Results 21 to 30 of about 357,503 (297)
Bone & Joint Research, 2023 Aims: We compared the risks of re-revision and mortality between two-stage and single-stage revision surgeries among patients with infected primary hip arthroplasty.
Erik Lenguerrand +8 more
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Cortical fractal dimension predicts disability worsening in Multiple Sclerosis patients
NeuroImage: Clinical, 2021 Background: Fractal geometry measures the morphology of the brain and detects CNS damage. We aimed to assess the longitudinal changes on brain’s fractal geometry and its predictive value for disease worsening in patients with Multiple Sclerosis (MS ...
Eloy Roura +12 more
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Formulating Wald Tests of Nonlinear Restrictions
Econometrica, 1985 On montre a partir de l'evidence de Monte Carlo que les differences dans la forme fonctionnelle des restrictions non lineaires sont importantes dans les petites tailles d ...
Gregory, Allan W, Veall, Michael R
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Power comparison among tests for fractional unit roots [PDF]
, 2008 This article compares the asymptotic power properties of the Wald, the Lagrange Multiplier and the Likelihood Ratio test for fractional unit roots. The paper shows that there is an asymptotic inequality between the three tests that holds under fixed ...
Lobato, Ignacio N., Velasco, Carlos
core +3 more sources
Distributed Target Detection in Unknown Interference
Sensors, 2022 Interference can degrade the detection performance of a radar system. To overcome the difficulty of target detection in unknown interference, in this paper we model the interference belonging to a subspace orthogonal to the signal subspace.
Kaiming Xu, Yunkai Deng, Zhongjun Yu
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Wald tests of singular hypotheses
Bernoulli, 2016 Motivated by the problem of testing tetrad constraints in factor analysis, we study the large-sample distribution of Wald statistics at parameter points at which the gradient of the tested constraint vanishes. When based on an asymptotically normal estimator, the Wald statistic converges to a rational function of a normal random vector.
Drton, Mathias, Xiao, Han
openaire +4 more sources
Comparison of Relative Informational Content of Three Section and Five Section Cash-flow Statement in Explaining Future Stock Return of Listed Companies in Tehran Securities and Exchange (TSE) [PDF]
مطالعات تجربی حسابداری مالی, 2011 The main purpose of this research is to compare the relative informational content of operating and financing cash flows of three and five section cash flow statement in explaining future stock return.
D foroghi +3 more
doaj
Prediction of the uncontrolled course of autoimmune type 1 diabetes in children
Zdorovʹe Rebenka, 2020 Background. Diabetes mellitus as a disease of civilization is one of the main causes of death in most developed countries. Purpose of the study: to determine the risk factors for the uncontrolled course of autoimmune type 1 diabetes in children ...
A.E. Abaturov +5 more
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Testing for changes in forecasting performance [PDF]
, 2019 We consider the issue of forecast failure (or breakdown) and propose methods to assess retrospectively whether a given forecasting model provides forecasts which show evidence of changes with respect to some loss function.
Perron, Pierre, Yamamoto, Yohei
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REEXAMINING THE QUANTITY THEORY OF MONEY: AN EMPIRICAL ANALYSIS FROM THE JOINT HYPOTHESIS
Economic Review, 2021 The joint hypothesis test is a replicable interpretation of the quantity theory of money (QTM) when used as an inflation theory. This study examined the effect of money supply and gross domestic product (GDP) growth on inflation volatility.
Cheng-Wen Lee +1 more
doaj +2 more sources