Results 111 to 120 of about 71,271 (229)
A Note on Local Polynomial Regression for Time Series in Banach Spaces
Journal of Time Series Analysis, EarlyView.ABSTRACT This work extends local polynomial regression to Banach space‐valued time series for estimating smoothly varying means and their derivatives in non‐stationary data. The asymptotic properties of both the standard and bias‐reduced Jackknife estimators are analyzed under mild moment conditions, establishing their convergence rates.
Florian Heinrichs
wiley +1 more source
Sequential Outlier Detection in Nonstationary Time Series
Journal of Time Series Analysis, EarlyView.ABSTRACT A novel method for sequential outlier detection in nonstationary time series is proposed. The method tests the null hypothesis of “no outlier” at each time point, addressing the multiple testing problem by bounding the error probability of successive tests, using extreme‐value theory. The asymptotic properties of the test statistic are studied
Florian Heinrichs +2 more
wiley +1 more source
Journal of Zoology, EarlyView.Here we explore the effects of elevated water conductivity on larval eastern hellbenders (Cryptobranchus a. alleganiensis), both lethal and sublethal. We found that elevated water conductivity significantly impacts both survival and morphology, though it has limited effects on locomotor performance, stress physiology, and oxidative stress.
S. C. Mathes +6 more
wiley +1 more source
Political Psychology, EarlyView.Abstract The midpoint of the left‐right self‐placement item is hiding important political diversity, and may be conflating moderate responders with populists and other political sub‐groups. Survey researchers should consider this problem when examining relationships between political orientation and political attitudes.
Edward J. R. Clarke +6 more
wiley +1 more source
Diagonal quartic surfaces and transcendental elements of the Brauer group [PDF]
, 2017 We exhibit central simple algebras over the function field of a diagonal quartic surface over the complex numbers that represent the 2-torsion part of its Brauer group.
Ieronymou, Evis
core
The zeta function of the quartic oscillator
Nuclear Physics B, 1980 Abstract We investigate the levels of the quartic oscillator ( − d 2 d q 2 + q 4 ) by means of the associated zeta function. By using several versions of the semiclassical approach, we prove exact results concerning the locations of the real zeros and of the poles of that function, the residues of which are essentially the ...
openaire +1 more source
Mortality, morbidity, and occupational decline
The Scandinavian Journal of Economics, EarlyView.Abstract Is long‐term economic stress from occupational decline linked to poor health or death? Using Swedish administrative data matched with US occupational trends, I examine this in reduced form and using instrumental variables. Workers who in 1985 worked in occupations that subsequently declined unexpectedly were more likely to die early than ...
Sofia Bougt‐Hernnäs
wiley +1 more source
Journal of High Energy PhysicsOut-of-time-ordered-correlators (OTOCs) have been suggested as a means to diagnose chaotic behavior in quantum mechanical systems. Recently, it was found that OTOCs display exponential growth for the inverted quantum harmonic oscillator, mirroring the ...
Paul Romatschke
doaj +1 more source
Ramanujan's alternative quartic theory of theta functions
Journal of Mathematical Analysis and Applications, 2015 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire +2 more sources
Zoonoses and Public Health, EarlyView.ABSTRACT Introduction Canine Leishmaniasis is a vector‐borne zoonotic disease caused by several species of protozoa of the genus Leishmania. In the state of Rio de Janeiro (RJ), Leishmania braziliensis is the most prevalent species causing tegumentary leishmaniasis (TL) and Leishmania infantum is the main causative agent of visceral leishmaniasis (VL).
Luciana de Freitas Campos Miranda +10 more
wiley +1 more source