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Criticality Auto-organized The document discusses the concept of self-organized criticality (SOC) and provides several examples from physics, biology and neuroscience where SOC occurs. It summarizes Allan Turing's analogy of critical and supercritical states in atomic piles and minds. It then discusses experiments showing neuronal avalanches exhibit SOC and models incorporating dynamically adjusting neuronal gains that self-organize to a critical region. Evidence suggests some neuronal networks may operate in a supercritical state for maximum dynamical range.

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Autoregression

Autoregression

Causal Dynamical Triangulations

Causal Dynamical Triangulations

An Affine Combination Of Two Lms Adaptive Filters

An Affine Combination Of Two Lms Adaptive Filters

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Autoregression

The document outlines auto-regressive (AR) processes of order p. It begins by introducing AR(p) processes formally and discussing white noise. It then derives the first and second moments of an AR(p) process. Specific details are provided about AR(1) and AR(2) processes, including equations for their variance as a function of the noise variance and AR coefficients. Examples of simulated AR(1) processes are shown for different coefficient values.

Causal Dynamical Triangulations

This document discusses the path integral formulation of quantum mechanics and its application to relativistic theories like general relativity. It introduces causal dynamical triangulations as an approach to quantizing gravity by defining a path integral over causal triangulations of spacetime geometries. This allows imposing global hyperbolicity and causality constraints to avoid issues like wormholes and baby universes. The approach aims to make quantum gravity computations possible using desktop computers by dynamically triangulating Lorentzian spacetimes.

An Affine Combination Of Two Lms Adaptive Filters

A recent paper studied the statistical behavior of an affine com- bination of two LMS adaptive filters that simultaneously adapt on the same inputs. The filter outputs are linearly combined to yield a performance that is better than that of either filter. Various de- cision rules can be used to determine the time-varying combining parameter λ(n). A scheme based on the ratio of error powers of the two filters was proposed. Monte Carlo simulations demon- strated nearly optimum performance for this scheme. The purpose of this paper is to analyze the statistitical behavior of such error power scheme. Expressions are derived for the mean behavior of λ(n) and for the weight mean-square deviation. Monte Carlo simulations show excellent agreement with the theoretical predictions.

Notes mech v

1) A mass attached to a spring can move up and down from its equilibrium position. Its movement is modeled by a differential equation that depends on factors like the mass, spring constant, damping, and any external forcing.
2) There are three types of behavior for damped systems without external forcing: underdamped systems oscillate with a decaying amplitude, critically damped systems do not oscillate and cross the equilibrium at most once, and overdamped systems do not oscillate and may or may not cross the equilibrium.
3) For an undamped system with external periodic forcing, the behavior depends on whether the forcing frequency matches the natural frequency. If they are different, the displacement takes the form of a

12 x1 t04 05 displacement, velocity, acceleration (2012)

The document discusses key concepts in calculus that are applied to physical systems, including:
- Displacement (distance from a point with direction)
- Velocity (rate of change of displacement over time, including direction)
- Acceleration (rate of change of velocity over time)
It provides examples of how to calculate acceleration, velocity, and displacement from equations describing physical phenomena. The relationships between these concepts are illustrated, such as how displacement can be determined by integrating velocity or differentiating acceleration. Calculus allows describing physical systems quantitatively and determining values like speed, acceleration, and position at different points in time.

Hw4sol

This document contains the homework assignment for Dr. Ashu Sabharwal's ELEC 430 class at Rice University due on February 19, 2009. It includes 3 exercises on topics related to signaling and detection:
1. The likelihood ratio test is derived for a binary communication system with additive white Gaussian noise. Conditional probability density functions are found and used to determine the probability of error as a function of threshold.
2. Matched filters are discussed for an antipodal signaling system. The impulse response and output of the matched filter are sketched. Expressions are derived for the noise variance and probability of error.
3. Orthogonal signal properties are explored for a set of signals that are modified by subtracting

ML Reading Group (Intro to Quantum Computation)

In the first part, Tonda will give a brief introduction to quantum mechanics illustrated on simple discrete systems much like Feynman has in his famous lectures. We will focus on the concepts of spin and photon polarisation.
In the second part we will, one by one, tackle the basics of quantum computation: qubit, quantum computational operation, universal set of quantum instructions and how they relate to Turing machines.
And finally we will take a look at some of the most famous quantum algorithms and for some of them really look under the hood. Also, we will go through a brief overview of the experiments that have been run over the world in past decade or so.

Quantized and finite reference of frame

1) The document proposes a theory of a quantized and finite reference frame based on the Quantized Universe Theory and Grid Extra Dimensions Theory.
2) It suggests that space is made up of discrete 3D elements the size of the Planck length, with extra dimensions between them allowing for quantum nonlocal behavior.
3) Velocities, masses, and momenta are proposed to have discrete quantized values depending on factors like the particle's wavelength and Planck's constant, with a minimum time between movements of a particle equal to the Planck time.

Lecture 2 sapienza 2017

PROGRAMMA ATTIVITA’ DIDATTICA A.A. 2016/17
DOTTORATO DI RICERCA IN INGEGNERIA STRUTTURALE E GEOTECNICA
____________________________________________________________
STOCHASTIC DYNAMICS AND MONTE CARLO SIMULATION IN EARTHQUAKE ENGINEERING APPLICATIONS
Lecture Series by
Agathoklis Giaralis, Ph.D., M.ASCE., P.E. City, University of London
Visiting Professor Sapienza University of Rome

Chemical dynamics and rare events in soft matter physics

Talk for the Trinity Math Society Symposium. First summarises the approximations leading from Dirac equation to molecular description and then the synthesis towards non-equilibrium statistical mechanics. The relaxation approach to projection of a molecular system to a Markov jump process is discussed.

Neuron-computer interface in Dynamic-Clamp experiments

AACIMP 2010 Summer School lecture by Anton Chizhov. "Physics, Chemistry and Living Systems" stream. "Neuron-Computer Interface in Dynamic-Clamp Experiments. Models of Neuronal Populations and Visual Cortex" course. Part 1.
More info at http://summerschool.ssa.org.ua

Speech waves in tube and filters

This lecture discusses properties of digital filters. It defines FIR and IIR filters and relates their power responses to pole-zero diagrams. A 2nd-order resonance's bandwidth is related to pole positions. Bandwidth expansion transforms filters by moving poles inward. Reversing coefficients conjugates a filter's frequency response. Expressions are derived for logarithmic frequency responses and their averages.

Chapter 2 signals and spectra,

The document discusses Fourier analysis techniques. It covers topics like line spectra and Fourier series, including periodic signals and average power. Key aspects covered include phasor representation of sinusoids, convergence conditions of Fourier series, and Parseval's power theorem relating signal power to Fourier coefficients.

Weighted Lasso for Network inference

The document discusses inferring gene regulatory networks from time-course gene expression data. It presents the problem of inferring interactions between genes from high-dimensional and sparse time-course microarray data. It proposes using a Gaussian graphical model and introducing biologically grounded priors, such as sparsity and latent clustering of networks, to help address the scarcity of data. Several statistical models and algorithms are described for performing regularized inference on the networks with and without using a known or inferred latent clustering structure. The methods are evaluated on simulated time-course data and a real E. coli S.O.S DNA repair network.

Kinematika rotasi

1. Position angle (θ) is measured in revolutions, degrees, or radians. Common units include 1 revolution = 360° = 2π radians.
2. Angular displacement (Δθ) is the change in position angle between an initial angle (θ1) and final angle (θ2).
3. Angular velocity (ω) is the rate of change of the angular displacement with respect to time and is measured in radians/second. Average and instantaneous angular velocity can be calculated.

2009 PRE - Simulation of the time evolution of the Wigner function with a fir...

This document describes a Monte Carlo method for simulating the time evolution of the Wigner function. It presents a formalism using a hidden variable representation that allows the full quantum dynamics to be calculated classically. Specifically:
1) It defines a two-state classical system that can describe the time evolution of quasiprobability densities like the Wigner function.
2) It extends this to define a hidden variable stochastic field and associated probability vector that can capture the dynamics of the Wigner function through a renormalization procedure.
3) This allows the use of classical Monte Carlo techniques to simulate the quantum dynamics and obtain phase space information like the Wigner function over time for systems under arbitrary time-dependent potentials.

Autoregression

Autoregression

Causal Dynamical Triangulations

Causal Dynamical Triangulations

An Affine Combination Of Two Lms Adaptive Filters

An Affine Combination Of Two Lms Adaptive Filters

Notes mech v

Notes mech v

12 x1 t04 05 displacement, velocity, acceleration (2012)

12 x1 t04 05 displacement, velocity, acceleration (2012)

Hw4sol

Hw4sol

ML Reading Group (Intro to Quantum Computation)

ML Reading Group (Intro to Quantum Computation)

Quantized and finite reference of frame

Quantized and finite reference of frame

Lecture 2 sapienza 2017

Lecture 2 sapienza 2017

Chemical dynamics and rare events in soft matter physics

Chemical dynamics and rare events in soft matter physics

Neuron-computer interface in Dynamic-Clamp experiments

Neuron-computer interface in Dynamic-Clamp experiments

Speech waves in tube and filters

Speech waves in tube and filters

Chapter 2 signals and spectra,

Chapter 2 signals and spectra,

Weighted Lasso for Network inference

Weighted Lasso for Network inference

Kinematika rotasi

Kinematika rotasi

2009 PRE - Simulation of the time evolution of the Wigner function with a fir...

2009 PRE - Simulation of the time evolution of the Wigner function with a fir...

Neuronal self-organized criticality

1) The document discusses a model of stochastic spiking neural networks where dynamical neuronal gains produce self-organized criticality. Introducing dynamic neuronal gains Γi[t] in addition to dynamic synaptic weights Wij[t] allows the system to self-organize toward a critical region without requiring divergent timescales.
2) For finite recovery timescales τ, the model exhibits self-organized supercriticality (SOSC) where the average neuronal gain Γ* is always slightly above critical. SOSC may help explain biological phenomena like large avalanches and epileptic activity.
3) The model provides a new framework to study self-organized phenomena in neuronal networks, including potential analytic solutions and

Mechanical_vibration_basics_and_single_d.pptx

The document provides an overview of vibration mitigation techniques and fundamentals of vibration analysis. It discusses topics like single degree of freedom systems, free and forced vibration, damped and undamped systems, types of damping, and vibration isolation. It also describes modeling approaches like single degree of freedom, multi degree of freedom, and continuous systems. Specific examples covered include free vibration of particles, simple pendulum motion, springs in combinations, and logarithmic decrement calculation for damped systems.

Wave Motion Theory Part1

JEE Physics/ Lakshmikanta Satapathy/ Wave Motion Theory/ Formation of a wave/ Wave function/ Condition for wave function/ Particle velocity and slope/ Sinusoidal wave function/ Illustrative example

The Analytical/Numerical Relativity Interface behind Gravitational Waves: Lec...

The Analytical/Numerical Relativity Interface behind Gravitational Waves: Lec...Lake Como School of Advanced Studies

Alessandra Buonanno gave a lecture on the analytical and numerical relativity approaches used to model gravitational waveforms from inspiraling binary systems. She discussed how post-Newtonian theory, effective one body theory, and numerical relativity are used to approximately and exactly solve Einstein's field equations. She emphasized the crucial synergy between analytical and numerical relativity approaches to develop accurate gravitational waveform models like EOBNR and Phenom that have been used to infer astrophysics from LIGO/Virgo detections.physics430_lecture01.ppt

Learn about mechanics. How do objects move. Why is relative motion and how is it applied to every day life. What happens when a car crashes.

The photon and its momentum

There is an ongoing debate about the momentum of a photon in a medium, with two main perspectives proposed by Abraham and Minkowski. An experiment is proposed to help resolve this using a Bose-Einstein condensate with a very high refractive index acting as the "medium" and measuring any displacement. Previous experiments involving bouncing light off mirrors attached to torsion balances produced results consistent with both Abraham and Minkowski, not resolving the debate. The topic has been discussed by many prominent physicists over decades without a clear consensus emerging.

The computational limit_to_quantum_determinism_and_the_black_hole_information...

The document discusses the limits of quantum determinism and its implications for the black hole information paradox. It argues that assuming the Strong Exponential Time Hypothesis (SETH), which conjectures that known algorithms for solving computational NP-complete problems are optimal, quantum determinism cannot generally be used to predict the future state of a physical system, especially macroscopic systems. This is because even if the initial state were known precisely, it may be impossible in the real world to solve the system's Schrodinger equation in time to predict its final state before an observation. The breakdown of quantum determinism in black hole formation and evaporation may support SETH and help resolve the black hole information paradox.

Dynamical heterogeneity and structural relaxation in periodically deformed po...

1) Molecular dynamics simulations were conducted of a polymer glass under oscillatory shear strain with varying amplitudes.
2) At small strain amplitudes, the polymer glass undergoes nearly reversible deformation over thousands of cycles. At a critical strain amplitude, there is a transition to faster relaxation dynamics.
3) The size of clusters of mobile monomers increases with higher strain amplitudes. Unlike in steadily sheared systems, these mobile monomers aggregate into intermittent bursts of large clusters under oscillatory shear.

8792022.ppt

This document provides an overview of neutron transport concepts and the transport equation. It begins with introductory concepts like neutron density, flux, current and reaction rate. It then derives the Boltzmann transport equation, which describes the balance of neutrons in a system. Key terms in the transport equation include the scattering kernel, destruction operator, and production operators for fission and delayed neutrons. Solutions to the transport equation provide critical information for nuclear reactor design and operation.

Structural Dynamics - SDOF

1) The document introduces single-degree-of-freedom (SDOF) structural dynamics systems. SDOF systems have a single mass that translates or rotates in one direction.
2) Basic concepts are discussed including degrees of freedom, Newton's second law, and the equation of motion for an SDOF system with an external force or base excitation.
3) Solutions to the equation of motion are explored for undamped free vibration and undamped forced vibration cases. The solution for undamped free vibration takes the form of simple harmonic motion.

Hot topics in actual neutrino physics - Seminar in Particle Physics at LMU

This document discusses neutrino physics and oscillations. It begins with a brief introduction and table of contents. It then covers the history of neutrino research, the theoretical framework of neutrino oscillations in vacuum and 3 generations, and mass generation mechanisms. One section focuses on the Mikheyev–Smirnov–Wolfenstein (MSW) effect, which describes how neutrino oscillations are affected by matter. The document provides explanations and answers questions to concisely summarize key topics in neutrino physics.

Stochastic Processes - part 2

"stochastic Processes" graduate course.
Lecture notes of Prof. H.Amindavar.
Professor of Electrical engineering at Amirkabir university of technology.

La fisica dei motori molecolari

The document discusses the physics of molecular motors and fluctuations in small engines. It covers topics like noise rectification mechanisms that allow directed motion from thermal fluctuations in biological motors like myosin and kinesin. Brownian motion results in efficient but random transport, while molecular motors achieve very efficient directed transport through mechanisms like thermal ratchets that can rectify thermal fluctuations through asymmetric potentials or periodic driving. The document also discusses applications to areas like biology-inspired nano-devices and single molecule experiments.

22PH102_ISE_U2_LP1_-_Notes.pdf

The document discusses simple harmonic motion (SHM). SHM describes the motion of an object undergoing periodic motion where the restoring force is directly proportional to the displacement from equilibrium. Examples of SHM include a block attached to a spring and vibrating musical strings. The motion can be modeled mathematically using Hooke's law and expressed as a sinusoidal function of time. Key characteristics of SHM include the period, frequency, amplitude, and phase of the oscillations. Graphs of position, velocity, and acceleration versus time for an object in SHM are also sinusoidal.

Hodgkin-Huxley & the nonlinear dynamics of neuronal excitability

The document discusses the Hodgkin-Huxley model of neuronal excitability and its analysis using nonlinear dynamics and phase plane methods. It describes how the Hodgkin-Huxley model dissects the action potential into fast and slow processes. It also discusses models of repetitive and phasic firing, including the Morris-Lecar model, and references software tools for neuronal modeling and simulation.

Fourth unittheory

The document discusses forced vibration in mechanical systems. It defines forced vibration as vibration under the influence of external forces. Periodic, harmonic forcing causes steady state vibration with constant amplitude. Common sources of periodic forcing include unbalanced rotating or reciprocating masses. The response of a system to periodic forcing contains components at both the forcing frequency and the natural frequency. Over time, the natural frequency response dies out, leaving only the steady state response at the forcing frequency.

String theory basics

In tis slide, an introduction to string theory has been given. Apart from that, a simple proof of 26 dimensions of bosonic string theory is given (following Zwiebach's approach).
I explained this presentation in two parts (on my YouTube channel). Here are the links
_______________________________________________
Part 1
https://www.youtube.com/watch?v=QQA4JQ6Y-eo&list=PLDpqC3uXLZGl0cDod6g30PcjeJ4DAZWhp
_______________________________________________
Part 2
https://www.youtube.com/watch?v=vhLCtLn79jE&list=PLDpqC3uXLZGl0cDod6g30PcjeJ4DAZWhp&index=2
_______________________________________________

small oscillations.pdf

The document summarizes key concepts in classical dynamics related to small amplitude oscillations. It discusses:
1) Equilibrium and its types including static, dynamic, stable, unstable, and metastable equilibrium.
2) How potential energy minima correspond to points of stable equilibrium and small amplitude oscillations occur about these minima.
3) How the stability of a simple pendulum depends on the second derivative of its potential energy function.
4) The general problem of small oscillations is formulated by expanding the potential and kinetic energy functions as Taylor series about the equilibrium points and deriving the equations of motion.
5) The eigen value problem and normalization of the equations of motion allows representing the oscillations as a super

g-lecture.pptx

This document provides an introduction to group theory with applications to quantum mechanics and solid state physics. It begins with definitions of groups and examples of groups that are important in physics. It then discusses several applications of group theory in classical mechanics, quantum mechanics, and solid state physics. Specifically, it explains how group theory can be used to evaluate matrix elements, understand degeneracies of energy eigenvalues, classify electronic states in periodic potentials, and construct models that respect crystal symmetries. It also briefly discusses the use of group theory in nuclear and particle physics.

Real-time electron dynamics: from non-linear response to pump and probe spect...

Real-time electron dynamics: from non-linear response to pump and probe spectroscopy

Neuronal self-organized criticality

Neuronal self-organized criticality

Mechanical_vibration_basics_and_single_d.pptx

Mechanical_vibration_basics_and_single_d.pptx

Wave Motion Theory Part1

Wave Motion Theory Part1

The Analytical/Numerical Relativity Interface behind Gravitational Waves: Lec...

The Analytical/Numerical Relativity Interface behind Gravitational Waves: Lec...

physics430_lecture01.ppt

physics430_lecture01.ppt

The photon and its momentum

The photon and its momentum

The computational limit_to_quantum_determinism_and_the_black_hole_information...

The computational limit_to_quantum_determinism_and_the_black_hole_information...

Dynamical heterogeneity and structural relaxation in periodically deformed po...

Dynamical heterogeneity and structural relaxation in periodically deformed po...

8792022.ppt

8792022.ppt

Structural Dynamics - SDOF

Structural Dynamics - SDOF

Hot topics in actual neutrino physics - Seminar in Particle Physics at LMU

Hot topics in actual neutrino physics - Seminar in Particle Physics at LMU

Stochastic Processes - part 2

Stochastic Processes - part 2

La fisica dei motori molecolari

La fisica dei motori molecolari

22PH102_ISE_U2_LP1_-_Notes.pdf

22PH102_ISE_U2_LP1_-_Notes.pdf

Hodgkin-Huxley & the nonlinear dynamics of neuronal excitability

Hodgkin-Huxley & the nonlinear dynamics of neuronal excitability

Fourth unittheory

Fourth unittheory

String theory basics

String theory basics

small oscillations.pdf

small oscillations.pdf

g-lecture.pptx

g-lecture.pptx

Real-time electron dynamics: from non-linear response to pump and probe spect...

Real-time electron dynamics: from non-linear response to pump and probe spect...

Modelo de-formacao

Este documento apresenta um modelo computacional para a formação de enxames de mosquitos baseado somente na densidade local de insetos. O modelo mostra que interações baseadas apenas em densidade são suficientes para a formação de enxames, ao contrário de modelos anteriores baseados na interação de vetores de velocidade. O modelo indica uma possível transição de fase contínua perto de um parâmetro de controle igual a 1, que pode descrever o comportamento observado em enxames reais.

SOC neunoral networks

This document summarizes a presentation on self-organized criticality and neuronal avalanches in networks with dynamical synapses. It discusses how synaptic depression can tune networks to a critical state in a non-conservative model. The model uses a probabilistic cellular automata on a random graph with synaptic depression, which slowly loads the system. Mean-field theory and simulations show the branching ratio converges to unity, making the system conservative on average. Analysis of neuronal interspike interval distributions in different regimes is proposed to further understand the model's behavior.

Fermi Paradox

This document summarizes a model of galaxy colonization and tumor growth based on percolation and invasion processes. The model uses a single parameter β to represent the difficulty of diffusion/spreading, with higher β meaning greater difficulty. For subcritical values of β, civilizations/cancer cells exist but would never reach the Earth/healthy cells. Supercritical values lead to fractal-like patterns with gaps of all sizes. The model can explain Fermi's Paradox without assumptions about alien psychology and shows that colonization/growth is non-uniform, resembling the distribution of human settlements on Earth. While simple, the model could be expanded to consider additional realistic factors.

Gastronofísica

O documento apresenta uma pesquisa pioneira sobre a aplicação da Física Estatística na culinária, chamada de Gastronofísica. Estudou padrões estatísticos em redes de receitas e ingredientes em livros de culinária de diferentes culturas, e propôs um modelo de cópia e mutação que explicou os dados observados.

Homeostatic criticality

This document summarizes a presentation on homeostatic criticality in stochastic integrate-and-fire neurons. It discusses three main homeostatic mechanisms: homeostatic synapses modeled by NK equations, homeostatic neuronal gains modeled by N gain equations, and homeostatic firing thresholds. It also describes discrete time stochastic integrate-and-fire neuron and firing function models. The presentation proposes that Markov-Tsodyks and Levina-Hermann-Geisel synaptic dynamics are sufficient but not necessary mechanisms for homeostatic criticality. It further discusses how stochastic oscillations and avalanches can emerge with homeostatic neuronal gain and how the homeostatic set point exists as a focus close to the critical point, with finite size noise causing the system to hover

Criatividade

O documento fornece estratégias para desenvolver a criatividade, como ter sempre um papel e caneta, compartilhar ideias com outros profissionais, praticar esportes regularmente, se desconectar das redes sociais, ler diversos assuntos, manter uma lista de tarefas organizada, estar atento ao ambiente, diversificar os projetos, fazer pausas, não parar de aprender e não se abater com falhas.

Homeostatic criticality in stochastic integrate-and-fire neurons

This document summarizes a talk on homeostatic criticality in stochastic integrate-and-fire neurons. It discusses three main homeostatic mechanisms: homeostatic synapses, neuronal gains, and firing thresholds. It presents models for homeostatic synapses including the Markram-Tsodyks and Levina-Hermann-Geisel models. It also discusses a discrete-time stochastic integrate-and-fire neuron model and firing rate functions. The document argues that while the Markram-Tsodyks and Levina-Hermann-Geisel dynamics are sufficient mechanisms for criticality, they are not necessary. It proposes a homeostatic set point in the system's parameters that acts as an attractor, keeping the system near

É possível prever o Prêmio Nobel?

O documento discute a previsão de prêmios Nobel usando métricas bibliométricas. Propõe um novo índice chamado K que mede o impacto científico pelo fato de um artigo ser citado por trabalhos importantes. Compara o índice K com o índice h de Hirsch e mostra que o K correlaciona melhor com a seleção de ganhadores reais do Prêmio Nobel de Física de 2016. Discute também limitações e próximos passos para validar o índice K.

Um modelo de colonização da Galáxia que também é um modelo de crescimento de ...

Este documento apresenta um modelo de colonização galáctica baseado no processo de percolação por invasão, similar ao crescimento de tumores. O modelo utiliza um único parâmetro, a dificuldade de difusão β, para simular a distribuição não uniforme de colônias/células cancerígenas ao longo do tempo. Quanto maior o valor de β, menor a taxa de colonização/crescimento tumoral e maiores os "buracos" sem ocupação.

A double homeostatic mechanism to get self-organized quasi-criticality

This document discusses several papers related to self-organized criticality in neural networks. It begins by summarizing Turing's 1950 speculation that subcritical, critical, and slightly supercritical branching processes could describe human and animal minds. It then discusses later work in 1995 and 2003 providing experimental support for the idea that neural networks operate near a critical point, enhancing information processing. The document proposes a new mechanism for achieving criticality - dynamic neuronal gains related to firing rate adaptation - instead of mechanisms related to synaptic dynamics studied previously. It concludes by discussing a 2020 paper finding that inhibitory synaptic depression and firing threshold adaptation can lead a neural network model to hover near criticality in a self-organized quasicritical state, maintaining synaptic balance.

Faith, Science and Science Fiction

O documento discute a relação entre ciência, religião e ficção científica de três formas:
1) A ficção científica pode inspirar novas visões teológicas e filosóficas, como o Design Inteligente e teorias sobre extraterrestres influenciarem religiões.
2) Algumas crenças religiosas populares, como a Terra plana, conflitam com a ciência quando levadas literalmente.
3) Há uma terceira via entre teísmo e ateísmo que especula cientificamente sobre a possibil

Philosophy of science and science of philosophy

O documento discute a relação entre filosofia da ciência e ciência da filosofia. Apresenta brevemente as visões de Popper, Kuhn, Lakatos e Feyrabend sobre racionalidade científica e revoluções científicas. Argumenta que ideias computacionais como redes neurais, algoritmos genéticos e modelos de dinâmica de avalanches podem ajudar a entender essas visões filosóficas, evitando críticas comuns.

Ciência e Técnica no Antigo Testamento

O documento discute como o Antigo Testamento aborda ciência, tecnologia e conhecimento. Ele mostra que o AT valoriza o conhecimento e habilidades como arquitetura, engenharia e medicina. Também discute a sabedoria de figuras como Salomão e como alguns livros como Jó, Provérbios e Eclesiastes encorajam o estudo da natureza.

Quarta revolução industrial

O documento discute as ciências da complexidade e como elas promovem uma nova maneira de conceituar a economia, a sociedade e a história através de novas metáforas cognitivas, como sistemas complexos auto-organizados e críticos. As ciências da complexidade também mostram que eventos históricos podem ser vistos como avalanches em cascata e que não há eventos típicos, apenas imprevisibilidade em alta dimensão.

Itinerância caótica como modelo de dinâmica da consciência

Este documento discute um modelo de dinâmica da consciência baseado em itinerância caótica entre atratores representando memórias associativas em redes neurais. O modelo propõe que a consciência é composta por transições não determinísticas entre estados mentais representados por atratores em um espaço de configuração neural. A itinerância caótica entre esses estados permite que a consciência se desloque de forma imprevisível, similarmente ao "fluxo da consciência" descrito por William James.

The exoplanets analogy to the Multiverse

O documento discute a analogia entre exoplanetas e o multiverso para explicar o problema do ajuste fino nos parâmetros do Universo. Apresenta três motivos para se pensar em um multiverso e sugere que o ajuste fino no Universo, assim como em planetas, pode ser explicado pela existência de muitos outros universos, da mesma forma que a habitabilidade da Terra implica a existência de muitos exoplanetas.

Modelo de-formacao

Modelo de-formacao

SOC neunoral networks

SOC neunoral networks

Fermi Paradox

Fermi Paradox

Gastronofísica

Gastronofísica

Homeostatic criticality

Homeostatic criticality

Criatividade

Criatividade

Homeostatic criticality in stochastic integrate-and-fire neurons

Homeostatic criticality in stochastic integrate-and-fire neurons

É possível prever o Prêmio Nobel?

É possível prever o Prêmio Nobel?

Um modelo de colonização da Galáxia que também é um modelo de crescimento de ...

Um modelo de colonização da Galáxia que também é um modelo de crescimento de ...

A double homeostatic mechanism to get self-organized quasi-criticality

A double homeostatic mechanism to get self-organized quasi-criticality

Faith, Science and Science Fiction

Faith, Science and Science Fiction

Philosophy of science and science of philosophy

Philosophy of science and science of philosophy

Ciência e Técnica no Antigo Testamento

Ciência e Técnica no Antigo Testamento

Quarta revolução industrial

Quarta revolução industrial

Itinerância caótica como modelo de dinâmica da consciência

Itinerância caótica como modelo de dinâmica da consciência

The exoplanets analogy to the Multiverse

The exoplanets analogy to the Multiverse

Gametogenesis: Male gametes Formation Process / Spermatogenesis .pdf

This pdf is about the Gametogenesis: Male gametes Formation Process / Spermatogenesis .
For more details visit on YouTube; @SELF-EXPLANATORY; https://www.youtube.com/channel/UCAiarMZDNhe1A3Rnpr_WkzA/videos
Thanks...!

Review Article:- A REVIEW ON RADIOISOTOPES IN CANCER THERAPY

A REVIEW ON RADIOISOTOPES IN CANCER THERAPY

Possible Anthropogenic Contributions to the LAMP-observed Surficial Icy Regol...

This work assesses the potential of midsized and large human landing systems to deliver water from their exhaust
plumes to cold traps within lunar polar craters. It has been estimated that a total of between 2 and 60 T of surficial
water was sensed by the Lunar Reconnaissance Orbiter Lyman Alpha Mapping Project on the floors of the larger
permanently shadowed south polar craters. This intrinsic surficial water sensed in the far-ultraviolet is thought to be
in the form of a 0.3%–2% icy regolith in the top few hundred nanometers of the surface. We find that the six past
Apollo Lunar Module midlatitude landings could contribute no more than 0.36 T of water mass to this existing,
intrinsic surficial water in permanently shadowed regions (PSRs). However, we find that the Starship landing
plume has the potential, in some cases, to deliver over 10 T of water to the PSRs, which is a substantial fraction
(possibly >20%) of the existing intrinsic surficial water mass. This anthropogenic contribution could possibly
overlay and mix with the naturally occurring icy regolith at the uppermost surface. A possible consequence is that
the origin of the intrinsic surficial icy regolith, which is still undetermined, could be lost as it mixes with the
extrinsic anthropogenic contribution. We suggest that existing and future orbital and landed assets be used to
examine the effect of polar landers on the cold traps within PSRs

Direct instructions, towards hundred fold yield,layering,budding,grafting,pla...

Fertility, plants, layering, growth, health of seeds

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Phytoremediation: Harnessing Nature's Power with Phytoremediation

This document provides an overview of phytoremediation, which uses plants to remove contaminants from soil, sediment, or water. It discusses the need for new remediation techniques, describes various phytoremediation processes like phytoextraction and rhizofiltration, and covers important concepts like hyperaccumulators, biotechnology applications, case studies, and advantages/limitations. The author aims to explain the mechanisms, history, types of plants used, and future research directions of this eco-friendly approach to environmental cleanup.

Pancreas_functional anatomy_enzymes.pptx

Pancreas functional anatomy

Types of Hypersensitivity Reactions.pptx

Hypersensitivity as an immunological dysfunction is defined as exaggerated or inappropriate response of the immune system. Hypersensitivity can be classified into four types; namely, type I (Immediate), type II (antibody-mediated), type III (immune complex-mediated), and type IV (cell-mediated or delayed-type) hypersensitivity.
Type I hypersensitivity or allergy, the most common immune disorder, is mainly mediated by immunoglobulin (Ig)E and mast cells. It can cause anaphylaxis, food allergy, and asthma.
Type II hypersensitivity can lead to tissue damage by three main mechanisms: (1) direct cellular destruction (e.g., autoimmune hemolytic anemia and immune thrombocytopenia, (2) inflammation (e.g., Goodpasture's syndrome and acute rheumatic fever), and (3) disrupting cellular function (e.g., myasthenia gravis and Graves’ disease).
Type III hypersensitivity is caused by excess production of immune complexes or impaired clearance of them and includes serum sickness, systemic lupus erythematosus, and post-streptococcal glomerulonephritis.
Type IV hypersensitivity is mediated by T cells and macrophages, causing diseases like multiple sclerosis and rheumatoid arthritis.

Classification and role of plant nutrients - Roxana Madjar

Classification and role of plant nutrients - Roxana MadjarFaculty of Applied Chemistry and Materials Science

Classification and role of plant nutrients
Roxana Madjar, University of Agronomic Sciences and Veterinary Medicine (USAMV), Romania
Introduction to Space (Our Solar System)

Space is tremendous, apparently endless span that exists past earth and its environment. It is a locale up with endless heavenly bodies,
including stars, planets, moons, space rocks, and comets, all represented by the gravity. Space investigation has extended how we might interpret the universe, uncovering the excellence and intricacy of far off cosmic system, the secret of dark openings, and the potential for life past our planet. An outskirts keeps of motivating interest, logical request, and a feeling of marvel about our spot in the universe. Space is immense, largely unexplored expanse beyond Earth's atmosphere, home to countless celestial bodies likes stars, planets, and asteroids. Human exploration began with the launch of Sputnik in 1957 followed by significant achievements such as the Moon landing in 1969.

Concept of Balanced Diet & Nutrients.pdf

This pdf is about the introduction to concept of Balanced Diet & Nutrients.
For more details visit on YouTube; @SELF-EXPLANATORY; https://www.youtube.com/channel/UCAiarMZDNhe1A3Rnpr_WkzA/videos
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Rapid pulse drying of marine biomasses - Sigurd Sannan

Rapid pulse drying of marine biomasses - Sigurd SannanFaculty of Applied Chemistry and Materials Science

Rapid pulse drying of marine biomasses
Sigurd Sannan, SINTEF Energi AS, NorwayAlgaeBrew project - Unlocking the potential of microalgae for the valorisatio...

AlgaeBrew project - Unlocking the potential of microalgae for the valorisatio...Faculty of Applied Chemistry and Materials Science

AlgaeBrew project - Unlocking the potential of microalgae for the valorisation of brewery waste products into omega-3 rich animal feed and fertilisers
Carmen Gabriela Constantin, University of Agronomic Sciences and Veterinary Medicine (USAMV), RomaniaSimulations of pulsed overpressure jets: formation of bellows and ripples in ...

Jets from active nuclei may supply the heating which moderates cooling and accretion from the circum-galactic medium. While
steady overpressured jets can drive a circulatory flow, lateral energy transfer rarely exceeds 3 per cent of jet power, after the initial
bow shock has advanced. Here, we explore if pulses in high-pressure jets are capable of sufficient lateral energy transfer into
the surrounding environment. We answer this by performing a systematic survey of numerical simulations in an axisymmetric
hydrodynamic mode. Velocity pulses along low Mach jets are studied at various overpressures. We consider combinations of
jet velocity pulse amplitude and frequency. We find three flow types corresponding to slow, intermediate, and fast pulsations.
Rapid pulsations in light jets generate a series of travelling shocks in the jet. They also create ripples which propagate into the
ambient medium while a slow convection flow brings in ambient gas which is expelled along the jet direction. Long period pulses
produce slowly evolving patterns which have little external effect, while screeching persists as in non-pulsed jets. In addition,
rapid pulses in jets denser than the ambient medium generate a novel breathing cavity analogous to a lung. Intermediate period
pulses generate a series of bows via a bellows action which transfer energy into the ambient gas, reaching power efficiencies of
over 30 per cent when the jet overpressure issufficiently large. This may adequately inhibit galaxy gas accretion. In addition,such
pulses enhance the axial out-flow of jet material, potentially polluting the circum-galactic gas with metal-enriched interstellar
gas.

Testing the Son of God Hypothesis (Jesus Christ)

Instead of answering the God hypothesis, we investigate the Son of God hypothesis. We developed our own methodology to deal with existential statements instead of universal statements unlike science. We discuss the existence of the supernaturals and found that there are strong evidence for it. Given that supernatural exists, we report on miracles investigated in the past related to the Son of God. A Bayesian methodology is used to calculate the combined degree of belief of the Son of God Hypothesis. We also report the testing of occurrences of words/numbers in the Bible to suggest the likelihood of some special numbers occurring, supporting the Son of God Hypothesis. We also have a table showing the past occurrences of miracles in hundred year periods for about 1000 years. Miracles that we have looked at include Shroud of Turin, Eucharistic Miracles, Marian Apparitions, Incorruptible Corpses, etc.

Complementary interstellar detections from the heliotail

The heliosphere is a protective shield around the solar system created by the Sun’s interaction with the local interstellar medium (LISM) through the solar wind, transients, and interplanetary magnetic field. The shape of the heliosphere is directly linked with interactions with the surrounding LISM, in turn affecting the space environment within the heliosphere. Understanding the shape of the heliosphere, the LISM properties, and their interactions is critical for understanding the impacts within the solar system and for understanding other astrospheres. Understanding the shape of the heliosphere requires an understanding of the heliotail, as the shape is highly dependent upon the heliotail and its LISM interactions. The heliotail additionally presents an opportunity for more direct in situ measurement of interstellar particles from within the heliosphere, given the likelihood of magnetic reconnection and turbulent mixing between the LISM and the heliotail. Measurements in the heliotail should be made of pickup ions, energetic neutral atoms, low energy neutrals, and cosmic rays, as well as interstellar ions that may be injected into the heliosphere through processes such as magnetic reconnection, which can create a direct magnetic link from the LISM into the heliosphere. The Interstellar Probe mission is an ideal opportunity for measurement either along a trajectory passing through the heliotail, via the flank, or by use of a pair of spacecraft that explore the heliosphere both tailward and noseward to yield a more complete picture of the shape of the heliosphere and to help us better understand its interactions with the LISM.

The Dynamical Origins of the Dark Comets and a Proposed Evolutionary Track

So-called ‘dark comets’ are small, morphologically inactive near-Earth objects
(NEOs) that exhibit nongravitational accelerations inconsistent with radiative
effects. These objects exhibit short rotational periods (minutes to hours), where
measured. We find that the strengths required to prevent catastrophic disintegration are consistent with those measured in cometary nuclei and expected in
rubble pile objects. We hypothesize that these dark comets are the end result
of a rotational fragmentation cascade, which is consistent with their measured
physical properties. We calculate the predicted size-frequency distribution for
objects evolving under this model. Using dynamical simulations, we further
demonstrate that the majority of these bodies originated from the 𝜈6
resonance,
implying the existence of volatiles in the current inner main belt. Moreover, one of
the dark comets, (523599) 2003 RM, likely originated from the outer main belt,
although a JFC origin is also plausible. These results provide strong evidence
that volatiles from a reservoir in the inner main belt are present in the near-Earth
environment.

Gametogenesis: Male gametes Formation Process / Spermatogenesis .pdf

Gametogenesis: Male gametes Formation Process / Spermatogenesis .pdf

Review Article:- A REVIEW ON RADIOISOTOPES IN CANCER THERAPY

Review Article:- A REVIEW ON RADIOISOTOPES IN CANCER THERAPY

Possible Anthropogenic Contributions to the LAMP-observed Surficial Icy Regol...

Possible Anthropogenic Contributions to the LAMP-observed Surficial Icy Regol...

Direct instructions, towards hundred fold yield,layering,budding,grafting,pla...

Direct instructions, towards hundred fold yield,layering,budding,grafting,pla...

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Phytoremediation: Harnessing Nature's Power with Phytoremediation

Phytoremediation: Harnessing Nature's Power with Phytoremediation

Pancreas_functional anatomy_enzymes.pptx

Pancreas_functional anatomy_enzymes.pptx

Types of Hypersensitivity Reactions.pptx

Types of Hypersensitivity Reactions.pptx

Classification and role of plant nutrients - Roxana Madjar

Classification and role of plant nutrients - Roxana Madjar

[1] Data Mining - Concepts and Techniques (3rd Ed).pdf

[1] Data Mining - Concepts and Techniques (3rd Ed).pdf

Introduction to Space (Our Solar System)

Introduction to Space (Our Solar System)

Concept of Balanced Diet & Nutrients.pdf

Concept of Balanced Diet & Nutrients.pdf

SCIENCEgfvhvhvkjkbbjjbbjvhvhvhvjkvjvjvjj.pptx

SCIENCEgfvhvhvkjkbbjjbbjvhvhvhvjkvjvjvjj.pptx

Rapid pulse drying of marine biomasses - Sigurd Sannan

Rapid pulse drying of marine biomasses - Sigurd Sannan

AlgaeBrew project - Unlocking the potential of microalgae for the valorisatio...

AlgaeBrew project - Unlocking the potential of microalgae for the valorisatio...

Simulations of pulsed overpressure jets: formation of bellows and ripples in ...

Simulations of pulsed overpressure jets: formation of bellows and ripples in ...

Testing the Son of God Hypothesis (Jesus Christ)

Testing the Son of God Hypothesis (Jesus Christ)

Complementary interstellar detections from the heliotail

Complementary interstellar detections from the heliotail

The Dynamical Origins of the Dark Comets and a Proposed Evolutionary Track

The Dynamical Origins of the Dark Comets and a Proposed Evolutionary Track

ellipticytescausesprognosistreatment-240622051139-23d50b05.pptx

ellipticytescausesprognosistreatment-240622051139-23d50b05.pptx

- 1. Criticalidade Auto-organizada Osame Kinouchi - Departamento de Física - FFCLRP - USP
- 3. A analogia da pilha de areia
- 4. O modelo Bak-Tang-Wisenfeld (BTW) de pilha de areia (1987)
- 5. Distribuições de tamanho de avalanches
- 6. Experimento de Oslo da pilha de arroz (1996)
- 7. SOC em terremotos Lei de Gutemberg-Richter
- 8. SOC em erupções solares
- 10. Allan Turing (1950) Computing machinery and intelligence. Mind 59: 433-460. “Another simile would be an atomic pile of less than critical size: an injected idea is to correspond to a neutron entering the pile from without. Each such neutron will cause a certain disturbance which eventually dies away. If, however, the size of the pile is sufficiently increased, the disturbance caused by such an incoming neutron will very likely go on and on increasing until the whole pile is destroyed. Is there a corresponding phenomenon [criticality] for minds, and is there one for machines? There does seem to be one for the human mind. The majority of them seems to be subcritical, i.e., to correspond in this analogy to piles of subcritical size. An idea presented to such a mind will on average give rise to less than one idea in reply. A smallish proportion are supercritical. An idea presented to such a mind may give rise to a whole "theory" consisting of secondary, tertiary and more remote ideas. (...) Adhering to this analogy we ask, "Can a machine be made to be supercritical?"
- 11. Avalanches neuronais Beggs e Plenz (2003)
- 12. Avalanches neuronais: dados e modelos
- 13. Modelo com neurônios integra- dispara escolásticos (2016) Xj = 0 (repouso) Xj = 1 (disparo) Vi[t+1] = μ Vi[t] + ∑ Wij Xj[t] se Xj[t] = 0 Vi[t+1] = 0 se Xj[t] = 1 P( Xi[t+1] =1 ) = ɸ(Vi[t])
- 14. Função de disparo ɸ(V) com transição de fase de segunda ordem
- 15. μ = 0, linear saturating case r = 1, VT = 0 (Larremore et al., PRL 2014) But they do not report phase transitions 15 • Case r = 1, solve for 0 < ρ <1/2: ρ = [𝚪(I + Wρ − VT)] (1 − ρ) or: 𝚪W ρ2 + (1 − 𝚪W + 𝚪I − 𝚪VT) ρ + 𝚪VT − 𝚪I = 0 • Solutions: • Continuous and discontinuous phase transitions here Φ V
- 17. Ganhos neuronais 𝚪i(t) dinâmicos se auto- organizam na região crítica 𝚪i [t+1] = 𝚪i [t] + 1/𝞽 ( A - 𝚪i [t] ) - u 𝚪i [t] Xi [t] 𝚪c
- 18. Critíticalidade e super-criticalidade em avalanches neuronais 𝞽 = 100 ms, u = 1 𝚪* = 1.001 𝞽 = 1000 ms, u = 1 𝚪* = 1.0001 𝚪* = (𝚪c - Ax)/(1+x) x = 1/(u𝞽) → 1/N
- 19. Evidencia de supercriticalidade neuronal Shaukat & Thivierge, 2016 Front. Comput. Neurosci. 10:29
- 20. Vantagem de redes neuronais críticas: máxima faixa dinâmica 20
- 21. Scientific Reports 6: 35831 (2016) 21
- 22. Collaborators at NEUROMAT 22 Ludmila Brochini Jorge Stolfi Ariadne A. Costa Antônio C. Roque Mauro Copellihttp://neuromat.numec.prp.usp.br/team
- 23. Outros exemplos: dinâmica extremal Percolação por invasão (1983) David Wilkinson and Jorge F Willemsen, "Invasion percolation: a new form of percolation theory", J. Phys. A: Math. Gen. 16 (1983) 3365–3376.
- 24. Modelo de evolução de Bak-Sneppen (1993)