tests at the Institute for Technological Research, in order to verify the influence of geometrical simplifications and modifications. In this work is presented a comparison between the forces and moments measured in static drift tests, considering a pitch orientation ranging from 0 to 360 degrees, and the static hydrodynamic derivatives in a reference orientation. In the Part II, the investigations were complemented by the results of dynamic tests. The manifold models were constructed in a 1:13 scale. The first model was a geometrically simplified version of the prototype, composed of two simple blocks; the second one was constructed with almost all the prototype geometric details; the last one used the second model with a plate installed on its top. The tests results indicate that the geometrical simplification of manifold models did not have a significant influence on the maneuvering coefficients, in contrast to the addition of the top plate, which significantly changed the maneuvering capabilities of the model. The study presented in both papers will be used to form a data base for numerical simulation studies for manifolds installation.
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Bytsenko, A. A., Piotr Kielanowski, Victor Buchstaber, Anatol Odzijewicz, Martin Schlichenmaier et Theodore Voronov. « Deformations of Geometric Structures in Topological Sigma Models ». Dans XXIX WORKSHOP ON GEOMETRIC METHODS IN PHYSICS. AIP, 2010. http://dx.doi.org/10.1063/1.3527424.

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Miller, Perry L., et James H. Oliver. « Extensible Architecture for Geometric-Model Database Translation ». Dans ASME 2003 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/detc2003/cie-48235.

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This paper introduces an extensible software architecture for geometric model translation based on the concept of “interface” querying. Translation occurs by instantiating a “source” and a “target” module which are able to determine each other’s capabilities by querying for necessary interfaces. Data transfer is initiated between these uncoupled modules using a neutral protocol that they agree upon. This dynamic interoperation continues until the transfer of information is complete. Since it does not require conformance to any specific set of geometric functionality, the architecture accommodates evolving geometric formats. Communication between decoupled modules exclusively through software interfaces facilitates the intended extensibility. In support of ongoing virtual prototyping research at the Virtual Reality Applications Center (VRAC), an example implementation of the architecture in software is presented for conversion of 3D models from a proprietary large model visualization format, EDS/PLM DirectModel, into several alternative formats.
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Nesterenko, M., J. Patera, Piotr Kielanowski, S. Twareque Ali, Anatol Odzijewicz, Martin Schlichenmaier et Theodore Voronov. « Quasicrystal Models in Cryptography ». Dans XXVIII WORKSHOP ON GEOMETRICAL METHODS IN PHYSICS. AIP, 2009. http://dx.doi.org/10.1063/1.3275587.

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Varady, T., et P. Benko. « Reverse engineering B-rep models from multiple point clouds ». Dans Proceedings Geometric Modeling and Processing 2000. Theory and Applications. IEEE, 2000. http://dx.doi.org/10.1109/gmap.2000.838234.

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« GEOMETRICAL CONSTRAINTS FOR LIGAND POSITIONING ». Dans International Conference on Bioinformatics Models, Methods and Algorithms. SciTePress - Science and and Technology Publications, 2011. http://dx.doi.org/10.5220/0003166002040209.

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Tang, Min, Dinesh Manocha et Ruofeng Tong. « Multi-core collision detection between deformable models ». Dans 2009 SIAM/ACM Joint Conference on Geometric and Physical Modeling. New York, New York, USA : ACM Press, 2009. http://dx.doi.org/10.1145/1629255.1629303.

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Wu, Wen-bin, Kan Wang et Qing Li. « Matrix Method of Characteristics Based on Modular Ray Tracing ». Dans 2013 21st International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/icone21-15278.

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The Matrix Method of Characteristics (MOC) is an alternative to traditional MOC, in which repeatedly characteristics sweeping is needed. In the Matrix MOC, a linear algebraic equation system, which is represented by coefficient-matrix, can be formed by sweeping only once, and then solving the linear system takes the place of repeatedly characteristics sweeping. There are many linear solvers to be use, like direct LU decomposition and widely used Krylov subspace iterative methods. In the past, 2D Matrix MOC was implemented based on the long characteristics in which tremendous memory is consumed to hold the geometrical information. Then, 2D Matrix MOC based on modular ray tracing was implemented to overcome the difficulty. Modular ray tracing just holds the geometrical information of typical modules like cells or assemblies, consequently needs less memory. In this study, Filippone-type modular ray tracing in which different azimuths own the same number of characteristics lines was used, and AutoCAD VBA programing produced the geometrical information. Also, the Matrix MOC based on modular ray tracing was implemented to solve half, fourth and eighth reactor core in which additional modules, e.g. half-module, fourth-module and eighth-module were involved and need special considerations. Numerical results demonstrate that Matrix MOC based on modular ray tracing can obtain good efficiency and accuracy.
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Rapports d'organisations sur le sujet "Modulo geometrico"

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Watterberg, P. A. Geometric simplification of analysis models. Office of Scientific and Technical Information (OSTI), décembre 1999. http://dx.doi.org/10.2172/750027.

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Smida, Abdallah, et Ameh Hamici. A Geometric Model For Extended Particles. GIQ, 2012. http://dx.doi.org/10.7546/giq-8-2007-302-311.

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Toda, Magdalena, et Bhagya Athukorallage. Geometric Models for Secondary Structures in Proteins. GIQ, 2015. http://dx.doi.org/10.7546/giq-16-2015-282-300.

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Turk, Greg, F. S. Nooruddin, James F. O'Brien et Gary Yngve. Volumetric Representation and Manipulation of Geometric Models. Fort Belvoir, VA : Defense Technical Information Center, janvier 2001. http://dx.doi.org/10.21236/ada389494.

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Sarti, Alessandro, Ravi Malladi et J. A. Sethian. Subjective surfaces : a geometric model for boundary completion. Office of Scientific and Technical Information (OSTI), juin 2000. http://dx.doi.org/10.2172/764400.

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GENERAL ELECTRIC CO SCHENECTADY NY. Representation and Recognition with Invariants and Geometric Constraint Models. Fort Belvoir, VA : Defense Technical Information Center, novembre 1992. http://dx.doi.org/10.21236/ada263235.

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Langberg, N. A., et D. S. Stoffer. Moving Average Models with Bivariate Exponential and Geometric Distributions. Fort Belvoir, VA : Defense Technical Information Center, mars 1985. http://dx.doi.org/10.21236/ada160178.

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Langberg, Naftali A., et David S. Stoffer. Moving Average Models with Bivariate Exponential and Geometric Distributions. Fort Belvoir, VA : Defense Technical Information Center, mars 1985. http://dx.doi.org/10.21236/ada169953.

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ZEHNER, Björn. Constructing Geometric Models of the Subsurface for Finite Element Simulation. Cogeo@oeaw-giscience, septembre 2011. http://dx.doi.org/10.5242/iamg.2011.0069.

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Block, H. W., N. A. Langberg et D. S. Stoffer. Bivariate Exponential and Geometric Autoregressive and Autoregressive Moving Average Models. Fort Belvoir, VA : Defense Technical Information Center, mars 1986. http://dx.doi.org/10.21236/ada185591.

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