Results 31 to 40 of about 499,314 (280)

Optimal approximation model of autocorrelation function of digital image

open access: yesTongxin xuebao, 2011
Non-stationary stochastic signal was divided into piecewise stationary stochastic signal,and reflecting the sig-nal’s characteristics by autocorrelation function of the piecewise stationary stochastic signal.Generally,the autocorrela-tion function was ...
CHENG Xiao-gang1   +4 more
doaj   +2 more sources

Implicit Approximation of Photovoltaic Panel Characteristics Using a Stochastic Approach

open access: yesAdvances in Electrical and Computer Engineering, 2012
In this article, an original system is described for an implicit approximation of photovoltaic panel characteristics. Photovoltaic panels (PV panel) are considered stochastic systems.
ZAPLATILEK, K., LEUCHTER, J.
doaj   +1 more source

Variational Characterization of Free Energy: Theory and Algorithms

open access: yesEntropy, 2017
The article surveys and extends variational formulations of the thermodynamic free energy and discusses their information-theoretic content from the perspective of mathematical statistics.
Carsten Hartmann   +3 more
doaj   +1 more source

Simulation of stochastic network dynamics via entropic matching

open access: yes, 2013
The simulation of complex stochastic network dynamics arising, for instance, from models of coupled biomolecular processes remains computationally challenging.
Enßlin, Torsten A.   +3 more
core   +1 more source

On Consensus-Based Distributed Blind Calibration of Sensor Networks

open access: yesSensors, 2018
This paper deals with recently proposed algorithms for real-time distributed blind macro-calibration of sensor networks based on consensus (synchronization). The algorithms are completely decentralized and do not require a fusion center.
Miloš S. Stanković   +4 more
doaj   +1 more source

Control problem for the impulse process under stochastic optimization procedure and Levy conditions

open access: yesМатематичні Студії, 2021
A stochastic approximation procedure and a limit generator of the original problem are constructed for a system of stochastic differential equations with Markov switching and impulse perturbation under Levy approximation conditions with control, which is
Ya. M. Chabanyuk   +2 more
doaj   +1 more source

Time after time – circadian clocks through the lens of oscillator theory

open access: yesFEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo   +2 more
wiley   +1 more source

Model-Free Trajectory Optimisation for Unmanned Aircraft Serving as Data Ferries for Widespread Sensors

open access: yesRemote Sensing, 2012
Given multiple widespread stationary data sources such as ground-based sensors, an unmanned aircraft can fly over the sensors and gather the data via a wireless link. Performance criteria for such a network may incorporate costs such as trajectory length
Ben Pearre, Timothy X. Brown
doaj   +1 more source

Aggressive prostate cancer is associated with pericyte dysfunction

open access: yesMolecular Oncology, EarlyView.
Tumor‐produced TGF‐β drives pericyte dysfunction in prostate cancer. This dysfunction is characterized by downregulation of some canonical pericyte markers (i.e., DES, CSPG4, and ACTA2) while maintaining the expression of others (i.e., PDGFRB, NOTCH3, and RGS5).
Anabel Martinez‐Romero   +11 more
wiley   +1 more source

Explicit order 3/2 Runge-Kutta method for numerical solutions of stochastic differential equations by using Itô-Taylor expansion

open access: yesOpen Mathematics, 2019
This paper aims to present a new pathwise approximation method, which gives approximate solutions of order 32$\begin{array}{} \displaystyle \frac{3}{2} \end{array}$ for stochastic differential equations (SDEs) driven by multidimensional Brownian motions.
Alhojilan Yazid
doaj   +1 more source

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