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680 tulosta hakusanalla "Inversion"

Full Field Inversion Methods in Ocean and Seismo-Acoustics

Full Field Inversion Methods in Ocean and Seismo-Acoustics

Springer
1995
sidottu
Recent advances in the power of inversion methods, the accuracy of acoustic field prediction codes, and the speed of digital computers have made the full field inversion of ocean and seismic parameters on a large scale a practical possibility. These methods exploit amplitude and phase information detected on hydrophone/geophone arrays, thereby extending traditional inversion schemes based on time of flight measurements. Full field inversion methods provide environmental information by minimising the mismatch between measured and predicted acoustic fields through a global search of possible environmental parameters. Full Field Inversion Methods in Ocean and Seismo-Acoustics is the formal record of a conference held in Italy in June 1994, sponsored by NATO SACLANT Undersea Research Centre. It includes papers by NATO specialists and others. Topics covered include: · speed and accuracy of acoustic field prediction codes · signal processing strategies · global inversion algorithms · search spaces of environmental parameters · environmental stochastic limitations · special purpose computer architectures · measurement geometries · source and receiving sensor technologies.
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Experimental Acoustic Inversion Methods for Exploration of the Shallow Water Environment

Experimental Acoustic Inversion Methods for Exploration of the Shallow Water Environment

Springer
2000
sidottu
In recent years, research on acoustic remote sensing of the ocean has evolved considerably, especially in studying complex physical and biological processes in shallow water environments. To review the state of the art, an international workshop was held at Carvoeiro, Portugal, in March 1999, bringing together leading international researchers in the field. In contrast to much of the recent theoretical work, emphasis was placed on the experimental validation of the techniques. This volume, based on presentations at this workshop, summarizes a range of diverse and innovative applications. The invited contributions explore the use of acoustics to measure bottom properties and morphology, as well as to probe buried objects within the sediment. Within the water column, sound is applied to imaging of oceanographic features such as currents and tides or monitoring of marine life. Another key theme is the use of sound to solve geometric inverse problems for precise tracking of undersea vehicles. Audience: This volume should be useful both to the novice seeking an introduction to the field and to advanced researchers interested in the latest developments in acoustic sensing of the ocean environment. The workshop was sponsored by the Fundação para a Ciêcia e a Tecnologia (Portuguese Foundation for Science and Technology).
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The Discourse Function of Inversion in English

The Discourse Function of Inversion in English

Betty Birner

CRC Press Inc
1996
sidottu
First published in 1997. This dissertation presents a discourse-functional account of English inversion, based on an empirical study of natural language data. The central finding is that inversion is subject to a pragmatic constraint on the information status of its constituents; specifically, the information represented by the preposed constituent must be at least as familiar within the discourse as is that represented by the postposed constituent.
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Hegel's Inversion of Philosophy

Hegel's Inversion of Philosophy

W.Clark Wolf

Cambridge University Press
2026
sidottu
Hegel's philosophy is often presented as a reconciliation between thought and the world, and thus logic and metaphysics. But what is the basis of this reconciliation? In this book, Clark Wolf argues that the key to Hegel's transformation of philosophy lies in his recognition of the special logical basis of the humanly made world. Human artifacts and institutions are not merely represented by concepts; concepts are necessary for their very existence. For this reason, Hegel sees the human world, the world of spirit or Geist, as more central in philosophy than the mind-independent world of nature. Hegel's philosophy is thus a humanism. Wolf argues that this humanistic conception of philosophy is justified in Hegel's Science of Logic, since its logical basis is his theory of concepts. Through a detailed interpretation of the Doctrine of the Concept, this book sheds new light on Hegelian idealism.
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Numerical Methods of Matrix Inversion

Numerical Methods of Matrix Inversion

Keith Donald Rush

Hassell Street Press
2021
nidottu
This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface.We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
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Seismic Imaging and Inversion: Volume 1

Seismic Imaging and Inversion: Volume 1

Robert H. Stolt; Arthur B. Weglein

Cambridge University Press
2012
sidottu
Extracting information from seismic data requires knowledge of seismic wave propagation and reflection. The commonly used method involves solving linearly for a reflectivity at every point within the Earth, but this book follows an alternative approach which invokes inverse scattering theory. By developing the theory of seismic imaging from basic principles, the authors relate the different models of seismic propagation, reflection and imaging - thus providing links to reflectivity-based imaging on the one hand and to nonlinear seismic inversion on the other. The comprehensive and physically complete linear imaging foundation developed presents new results at the leading edge of seismic processing for target location and identification. This book serves as a fundamental guide to seismic imaging principles and algorithms and their foundation in inverse scattering theory, and is a valuable resource for working geoscientists, scientific programmers and theoretical physicists.
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Seismic Imaging and Inversion: Volume 2

Seismic Imaging and Inversion: Volume 2

Arthur B. Weglein; Robert H. Stolt

Cambridge University Press
2026
sidottu
This second volume of Seismic Imaging and Inversion supersedes the first with direct nonlinear inverse theory – where all the assumptions and shortcomings of the linear theory are removed. Chapters follow the processing sequence, including predicting the reference and scattered wavefields; de-ghosting; removing multiples; Q compensation; depth imaging; and direct non-linear inversion of target mechanical properties. Every step in the processing chain is achieved directly without knowing, estimating, or determining any subsurface information, including a velocity model. No other seismic concept or methodology has that capability. Taken together, the two volumes provide researchers and industry practitioners with a solid understanding of current mainstream methods as well as a new and more capable methodology that reduces to conventional methods when the prerequisites and assumptions within those are satisfied. This provides new options in the seismic toolbox that facilitate target identification across a broader set of seismic offshore and onshore plays.
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Seismic Imaging and Inversion: Volume 1

Seismic Imaging and Inversion: Volume 1

Robert H. Stolt; Arthur B. Weglein

Cambridge University Press
2018
pokkari
Extracting information from seismic data requires knowledge of seismic wave propagation and reflection. The commonly used method involves solving linearly for a reflectivity at every point within the Earth, but this book follows an alternative approach which invokes inverse scattering theory. By developing the theory of seismic imaging from basic principles, the authors relate the different models of seismic propagation, reflection and imaging - thus providing links to reflectivity-based imaging on the one hand and to nonlinear seismic inversion on the other. The comprehensive and physically complete linear imaging foundation developed presents new results at the leading edge of seismic processing for target location and identification. This book serves as a fundamental guide to seismic imaging principles and algorithms and their foundation in inverse scattering theory, and is a valuable resource for working geoscientists, scientific programmers and theoretical physicists.
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The Discourse Function of Inversion in English

The Discourse Function of Inversion in English

Betty Birner

Routledge
2015
nidottu
First published in 1997. This dissertation presents a discourse-functional account of English inversion, based on an empirical study of natural language data. The central finding is that inversion is subject to a pragmatic constraint on the information status of its constituents; specifically, the information represented by the preposed constituent must be at least as familiar within the discourse as is that represented by the postposed constituent.
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El arte como inversión. Alternativa financiera

El arte como inversión. Alternativa financiera

Miguel Espel Aldámiz-Echevarría

Lulu.com
2014
sidottu
Bilba no, naci en 1944 en Mundaca (Vizcaya) y reside, desde hace a os, en Madrid. Abogado, I.C.A. Madrid. Licenciado en Derecho por la Universidad de Deusto (Bilbao) y Licenciado en Ciencias Econ micas por la Universidad Comercial de Deusto (Bilbao). Profesor Mercado del Arte y Econom a del Arte, en Universidad A. Nebrija / Fundaci n Claves del Arte, Madrid, y en Fundaci n Mar a Forcada, Tudela-Navarra. Desarroll una actividad en el mbito de la gesti n y direcci n empresarial, mientras resid a en Bilbao. A partir de 1977, inicia una actividad profesional y empresarial en el mercado del arte. Su actividad, como galerista y marchante (Galer a Mun - Galer a Miguel Espel) le permiti estar presente durante a os, en el mercado nacional e internacional del Arte. En la actualidad, desarrolla una actividad de Consultor de Arte, en colaboraci n con Mun Consultores de Arte.
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Female Sexual Inversion

Female Sexual Inversion

Chiara Beccalossi

Palgrave Macmillan
2012
nidottu
An examination of how female same-sex desires were represented in a wide range of Italian and British medical writings, 1870-1920. It shows how the psychiatric category of sexual inversion was positioned alongside other medical ideas of same-sex desires, such as the virago, tribade-prostitute, fiamma and gynaecological explanations.
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Iterative Methods without Inversion

Iterative Methods without Inversion

Anatoly Galperin

Productivity Press
2016
sidottu
Iterative Methods without Inversion presents the iterative methods for solving operator equations f(x) = 0 in Banach and/or Hilbert spaces. It covers methods that do not require inversions of f (or solving linearized subproblems). The typical representatives of the class of methods discussed are Ulm’s and Broyden’s methods. Convergence analyses of the methods considered are based on Kantorovich’s majorization principle which avoids unnecessary simplifying assumptions like differentiability of the operator or solvability of the equation. These analyses are carried out under a more general assumption about degree of continuity of the operator than traditional Lipschitz continuity: regular continuity.Key Features The methods discussed are analyzed under the assumption of regular continuity of divided difference operator, which is more general and more flexible than the traditional Lipschitz continuity. An attention is given to criterions for comparison of merits of various methods and to the related concept of optimality of a method of certain class. Many publications on methods for solving nonlinear operator equations discuss methods that involve inversion of linearization of the operator, which task is highly problematic in infinite dimensions. Accessible for anyone with minimal exposure to nonlinear functional analysis.
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