Results 91 to 100 of about 991,075 (322)
Multidimensional Fractional Wavelet Transforms and Uncertainty Principles [PDF]
arXiv, 2022 In this paper, we have given a new definition of continuous fractional wavelet transform in $\mathbb{R}^N$, namely the multidimensional fractional wavelet transform (MFrWT) and studied some of the basic properties along with the inner product relation and the reconstruction formula.
arxiv
Educational Data Mining: A Foundational Overview
EncyclopediaEducational data mining (EDM) is a novel scientific area that focuses on developing and applying methods to analyze datasets generated within educational settings. This paper outlines the evolution, significance, and applications of EDM.
Ilias Papadogiannis +2 more
doaj +1 more source
Uncertainty and Unemployment [PDF]
Econometrica, 2017 This paper studies the impact of time-varying idiosyncratic risk at the establishment level on aggregate unemployment fluctuations and on the labor market over the period 1972-2009. I build a tractable search-and-matching model of the labor market with firm dynamics and heterogeneity in productivity and sizes, in which I introduce time-varying ...
openaire +3 more sources
On Barotropic Mechanisms of Uncertainty Propagation in Estimation of Drake Passage Transport [PDF]
arXiv, 2018 Uncertainty in estimation of Drake Passage transport is analyzed in a Hessian-based uncertainty quantification (UQ) framework. The approach extends the adjoint-based ocean state estimation method to provide formal error bounds functionality. Mechanisms of uncertainty propagation in an idealized barotropic model of the Antarctic Circumpolar Current are ...
arxiv
Journal of Applied Clinical Medical Physics, EarlyView.ABSTRACT Background In radiotherapy for early‐stage glottic cancer, evaluating the target surface dose at the glottic air–tissue boundary is crucial, as buildup effect can cause underdosing. The accuracy of dose evaluation in the surrounding tissues is affected by both the dose calculation algorithms and the accuracy of the Hounsfield unit values in ...
Yuki Saito +3 more
wiley +1 more source
Uncertainty and exploration. [PDF]
Decision, 2018 AbstractIn order to discover the most rewarding actions, agents must collect information about their environment, potentially foregoing reward. The optimal solution to this “explore-exploit” dilemma is often computationally challenging, but principled algorithmic approximations exist.
openaire +4 more sources
Communications in Mathematical Physics, 2007 In the ordinary quantum Maxwell theory of a free electromagnetic field, formulated on a curved 3-manifold, we observe that magnetic and electric fluxes cannot be simultaneously measured. This uncertainty principle reflects torsion: fluxes modulo torsion can be simultaneously measured. We also develop the Hamilton theory of self-dual fields, noting that
Freed, D, Moore, G, Segal, G
openaire +3 more sources
Working with the Society and for the Society: A Different Way to Run a Cultural Informatics Lab
Heritage, 2018 Founded in 2014 and formally established in 2017, the Knowledge and Uncertainty Research Laboratory (ΓAB LAB) is active in a wide range of research fields, with cultural informatics being the most prominent one.
Manolis Wallace
doaj +1 more source
Measuring Macroeconomic Uncertainty: The Labor Channel of Uncertainty from a Cross-Country Perspective [PDF]
arXiv, 2020 This paper constructs internationally consistent measures of macroeconomic uncertainty. Our econometric framework extracts uncertainty from revisions in data obtained from standardized national accounts. Applying our model to post-WWII real-time data, we estimate macroeconomic uncertainty for 39 countries. The cross-country dimension of our uncertainty
arxiv
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Purpose To compare plan quality among photon volumetric modulated arc therapy (VMAT) and intensity‐modulated proton therapy (IMPT) with robustness using three different proton beam delivery systems with various spot size (σ) ranges: cyclotron‐generated proton beams (CPBs) (σ: 2.7–7.0 mm), linear accelerator proton beams (LPBs) (σ: 2.9–5.5 mm),
Tara Gray +9 more
wiley +1 more source