Results 101 to 110 of about 4,894 (291)

Optimum bandwidths and kernels for estimating certain discontinuous densities

open access: yes
Estimation of discontinuous densities, alternative notions of IMSE, modified kernel density estimates, optimal bandwidths, optimal kernels,
Wei-Min Huang, B. Ghosh
core   +1 more source

Rethinking Boundaries: End-To-End Recognition of Discontinuous Mentions with Pointer Networks

open access: yes, 2021
A majority of research interests in irregular (e.g., nested or discontinuous) named entity recognition (NER) have been paid on nested entities, while discontinuous entities received limited attention.
Li, Bobo   +5 more
core   +1 more source

Advances in causal discovery methods for ecological time series

open access: yesBiological Reviews, EarlyView.
ABSTRACT Recent advances in data collection technologies (e.g. automated sensor networks, satellite remote sensing, and high‐throughput sequencing) have greatly expanded the availability of ecological time series, enabling new opportunities for causal analyses in dynamic ecosystems.
Kenta Suzuki   +6 more
wiley   +1 more source

Solutions of stationary McKean–Vlasov equation on a high-dimensional sphere and other Riemannian manifolds

open access: yesAdvances in Nonlinear Analysis
We study stationary solutions of McKean–Vlasov equation on a high-dimensional sphere and other compact Riemannian manifolds. We extend the equivalence of the energetic problem formulation to the manifold setting and characterize critical points of the ...
Shalova Anna, Schlichting André
doaj   +1 more source

Capturing the zero: a new class of zero-augmented distributions and multiplicative error processes [PDF]

open access: yes, 2010
We propose a novel approach to model serially dependent positive-valued variables which realize a non-trivial proportion of zero outcomes. This is a typical phenomenon in financial time series observed on high frequencies, such as cumulated trading ...
Hautsch, Nikolaus   +2 more
core  

Funding Costs and Liquidity Creation: Does ESG Play Any Role?

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT This study examines how banks' funding costs affect liquidity creation and whether environmental, social, and governance (ESG) performance shapes this relationship. Using panel data for 136 U.S. commercial banks from 2005 to 2022, we show that higher funding costs are associated with lower liquidity creation, indicating that more expensive ...
Sattam Bin Kowibeen   +2 more
wiley   +1 more source

Efficient Wideband Numerical Simulations for Nanostructures Employing a Drude-Critical Points (DCP) Dispersive Model

open access: yesScientific Reports, 2017
A highly efficient numerical approach for simulating the wideband optical response of nano-architectures comprised of Drude-Critical Points (DCP) media (e.g., gold and silver) is proposed and validated through comparing with commercial computational ...
Qiang Ren   +5 more
doaj   +1 more source

Connecting Thoughts and Actions: A Managerial Process Model on Circular Business Model Innovation

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT Addressing environmental grand challenges such as resource scarcity requires circular business model innovation (CBMI) that enables firms to efficiently close and slow resource cycles through novel activity systems. Drawing on a grounded theory approach based on 59 in‐depth interviews with top managers from Swiss SMEs, we developed a process ...
Fabian Takacs, Karolin Frankenberger
wiley   +1 more source

Nonzero solutions of Hammerstein integral equations with discontinuous kernels

open access: yesJournal of Mathematical Analysis and Applications, 2002
The authors study the nonlinear second-order equation \[ u''(t)= f(t, u(t))\quad\text{for }0< t< 1, \] subject to the three-point boundary conditions \(u(0)= 0\) and \(u(1)=\alpha u'(\eta)\) for \(\eta\in (0,1)\) fixed. The main tool is to pass as usual to an equivalent Hammerstein integral equation and to apply the Leray-Schauder fixed point index; in
INFANTE, GENNARO, WEBB J. R. L.
openaire   +2 more sources

What Do We Know About Scope 3 Emissions in Small‐ and Medium‐Sized Enterprises? Mapping Current Knowledge and Advancing a Theory–Practice‐Oriented Framework

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT Although SMEs comprise over 90% of firms globally, research on their engagement with Scope 3 (value‐chain) greenhouse gas emissions remains limited. This PRISMA‐guided systematic review synthesises 49 SME‐relevant studies to develop a theory‐informed, practice‐oriented framework for more credible and sustained Scope 3 engagement.
Chidinma Uchendu   +5 more
wiley   +1 more source

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