Results 31 to 40 of about 7,727,216 (292)

Threshold Value Estimation Using Adaptive Two-Stage Plans in R

open access: yesJournal of Statistical Software, 2015
This paper introduces the R package twostageTE for estimation of an inverse regression function at a given point when one can sample an explanatory covariate at different values and measure the corresponding responses.
Shawn Mankad   +2 more
doaj   +1 more source

The adaptive dynamics of function-valued traits [PDF]

open access: yesJournal of Theoretical Biology, 2006
This study extends the framework of adaptive dynamics to function-valued traits. Such adaptive traits naturally arise in a great variety of settings: variable or heterogeneous environments, age-structured populations, phenotypic plasticity, patterns of growth and form, resource gradients, and in many other areas of evolutionary ecology.
Dieckmann, U., Heino, M., Parvinen, K.
openaire   +4 more sources

Fast contrast enhancement by adaptive pixel value stretching

open access: yesInternational Journal of Distributed Sensor Networks, 2018
In this article, we propose a fast and effective method for digital image contrast enhancement. The gray-level dynamic range of contrast-distorted images is extended maximally via adaptive pixel value stretching.
Gang Cao   +3 more
doaj   +1 more source

An Adaptive Policy Evaluation Network Based on Recursive Least Squares Temporal Difference With Gradient Correction

open access: yesIEEE Access, 2018
Reinforcement learning (RL) is an important machine learning paradigm that can be used for learning from the data obtained by the human-computer interface and the interaction in human-centered smart systems. One of the essential problems in RL algorithms
Dazi Li   +3 more
doaj   +1 more source

Self-Adaptive Attribute Value Weighting for Averaged One-Dependence Estimators

open access: yesIEEE Access, 2020
Of numerous proposals for weakening the attribute independence assumption of Naive Bayes, averaged one-dependence estimators (AODE) learns by extrapolation from marginal to full-multivariate probability distributions, and has demonstrated reasonable ...
Limin Wang   +3 more
doaj   +1 more source

Modification of P&O Method on MPPT with PI Controller to Reduce Power Oscillation during Steady-State Condition

open access: yesJurnal EECCIS (Electrics, Electronics, Communications, Controls, Informatics, Systems)
This paper describes an improvement of the Perturb and Observe (P&O) method for maximum power-point tracking (MPPT) on a photovoltaic (PV) cell generating system.
Nisrina Rania Habibah   +2 more
doaj   +1 more source

On the adaptive value of cytoplasmic genomes in plants [PDF]

open access: yesMolecular Ecology, 2014
Abstract Is DNA variation maintained in organelle genomes selectively neutral? The answer to this question has important implications for many aspects of ecology and evolution.
Dan G, Bock   +2 more
openaire   +2 more sources

GNSS DOPPLER VELOCITY BASED ON ADAPTIVE ROBUST KALMAN FILTERING [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
The main factors affecting the error of Doppler velocity measurement mainly come from the measurement errors of GNSS data, influence of different motion states on GNSS velocity measurement and the noise of different receiver types.
H. Liu   +5 more
doaj   +1 more source

Bridging the Loneliness Gap: Depression, Connectivity, and Isolation in Pediatric Oncology Patients and Their Peers

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Loneliness is associated with adverse physical and mental health outcomes and remains understudied in children and adolescents undergoing cancer therapy. Pediatric oncology patients may be at increased risk due to medical isolation and disruption of social networks.
Charlotte N. Stahlfeld   +5 more
wiley   +1 more source

An hp-adaptive Newton-discontinuous-Galerkin finite element approach for semilinear elliptic boundary value problems [PDF]

open access: yes, 2018
In this paper we develop an hp-adaptive procedure for the numerical solution of general second-order semilinear elliptic boundary value problems, with possible singular perturbation.
Thomas P. Wihler   +4 more
core   +2 more sources

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