Results 101 to 110 of about 2,188,866 (304)

The exact distribution of exogenous variable coefficient estimators [PDF]

open access: yesJournal of Econometrics, 1984
This paper derives the exact probability density function of the instrumental variable estimator of the exogenous variable coefficient vector in a structural equation containing \(n+1\) endogenous variables and N degrees of overidentification. The derivations make use of an operator calculus which simplifies the algebra of invariant polynomials with ...
openaire   +2 more sources

Partial depletion of plasminogen activator inhibitor‐1 decreases subcutaneous fat cell hypertrophy and liver cholesterol in high‐fat‐fed female mice

open access: yesFEBS Letters, EarlyView.
Obesity raises blood levels of PAI‐1, a protein linked to metabolic dysfunction‐associated steatotic liver disease in people with obesity. In female mice fed a high‐fat diet, partially lowering PAI‐1 led to smaller subcutaneous fat cells and lower liver cholesterol, without changing body weight or insulin sensitivity.
Claudia E. Ramirez Bustamante   +10 more
wiley   +1 more source

Exact Formulation for Stochastic ML Estimation of DOA

open access: yesIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, 2010
This paper addresses the issue of Unconditional or Stochastic Maximum likelihood (SML) estimation of directions-of-arrival (DOA) finding using sensors with arbitrary array configuration. The conventional SML estimation is formulated without an important condition that the covariance matrix of signal components must be non-negative definite.
CHEN, Haihua, SUZUKI, Masakiyo
openaire   +1 more source

EXACT ESTIMATES FOR THE RATE OF CONVERGENCE OF THE s-STEP METHOD OF STEEPEST DESCENT

open access: yes, 1997
Zhuk, P.F. & Bondarenko, L.N. Ukr Math J (1997) 49: 1912. https://doi.org/10.1007/BF02513070We obtain exact (unimprovable) estimates for the rate of convergence of the s-step method of steepest descent for finding the least (greatest) eigenvalue of a ...
BONDARENKO, L.N., Zhuk, P.F.
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

Approximation by complex Bernstein-Kantorovich and Stancu-Kantorovich polynomials and their iterates in compact disks

open access: yesJournal of Numerical Analysis and Approximation Theory, 2008
In this paper, Voronovskaja-type results with quantitative upper estimates and the exact orders in simultaneous approximation by some complex Kantorovich-type polynomials and their iterates in compact disks in \(\mathbb{C}\) are obtained.
Sorin G. Gal
doaj   +2 more sources

Internal exact controllability of the linear population dynamics with diffusion

open access: yesElectronic Journal of Differential Equations, 2004
We consider the internal exact controllability of a linear age and space structured population model with nonlocal birth process. The control acts only in a spatial subdomain and only for small age classes.
Bedr'Eddine Ainseba, Sebastian Anita
doaj  

Coercive solvability of the nonlocal boundary value problem for parabolic differential equations

open access: yesAbstract and Applied Analysis, 2001
The nonlocal boundary value problem, v′(t)+Av(t)=f(t)(0≤t≤1),v(0)=v(λ)+μ ...
A. Ashyralyev   +2 more
doaj   +1 more source

Exact Error Estimates and Optimal Randomized Algorithms for Integration ⋆

open access: yes, 2008
. Exact error estimates for evaluating multi-dimensional integrals are considered. An estimate is called exact if the rates of convergence for the low- and upper-bound estimate coincide. The algorithm with such an exact rate is called optimal.
Ivan T. Dimov, Emanouil Atanassov
core  

Exact upper tail probabilities of random series

open access: yes, 2015
In this paper, we obtain new estimates on upper tail probabilities of suitable random series involving a distribution having an exponential tail. These estimates are exact, and the distribution is not heavy-tailed.
Yang, Xiangfeng,
core   +1 more source

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