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Distribution of the Serial Correlation Coefficient in a Circularly Correlated Universe
The Annals of Mathematical Statistics, 1947 It is desired to find an approximate distribution of simple form for the statistic $\bar r = \frac{x_1x_2 + \cdots + x_Tx_1} {x_1^2 + \cdots + x_T^2}$ ($\bar r$ is an estimate of the serial correlation coefficient $\rho$ in a circular universe) in the case that $\rho \neq O$ in the universe.
openaire +2 more sources
A Closer Look at Serial Growth Rate Correlation [PDF]
Serial correlation in annual growth rates carries a lot of information on growth pro-cesses – it allows us to directly observe firm performance as well as to test theories.
Alex Coad
core
How Strong is the Case for Dollarization in Costa Rica? A Note on the Business Cycle Comovements with the United States [PDF]
We evaluate the proposal for official dollarization in Costa Rica by applying a new approach to measure the business cycle comovements with the United States. While the literature often focuses on the correlation of shocks, we point out that the response
Frank Westermann, Nannette Lindenberg
core +3 more sources
COMP–PMEPA1 axis promotes epithelial‐to‐mesenchymal transition in breast cancer cells
Molecular Oncology, EarlyView.This study reveals that cartilage oligomeric matrix protein (COMP) promotes epithelial‐to‐mesenchymal transition (EMT) in breast cancer. We identify PMEPA1 (protein TMEPAI) as a novel COMP‐binding partner that mediates EMT via binding to the TSP domains of COMP, establishing the COMP–PMEPA1 axis as a key EMT driver in breast cancer.
Konstantinos S. Papadakos +6 more
wiley +1 more source
Molecular Oncology, EarlyView.Pre‐analytical handling critically determines liquid biopsy performance. This study defines practical best‐practice conditions for cell‐free DNA (cfDNA) and extracellular vesicle–derived DNA (evDNA), showing how processing time, storage conditions, tube type, and plasma input volume affect DNA integrity and mutation detection.
Jonas Dohmen +11 more
wiley +1 more source
Testing for Serial Correlation in Systems of Simultaneous Regression Equations [PDF]
The Egyptian Statistical Journal, 1974 G.A. Ghazal
doaj +1 more source
Improved autoregressive model for correction of noise serial correlation in fast fMRI. [PDF]
Magn Reson Med, 2020 Luo Q +4 more
europepmc +1 more source
Further evidence on the size and power of the Bierens and Johansen cointegration procedures [PDF]
Although both the Johansen (1991, 1994) trace test and Bierens (1997a,b) nonparametric lambda-min test for cointegration have good size properties in Monte Carlo studies by Hubrich, Lutkepohl, and Saikkonen (2001) and Boswijk, Lucas, and Taylor (2000 ...
David O. Cushman
core
Molecular Oncology, EarlyView.Glioma cells mainly express the endothelin receptor EDNRB, while EDNRA is restricted to a perivascular tumor subpopulation. Endothelin signaling reduces glioma cell proliferation while promoting migration and a proneural‐to‐mesenchymal transition associated with poor prognosis. This pathway activates Ca2+, K+, ERK, and STAT3 signalings and is regulated
Donovan Pineau +36 more
wiley +1 more source
A Test for Serial Correlation in Multivariate Data
The Annals of Statistics, 1977 Consider a sample from a multiple time series that is stationary and Gaussian. A test is presented for independence among the multivariate observations that comprise this sample. The test is a generalization of the Kolmogorov-Smirnov test for serial correlation in a single time series.
openaire +2 more sources