Results 91 to 100 of about 21,802,969 (303)

Paralleled two-pass hexagonal algorithm for motion estimation

open access: yes, 2005
This paper presents a paralleled two-pass hexagonal (TPA) algorithm constituted by linear hashtable motion estimation algorithm (LHMEA) and hexagonal search (HEXBS) for motion estimation.
Megson, G.M., Wu, Y.
core   +1 more source

Ligand‐dependent transcriptional heterogeneity in cell cycle gene expression delays G1/S entry

open access: yesFEBS Letters, EarlyView.
EGF and HRG induce distinct G1/S progression programs in ErbB2‐amplified BT474 breast cancer cells. Despite activating the potent ErbB2–ErbB3 heterodimer, HRG does not accelerate cell‐cycle entry. Instead, EGF promotes earlier restriction‐point passage via ERK–FOS signaling, whereas HRG activates the AKT–MYC axis, driving transcriptional heterogeneity ...
Ririn Rahmala Febri   +5 more
wiley   +1 more source

Estimating and explaining efficiency in a multilevel setting: A robust two-stage approach [PDF]

open access: yes
Various applications require multilevel settings (e.g., for estimating fixed and random effects). However, due to the curse of dimensionality, the literature on non-parametric efficiency analysis did not yet explore the estimation of performance drivers ...
De Witte, K., Verschelde, M.
core  

Emerging experimental and computational methods for studying redox‐regulated structural transitions

open access: yesFEBS Letters, EarlyView.
Redox reactions can reshape proteins and alter how they behave in cells, with important consequences for health and disease. This review explores emerging experimental and computational approaches for discovering these redox‐sensitive protein switches, revealing their structural effects, and predicting their behavior, opening new opportunities to ...
Tasneem Rass   +2 more
wiley   +1 more source

[Stage Two Landscapes 31]

open access: yes, 2003
Wet on wet landscape of two white buildings with red roofs. Blue, brown, green, grey and red foreground and grey sky.Tiff file: 2567x3493 pixels, 25.7 Mb; Display: jpeg, 569x800 pixels ...
Father Edward Catich
core   +1 more source

Estimation of Parameters of Non-stationary Geophysical Signals Based on Two-Stage Approximations Using Local Models

open access: yesRussian Journal of Earth Sciences
The authors have developed a technology for estimating the parameters of non-stationary geophysical signals, using a two-stage approximation with local approximation models at the first stage and weighted averaging at the second stage.
Getmanov Viktor   +3 more
doaj   +1 more source

A Two-Stage Framework for Distortion Information Estimation and Underwater Image Restoration

open access: yesPhotonics
This work introduces a two-stage framework, named the Distorted underwater image Restoration Network (DR-Net), to address the complex degradation of underwater images caused by turbulence, water flow fluctuations, and optical properties of water.
Jianming Liu   +7 more
doaj   +1 more source

Identification and estimation of sequential English auctions [PDF]

open access: yes
Brendstrup (2007) and Brendstrup and Paarsch (2006) claim that sequential English auction models with multi-unit demand can be identified from the distribution of the last stage winning price and without any assumption on bidding behavior in the earliest
Laurent Lamy
core  

Synergistic perspectives—How single‐molecule biophysics complement biochemical understanding

open access: yesFEBS Letters, EarlyView.
In this review, we discuss how ensemble biochemistry and single‐molecule approaches are complementary, outline commonly used single‐molecule techniques, and illustrate their relevance through two representative case studies: chromatin organization by SMC complexes and pathway choice during DNA double‐strand break repair.
Sara De Bragança   +2 more
wiley   +1 more source

Testing Categorized Bivariate Normality With Two-Stage Polychoric Correlation Estimates [PDF]

open access: yes
(WP 10/03 Clave pdf) We show that when the thresholds and the polychoric correlation are estimated in two stages, neither Pearson´s X² nor the likelihood ratio G² goodness of fit test statistics are asymptotically chi-square.We propose a new test ...
ALBERTO MAYDEU
core  

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