Thematische Bibliographien / Curvas de dispersión

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Auswahl der wissenschaftlichen Literatur zum Thema „Curvas de dispersión“

Autor: Grafiati

Veröffentlicht am 26. Juni 2021

Zuletzt aktualisiert am 29. Juli 2025

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Zeitschriftenartikel zum Thema "Curvas de dispersión"

Corchete, V. "Shear-wave Velocity Structure of Greenland from Rayleigh-wave Analysis." Earth Sciences Research Journal 20, no. 1 (2016): 1–11. http://dx.doi.org/10.15446/esrj.v20n1.41079.

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The elastic structure beneath Greenland is shown by means of S-velocity maps for depths ranging from zero to 350 km, determined by the regionalization and inversion of Rayleigh-wave dispersion. The traces of 50 earthquakes, occurring from 1990 to 2011, have been used to obtain Rayleigh-wave dispersion data. These earthquakes were registered by 21 seismic station located in Greenland and the surrounding area. The dispersion curves were obtained for periods between 5 and 200 s, by digital filtering with a combination of MFT (Multiple Filter Technique) and TVF (Time Variable Filtering).

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Graizbord, Boris, and Alejandro Mina Valdés. "Población-territorio : cien años de evolución, 1895-1990." Estudios Demográficos y Urbanos 8, no. 1 (1993): 31. http://dx.doi.org/10.24201/edu.v8i1.862.

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En el trabajo se da una definición de la dimensión espacial implícita en la relación hombre-naturaleza, describiéndose las tendencias que ha seguido la distribución de la población en México desde 1895 hasta 1990, con base en la división político-administrativa. Se estima la dispersión a lo largo del tiempo del comportamiento de las poblaciones estatales con respecto a la distancia de sus capitales al Distrito Federal; generando curvas centenarias que describen las variaciones en el tiempo de la dispersión de la población que explica la descentralización o desplazamiento del centroide poblacio

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Corchete, Víctor. "Shear-wave velocity structure of Australia from Rayleigh-wave analysis." Earth Sciences Research Journal 18, no. 2 (2015): 87–98. http://dx.doi.org/10.15446/esrj.v18n2.41078.

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The elastic structure beneath Australia is shown by means of S-velocity maps for depths ranging from zero to 400 km, determined by the regionalization and inversion of Rayleigh-wave dispersion. The traces of 233 earthquakes, occurred from 1990 to 2010, have been used to obtain Rayleigh-wave dispersion data. These earthquakes were registered by 65 seismic station located in Australia and the surrounding area. The dispersion curves were obtained for periods between 5 and 250 s, by digital filtering with a combination of MFT (Multiple Filter Technique) and TVF (Time Variable Filtering),

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Iglesias, A., V. M. Cruz-Atienza, N. M. Shapiro, S. K. Singh, and J. F. Pacheco. "Crustal structure of south-central Mexico estimated from the inversion of surface-wave dispersion curves using genetic and simulated annealing algorithms." Geofísica Internacional 40, no. 3 (2001): 181–90. http://dx.doi.org/10.22201/igeof.00167169p.2001.40.3.321.

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A partir de catorce sismos de subducción, agrupados en dos trayectorias (una perpendicular y otra paralela a la línea de costa), se calculó un apilado sobre las curvas de dispersión de velocidad de grupo. Estas curvas promedio fueron invertidas usando, por separado, los métodos de algoritmos genéticos y recristalización simulada. Los resultados muestran fuertes diferencias entre ambos modelos corticales, sobre todo, en los parámetros de la capa más somera y en la localización del Moho. Estas diferencias pueden ser explicadas debido a que la primera trayectoria atraviesa el terreno tectonoestra

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De Souza, Jorge Luis. "Crustal structure of the southeastern Brazilian continental margin from surface wave dispersion." Geofísica Internacional 35, no. 3 (1996): 285–300. http://dx.doi.org/10.22201/igeof.00167169p.1996.35.3.463.

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Las curvas de dispersión continentales se obtuvieron de las velocidades de grupo de ondas de Rayleigh para seis sismos con epicentros en el Atlántico Sur. La inversión sugiere una corteza superior sedimentaria, con velicidades de S de 1.32-2.90 km/s, seguida por un basamento cristalino de 3.06-3.38 km/s. La corteza inferior is transicional (4.02-4.22 km/s) como en otros bordes continentales pasivos. La base de la corteza se encuentra a 36Â±4 km pero existen valores menores en los perfiles A a C.

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Granada, J. C. "Polaritones Superficiales Acoplados a Magnetoplasmones en una Super-Red Semi Infinita." Revista de Ciencias 9 (November 8, 2011): 51–60. http://dx.doi.org/10.25100/rc.v9i0.605.

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Se estudian las excitaciones superficiales que surgen en la superficie de división entre un cristal iónico y una super-red semiconductora en un campo magnético transversal. Se predice 1a existencia de un modo con frecuencias más bajas que la frecuencia ciclotrónica del sistema electrónico. Este modo tiene una velocidad de grupo negativa. Se demuestra que la resonancia entre los polaritones superficiales y los magnetoplasmones lleva a un pequeño desdoblamiento de la frecuencia del poloritón superficial. Se discute además el comportamiento de los puntos iniciales de las curvas de dispersión.

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Daín, Alejandro. "Simposio 6: Prevención y tratamiento." Revista de la Sociedad Argentina de Diabetes 56, no. 3Sup (2022): 21. http://dx.doi.org/10.47196/diab.v56i3sup.512.

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 El concepto de variabilidad en la homeostasis hormonal se conoce desde hace tiempo. Tenemos diversos ejemplos en los modelos biológicos de fluctuaciones u oscilaciones de las concentraciones hormonales o de sus efectores finales. La variabilidad glucémica (VG) es un componente de la homeostasis de la glucosa en conjunto con sus reguladores hormonales y no hormonales. La VG es una medida de dispersión relacionada con el desvío estándar. Cuando estas dispersiones u oscilaciones superan las barreras de control homeostáticos, pueden ocasionar alteraciones fisiopatológicas con consecuencias

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Quispe Coaquira, Jesús E., Paúl Castillo Paca, William Yana Viveros, Hugo Vilcanqui Mamani, Edgar Apaza Zúñiga, and Diana M. Quispe Roque. "Atributos textiles de la fibra de alpacas Huacaya blanca y color (Vicugna pacos) de la feria ganadera del sur del Perú." Revista de Investigaciones Veterinarias del Perú 32, no. 4 (2021): e20930. http://dx.doi.org/10.15381/rivep.v32i4.20930.

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Se caracterizaron las fibras de alpacas Huacaya blances (n=143) y de color (n=100) participantes en la LVIII Feria Ganadera del Sur del Perú (FEGASUR). Las fibras fueron procesadas en el Laboratorio de Fibras del Gobierno Regional Puno. Se describen las frecuencias bajo un modelo de efectos fijos (p<0.05). Las distribuciones de frecuencias de los atributos de la fibra difieren de la curva normal, en distinto grado y según sea la variable; a excepción del Factor de Confort (FC), presentan un sesgo de cola hacia la derecha; siendo moderada la asimetría del Diámetro Medio (DM) y ligera asimetr

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Pantoja Castro, M. A., H. González Rodríguez, J. F. Pérez Robles, H. V. Martínez, and F. López Villarreal. "EFECTO DE LA ADICIÓN DE PARTÍCULAS DE CDS EN UNA MATRIZ DE PMMA." Revista Colombiana de Materiales, no. 5 (May 21, 2014): 215–20. http://dx.doi.org/10.17533/udea.rcm.19599.

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Una vía que permite sacar provecho de las propiedades ópticas y eléctricas, entre otras, de nanopartículas de sulfuro de cadmio (CdS), consiste en su incorporación en matrices poliméricas, en donde la dispersión homogénea de estas juega un rol fundamental para generar una sinergia adecuada de propiedades, de tal forma que este nuevo material puede tener aplicación en el campo de los fotodetectores. En este trabajo se reporta una ruta de síntesis para materiales compuestos de PMMA/CdS en acetona, así como su análisis mediante microscopía óptica y de barrido, reflectancia UV-visible, espectrosco

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Ramos, Pedro, María Athenas Ramos, and Diana Silva. "Características clínicas y supervivencia de cáncer de pulmón." Revista Colombiana de Hematología y Oncología 9, Supl (2023): 222–24. http://dx.doi.org/10.51643/22562915.629.

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Objetivos: 1) Describir la supervivencia global de cáncer de pulmón avanzado, 2) Describir la supervivencia libre de progresión de cáncer de pulmón avanzado y, 3) Describir las características clínicas de cáncer de pulmón.Métodos: el diseño del estudio es observacional descriptivo retrospectivo, se hizo el análisis de la información de la Clínica Oncocare en el periodo comprendido entre el 1° de enero de 2007 hasta el 31 julio de 2022. Se realizaron análisis descriptivos usando medidas de tendencia central, ubicación y dispersión para las variables continuas y frecuencias absolutas y relativas

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Dissertationen zum Thema "Curvas de dispersión"

Vázquez, Martínez Santiago. "Nuevas técnicas de ensayos no destructivos basadas en ondas mecánicas para la valoración del daño en materiales cementicios." Doctoral thesis, Universitat Politècnica de València, 2021. http://hdl.handle.net/10251/165531.

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[ES] En la actualidad, una gran cantidad de infraestructuras están compuestas de forma parcial o total de materiales cementicios, siendo el hormigón uno de los materiales cementicios más antiguos y utilizados en la construcción debido a su bajo coste, durabilidad y características mecánicas y estructurales. Pese a sus características, estos materiales están expuestos a diversas condiciones adversas del entorno y sufren procesos de deterioro que afectan a su integridad y seguridad. El reconocimiento de la integridad y seguridad en las estructuras cementicias ha implicado una extensa investigac

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Gandhi, Navneet. "Determination of dispersion curves for acoustoelastic lamb wave propagation." Thesis, Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/37158.

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The effect of stress on Lamb wave propagation is relevant to both nondestructive evaluation and structural health monitoring because of changes in received signals due to both the associated strain and the acoustoelastic effect. A homogeneous plate that is initially isotropic becomes anisotropic under biaxial stress, and dispersion of propagating waves becomes directionally dependent. The problem is similar to Lamb wave propagation in an anisotropic plate, except the fourth order tensor in the resulting wave equation does not have the same symmetry as that for the unstressed anisotropic plate,

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Ullah, Irfan. "Caracterização da subsuperfície rasa através da curva da razão espectral H/V e da inversão conjunta das curvas de dispersão e elipticidade." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/14/14132/tde-04062018-101840/.

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A destruição causada por um terremoto depende de muitos fatores, como características e profundidade da fonte, magnitude, distância epicentral e da configuração geológica da área. A destruição causada devido à configuração geológica da área é denominada como efeito local. A modelagem do efeito local implica na determinação do tempo e nível de vibração e do efeito de amplificação do deslocamento. As propriedades elásticas dos materiais geológicos (velocidade das ondas de compressão e de cisalhamento, densidade, espessura da camada de solo, etc.) podem ser obtidas por diversos métodos geofísicos

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Pei, Donghong. "Modeling and inversion of dispersion curves of surface waves in shallow site investigations." abstract and full text PDF (free order & download UNR users only), 2007. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3275830.

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Latini, Marco. "Mixing in Curved Pipes." Scholarship @ Claremont, 2001. https://scholarship.claremont.edu/hmc_theses/129.

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Over the previous summer I studied mixing of a passive tracer by flow in a straight cylindrical pipe, under the supervision of prof. Bernoff. The mixing process can be thought of as the successive action of advection by the fluid flow and diffusion modeled by random walks. With this method we were able to distinguish three different regimes. For short times, diffusion is more relevant than advection and we observed a Gaussian longitudinal distribution of the concentration. In an intermediate regime, advection by the shear is dominant over longitudinal diffusion and we observed a distinctively

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Asabere, Philip. "COMPARISON OF DISPERSION CURVES ACQUIRED USING MULTICHANNEL ANALYSIS OF SURFACE WAVES WITH VARIOUS STRIKER PLATE CONFIGURATIONS." Master's thesis, Temple University Libraries, 2016. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/368445.

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Civil Engineering M.S.C.E. There is growing appreciation and research regarding geophysical methods to evaluate near surface soil properties in geotechnical engineering. Geophysical methods are generally non-destructive test (NDT) methods that do not necessitate traditional sampling of soils. Instead, they rely on application of input signals and deduction of soil properties from the measured response of the domain. Geophysical methods include various seismic, magnetic and nuclear techniques applied at the surface and/or subsurface within boreholes. Surface seismic methods, which include

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Koreck, Juergen. "Computational characterization of adhesive bond properties using guided waves in bonded plates." Thesis, Available online, Georgia Institute of Technology, 2006, 2006. http://etd.gatech.edu/theses/available/etd-08252006-064856/.

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Thesis (M. S.)--Civil and Environmental Engineering, Georgia Institute of Technology, 2007. Jacobs, Laurence, Committee Chair ; Qu, Jianmin, Committee Member ; Valle, Christine, Committee Co-Chair.

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Amjad, Umar. "Multi-Component Structural Health Assessment Using Guided Acoustic Waves." Diss., The University of Arizona, 2014. http://hdl.handle.net/10150/344230.

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In this dissertation different structural materials (aluminum and steel) with different geometrical shapes (plates, pipes and bars) are studied for damage detection with guided waves. Specific guided wave modes (also known as Lamb wave modes for plate type structures) are generated in a laminated aluminum plate for damage detection and quantification using a broad band piezoelectric transducer structured with a rigid electrode. Appropriate excitation frequencies and modes for inspection are selected from theoretical and experimental dispersion curves. Sensitivity of anti-symmetric and symmetri

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Melo, Emerson Gonçalves de. "Integração monolítica de guias de onda, curvas e junções em Y baseados em cristais fotônicos planares de silício e com baixas velocidades de grupo." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/3/3140/tde-15012018-150947/.

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A fotônica em silício é um campo de pesquisas emergente com grande potencial para contribuir com a resolução de alguns dos problemas tecnológicos da atualidade. O gargalo imposto por interconexões metálicas na expansão da taxa de transmissão de dados em sistemas de comunicação como os de computadores de alto desempenho talvez seja um dos maiores desafios a serem superados. A propagação de luz em baixas velocidades de grupo e com controle de dispersão é uma das linhas de pesquisa atuais nas quais se busca explorar de forma mais eficiente as propriedades ópticas do silício, e assim, aumentar a c

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Tsarsitalidou, Christina. "Inversion of Rayleigh-wave dispersion curves using a finite-element eigenvalue/eigenvector solver, applied to the Alpine region and Italian peninsula." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/18152/.

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Questa tesi si pone come obiettivo lo studio del processo d'inversione nel caso di curve di dispersione delle onde di Rayleigh, con lo scopo di determinare il profilo della velocità delle onde S. Ho utilizzato due diversi metodi. Il primo tipo riguarda un approccio perturbativo basato sul metodo degli elementi -finiti; il secondo, è un metodo di calcolo diretto basato sulla formula di Dix e costituisce un metodo non perturbativo. Quest'ultimo fornisce un modello iniziale che potrà essere in seguito ottimizzato attraverso l'approccio perturbativo. Inizialmente, test basati su dati sinte

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Bücher zum Thema "Curvas de dispersión"

Busarello, G. Atlas of velocity dispersion profiles and rotation curves for elliptical and lenticular galaxies. Liguori Editore, 1989.

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Binette, André. Inflation and relative price dispersion in Canada: An empirical assessment. Bank of Canada, 2005.

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Kress, W. Phonon dispersion curves, one-phonon densities of states and impurity vibrations of metallic systems. Fachinformationszentrum Karlsruhe, 1987.

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Buchteile zum Thema "Curvas de dispersión"

Strauch, D. "BP: phonon dispersion curves, phonon frequencies." In New Data and Updates for IV-IV, III-V, II-VI and I-VII Compounds, their Mixed Crystals and Diluted Magnetic Semiconductors. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-14148-5_137.

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Strauch, D. "BSb: phonon dispersion curves, phonon frequencies." In New Data and Updates for IV-IV, III-V, II-VI and I-VII Compounds, their Mixed Crystals and Diluted Magnetic Semiconductors. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-14148-5_143.

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Strauch, D. "SiC: phonon frequencies, phonon dispersion curves." In New Data and Updates for IV-IV, III-V, II-VI and I-VII Compounds, their Mixed Crystals and Diluted Magnetic Semiconductors. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-14148-5_165.

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Meyer, B. K. "ZnO: phonon dispersion curves, phonon wavenumbers." In New Data and Updates for IV-IV, III-V, II-VI and I-VII Compounds, their Mixed Crystals and Diluted Magnetic Semiconductors. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-14148-5_327.

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Strauch, D. "BAs: phonon dispersion curves, phonon frequencies." In New Data and Updates for IV-IV, III-V, II-VI and I-VII Compounds, their Mixed Crystals and Diluted Magnetic Semiconductors. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-14148-5_86.

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Rössler, U. "ZnSe: phonon dispersion curves, phonon spectra." In New Data and Updates for several Semiconductors with Chalcopyrite Structure, for several II-VI Compounds and diluted magnetic IV-VI Compounds. Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-28531-8_101.

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Rössler, U. "ZnTe: phonon dispersion curves, phonon spectra." In New Data and Updates for several Semiconductors with Chalcopyrite Structure, for several II-VI Compounds and diluted magnetic IV-VI Compounds. Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-28531-8_111.

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Rössler, U. "ZnS: phonon dispersion curves, phonon spectra." In New Data and Updates for several Semiconductors with Chalcopyrite Structure, for several II-VI Compounds and diluted magnetic IV-VI Compounds. Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-28531-8_91.

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Strauch, D. "HgS: phonon dispersion curves, phonon spectra." In Landolt-Börnstein - Group III Condensed Matter. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-23415-6_119.

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Strauch, D. "HgSe: phonon dispersion curves, phonon spectra." In Landolt-Börnstein - Group III Condensed Matter. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-23415-6_127.

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Konferenzberichte zum Thema "Curvas de dispersión"

Hesami, Leila, Md G. R. Chowdhury, and M. A. Noginov. "Anomalous Dispersion in Coupled Surface Plasmons and Excitons." In CLEO: Applications and Technology. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/cleo_at.2024.jth2a.129.

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We studied dispersion in Rhodamine laser dyes (in the Kretschmann geometry) and found multi-branch “staircase” dispersion curves, emergence of the new dispersion “fork” branch, and effect of the energy transfer on the strong coupling.

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Yang, Han, Siqi Zhang, Haichao Liu, Xiaobin Jiang, Zhoumo Zeng, and Yang Liu. "Fast Prediction for Dispersion Curves in Pipes Based on Neural Network." In 2024 IEEE Ultrasonics, Ferroelectrics, and Frequency Control Joint Symposium (UFFC-JS). IEEE, 2024. https://doi.org/10.1109/uffc-js60046.2024.10793987.

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Lei, Ting, Daniel Al Choboq, Josselin Kherroubi, Lin Liang, and Romain Prioul. "Sonic Data Classification Using Supervised Machine-Learning Approach." In 2022 SPWLA 63rd Annual Symposium. Society of Petrophysicists and Well Log Analysts, 2022. http://dx.doi.org/10.30632/spwla-2022-0105.

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Cross-dipole sonic data have been widely accepted in the industry to characterize shear slowness measurements using borehole flexural modes. The borehole flexural mode is dispersive and sensitive to many factors such as tool structure, borehole shape, drilling fluid and formation properties. These sensitivities further enable us to characterize anisotropy, drilling features, and logging conditions. From wide-frequency-band dispersions, one can evaluate the cross-dipole dispersions to identify zones with intrinsic anisotropy, stress-induced anisotropy, or fracture-induced anisotropy. One can al

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Neducza, B., and L. Hermann. "Automatic Determination of Dispersion Curves." In Near Surface 2005 - 11th European Meeting of Environmental and Engineering Geophysics. European Association of Geoscientists & Engineers, 2005. http://dx.doi.org/10.3997/2214-4609-pdb.13.a032.

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Cho, Younho, Joseph L. Rose, Chong Myoung Lee, and Gregory N. Bogan. "Elastic Guided Waves in Composite Pipes." In ASME/JSME 2004 Pressure Vessels and Piping Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/pvp2004-2813.

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An efficient technique for the calculation of guided wave dispersion curves in composite pipes is presented. The technique uses a forward-calculating variational calculus approach rather than the guess and iterate process required when using the more traditional partial wave superposition technique. The formulation of each method is outlined and compared. The forward-calculating formulation is used to develop finite element software for dispersion curve calculation. Finally, the technique is used to calculate dispersion curves for several structures, including an isotropic bar, two multi-layer

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Luo, Yinhe, Jianghai Xia, Jiangping Liu, Yixian Xu, and Qingsheng Liu. "Research on Dispersion Curves of MASW." In Symposium on the Application of Geophysics to Engineering and Environmental Problems 2007. Environment and Engineering Geophysical Society, 2007. http://dx.doi.org/10.4133/1.2924645.

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Luo, Yinhe, Jianghai Xia, Jiangping Liu, Yixian Xu, and Qingsheng Liu. "Research On Dispersion Curves Of Masw." In 20th EEGS Symposium on the Application of Geophysics to Engineering and Environmental Problems. European Association of Geoscientists & Engineers, 2007. http://dx.doi.org/10.3997/2214-4609-pdb.179.01379-1387.

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MOMENI, HAMED, MOHAMMAD JEDDI, and ARVIN EBRAHIMKHANLOU. "HIGH-DIMENSIONAL DATA ANALYTICS FOR SPARSE RECOVERY OF GUIDED-WAVES DISPERSION CURVES USING B-SPLINES." In Structural Health Monitoring 2023. Destech Publications, Inc., 2023. http://dx.doi.org/10.12783/shm2023/36815.

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This research presents a technique to recover the dispersion curves of guidedwaves by utilizing the inherent sparsity of these signals in the frequency-wavenumber domain. The proposed methodology is a data-driven approach that combines physicsbased knowledge with high-dimensional analysis to obtain the dispersion curves of the medium from experimental signals. Initially, a sparse two-dimensional dispersion matrix is constructed using sparse wavenumber analysis. Then, B-splines are fitted to non-zero elements of this matrix to establish an initial estimate of the dispersion curve parameters. Th

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Nishimura, Junji, and Katsumi Morishita. "Varied Spectral Properties of Annealed Dispersive Fibres." In The European Conference on Lasers and Electro-Optics. Optica Publishing Group, 1996. http://dx.doi.org/10.1364/cleo_europe.1996.cthb7.

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Optical fibres made from core and cladding materials with different dispersions are proposed theoretically to get optical fibre devices that have not yet been achieved by conventional fibres [1]. The fibres are called dispersive fibres due to their large wavelength dependence of the index difference. Dispersive fibres arc fabricated from optical glasses whose refractive-index curves interseet [2]. However, it is difficult to make dispersive fibres with various chromatic characteristics because of limited number of optical glasses. In this paper, it is shown that spectral properties of dispersi

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Plona, Tom, Bikash Sinha, Michael Kane, et al. "Identifying formation response using sonic dispersion curves." In SEG Technical Program Expanded Abstracts 2004. Society of Exploration Geophysicists, 2004. http://dx.doi.org/10.1190/1.1845242.

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Berichte der Organisationen zum Thema "Curvas de dispersión"

Mendez Espinosa, Juan Felipe, and Marco Andres Guevara Luna. Uso del modelo de dispersión de contaminantes Screen View. Universidad Nacional Abierta y a Distancia, 2022. http://dx.doi.org/10.22490/notas.4626.

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La modelación de la dispersión de contaminantes es una herramienta indicativa que aporta en la gestión y planificación del territorio, en la realización de estudios de impacto ambiental y en los planes de manejo ambiental. Información relevante: para simular y/o entender la dispersión de las emisiones de contaminantes atmosféricos provenientes de fuentes fijas se han establecido diferentes modelos atmosféricos: caja, modelo gaussiano, euleriano, lagrangiano, tipo “puff”, receptor y hasta estadísticos. En el caso de los modelos gaussianos se busca describir la dispersión en la horizontal y en l

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Wong, J., D. Clatterbuck, F. Occelli, et al. Phonon dispersion curves determination in (delta)-phase Pu-Ga alloys. Office of Scientific and Technical Information (OSTI), 2006. http://dx.doi.org/10.2172/928180.

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O. C. Bernardo, Felipe, Sebastião V. Canevarolo, and José A. C. G. Covas. Evaluation of temperature impact during extrusion on the mixing levels of PS/PA6 by optical monitoring. Universidad de los Andes, 2024. https://doi.org/10.51573/andes.pps39.gs.ex.2.

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This work uses on-line monitoring of turbidity to ascertain the temperature impact on the mixing performance of kneading blocks with different geometries. For this purpose, one of the barrel segments of the extruder was modified to incorporate four sampling devices and a slit die containing optical windows. The experiments consisted in reaching steady extrusion and then adding a small amount of tracer. Upon opening each sampling device, material was laterally detoured from the local screw channel and its turbidity were measured by the optical detector. Residence time distribution (RTD) curves

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Ostiguy, Jean-Francois. Remarks on the concept of dispersion in a curved linac. Office of Scientific and Technical Information (OSTI), 2009. http://dx.doi.org/10.2172/952027.

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Day, Amber, Sinead Williamson, and Natalie Klein. Utilizing Bayesian Optimization for Efficient Dispersion Curve Feature Acquisition. Office of Scientific and Technical Information (OSTI), 2024. http://dx.doi.org/10.2172/2335729.

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Rose, Luo, and Minachi. ZZ44154 Circumferential Guided Waves for Defect Detection in Tar Coated Pipe. Pipeline Research Council International, Inc. (PRCI), 2008. http://dx.doi.org/10.55274/r0010958.

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The study reports on circumferential guided wave inspection potential and propagation in a tar coated pipe. A computer code based on a matrix technique was developed to calculate the circumferential guided wave dispersion curves and wave structures in a viscoelastic multi-layered pipe. Experiments utilizing the SwRI Magnetostrictive ILI inspection technique were conducted under different coating conditions. There was a favorable agreement with theory. This study provides an insight into attenuation effect, ways to improve propagation distance, and a baseline for further studies on wave scatter

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Fujiki, Hiroshi, and Howard J. Wall. Controlling for Geographic Dispersion When Estimating the Japanese Phillips Curve. Federal Reserve Bank of St. Louis, 2006. http://dx.doi.org/10.20955/wp.2006.057.

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Jury, William A., and David Russo. Characterization of Field-Scale Solute Transport in Spatially Variable Unsaturated Field Soils. United States Department of Agriculture, 1994. http://dx.doi.org/10.32747/1994.7568772.bard.

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This report describes activity conducted in several lines of research associated with field-scale water and solute processes. A major effort was put forth developing a stochastic continuum analysis for an important class of problems involving flow of reactive and non reactive chemicals under steady unsaturated flow. The field-scale velocity covariance tensor has been derived from local soil properties and their variability, producing a large-scale description of the medium that embodies all of the local variability in a statistical sense. Special cases of anisotropic medium properties not alig

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