Results 41 to 50 of about 1,945,580 (301)

A Galton–Watson process with a threshold

open access: yesJournal of Applied Probability, 2016
Abstract In this paper we study a special class of size dependent branching processes. We assume that for some positive integer K as long as the population size does not exceed level K, the process evolves as a discrete-time supercritical branching process, and when the population size exceeds level K, it evolves as a subcritical or critical branching ...
Athreya, K. B., Schuh, H.-J.
openaire   +2 more sources

An improved infrared image processing method based on adaptive threshold denoising

open access: yesEURASIP Journal on Image and Video Processing, 2019
This paper combines the image adaptive threshold denoising algorithm and performs double threshold mapping processing to the infrared image, which effectively reduces the influence of these phenomena to the infrared image and improves the quality of the ...
Yu Binbin
doaj   +1 more source

Morphological Characteristics and Printing Mechanisms of Grid Lines by Laser-Induced Forward Transfer

open access: yesMetals, 2022
Laser-induced forward transfer (LIFT) is an innovative metallization technique used in the processing of grid lines of solar cells for the photovoltaics industry.
Yanmei Zhang   +6 more
doaj   +1 more source

On identification of the threshold diffusion processes [PDF]

open access: yesAnnals of the Institute of Statistical Mathematics, 2010
We consider the problems of parameter estimation for several models of threshold ergodic diffusion processes in the asymptotics of large samples. These models are the direct continuous time analogues of the well-known in time series analysis threshold autoregressive (TAR) models.
openaire   +2 more sources

Denoising and Baseline Drift Removal Method of MEMS Hydrophone Signal Based on VMD and Wavelet Threshold Processing

open access: yesIEEE Access, 2019
Aiming at the problem that the signals received by MEMS vector hydrophones are mixed with a large amount of external environmental noise, and inevitably produce baseline drift and other distortion phenomenons which made it difficult for the further ...
Hongping Hu   +4 more
doaj   +1 more source

Signal processing algorithm of ship IMU accelerometer based on wavelet theory

open access: yesZhongguo Jianchuan Yanjiu, 2020
Objectives Based on an analysis of the signal noise characteristics of an inertial measurement unit (IMU) accelerometer, the noise was studied in the wavelet domain.Methods In order to solve the limitations of the traditional Fourier filtering method for
XU Bo   +4 more
doaj   +1 more source

Continuous Wavelet Transform and Hidden Markov Model Based Target Detection [PDF]

open access: yes, 2014
Standard tracking filters perform target detection process by comparing the sensor output signal with a predefined threshold. However, selecting the detection threshold is of great importance and a wrongly selected threshold causes two major problems ...
Efe, M., Tuğaç, S.
core   +1 more source

Thermal Impact on Spiking Properties in Hodgkin-Huxley Neuron with Synaptic Stimulus

open access: yes, 2007
The effect of environmental temperature on neuronal spiking behaviors is investigated by numerically simulating the temperature dependence of spiking threshold of the Hodgkin-Huxley neuron subject to synaptic stimulus.
A. F. Huxley   +28 more
core   +2 more sources

Improving the Evaluation and Management of Transfusion‐Related Iron Overload in Children, Adolescents, and Young Adults Following Cancer Treatment or Hematopoietic Stem Cell Transplantation

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Transfusion‐related iron overload (TRIO) is a late effect of therapy impacting survivors of childhood cancer and hematopoietic stem cell transplantation (HSCT) who receive frequent packed red blood cell (pRBC) transfusions. Surprisingly, there are no accepted guidelines to assist providers in identifying and treating at‐risk ...
Luke Gingell   +3 more
wiley   +1 more source

RECEPTIVE AND PRODUCTIVE VOCABULARY ACQUISITION: EXAMINING PROCESSING TIME AND MEMORY THRESHOLD

open access: yesIndonesian Journal of Applied Linguistics, 2012
: In the present research a picture card-based vocabulary study method was used to determine the pace of learner acquisition in terms of both receptive and productive knowledge. Fifty-eight first-year Japanese university students in two classes were used
Andrew Oberg
doaj   +1 more source

Home - About - Disclaimer - Privacy