Results 51 to 60 of about 5,733,832 (305)

Empirical investigation of purchasing power parity for Turkey: Evidence from recent nonlinear unit root tests

open access: yesCentral Bank Review, 2017
This study explores the empirical validity of the purchasing power parity (PPP) hypothesis between Turkey and its four major trading partners, the European Union, Russia, China and the US.
Dilem Yıldırım
doaj   +1 more source

Diversity and complexity in neural organoids

open access: yesFEBS Letters, EarlyView.
Neural organoid research aims to expand genetic diversity on one side and increase tissue complexity on the other. Chimeroids integrate multiple donor genomes within single organoids. Self‐organising multi‐identity organoids, exogenous cell seeding, or enforced assembly of region‐specific organoids contribute to tissue complexity.
Ilaria Chiaradia, Madeline A. Lancaster
wiley   +1 more source

A Comparison of Unit-Root Test Criteria

open access: yesJournal of Business & Economic Statistics, 1994
During the past fifteen years, the ordinary least squares estimator and the corresponding pivotal statistic have been widely used for testing the unit root hypothesis in autoregressive processes. Recently, several new criteriia, based on the maximum likelihood estimators and weighted symmetric estimators, have been proposed.
Pantula, Sastry G.   +2 more
openaire   +2 more sources

A Sieve Bootstrap For The Test Of A Unit Root [PDF]

open access: yesJournal of Time Series Analysis, 2003
Abstract. In this paper, we consider a sieve bootstrap for the test of a unit root in models driven by general linear processes. The given model is first approximated by a finite autoregressive integrated process of order increasing with the sample size, and then the method of bootstrap is applied for the approximated autoregression to obtain the ...
Chang, Yoosoon, Park, Joon Y.
openaire   +2 more sources

Salmonella lipopolysaccharide‐containing supported lipid bilayers as platforms to study bacteriophage interactions

open access: yesFEBS Letters, EarlyView.
We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace   +6 more
wiley   +1 more source

Improving the power of unit root tests against fractional alternatives using bootstrap

open access: yesStatistica, 2007
In this paper asymptotic tests for unit root hypothesis against fractional alternatives are considered. Since they are generally badly sized in small samples, even for normally distributed processes, we consider a new bootstrap approach to correct such ...
Luisa Bisaglia, Isabella Procidano
doaj   +1 more source

The Structural Convergence of New Members of the European Union: An Input-Output Perspective

open access: yesEconomies, 2023
This paper aims to approach the topic of structural convergence for new member states from the perspective of input-output analysis. Using a set of input-output measures, based on the OECD RStan database, and a number of unit-root tests, both for ...
Petre Caraiani
doaj   +1 more source

Microbiome−host proteostasis crosstalk—An emerging perspective on mechanisms and interventions toward healthy longevity

open access: yesFEBS Letters, EarlyView.
Proteostasis and the gut microbiota play a key role in shaping host physiology. Microbiota‐derived metabolites, vitamins, and RNA modulate host proteostasis. Findings from model systems, including C. elegans, indicate microbes can either stabilize or disrupt host proteostasis.
Abhishek Anil Dubey, Maria Ermolaeva
wiley   +1 more source

Bootstrap Unit Root Tests [PDF]

open access: yes
We consider the bootstrap unit root tests based on autoregressive integrated models, with or without deterministic time trends. A general methodology is developed to approximate asymptotic distributions for the models driven by integrated time series ...
Joon Y. Park
core   +2 more sources

An Intersection Test for Panel Unit Roots [PDF]

open access: yesEconometric Reviews, 2012
This paper proposes a new panel unit root test based on Simes’ [Biometrika 1986, “An Improved Bonferroni Procedure for Multiple Tests of Significance”] classical intersection test. The test is robust to general patterns of cross-sectional dependence and yet straightforward to implement, only requiring p-values of time series unit root tests of the ...
openaire   +4 more sources

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