Results 231 to 240 of about 70,196 (284)

Comparative chloroplast genomes of Sophora species: identification of variable DNA markers and phylogenetic relationships within the genus. [PDF]

BMC Plant Biol
Duan N, Ru D, Liu B.
europepmc   +1 more source

Heteroskedastic Structural Vector Autoregressions Identified via Long‐Run Restrictions

Oxford Bulletin of Economics and Statistics, EarlyView.
ABSTRACT A central assumption for identifying structural shocks in vector autoregressive (VAR) models via heteroskedasticity is the time‐invariance of the impact effects of the shocks. It is shown how that assumption can be tested when long‐run restrictions based on the cointegration structure of the variables are available for identifying structural ...
Martin Bruns, Helmut Lütkepohl
wiley   +1 more source

Cointegration in a MIDAS Regression

Oxford Bulletin of Economics and Statistics, EarlyView.
ABSTRACT Mixed data sampling (MIDAS) cointegration models are used to analyse variables observed at different frequencies. In this paper, we start from an assumed autoregressive distributed lag (ADL) model for high‐frequency observations, and derive the resulting representation when the dependent variable is only observed at a lower frequency.
H. Peter Boswijk, Philip Hans Franses
wiley   +1 more source

Projections of 21st-century sea-level fall along coastal Greenland. [PDF]

Nat Commun
Lewright L, Austermann J, Piecuch CG, Adhikari S, Davis JL, Milne GA, Paxman GJG.   +6 more
europepmc   +1 more source

Large‐Dimensional Cointegrated Threshold Factor Models: The Global Term Structure of Interest Rates

Oxford Bulletin of Economics and Statistics, EarlyView.
ABSTRACT In this paper we extend the two‐level factor model to account for cointegration between group‐specific factors in large datasets. We propose two nonlinear specifications: (i) a threshold vector error correction model (VECM) that allows for asymmetric adjustment across regimes; and (ii) a band VECM that captures state‐dependent adjustment which
Daniel Abreu, Paulo M. M. Rodrigues
wiley   +1 more source

A Bayesian deep segmentation framework for glioblastoma tumor segmentation using follow-up MRIs. [PDF]

Front Neuroimaging
Kabir T, Hsieh KL, Nunez L, Hsu YC, Rodriguez Quintero JC, Arevalo O, Zhao K, Zhu JJ, Riascos RF, Madadi M, Jiang X, Shams S.   +11 more
europepmc   +1 more source

Challenges in Bringing Pangenome Research Into Breeding: A Case Study in Rice

Plant Biotechnology Journal, EarlyView.
ABSTRACT Crop breeding has entered the pangenomics era, unlocking a far more comprehensive view of genetic diversity than a single reference genome can capture. In rice (Oryza sativa), a staple crop critical to global food security, the construction of pangenome resources has uncovered extensive structural variations (SVs), presence/absence variations (
Shuai Nie, Fangping Li, Risheng Li, Jian Wang, Yamei Ma, Chon Kit Kenneth Chan, Junliang Zhao, Haifei Hu   +7 more
wiley   +1 more source

Amplitude Versus Angle (AVA) feature restoration in prestack gathers via dictionary learning. [PDF]

PLoS One
Gao Y, Shi X, Zhang D, Wang C, Zhang R, Feng Y.   +5 more
europepmc   +1 more source

An Approximate Bayesian Approach to Optimal Input Signal Design for System Identification. [PDF]

Entropy (Basel)
Bania P, Wójcik A.
europepmc   +1 more source

Rapid genome modifications including chromosomal fusions and large-scale inversions are key features in Arctic codfish species. [PDF]

Genome Biol
Hoff SNK, Maurstad MF, Tørresen OK, Araya RA, Berg PR, Præbel K, Jakobsen KS, Jentoft S.   +7 more
europepmc   +1 more source