UH Physics Professor Arthur B. Weglei to Receive Prestigious Stolt's Fessenden Award. Arthur Weglein is the Director of the M-OSRP in University of Houston
Internal control consists of measures to provide management assurance that operations are functioning properly, according to the definition. It includes internal checks, internal audits, and safety measures. The document then lists examples of internal control like locking doors and reviewing bills. It outlines types of internal controls like procedural and regulatory controls. Principles of internal control are mentioned such as maintaining secrecy, clear job duties, and rotating duties to ensure work is properly checked and the company remains secure.
O Dropbox é um serviço gratuito que permite armazenar e sincronizar arquivos entre dispositivos. Os arquivos salvos na pasta Dropbox são automaticamente atualizados em todos os computadores e celulares do usuário, permitindo acessar e editar os arquivos de qualquer lugar.
Adult volunteers are needed to assist with the 2014 4-H Winter Leadership Camp by guiding and encouraging youth in activities and responsibilities throughout the weekend to enhance the experience. The application requests contact information, gender, years of experience, certifications, special needs, and a deadline for submission to the County Extension Office.
Dropti.me is a product created by Nick Babcock, Jake Korona, and Robert Wang to address the needs of forgetful, busy, and multi-device users. It allows users to digitize fleeting thoughts and concise snippets through speech-to-text on all their devices for easy recall and sharing. The product aims to digitize ideas from any industry by making notes and ideas always available across all of a user's devices.
Este documento resume diferentes medios de transporte, incluyendo autobuses para transporte urbano, trenes de alta velocidad, automóviles, mototaxis, carrozas reales, teleféricos para montañas, aviones que transportan miles de millones de personas y toneladas de carga anualmente, globos y dirigibles, barcos y diferentes tipos de vehículos como autos de carreras, camiones y automóviles.
This document provides an overview of typography and web design topics. It discusses how typography is the visual expression of language and makes up 95% of web design. It then covers basics of typography including serif fonts, sans-serif fonts, script fonts, and more. It also discusses best practices for choosing fonts including keeping designs simple, relying on quality fonts, and getting second opinions.
Internal control consists of measures to provide management assurance that operations are functioning properly, according to the definition. It includes internal checks, internal audits, and safety measures. The document then lists examples of internal control like locking doors and reviewing bills. It outlines types of internal controls like procedural and regulatory controls. Principles of internal control are mentioned such as maintaining secrecy, clear job duties, and rotating duties to ensure work is properly checked and the company remains secure.
O Dropbox é um serviço gratuito que permite armazenar e sincronizar arquivos entre dispositivos. Os arquivos salvos na pasta Dropbox são automaticamente atualizados em todos os computadores e celulares do usuário, permitindo acessar e editar os arquivos de qualquer lugar.
Adult volunteers are needed to assist with the 2014 4-H Winter Leadership Camp by guiding and encouraging youth in activities and responsibilities throughout the weekend to enhance the experience. The application requests contact information, gender, years of experience, certifications, special needs, and a deadline for submission to the County Extension Office.
Dropti.me is a product created by Nick Babcock, Jake Korona, and Robert Wang to address the needs of forgetful, busy, and multi-device users. It allows users to digitize fleeting thoughts and concise snippets through speech-to-text on all their devices for easy recall and sharing. The product aims to digitize ideas from any industry by making notes and ideas always available across all of a user's devices.
Este documento resume diferentes medios de transporte, incluyendo autobuses para transporte urbano, trenes de alta velocidad, automóviles, mototaxis, carrozas reales, teleféricos para montañas, aviones que transportan miles de millones de personas y toneladas de carga anualmente, globos y dirigibles, barcos y diferentes tipos de vehículos como autos de carreras, camiones y automóviles.
This document provides an overview of typography and web design topics. It discusses how typography is the visual expression of language and makes up 95% of web design. It then covers basics of typography including serif fonts, sans-serif fonts, script fonts, and more. It also discusses best practices for choosing fonts including keeping designs simple, relying on quality fonts, and getting second opinions.
La página web tiene como objetivo principal disminuir la obesidad y el sobrepeso brindando información sobre esta problemática. Contiene secciones de información, interacción, producción y exhibición según los lineamientos pedidos. La información incluye estadísticas y datos relevantes. La interacción se da a través de foros y redes sociales. Si bien considera los cuatro espacios requeridos, podría mejorarse incorporando más actividades y herramientas interactivas para el aprendizaje.
Este documento contiene varias secciones que describen fotografías tomadas de personas y animales favoritos. Cada sección analiza elementos como el enfoque, composición, iluminación y simbolismo utilizado en la fotografía. El autor explica las decisiones tomadas para capturar el momento y transmitir las emociones deseadas a través de la imagen.
Los estudiantes de la Escuela Privada "Olivia Sara Córdova de Scattini" realizaron un trabajo con entusiasmo sobre su lugar de residencia, incluyendo la observación del área y la captura de imágenes con sus celulares de las conexiones eléctricas.
Este documento describe un procedimiento para sintetizar agua a partir de sus elementos constituyentes, hidrógeno y oxígeno. Explica brevemente la naturaleza de los compuestos químicos y proporciona una lista de materiales y un procedimiento detallado que involucra la generación electroquímica de hidrógeno y la producción biológica de oxígeno para luego recombinarlos y formar moléculas de agua.
El documento habla sobre el ciberacoso o ciberbullying, que es el uso de internet, teléfonos móviles y videojuegos en línea para acosar psicológicamente a otros. Explica que las redes sociales se han convertido en un lugar común para que los estudiantes peleen. Algunas consecuencias del ciberbullying son dificultades académicas, problemas de comportamiento e incluso conducta delictiva en casos extremos. Finalmente, propone estrategias como sancionar a los acosadores con suspensión, expulsi
El documento discute cómo las neurociencias están contribuyendo a una mayor comprensión de cuestiones de interés para los educadores, como cómo el cerebro se altera estructuralmente durante el aprendizaje. También describe cómo las técnicas de neuroimagen como la resonancia magnética funcional pueden mostrar los cambios en la activación cerebral durante tareas de aprendizaje y establecer comparaciones entre jóvenes y adultos. Finalmente, señala que combinar diferentes técnicas neurocientíficas como la resonancia magnética funcional y el electroencefalograma puede pro
Este documento describe el uso educativo de WhatsApp para apoyar las clases de idiomas extranjeros. WhatsApp es una aplicación de mensajería gratuita que permite compartir textos, imágenes, videos y archivos. El documento explica cómo los profesores pueden crear grupos de WhatsApp para mantener la comunicación con los estudiantes, enviar materiales educativos y tareas, y aclarar dudas de manera rápida. El objetivo es hacer que el aprendizaje de idiomas sea más activo, moderno y motivador para los estudiant
Edrac is dumped by his girlfriend and spends all day looking at her photos on social media. His cat, Roines, tries to get Edrac's attention but fails. Roines then accidentally merges Edrac's desktop PC, iPhone, and iPad together to form a heart shape across their displays. Edrac is confused by what happened while Roines is pleased with himself.
Tips on Finding an Experienced DWI AttorneyRaymond Tamayo
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive functioning. Exercise causes chemical changes in the brain that may help protect against developing mental illness and improve symptoms for those who already have a condition.
El periodismo 3.0, al igual que la web 2.0 apuntan se refiere a la utilización de las herramientas tecnológicas en beneficio directo de los usuarios.
Ambos se confabulan para crear nichos que privilegien las redes sociales.
Instant of Relativity Revised Copyright 2012 to 2016 by Del John VentruellaDel Ventruella
This document provides an overview and draft of a discussion applying Einstein's general theory of relativity to models of the expanding universe. It begins with an abstract summarizing the application of an infinitesimal expression of Einstein's equation to simple expansionary universe models. It then provides context on the background of general relativity and challenges of tensor mathematics. The document discusses using a simple exponential expansion model and integrating Einstein's equation over 15 billion years to estimate the universe's expansion based on cosmological data from the WMAP survey.
Seismic Imaging and Inversion by Robert H. Stolt & Arthur b WegleinArthur Weglein
University of Houston Professor Arthur Weglein is the co-author ( with Bob Stolt) of a two volume graduate textbook on “Seismic Imaging and Inversion” published in 2012 by Cambridge University Press.
This document provides an introduction to the textbook "Fundamentals in Nuclear Physics" by Jean-Louis Basdevant, James Rich, and Michel Spiro. It discusses the following key points in 3 sentences:
1) The textbook was produced by top scientists at the prestigious Ecole Polytechnique in France and aims to provide undergraduate students with fundamental knowledge of nuclear physics and its applications.
2) The textbook incorporates the most recent scientific advances in nuclear physics into its courses and achieves an outstanding level of quality and consistency across topics due to the high caliber of its authors and reviewers.
3) The textbook was originally restricted to Ecole Polytechnique students but has since been made available in English to reach
The 2022 Nobel Prize in Physics was awarded to Alain Aspect, John Clauser, and Anton Zeilinger for their groundbreaking experimental work on quantum entanglement and violations of Bell's inequalities. John Clauser performed the first conclusive experiment in 1972 showing violations of Bell's inequalities. Alain Aspect then designed experiments in the 1980s enforcing stricter locality conditions. Anton Zeilinger demonstrated quantum teleportation in 1997 and performed another key Bell violation experiment in 1998. Together, their work confirmed the predictions of quantum mechanics and ruled out local hidden variable theories, resolving a decades-long debate between Einstein and Bohr. This established the foundations for the rapidly growing field of quantum information science.
2014 Wroclaw Mandelbrot's Other Model of 1/f NoiseNick Watkins
1) Mandelbrot gave an invited talk discussing several of his models for 1/f noise processes, including fractional Brownian motion (fBm) and fractional Gaussian noise (fGn) which introduced the concept of long-range dependence.
2) However, he later emphasized that reducing 1/f noise solely to the property of self-similarity was an oversimplification. His other models, like fractional hyperbolic motion and multiplicative multifractal cascades, exhibited different visual properties.
3) One lesser known class was his "dustborne" models from 1965-1967, which involved renewal processes with heavy-tailed waiting times. These exhibited properties like ergodicity breaking and time-dependent power spectra
1. The study of chaos analyzes nonlinear dynamical systems that are highly sensitive to initial conditions. While a universal definition of chaos is still lacking, mathematicians generally agree that chaos involves sensitive dependence on initial conditions, mixing, and dense periodic points.
2. This paper formulates a new approach to studying chaos in discrete dynamical systems based on concepts from inverse problems, set-valued mappings, graphical convergence theory, and topology. The author argues that order, chaos and complexity can be viewed as parts of a unified mathematical structure applying topological convergence theory to increasingly nonlinear mappings.
3. By applying concepts from spectral approximation theory and introducing "latent chaotic states", the author aims to develop a theory of chaos and interpret how nature
Rainer Weiss, Barry Barish, and Kip Thorne were awarded the 2017 Nobel Prize in Physics for their contributions to the LIGO detector and the observation of gravitational waves. LIGO detected gravitational waves produced by colliding black holes over 1 billion years ago, providing the first direct observation of gravitational waves and confirming a prediction of Einstein's theory of general relativity. Weiss invented the laser interferometry technique used by LIGO to detect the gravitational waves, while Thorne and Barish played instrumental roles in establishing the LIGO project to realize the decades-long effort to directly detect gravitational waves.
Gravity: Superstrings or Entropy? A Modest Proffer from an Amateur ScientistJohn47Wind
This essay evaluates the promise that superstring theory will culminate in a quantum theory of gravity that unifies all the forces of nature into one package. In particular, the proponents of superstring theory promise that it will show how all forces of nature are “unified” at high energies. The essay traces the history of string theory from its humble beginnings in the 1960s, to explain the scattering of sub-atomic particles, to its culmination as five different string theories that supposedly comprise a yet-to-be defined theory named M-theory. In contrast, this essay presents a simple theory of gravity based on entropy that is distributed throughout space. A surprising consequence of entropic gravity is that Newton’s constant, G, has been decreasing over the life of universe, which fulfills the unfulfilled promise made by string theorists. Moreover, this consequence can be tested experimentally, unlike string theory, which makes no testable predictions.
Artigo descreve o código computacional utilizado no filme interstellar para gerar o buraco negro Gargantua e como isso trouxe conclusões e ideias sobre os buracos negros em rotação.
La página web tiene como objetivo principal disminuir la obesidad y el sobrepeso brindando información sobre esta problemática. Contiene secciones de información, interacción, producción y exhibición según los lineamientos pedidos. La información incluye estadísticas y datos relevantes. La interacción se da a través de foros y redes sociales. Si bien considera los cuatro espacios requeridos, podría mejorarse incorporando más actividades y herramientas interactivas para el aprendizaje.
Este documento contiene varias secciones que describen fotografías tomadas de personas y animales favoritos. Cada sección analiza elementos como el enfoque, composición, iluminación y simbolismo utilizado en la fotografía. El autor explica las decisiones tomadas para capturar el momento y transmitir las emociones deseadas a través de la imagen.
Los estudiantes de la Escuela Privada "Olivia Sara Córdova de Scattini" realizaron un trabajo con entusiasmo sobre su lugar de residencia, incluyendo la observación del área y la captura de imágenes con sus celulares de las conexiones eléctricas.
Este documento describe un procedimiento para sintetizar agua a partir de sus elementos constituyentes, hidrógeno y oxígeno. Explica brevemente la naturaleza de los compuestos químicos y proporciona una lista de materiales y un procedimiento detallado que involucra la generación electroquímica de hidrógeno y la producción biológica de oxígeno para luego recombinarlos y formar moléculas de agua.
El documento habla sobre el ciberacoso o ciberbullying, que es el uso de internet, teléfonos móviles y videojuegos en línea para acosar psicológicamente a otros. Explica que las redes sociales se han convertido en un lugar común para que los estudiantes peleen. Algunas consecuencias del ciberbullying son dificultades académicas, problemas de comportamiento e incluso conducta delictiva en casos extremos. Finalmente, propone estrategias como sancionar a los acosadores con suspensión, expulsi
El documento discute cómo las neurociencias están contribuyendo a una mayor comprensión de cuestiones de interés para los educadores, como cómo el cerebro se altera estructuralmente durante el aprendizaje. También describe cómo las técnicas de neuroimagen como la resonancia magnética funcional pueden mostrar los cambios en la activación cerebral durante tareas de aprendizaje y establecer comparaciones entre jóvenes y adultos. Finalmente, señala que combinar diferentes técnicas neurocientíficas como la resonancia magnética funcional y el electroencefalograma puede pro
Este documento describe el uso educativo de WhatsApp para apoyar las clases de idiomas extranjeros. WhatsApp es una aplicación de mensajería gratuita que permite compartir textos, imágenes, videos y archivos. El documento explica cómo los profesores pueden crear grupos de WhatsApp para mantener la comunicación con los estudiantes, enviar materiales educativos y tareas, y aclarar dudas de manera rápida. El objetivo es hacer que el aprendizaje de idiomas sea más activo, moderno y motivador para los estudiant
Edrac is dumped by his girlfriend and spends all day looking at her photos on social media. His cat, Roines, tries to get Edrac's attention but fails. Roines then accidentally merges Edrac's desktop PC, iPhone, and iPad together to form a heart shape across their displays. Edrac is confused by what happened while Roines is pleased with himself.
Tips on Finding an Experienced DWI AttorneyRaymond Tamayo
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive functioning. Exercise causes chemical changes in the brain that may help protect against developing mental illness and improve symptoms for those who already have a condition.
El periodismo 3.0, al igual que la web 2.0 apuntan se refiere a la utilización de las herramientas tecnológicas en beneficio directo de los usuarios.
Ambos se confabulan para crear nichos que privilegien las redes sociales.
Instant of Relativity Revised Copyright 2012 to 2016 by Del John VentruellaDel Ventruella
This document provides an overview and draft of a discussion applying Einstein's general theory of relativity to models of the expanding universe. It begins with an abstract summarizing the application of an infinitesimal expression of Einstein's equation to simple expansionary universe models. It then provides context on the background of general relativity and challenges of tensor mathematics. The document discusses using a simple exponential expansion model and integrating Einstein's equation over 15 billion years to estimate the universe's expansion based on cosmological data from the WMAP survey.
Seismic Imaging and Inversion by Robert H. Stolt & Arthur b WegleinArthur Weglein
University of Houston Professor Arthur Weglein is the co-author ( with Bob Stolt) of a two volume graduate textbook on “Seismic Imaging and Inversion” published in 2012 by Cambridge University Press.
This document provides an introduction to the textbook "Fundamentals in Nuclear Physics" by Jean-Louis Basdevant, James Rich, and Michel Spiro. It discusses the following key points in 3 sentences:
1) The textbook was produced by top scientists at the prestigious Ecole Polytechnique in France and aims to provide undergraduate students with fundamental knowledge of nuclear physics and its applications.
2) The textbook incorporates the most recent scientific advances in nuclear physics into its courses and achieves an outstanding level of quality and consistency across topics due to the high caliber of its authors and reviewers.
3) The textbook was originally restricted to Ecole Polytechnique students but has since been made available in English to reach
The 2022 Nobel Prize in Physics was awarded to Alain Aspect, John Clauser, and Anton Zeilinger for their groundbreaking experimental work on quantum entanglement and violations of Bell's inequalities. John Clauser performed the first conclusive experiment in 1972 showing violations of Bell's inequalities. Alain Aspect then designed experiments in the 1980s enforcing stricter locality conditions. Anton Zeilinger demonstrated quantum teleportation in 1997 and performed another key Bell violation experiment in 1998. Together, their work confirmed the predictions of quantum mechanics and ruled out local hidden variable theories, resolving a decades-long debate between Einstein and Bohr. This established the foundations for the rapidly growing field of quantum information science.
2014 Wroclaw Mandelbrot's Other Model of 1/f NoiseNick Watkins
1) Mandelbrot gave an invited talk discussing several of his models for 1/f noise processes, including fractional Brownian motion (fBm) and fractional Gaussian noise (fGn) which introduced the concept of long-range dependence.
2) However, he later emphasized that reducing 1/f noise solely to the property of self-similarity was an oversimplification. His other models, like fractional hyperbolic motion and multiplicative multifractal cascades, exhibited different visual properties.
3) One lesser known class was his "dustborne" models from 1965-1967, which involved renewal processes with heavy-tailed waiting times. These exhibited properties like ergodicity breaking and time-dependent power spectra
1. The study of chaos analyzes nonlinear dynamical systems that are highly sensitive to initial conditions. While a universal definition of chaos is still lacking, mathematicians generally agree that chaos involves sensitive dependence on initial conditions, mixing, and dense periodic points.
2. This paper formulates a new approach to studying chaos in discrete dynamical systems based on concepts from inverse problems, set-valued mappings, graphical convergence theory, and topology. The author argues that order, chaos and complexity can be viewed as parts of a unified mathematical structure applying topological convergence theory to increasingly nonlinear mappings.
3. By applying concepts from spectral approximation theory and introducing "latent chaotic states", the author aims to develop a theory of chaos and interpret how nature
Rainer Weiss, Barry Barish, and Kip Thorne were awarded the 2017 Nobel Prize in Physics for their contributions to the LIGO detector and the observation of gravitational waves. LIGO detected gravitational waves produced by colliding black holes over 1 billion years ago, providing the first direct observation of gravitational waves and confirming a prediction of Einstein's theory of general relativity. Weiss invented the laser interferometry technique used by LIGO to detect the gravitational waves, while Thorne and Barish played instrumental roles in establishing the LIGO project to realize the decades-long effort to directly detect gravitational waves.
Gravity: Superstrings or Entropy? A Modest Proffer from an Amateur ScientistJohn47Wind
This essay evaluates the promise that superstring theory will culminate in a quantum theory of gravity that unifies all the forces of nature into one package. In particular, the proponents of superstring theory promise that it will show how all forces of nature are “unified” at high energies. The essay traces the history of string theory from its humble beginnings in the 1960s, to explain the scattering of sub-atomic particles, to its culmination as five different string theories that supposedly comprise a yet-to-be defined theory named M-theory. In contrast, this essay presents a simple theory of gravity based on entropy that is distributed throughout space. A surprising consequence of entropic gravity is that Newton’s constant, G, has been decreasing over the life of universe, which fulfills the unfulfilled promise made by string theorists. Moreover, this consequence can be tested experimentally, unlike string theory, which makes no testable predictions.
Artigo descreve o código computacional utilizado no filme interstellar para gerar o buraco negro Gargantua e como isso trouxe conclusões e ideias sobre os buracos negros em rotação.
2014 OU Mandelbrot's eyes and 1/f noiseNick Watkins
The document discusses Benoit Mandelbrot's work on modeling wild fluctuations and long-range dependence that he observed in various real-world datasets. It describes how his initial attempts to explain these phenomena with heavy-tailed distributions and fractional Brownian motion led him to abstract the property of self-similarity in the spectral domain. The document also notes that Mandelbrot warned against over-interpreting any single property and advocated using our eyes alongside formulas to fully understand complexity.
Examining perceptions of astronomy images across mobile platformsKim Arcand
In a recent Aesthetics & Astronomy study, an online survey and focus groups were used to explore whether mobile platforms affect perception of astronomy images. In the online study, participants on their mobile devices were randomly assigned to view astronomy images. Two focus groups were also conducted with experts and non-expert volunteers. Both groups were presented with deep space images across platforms- a large projection screen, an iPad, and an iPhone. Although this was part of a larger study, we report here just on the mobile platform. Results indicated that there was support for Smith & Smith's 2001 concept of facsimile accommodation in that, as might be expected, bigger was better except in the absence of a comparison, where participants adapted to the platform size. The results raise questions as to both size and quality of images on mobile platforms in a rapidly changing technological world.
The paper proposes a model of a unitary quantum field theory where the particle is represented as a wave packet. The frequency dispersion equation is chosen so that the packet periodically appears and disappears without changing its form. The envelope of the process is identified with a conventional wave function. Equation of such a field is nonlinear and relativistically invariant. With proper adjustments, they are reduced to Dirac, Schroedinger and Hamilton-Jacobi equations. A number of new experimental effects are predicted both for high and low energies.
Cosmic Adventure 3.01 Making of the Pandora's BoxStephen Kwong
Einstein grasped the Excalibur and mixed it with time, space, and coordinate transformation, resulting in the theory of special relativity. The mix involved all the basics of physics resulting in the Pandora's box of modern physics. It became hard to extricate except with Zyrkonian solutions.
A Technique for Partially Solving a Family of Diffusion Problemsijtsrd
Our aim in this paper is to expose the interesting role played by differ integral specifically, semi derivatives and semi integrals in solving certain diffusion problems. Along with the wave equation and Laplace equation, the diffusion equation is one of the three fundamental partial differential equation of mathematical physics. I will not discuss convential solutions of the diffusion equation at all. These range from closed form solutions for very simple model problems to computer methods for approximating the concentration of the diffusing substance on a network of points. Such solutions are described extensively in the literature .My purpose, rather, is to expose a technique for partially solving a family of diffusion problems, a technique that leads to a compact equation which is first order partially and half order temporally. I shall show that, for semi finite systems initially at equilibrium, our semi differential equation leads to a relationship between the intensive variable and the flux at the boundary. Use of this relationship then obviates the need to solve the original diffusion equation in those problems for which this behavior at the boundary is of primary importance. I shall, in fact, freely make use of the general properties established for differ integral operators as if all my functions were differ integrable. Dr. Ayaz Ahmad "A Technique for Partially Solving a Family of Diffusion Problems" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-6 , October 2018, URL: http://www.ijtsrd.com/papers/ijtsrd18576.pdf
This document discusses upcoming experiments that will push tests of Einstein's theory of general relativity to new limits. Researchers plan to use pulsars, black holes, and gravitational wave detectors to search for deviations from relativity's predictions in extreme gravitational environments. Upcoming experiments include using pulsars to test the strong equivalence principle, directly imaging the black hole at the center of the Milky Way for the first time to test predictions about black hole shadows, and detecting gravitational waves from merging black holes and neutron stars. The results of these ambitious experiments could confirm Einstein's theory or reveal where it may break down and require modification.
LSE 2012 Extremes, Bursts and Mandelbrot's Eyes ... and Five Ways to Mis-esti...Nick Watkins
This document discusses Mandelbrot's work on non-Gaussian stochastic processes and their implications for estimating risk and extremes. It contains the following key points:
1) Mandelbrot made three "giant leaps" in the 1960s-70s by proposing alpha-stable models to describe heavy-tailed fluctuations, applying self-similarity to model long-range dependence, and developing multifractal cascades.
2) If natural phenomena exhibit heavy tails and long memory, but models don't account for this, it can lead to underestimating risk and extremes. Mandelbrot's fractional stable motion combines heavy tails and long-range dependence.
3) Events that are rare according to short
Einstein’s special theory of relativity misunderstoodslpr2013
Einstein's Special Theory of Relativity is misunderstood and does not actually describe the mechanics of the universe, according to the document. It introduces Space Lattice Theory, which proposes that space is densely packed with small objects ("Aa") arranged in a lattice structure, rather than being mostly empty. In this theory, defects in the lattice structure create what we observe as matter and energy. The theory provides a model for grand unification by explaining all forces and phenomena in the universe through the behavior of these Aa objects in space. It is presented by Bruce Nappi through the non-profit research organization A3 Research Institute as an alternative to modern physics theories.
2015 Dresden Mandelbrot's other route to1 over fNick Watkins
Mandelbrot made important contributions to understanding the phenomenon of 1/f noise through several models between 1963-1972:
1) He proposed heavy-tailed distributions to explain wild fluctuations in cotton prices (1963) and the Hurst effect in Nile river levels.
2) This led to his fractional Gaussian noise (fGn) and fractional Brownian motion models which produce a 1/f spectral shape through long-range dependence or self-similarity (1965-1968). These stationary and non-stationary models were controversial due to their singular power spectra.
3) Less well known are his "conditionally stationary" models from 1963-1967 which achieved 1/f noise through long-tailed waiting times
Similar to Stolt's Fessenden Award Citation For Arthur B. weglein, University of Houston (20)
The document discusses (1) a new business model and IBM proposal for cost-effective seismic processing through cloud computing, (2) an invitation to participate in a pilot project using IBM cloud computing for multiple attenuation, (3) speedups of internal multiple attenuation achieved by ConocoPhillips, (4) upcoming deliverables from M-OSRP that address industry challenges and will benefit from IBM's cloud computing, and (5) an invitation to an upcoming technical review meeting.
Wavelet estimation for a multidimensional acoustic or elastic earthArthur Weglein
A new and general wave theoretical wavelet estimation
method is derived. Knowing the seismic wavelet
is important both for processing seismic data and for
modeling the seismic response. To obtain the wavelet,
both statistical (e.g., Wiener-Levinson) and deterministic
(matching surface seismic to well-log data) methods
are generally used. In the marine case, a far-field
signature is often obtained with a deep-towed hydrophone.
The statistical methods do not allow obtaining
the phase of the wavelet, whereas the deterministic
method obviously requires data from a well. The
deep-towed hydrophone requires that the water be
deep enough for the hydrophone to be in the far field
and in addition that the reflections from the water
bottom and structure do not corrupt the measured
wavelet. None of the methods address the source
array pattern, which is important for amplitude-versus-
offset (AVO) studies.
The inverse scattering series for tasks associated with primaries: direct non...Arthur Weglein
The inverse scattering series for tasks associated with primaries: direct non-linear inversion of 1D elastic media. In this paper, research on direct inversion for two pa-
rameter acoustic media (Zhang and Weglein, 2005) is
extended to the three parameter elastic case. We present
the first set of direct non-linear inversion equations for
1D elastic media (i.e., depth varying P-velocity, shear
velocity and density). The terms for moving mislocated
reflectors are shown to be separable from amplitude
correction terms. Although in principle this direct
inversion approach requires all four components of elastic
data, synthetic tests indicate that consistent value-added
results may be achieved given only ˆDPP measurements.
We can reasonably infer that further value would derive
from actually measuring ˆDPP , ˆD PS, ˆDSP and ˆDSS as
the method requires. The method is direct with neither
a model matching nor cost function minimization.
Internal multiple attenuation using inverse scattering: Results from prestack 1 & 2D acoustic and
elastic synthetics
R. T. Coates*, Schlumberger Cambridge Research, A. B. Weglein, Arco Exploration and Production Technology
Summary
The attenuation of internal multiples in a multidimensional
earth is an important and longstanding problem in exploration
seismics. In this paper we report the results of applying
an attenuation algorithm based on the inverse scattering
series to synthetic prestack data sets generated in on
and two dimensional earth models. The attenuation algorithm
requires no information about the subsurface structure
or the velocity field. However, detailed information about
the source wavelet is a prerequisite. An attractive feature of:
the attenuation algorithm is the preservation of the amplitude
(and phase) of primary events in the data; thus allowing for
subsequent AVO and other true amplitude processing.
The document discusses the inverse scattering series (ISS) approach for eliminating internal multiples in land seismic data. ISS methods do not require information about the subsurface and can predict the traveltimes and amplitudes of all internal multiples. The authors apply 1D and 1.5D ISS algorithms to synthetic and field data from Saudi Arabia and achieve encouraging results, successfully attenuating most internal multiples while preserving primaries. However, further work is needed to more accurately predict multiples to handle interference between primaries and multiples.
This article provides an alternative perspective on full-waveform inversion (FWI) methods, arguing that current FWI approaches are indirect model-matching methods rather than direct inversion. The article aims to 1) caution against claims that FWI is a final solution, 2) propose a direct inverse approach, and 3) provide an overview comparing indirect FWI and direct inversion methods. Indirect FWI methods incorrectly use modeling equations run backwards rather than true direct inversion, limiting the understanding and effectiveness of the solutions.
The Inverse Scattering Series (ISS) is a direct inversion method
for a multidimensional acoustic, elastic and anelastic earth. It
communicates that all inversion processing goals are able to
be achieved directly and without any subsurface information.
This task is reached through a task-specific subseries of the
ISS. Using primaries in the data as subevents of the first-order
internal multiples, the leading-order attenuator can predict the
time of all the first-order internal multiples and is able to attenuate
them.
However, the ISS internal multiple attenuation algorithm can
be a computationally demanding method specially in a complex
earth. By using an approach that is based on two angular
quantities and that was proposed in Terenghi et al. (2012), the
cost of the algorithm can be controlled. The idea is to use the
two angles as key-control parameters, by limiting their variation,
to disregard some calculated contributions of the algorithm
that are negligible. Moreover, the range of integration
can be chosen as a compromise of the required degree of accuracy
and the computational time saving.
This time-saving approach is presented
Inverse scattering series for multiple attenuation: An example with surface a...Arthur Weglein
A multiple attenuation method derived from an inverse scattering
series is described. The inversion series approach allows a
separation of multiple attenuation subseries from the full series.
The surface multiple attenuation subseries was described and illustrated
in Carvalho et al. (1991, 1992). The internal multiple
attenuation method consists of selecting the parts of the odd
terms that are associated with removing only multiply reflected
energy. The method, for both types of multiples, is multidimensional
and does not rely on periodicity or differential moveout,
nor does it require a model of the reflectors generating the multiples.
An example with internal and surface multiples will be
presented.
In this paper we present a multidimensional method for attenuating internal multiples that derives from
an inverse scattering series . The method doesn't depend on periodicity or differential moveout, nor does it
require a model for the multiple generating reflectors.
Summary
Methods for removal of free-surface and internal multiples have been developed from bath a feedback model approach and inverse scatterin g theory. White these two formulations derive from different mathematica) viewpoints,
the resulting algorithm s for free-surface multiple are very similar. By contrast , the feedback and inverse scattering
method for internal multiple are totally different and have different requirements for sub surface information or
interpretive intervention . The former removes all multiple related to a certain boundary with the a of a surface
integral along this boundary ; the alter wilt predict and attenuate a ll internal multiple a t the same time . In this paper, we continue our comparison study of these internal multiple attenuation method ; specifically , we examine two
different realizations of the feedback method and the inverse scattering technique .
Internal multiple attenuation using inverse scattering: Results from prestack...Arthur Weglein
The attenuation of internal multiples in a multidimensional
earth is an important and longstanding problem in exploration
seismics. In this paper we report the results of applying
an attenuation algorithm based on the inverse scattering
series to synthetic prestack data sets generated in on
and two dimensional earth models. The attenuation algorithm
requires no information about the subsurface structure
or the velocity field. However, detailed information about
the source wavelet is a prerequisite. An attractive feature of:
the attenuation algorithm is the preservation of the amplitude
(and phase) of primary events in the data; thus allowing for
subsequent AVO and other true amplitude processing.
Wavelet estimation for a multidimensional acoustic or elastic earth- Arthur W...Arthur Weglein
A new and general wave theoretical wavelet estimation
method is derived. Knowing the seismic wavelet
is important both for processing seismic data and for
modeling the seismic response. To obtain the wavelet,
both statistical (e.g., Wiener-Levinson) and deterministic
(matching surface seismic to well-log data) methods
are generally used. In the marine case, a far-field
signature is often obtained with a deep-towed hydrophone.
The statistical methods do not allow obtaining
the phase of the wavelet, whereas the deterministic
method obviously requires data from a well. The
deep-towed hydrophone requires that the water be
deep enough for the hydrophone to be in the far field
and in addition that the reflections from the water
bottom and structure do not corrupt the measured
wavelet. None of the methods address the source
array pattern, which is important for amplitude-versus-
offset (AVO) studies
The document analyzes the reference velocity sensitivity of an elastic internal multiple attenuation algorithm. It first provides background on internal multiples and inverse scattering series methods for their attenuation. It then presents a 1.5D layered earth model and uses it to show that the elastic internal multiple algorithm can correctly predict arrival times without requiring an accurate reference velocity model, similarly to the acoustic case. The analysis involves deriving expressions for predicted internal multiples in the frequency-wavenumber domain and showing they depend only on the traveltimes of the primary reflections involved, not the reference velocities.
This document summarizes finite difference modeling methods used at M-OSRP. It discusses:
1) The second order time and fourth order space finite difference schemes used to model acoustic wave propagation.
2) How boundary conditions like Dirichlet/Neumann generate strong spurious reflections that can mask true events.
3) The importance of accurate source fields for modeling - better source fields lead to more accurate linear inversions and the ability to observe phenomena like polarity reversals in modeled data.
Inverse scattering series for multiple attenuation: An example with surface a...Arthur Weglein
A multiple attenuation method derived from an inverse scattering
series is described. The inversion series approach allows a
separation of multiple attenuation subseries from the full series.
The surface multiple attenuation subseries was described and illustrated
in Carvalho et al. (1991, 1992). The internal multiple
attenuation method consists of selecting the parts of the odd
terms that are associated with removing only multiply reflected
energy. The method, for both types of multiples, is multidimensional
and does not rely on periodicity or differential moveout,
nor does it require a model of the reflectors generating the multiples.
An example with internal and surface multiples will be
presented.
This document provides an overview of wound healing, its functions, stages, mechanisms, factors affecting it, and complications.
A wound is a break in the integrity of the skin or tissues, which may be associated with disruption of the structure and function.
Healing is the body’s response to injury in an attempt to restore normal structure and functions.
Healing can occur in two ways: Regeneration and Repair
There are 4 phases of wound healing: hemostasis, inflammation, proliferation, and remodeling. This document also describes the mechanism of wound healing. Factors that affect healing include infection, uncontrolled diabetes, poor nutrition, age, anemia, the presence of foreign bodies, etc.
Complications of wound healing like infection, hyperpigmentation of scar, contractures, and keloid formation.
Gender and Mental Health - Counselling and Family Therapy Applications and In...PsychoTech Services
A proprietary approach developed by bringing together the best of learning theories from Psychology, design principles from the world of visualization, and pedagogical methods from over a decade of training experience, that enables you to: Learn better, faster!
How to Manage Reception Report in Odoo 17Celine George
A business may deal with both sales and purchases occasionally. They buy things from vendors and then sell them to their customers. Such dealings can be confusing at times. Because multiple clients may inquire about the same product at the same time, after purchasing those products, customers must be assigned to them. Odoo has a tool called Reception Report that can be used to complete this assignment. By enabling this, a reception report comes automatically after confirming a receipt, from which we can assign products to orders.
Level 3 NCEA - NZ: A Nation In the Making 1872 - 1900 SML.pptHenry Hollis
The History of NZ 1870-1900.
Making of a Nation.
From the NZ Wars to Liberals,
Richard Seddon, George Grey,
Social Laboratory, New Zealand,
Confiscations, Kotahitanga, Kingitanga, Parliament, Suffrage, Repudiation, Economic Change, Agriculture, Gold Mining, Timber, Flax, Sheep, Dairying,
Elevate Your Nonprofit's Online Presence_ A Guide to Effective SEO Strategies...TechSoup
Whether you're new to SEO or looking to refine your existing strategies, this webinar will provide you with actionable insights and practical tips to elevate your nonprofit's online presence.
THE SACRIFICE HOW PRO-PALESTINE PROTESTS STUDENTS ARE SACRIFICING TO CHANGE T...indexPub
The recent surge in pro-Palestine student activism has prompted significant responses from universities, ranging from negotiations and divestment commitments to increased transparency about investments in companies supporting the war on Gaza. This activism has led to the cessation of student encampments but also highlighted the substantial sacrifices made by students, including academic disruptions and personal risks. The primary drivers of these protests are poor university administration, lack of transparency, and inadequate communication between officials and students. This study examines the profound emotional, psychological, and professional impacts on students engaged in pro-Palestine protests, focusing on Generation Z's (Gen-Z) activism dynamics. This paper explores the significant sacrifices made by these students and even the professors supporting the pro-Palestine movement, with a focus on recent global movements. Through an in-depth analysis of printed and electronic media, the study examines the impacts of these sacrifices on the academic and personal lives of those involved. The paper highlights examples from various universities, demonstrating student activism's long-term and short-term effects, including disciplinary actions, social backlash, and career implications. The researchers also explore the broader implications of student sacrifices. The findings reveal that these sacrifices are driven by a profound commitment to justice and human rights, and are influenced by the increasing availability of information, peer interactions, and personal convictions. The study also discusses the broader implications of this activism, comparing it to historical precedents and assessing its potential to influence policy and public opinion. The emotional and psychological toll on student activists is significant, but their sense of purpose and community support mitigates some of these challenges. However, the researchers call for acknowledging the broader Impact of these sacrifices on the future global movement of FreePalestine.
A Visual Guide to 1 Samuel | A Tale of Two HeartsSteve Thomason
These slides walk through the story of 1 Samuel. Samuel is the last judge of Israel. The people reject God and want a king. Saul is anointed as the first king, but he is not a good king. David, the shepherd boy is anointed and Saul is envious of him. David shows honor while Saul continues to self destruct.
How to Download & Install Module From the Odoo App Store in Odoo 17Celine George
Custom modules offer the flexibility to extend Odoo's capabilities, address unique requirements, and optimize workflows to align seamlessly with your organization's processes. By leveraging custom modules, businesses can unlock greater efficiency, productivity, and innovation, empowering them to stay competitive in today's dynamic market landscape. In this tutorial, we'll guide you step by step on how to easily download and install modules from the Odoo App Store.
Stolt's Fessenden Award Citation For Arthur B. weglein, University of Houston
1. 25
Art Weglein is receiving the Reginald Fessenden Award for his influence on the seismic industry
through his work in inverse scattering. He and his colleagues and students have published widely
on this topic and the result is seen in the thinking and practice in the industry today, particularly
in the area of treatment of multiple reflections.
Reginald Fessenden Award to
Arthur Benjamin Weglein
by Robert H. Stolt
During the 1970s, a few theoretical physicists ar-
rived on the seismic scene, young and naive enough to
believe that the apparatus of quantum scattering the-
ory could be applied to the inverse seismic problem.
Among them was Art Weglein, who started at Cities
Service in 1978 with a Ph.D. in physics from CUNY.
Art and I, among others, were fascinated with the
inverse scattering series, and hopeful that it contained
the key to the information hidden in seismic data. Apart
from some success with the first term in the series (the
so-called Born approximation), early results were dis-
couraging. Inadequate computer power was certainly a
problem, but so was faintheartedness. Art, more than
anyone else, remained true to the original vision, min-
ing the inverse scattering series for remedies to per-
plexing problems, including surface multiple removal,
internal multiple removal, and imaging through com-
plexity. Along the way, he has taught and mentored a
number of young geophysicists, who have now taken
their place as leaders in the seismic community.
In addition to working at Cities, Sohio, and
ARCO, Art spent 1989–90 as a visiting professor at
the Federal University of Bahia in Brazil, and 1990–94
as a scientific advisor at Schlumberger Cambridge Re-
search in Cambridge, England. In 2000, Art joined the
faculty at the University of Houston, where he now oc-
cupies the Hugh Roy and Lillie Cranz Cullen Distin-
guished University Professorship in Physics. In 2003,
Art visited 25 SEG Sections in six countries as SEG
Distinguished Lecturer.
Art is very much a theorist, though he always
manages to keep a toe dipped in reality. At a time when
most "research" is short term, Art's horizon is far away,
though he is never without clear objectives. His gentle
humor and unwavering commitment to good science
make him a joy to work with. His scientific curiosity
rarely turns off, even on evenings and weekends. He
and his wife Chris have nevertheless raised a fine fam-
ily, and remain active and involved with contemporary
affairs.
Art has generated some controversy with his ve-
locity-independent approach to processing. Although
the inverse scattering series requires an initial or "back-
ground" velocity model, the final solution is, on paper,
independent of the initial model. Velocity-independent
processing is not unknown within the industry, helping
most people now accept velocity-independent surface-
multiple removal, many to accept velocity-independent
internal multiple attenuation, and some to accept veloc-
ity-independent imaging.
Arguments against velocity-independence have
been made from the inverse series itself. Convergence
of the series depends on the initial model being "close",
in some sense, to the final solution. Analysis of individ-
ual terms in the series requires a Feynman-like interpre-
tation, with waves propagating in definable directions
between multiple scattering points. If the background
velocity differs too much from the actual velocity, this
interpretation becomes questionable.
Fortunately, for a quantum field theorist, indeter-
minacy is not an obstacle. With the outcome far from
sure, Art approached the inverse series as perform-
ing a number of discrete tasks, some of which may be
isolated by confining attention to certain terms (i.e., a
subseries) of the full inverse scattering series. Some of
these subseries may be sensitive to the initial velocity
model, but others may not. By dissecting the series, Art
and his coworkers have produced a suite of useful pro-
cesses while advancing substantially their understand-
ing of the inverse seismic problem.
Where success is certain, anyone may go. Art has
shown a consistent willingness to swim in deep water,
and has demonstrated his ability to do so. It is an honor
and a privilege to present Arthur B. Weglein for the
Reginald Fessenden Award.