Results 151 to 160 of about 25,214,365 (363)

Variational inference for diffusion processes [PDF]

open access: yes, 2008
Diffusion processes are a family of continuous-time continuous-state stochastic processes that are in general only partially observed. The joint estimation of the forcing parameters and the system noise (volatility) in these dynamical systems is a crucial, but non-trivial task, especially when the system is nonlinear and multimodal.
Cédric Archambeau   +4 more
openaire   +1 more source

Realised power variation and stochastic volatility models [PDF]

open access: yes
Limit distribution results on realised power variation, that is sums of absolute powers of increments of a process, are derived for certain types of semimartingale with continuous local martingale component, in particular for a class of flexible ...
Neil Shephard, Ole E. Barndorff-Nielsen
core  

Process-Oriented Tolerance and Variation Management: Review and Classification

open access: yesApplied Sciences
In the context of tolerance management, the consideration of manufacturing and assembly processes is becoming increasingly important. The main drivers for this are, above all, short development times and high-quality requirements, leading to tight ...
Philipp Litzenburger   +5 more
doaj   +1 more source

The human gut microbiome across the life course

open access: yesFEBS Letters, EarlyView.
Despite significant individual variation and continuous change throughout life, the human gut microbiome follows some life stage‐specific trends. This article provides a brief overview of how gut microbiome composition shifts across different phases of life. Created in BioRender. Özkurt, E. (2026) https://BioRender.com/8q4nrnc.
Alise J. Ponsero   +4 more
wiley   +1 more source

A Fast and Accurate Process Variation-aware Modeling Technique for Resistive Bridge Defects

open access: yes
Recent research has shown that tests generated without taking process variation into account may lead to loss of test quality. At present there is no efficient device-level modeling technique that models the effect of process variation on resistive ...
Khursheed, Saqib   +2 more
core  

Econometrics of testing for jumps in financial economics using bipower variation [PDF]

open access: yes
In this paper we provide an asymptotic distribution theory for some non-parametric tests of the hypothesis that asset prices have continuous sample paths. We study the behaviour of the tests using simulated data and see that certain versions of the tests
Neil Shephard, Ole E. Barndorff-Nielsen
core  

Degradation mechanism of the von Willebrand factor A2 domain by nattokinase

open access: yesFEBS Letters, EarlyView.
Nattokinase, a natto‐derived protease, exhibits potent antithrombotic effects. This study demonstrates that nattokinase directly cleaves the von Willebrand factor (vWF) A2 domain in vitro. Unlike the native regulator ADAMTS13, nattokinase degrades folded vWF independently of shear stress.
Ryuichi Hyakumoto   +3 more
wiley   +1 more source

Optimal calibration in immunoassay and inference on the coefficient of variation [PDF]

open access: yes, 2008
This thesis examines and develops statistical methods for design and analysis with applications in immunoassay and other analytical techniques. In immunoassay, concentrations of components in clinical samples are measured using antibodies.
Forkman, Johannes
core  

Modulation of Homer1 EVH1 domain internal dynamics by putative autism‐associated mutations

open access: yesFEBS Letters, EarlyView.
The putative autism‐associated M65I and S97L variants of the EVH1 domain of the postsynaptic scaffold protein Homer1 do not exhibit substantial changes in their overall structure or partner binding. Both of them, but especially the M65I variant, show altered internal dynamics relative to the wild‐type domain on the μs‐ms timescale, indicated by the ...
Fanni Farkas   +6 more
wiley   +1 more source

The actuation of sound change

open access: yes, 2015
This dissertation is a sociophonetic study on sound change in progress. It addresses the actuation problem, i.e. the question as to why a particular change takes place in a particular language at a given time. The study is implemented in the framework of
Engelse taalkunde   +2 more
core  

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