Dissertations / Theses on the topic 'Planar cluster'
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Basu, Deepan. "Generalizations and Interpretations of Incipient Infinite Cluster measure on Planar Lattices and Slabs." Doctoral thesis, Universitätsbibliothek Leipzig, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-223724.
Full textBasu, Deepan [Verfasser], Artem [Akademischer Betreuer] Sapozhnikov, Artem [Gutachter] Sapozhnikov, and Markus [Gutachter] Heydenreich. "Generalizations and Interpretations of Incipient Infinite Cluster measure on Planar Lattices and Slabs / Deepan Basu ; Gutachter: Artem Sapozhnikov, Markus Heydenreich ; Betreuer: Artem Sapozhnikov." Leipzig : Universitätsbibliothek Leipzig, 2017. http://d-nb.info/1240847130/34.
Full textPenna-Lima, M., J. G. Bartlett, E. Rozo, J. B. Melin, J. Merten, A. E. Evrard, M. Postman, and E. Rykoff. "Calibrating the Planck cluster mass scale with CLASH." EDP SCIENCES S A, 2017. http://hdl.handle.net/10150/625830.
Full textAde, P. A. R., N. Aghanim, M. Arnaud, M. Ashdown, J. Aumont, C. Baccigalupi, A. J. Banday, et al. "Planck 2015 results." EDP SCIENCES S A, 2016. http://hdl.handle.net/10150/622773.
Full textTassion, Vincent. "Planarité et Localité en Percolation." Phd thesis, Ecole normale supérieure de lyon - ENS LYON, 2014. http://tel.archives-ouvertes.fr/tel-01061007.
Full textErler, Jens [Verfasser]. "Spectro-spatial observations of galaxy clusters with Planck and CCAT-prime / Jens Erler." Bonn : Universitäts- und Landesbibliothek Bonn, 2020. http://d-nb.info/1218475005/34.
Full textYahiaoui, Ala-Eddine. "Selective vehicle routing problem : cluster and synchronization constraints." Thesis, Compiègne, 2018. http://www.theses.fr/2018COMP2449/document.
Full textThe Vehicle Routing Problem (VRP) is a family of Combinatorial Optimization Problems generally used to solve different issues related to transportation systems and logistics. In this thesis, we focused our attention on a variant of the VRP called the Team Orienteering Problem (TOP). In this family of problems, it is a priory impossible to visit all the customers due to travel time limitation on vehicles. Instead, a profit is associated with each customer to represent its value and it is collected once the customer is visited by one of the available vehicles. The objective function is then to maximize the total collected profit with respect to the maximum travel time. Firstly, we introduced a new generalization for the TOP that we called the Clustered TOP (CluTOP). In this variant, the customers are grouped into subsets called clusters to which we associate profits. To solve this variant, we proposed an exact scheme based on the cutting plane approach with additional valid inequalities and pre-processing techniques. We also designed a heuristic method based on the order first-cluster second approach for the CluTOP. This Hybrid Heuristic combines between an ANLS heuristic that explores the solutions space and a splitting procedure that explores the giant tours search space. In addition, the splitting procedure is enhanced by local search procedure in order to enhance its coverage of search space. The second problem treated in this work is called the Synchronized Team Orienteering Problem with Time Windows (STOPTW). This variant was initially proposed in order to model scenarios related to asset protection during escaped wildfires. It considers the case of a heterogeneous fleet of vehicles along with time windows and synchronized visits. To solve this problem, we proposed a heuristic method based on the GRASP×ILS approach that led to a very outstanding results compared to the literature. The last variant of the TOP tackled in this thesis called the Set Orienteering Problem (SOP). Customers in this variant are grouped into subsets called clusters. Each cluster is associated with a profit which is gained if at least one customer is served by the single available vehicle. We proposed a Branch-and-Cut with two separation procedures to separate subtours elimination constraints. We also proposed a Memetic Algorithm with an optimal splitting procedure based on dynamic programming
Estay, Huidobro Rodrigo Andrés. "Seismic parameters of space - time clustered mining - induced aftershock sequences applied to seismic hazard in mining." Tesis, Universidad de Chile, 2018. http://repositorio.uchile.cl/handle/2250/168513.
Full textUna característica común en la minería que se realiza en roca competetente es la sismicidad inducida. Esta es resultado de los cambios en los esfuerzos y el fallamiento de la roca alrededor de las excavaciones mineras. Posterior a un evento sísmico, existe un aumento en los niveles de sismicidad que gradualmente decaen con el tiempo, conocido como una secuencia de réplicas. Restringir el acceso a las áreas de la mina por el tiempo suficiente que permita que ocurra este decaimiento de los eventos sísmicos es el enfoque principal de los protocolos de re entrada. Las propiedades estadísticas de las secuencias de réplicas pueden ser estudiadas mediante tres relaciones o leyes sísmicas: (1) Ley de Gutenberg Richter, (2) Ley de Omori Modificada (MOL) para el decaimiento temporal de la sismicidad, y (3) Ley de Båth para la magnitud de la réplica de mayor magnitud. Esta tesis contiene tres partes principales: estimación y correlaciones de los parámetros de las leyes sísmicas para secuencias de réplicas inducidas por la minería, desarrollo de protocolos de re entrada en el espacio tiempo magnitud y el reconocimiento y comportamiento temporal de secuencias de réplicas usando un aglomeramiento espacio tiempo. En la primera parte, se aplicaron las tres leyes sísmicas, además del modelo estocástico de Reasenberg Jones, para estudiar los parámetros de 11 secuencias sísmicas inducidas por la minería en cuatro minas en Ontario, Canadá. Para proporcionar directrices para el desarrollo del protocolo de re entrada, se estudió y aplicó la dependencia de esto parámetros con la magnitud del evento sísmico principal de la secuencia sísmica. Los resultados obtenidos son coincidentes con los que diferentes autores han estimado en sismicidad tectónica. Sin embargo, aparecen algunas "diferencias de escala", especialmente con el valor b de Gutenberg Richter y el valor p de la ley modificada de Omori, encontrando que, en promedio, hay diferencias de +0.35 y -0.2 respectivamente entre los resultados de la sismicidad inducida y tectónica. La segunda parte corresponde al desarrollo de un protocolo estocástico de re entrada en el espacio tiempo magnitud, utilizando las relaciones entre los parámetros sísmicos inducidos y la magnitud del evento principal. Se define un radio de exclusión y una relación entre el tiempo de máxima curvatura y la magnitud del evento principal. Esto permite construir curvas de decaimiento sísmico, proporcionando información sobre los patrones de decaimiento de una secuencia en curso. Finalmente, se propone un rango de probabilidad de ocurrencia de la réplica de mayor magnitud, basado en el modelo de probabilidad de Reasenberg Jones. La última parte consiste en analizar el comportamiento del agrupamiento de la sismicidad inducida por la minería a través del tiempo y el espacio. Usando el criterio estadístico de Akaike para seleccionar los parámetros del aglomeramiento espacio tiempo, fue posible identificar una secuencia de réplicas asociada a un evento principal con magnitud Mw = 0.7. Además, se encontró que la distancia espacio tiempo aparentemente disminuye su valor antes de que ocurra un evento principal, para luego retornar a su valor normal. Todos los hallazgos anteriores proporcionan una aproximación a pautas concisas y bien justificadas para el desarrollo del protocolo de re entrada.
Verdier, Loïc. "Détection de structures par combinaison des données Planck et BOSS et détection simultanée d’amas de galaxies dans les données Planck et ROSAT." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLS192/document.
Full textOriginating from the gravitational collapse of the primordial fluctuations of matter, galaxy clusters are the mixture of a dark matter halo, a baryonic plasma also called « hot gas » and several galaxies. Cluster counts provide stringent constraints on cosmology.Improving the detection of the hot gas component in nearby or distant structures is the main goal of my work. We can detect this hot gas in the Planck satellite maps thanks to the Sunyaev-Zel'dovich effect and in the ROSAT satellite maps by bremsstrahlung.The first part of my thesis is dedicated to the detection of hot gas in Planck maps at the positions of BOSS quasars, so in distant structures.Dust-like emission dominates our signal. I developped a new filter in order to separate the possible sub-dominant hot gas emision from the dust one. I get a significnt hot gas signal for structures with redshift z >2.5.In the second part of the thesis, the simultaneous detection, I build a filter suited for extracting clusters (z<1.5) individually in the ROSAT data respecting the noise statitistics. This filter is also designed to be combined with the filter used for detecting clusters in Planck maps. Increasing the number of less massive clusters will be the final goal
Cortes, João Paulo Soares de. "Controle estrutural e classificação do canal no baixo Tapajós : contribuições para a geomorfologia da Amazônia /." Rio Claro, 2020. http://hdl.handle.net/11449/192952.
Full textResumo: A formação das rias fluviais na Amazônia possui uma relação bem conhecida com o processo de avanço do nível do mar durante o Holoceno. Sugestões sobre a presença de controle estrutural e tectônico na gênese destas e de outros elementos do relevo amazônico tem sido levantadas por diversos autores, porém poucos elementos conclusivos foram apresentados até o momento. Este trabalho apresenta, no primeiro momento, uma série de evidências de diferentes fontes mostrando controle estrutural ao longo do ria do Tapajós e em áreas de terra firme adjacentes. A metodologia utilizada, é inovadora por integrar dados geomorfológicos, geológicos e geofísicos (sísmica, magnetometria e gravimetria) obtidos sem custo e disponíveis para grandes áreas, o que é uma grande vantagem em uma zona de difícil acesso como a Amazônia. Trata-se ainda de uma abordagem pouco usual dentro da geomorfologia na qual encontramos resultados muito promissores. Os resultados mostram a influência de elementos estruturais na configuração do relevo amazônico na região do baixo Tapajós. É proposto um modelo de horsts e grábens limitados por lineamentos com direção ENE-WSW com expressão regional. Em seguida apresentamos uma classificação para o canal do Tapajós baseado em variáveis morfométricas extraídas de perfil transversal. A classificação apresenta três trechos distintos para o canal do Tapajós no perímetro analisado, denominados Trecho do Canal Estreito, Baixo Trecho da Ria e Alto Trecho da Ria. Estes trechos possue... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: The formation of the fluvial rias in the Amazon has a well-known relationship with the process of sea level transgression during the Holocene. Suggestions about the presence of structural and tectonic control in the genesis of these and other elements of the Amazonian relief have been raised by several authors, but few conclusive elements have been presented so far. This work presents, in the first moment, a series of evidences from different sources showing structural control along the Tapajós Ria and in adjacent land areas. The methodology used is innovative because it integrates geomorphological, geological and geophysical data (seismic, magnetometry and gravimetry) obtained at no cost and available for large areas, which is a great advantage in an area of difficult access such as the Amazon. It is also an unusual approach within geomorphology in which we find very promising results. The results show the influence of structural elements in the configuration of the Amazonian relief in the region of the lower Tapajós. A model of horsts and grabens limited by lineaments with regional expression is proposed. Next, we present a classification for the Tapajós channel based on morphometric variables extracted from transversal profiles. The classification presents three distinct sections for the Tapajós channel in the analyzed perimeter, here called Narrower Channel Reach, Lower Ria Reach and Higher Ria Reach. These reaches have statistical support and agreement with most of the s... (Complete abstract click electronic access below)
Doutor
Hurier, Guillaume. "Etude des amas de galaxies avec l'expérience PLANCK, via l'effet Sunyaev-Zel'dovich." Phd thesis, Université de Grenoble, 2012. http://tel.archives-ouvertes.fr/tel-00849126.
Full textMartinache, Clément. "Le printemps cosmique des grandes structures : Spitzer et la recherche de structures à z ~ 2 à haut taux de formation stellaire dans le sillage de Planck et Herschel." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLS300/document.
Full textGalaxies are beacons in the Universe that allow us to understand the evolution of the distribution matter in all its forms. The study of galaxies at different epochs helps to understand how they organize at large scales (greater than inter-galaxies distance) but also how they formed, and formed their stars.At our cosmic epoch, galaxies that reside in the densest environments (clusters, groups) have very different properties compared to galaxies residing in less dense environments. This bimodality between 1) elliptical galaxies, massive, old and forming little stars in dense environments on the one hand, and 2) of spiral galaxies, younger and experimenting intense star formation in less dense environments indicates different evolutionary mechanisms and formation mechanisms.The study of galaxies in clusters reveals that they probably experimented intense star formation at redshifts z ~ 2, and points to a synchronous episode of star formation in the galaxies in the cluster, and of colossal proportions (~ 500 solar masses per year, to be compared with the average rate of star formation observed in the local Universe in the order of ~ 1-10 solar masses per year). But this phase still lack a direct observational conclusion, although recent observations in this direction.One possible way to search for these objects is to try to detect their emission in the far infrared, which traces directly star formation. This is what has been achieved with the Planck satellite. From Planck / HFI data, a team in collaboration with us extracted 2151 cluster candidates experimenting an intense star formation phase. A follow-up of 228 candidates was made with the space telescope Herschel / SPIRE, and revealed overdensities of red sources, compatible with a redshift distribution peaking around z ~ 2, and star formation rates of approximately 700 masses solar year.To better constrain the redshift of these candidates, study their contents in terms of stars, another follow-up on 80 candidates was conducted using the IRAC instrument on the Spitzer Space Telescope. My work focuses on the analysis and interpretation of such data.The wavelengths of the IRAC instrument (3.6 and 4.5 microns) are indeed tailored to detect a characteristic peak emission of stellar populations, to estimate the redshift and the stellar mass.My work revealed overdensities of red IRAC sources (z> 1.3) at the positions of the red SPIRE sources (z ~ 2 ~ 700Msol.an SFR), compatible with clusters or proto-clusters in an intense star formation phase. Estimates of photometric redshifts and stellar mass show that these objects are compatible with the progenitors of local clusters.These candidates, however, require confirmation, especially with obtaining spectroscopic redshifts. This work has already begun, and two candidates have already been confirmed at redshifts of 2.15 and 2.36 using the 30m / IRAM. Data obtained with the ALMA interferometer and NOEMA revealed that the SPIRE emission originates in some cases from several galaxies.These initial results are encouraging, but a study at other wavelengths (near infrared) is also needed to better constrain the content of our mass objects, and their star formation history. The data is already available on part of the smple, and analysis has begun
Liu, Jiayi. "Constraining the cosmic microwave background temperature evolution and the population and structure of galaxy clusters and groups from the South Pole Telescope and the Planck Surveyor." Diss., Ludwig-Maximilians-Universität München, 2014. http://nbn-resolving.de/urn:nbn:de:bvb:19-172552.
Full textAdam, Rémi. "Observation des amas de galaxies par effet Sunyaev-Zel'dovich et de la polarisation du fond diffus cosmologique : de Planck à NIKA." Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GREAY056/document.
Full textThe measurement of the matter distribution in the Universe provides valuable tests for cosmology. It can be traced at various steps of the formation of structures using the analysis of the primary and secondary anisotropies in the Cosmic Microwave Background (CMB). This thesis focuses on the data analysis of the observations of the Planck satellite and that of the ground-based camera NIKA installed at the IRAM-30m telescope.The first part introduces the context, focussing on: 1) the inflation, which provides a natural origin for the matter fluctuations seen in the Universe; 2) the reionization, which corresponds to the moment when the first stars form; 3) clusters of galaxy, that are the building blocks of the more recent Universe.The second part focuses on the data reduction of the NIKA data. The development of the data reduction pipeline, allowing to go from raw data to maps, is presented. It is dedicated for the newly developed kinetic inductance detectors used by NIKA. Tools and simulations are also constructed to characterize the maps.The third part is dedicated to the observation and the analysis of galaxy clusters through the Sunyaev-Zel'dovich (SZ) effect, i.e. the inverse Compton interaction of CMB photons and free electrons in clusters. Once recovered, the SZ maps are combined to X-ray data to measure the matter content and thermodynamic properties of the observed clusters. The main results are: the first observation of the SZ effect with kinetic inductance detectors, the measurement of the pressure profile of a high redshift cluster ($z=0.89$), the study of point source contamination in a resolved cluster, and the SZ mapping in a triple merger.The last part is dedicated to the analysis of Planck polarization data. In particular, we discuss large angular scale systematics and the tools developed to identify and correct for them. The large scales CMB polarization data allows both to search for the imprint of the quantum fluctuations generated during inflation, and to measure the reionization
Zucchini, Sara. "Materia oscura: modelli teorici ed evidenze sperimentali." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/12036/.
Full textDardel, Sébastien. "Etudes de cristaux liquides colonnaires en solution organique et en film mince ouvert." Phd thesis, Université Sciences et Technologies - Bordeaux I, 2006. http://tel.archives-ouvertes.fr/tel-00808262.
Full textHannan, Mohammad Abdul. "Sparse Processing Methodologies Based on Compressive Sensing for Directions of Arrival Estimation." Doctoral thesis, Università degli studi di Trento, 2020. http://hdl.handle.net/11572/278178.
Full textTAMAGNINI, ANDREA. "Planar Clusters." Doctoral thesis, 2016. http://hdl.handle.net/2158/1029430.
Full textBasu, Deepan. "Generalizations and Interpretations of Incipient Infinite Cluster measure on Planar Lattices and Slabs." Doctoral thesis, 2016. https://ul.qucosa.de/id/qucosa%3A15590.
Full textElinburg, Jessica Kelly. "Synthesis, characterization, and reactivity of Sn and V=O perfluoropinacolate complexes and magnetic properties of a {Mn6} cluster supported by perfluorpinacolate." Thesis, 2020. https://hdl.handle.net/2144/41984.
Full textDrukier, Gordon A. "Fokker-Planck models and globular cluster evolution." Thesis, 1993. http://hdl.handle.net/2429/1658.
Full textQuinn, Samuel N. "Exoplanets in Open Clusters and Binaries: New Constraints on Planetary Migration." 2016. http://scholarworks.gsu.edu/phy_astr_diss/84.
Full textWaizmann, Jean-Claude [Verfasser]. "On finding galaxy clusters with Planck and the spherical collapse model in different Dark Energy cosmologies / put forward by Jean-Claude Waizmann." 2010. http://d-nb.info/1009399861/34.
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