Results 81 to 90 of about 30,274 (242)

Adaptive Estimation for Weakly Dependent Functional Times Series

Journal of Time Series Analysis, EarlyView.
ABSTRACT We propose adaptive mean and autocovariance function estimators for stationary functional time series under 𝕃p−m‐approximability assumptions. These estimators are designed to adapt to the regularity of the curves and to accommodate both sparse and dense data designs.
Hassan Maissoro, Valentin Patilea, Myriam Vimond   +2 more
wiley   +1 more source

Quantum phase transitions from analysis of the polarization amplitude

, 2019
In the modern theory of polarization, polarization itself is given by a geometric phase. In calculations for interacting systems the polarization and its variance are obtained from the polarization amplitude.
Dóra, Balázs, Hetényi, Balázs
core   +1 more source

Fiscal policy and economic activity: new causal evidence

The Scandinavian Journal of Economics, EarlyView.
Abstract Utilizing a quasi‐natural experiment design, we identify an exogenous cut in local taxes accompanied by an equivalent reduction in local government spending, and we estimate the impact of these exogenous changes on income. We exploit a unique regional dataset that combines local income data with local voting outcomes on current expense tax ...
David M. Brasington, Marios Zachariadis
wiley   +1 more source

Artificial Bias Induction in Fourth-Order Cumulants Based Automatic Modulation Classification Algorithm in AWGN and Multipath Propagation Channel [PDF]

Radioengineering
Automatic modulation classification (AMC) represents a wide used technique for modulation format recognition of signals considered to be a priori unknown.
R. Bozovic, V. Orlic, G. Kekovic
doaj  

Dual‐Functional Polyphosphoesters for Gene Delivery: Synergistic Effects of Guanidinium and Hydrophobic Side Chains in Degradable Polymers

Advanced Healthcare Materials, Volume 15, Issue 9, 6 March 2026.
This study presents guanidinium‐ and indole‐functionalized polyphosphoesters as degradable, non‐viral gene delivery vectors. Through precise tuning of charge density and hydrophobicity, these polymers form stable polyplexes with low toxicity. Remarkably, minor structural changes yield up to 200‐fold differences in transfection efficiency, highlighting ...
Markus Kötzsche, Andreas Dzierza, Jan Egger, Timo Rheinberger, Christin Weilandt, Frederik R. Wurm, Ivo Nischang, Dagmar Fischer, Kalina Peneva   +8 more
wiley   +1 more source

Spectrum Sensing Based on Higher Order Cumulants and Kurtosis Statistics Tests in Cognitive Radio [PDF]

Radioengineering, 2019
In this paper, new algorithms for spectrum sensing in cognitive radio based on higher order cumulants and kurtosis are proposed. The cumulants represent statistical signal processing based on pattern recognition for signals of different structure, and ...
R. Bozovic, M. Simic
doaj  

Mode fluctuations as fingerprint of chaotic and non-chaotic systems

, 1996
The mode-fluctuation distribution $P(W)$ is studied for chaotic as well as for non-chaotic quantum billiards. This statistic is discussed in the broader framework of the $E(k,L)$ functions being the probability of finding $k$ energy levels in a randomly ...
Aurich, R., Bäcker, A., Steiner, F.
core   +2 more sources

Bioinspired, Guanidinium, and Indole Modified Poly(glycidyl ether)s as Highly Efficient Vectors for Polyplex‐Mediated Gene Delivery

Macromolecular Rapid Communications, Volume 47, Issue 6, 20 March 2026.
Guanidinium‐ and indole‐functionalized poly(glycidyl ether)s were developed as non‐viral gene delivery vectors with tunable hydrophilic–hydrophobic balance. All polymers formed stable DNA polyplexes, while moderate indole content yielded the highest transfection efficiency at low N/P ratios.
Markus Kötzsche, Andreas Dzierza, Lennert Sölter, Jan Egger, Kjell Cornelis, Andreas Stihl, Felix H. Schacher, Dagmar Fischer, Kalina Peneva   +8 more
wiley   +1 more source

Understanding cumulative risk

Quarterly Journal of Experimental Psychology, 2010
This paper summarizes the theory of simple cumulative risks—for example, the risk of food poisoning from the consumption of a series of portions of tainted food. Problems concerning such risks are extraordinarily difficult for naïve individuals, and the paper explains the reasons for this difficulty.
McCloy, Rachel Ann, Byrne, Ruth M J, Johnson-Laird, Philip N   +2 more
openaire   +3 more sources

Quantification of Alkali‐Fluoride Nanoparticle Dissolution in Aqueous Media as a Function of Crystallinity and Surface Modification

Particle &Particle Systems Characterization, Volume 43, Issue 3, March 2026.
Fluoride release kinetics from uncoated and coated β−NaYF4$\ubeta-{\rm NaYF}_4$ and LiYF4${\rm LiYF}_4$ in aqueous solutions are quantified using an ion‐selective electrode coupled to a dialysis compartment. TEM/DLS/ICP‐OES and speciation‐aware modeling complement the fluoride release results.
Sophia J. Baumann, Thomas Hirsch, Thomas Baumann   +2 more
wiley   +1 more source