Results 11 to 20 of about 907,841 (343)

Application neural network approach for the estimation of heavy metal concentrations in the Inaouen watershed

open access: yesJournal of Environmental Engineering and Landscape Management, 2022
This paper describes how the multilayer perceptron neural network (MLPNN) trained by the Broyden-Fletcher-Goldfarb-Shanno (BFGS) quasi-newton back-propagation approach was used to estimate heavy metal concentrations: Aluminum (Al), Lead (Pb), Copper (Cu)
Rachid El Chaal   +1 more
doaj   +1 more source

Parametric Estimation of Diffusion Processes: A Review and Comparative Study

open access: yesMathematics, 2021
This paper provides an in-depth review about parametric estimation methods for stationary stochastic differential equations (SDEs) driven by Wiener noise with discrete time observations.
Alejandra López-Pérez   +2 more
doaj   +1 more source

Dynamic Shortest Paths Methods for the Time-Dependent TSP

open access: yesAlgorithms, 2021
The time-dependent traveling salesman problem (TDTSP) asks for a shortest Hamiltonian tour in a directed graph where (asymmetric) arc-costs depend on the time the arc is entered.
Christoph Hansknecht   +2 more
doaj   +1 more source

Mathematical Optimization of Treatment Schedules [PDF]

open access: yesInternational Journal of Radiation Oncology*Biology*Physics, 2016
In the past decades mathematical optimization has found its way into radiation therapy and has made profound practice changing impact. Today, virtually all advanced treatment delivery methods, such as IMRT, VMAT, tomotherapy, LDR/HDR brachytherapy, proton therapy, are based on some form of optimization approach that changes the treatment variables ...
Gorissen, Bram L.   +2 more
openaire   +3 more sources

Discussion: Latent variable graphical model selection via convex optimization [PDF]

open access: yes, 2012
Discussion of "Latent variable graphical model selection via convex optimization" by Venkat Chandrasekaran, Pablo A. Parrilo and Alan S. Willsky [arXiv:1008.1290].Comment: Published in at http://dx.doi.org/10.1214/12-AOS984 the Annals of Statistics ...
Giraud, Christophe, Tsybakov, Alexandre
core   +5 more sources

Optimized and Personalized Phlebotomy Schedules for Patients Suffering From Polycythemia Vera

open access: yesFrontiers in Physiology, 2020
Polycythemia vera (PV) is a slow-growing type of blood cancer, where the production of red blood cells (RBCs) increase considerably. The principal treatment for targeting the symptoms of PV is bloodletting (phlebotomy) at regular intervals based on data ...
Patrick Lilienthal   +4 more
doaj   +1 more source

On the stabilization of a coupled fractional ordinary and partial differential equations† [PDF]

open access: yesIranian Journal of Numerical Analysis and Optimization, 2020
We investigate the stabilization problem of a cascade of a fractional ordinary differential equation (FODE) and a fractional diffusion (FD) equation, where the interconnections are of Neumann type.
S. Amiri, M. Keyanpour
doaj   +1 more source

Integer programming for optimal yaw control of wind farms [PDF]

open access: yesWind Energy Science
It is well-known that wakes caused by wind turbines within a wind farm negatively impact the power generation and mechanical load of downstream turbines. This is already partially considered in the farm layout.
F. Bestehorn   +6 more
doaj   +1 more source

Dynamical Analysis for the Hybrid Network Model of Delayed Predator-Prey Gompertz Systems with Impulsive Diffusion between Two Patches

open access: yesDiscrete Dynamics in Nature and Society, 2020
In this paper, we consider a hybrid network model of delayed predator-prey Gompertz systems with impulsive diffusion between two patches, in which the patches represent nodes of the network such that the prey population interacts locally in each patch ...
Li Xiang   +4 more
doaj   +1 more source

On pattern classification algorithms - Introduction and survey [PDF]

open access: yes, 1968
Pattern recognition algorithms, and mathematical techniques of estimation, decision making, and optimization ...
Agrawala, A. K., Ho, YU.-C.
core   +2 more sources

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