Results 81 to 90 of about 1,208 (218)
Preemptive Entry and Technology Diffusion: The Market for Drive‐In Theaters
The RAND Journal of Economics, Volume 57, Issue 3, Page 471-494, Autumn (Fall) 2026.ABSTRACT This article studies entry preemption in new industries. We first test a key prediction of dynamic entry games: Entry preemption is most relevant in intermediate‐sized markets, where firms face highest uncertainty about future entry. Using US drive‐in theater market (1945–1957) data, we find robust evidence for this non‐monotonic relationship ...
Ricard Gil +3 more
wiley +1 more source
On Birkhoff quadrature formulas II
Journal of Approximation Theory, 1989 Let \(-1=x_{nn}
Department of Mathematics, University of Florida, Gainesville, Florida 32611, U.S.A. ( host institution ) +2 more
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Likelihood Estimation for Stochastic Differential Equations with Mixed Effects
Scandinavian Journal of Statistics, Volume 53, Issue 3, Page 1061-1080, September 2026.ABSTRACT Stochastic differential equations provide a powerful tool for modelling dynamic phenomena affected by random noise. When time series are observed for several experimental units, it is often the case that some of the parameters vary between the individual experimental units.
Fernando Baltazar‐Larios +2 more
wiley +1 more source
Repelled Point Processes With Application to Numerical Integration
Scandinavian Journal of Statistics, Volume 53, Issue 3, Page 1101-1133, September 2026.ABSTRACT We look at Monte Carlo numerical integration from a stochastic geometry point of view. While crude Monte Carlo estimators relate to linear statistics of a homogeneous Poisson point process (PPP), linear statistics of more regularly spread point processes can yield unbiased estimators with faster‐decaying variance, and thus lower integration ...
Diala Hawat +3 more
wiley +1 more source
The error norm of quadrature formulae
Numerical Algorithms, 2012 This paper surveys the methods for computation of the norms of the error term functionals of quadrature formulas covering Gauss, Gauss-Lobatto, Gauss-Radau, Gauss-Kronrod and Fejér type quadratures.
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Quadrature formulas for monotone functions [PDF]
Proceedings of the American Mathematical Society, 1992 We prove that adaptive quadrature formulas for the class of monotone functions are much better than nonadaptive ones if the average error is considered. Up to now it was only known that adaptive methods are not better in the worst case (for this and many other classes of functions) or in various average case settings.
openaire +2 more sources
Towards Oblique Engagements With ‘Tipping Points’: A Critical Geography for Redirecting Debates
Transactions of the Institute of British Geographers, Volume 51, Issue 3, September 2026.ABSTRACT This intervention brings debates about tipping points into conversation with critical geographical thinking to suggest a more ‘oblique’ engagement with the concept. Such an approach is vital for rethinking the normative discourses and established imaginaries that dominate in the application of ‘tipping’ to understandings of environmental ...
Rachael Squire +3 more
wiley +1 more source
Nanophotonics, Volume 15, Issue 15, 13 August 2026.Conceptual illustration of the retro‐reflective and transmissive metasurface (RRTM). The blue radar establishes communication with the UAV via the transmissive mode, whereas the purple surveillance radar acquires the status of friendly units through the retro‐reflective mode and the two modes operate simultaneously within the same decoupled aperture ...
Shulei Zhang +8 more
wiley +1 more source
APPROXIMATE CALCULATION METHOD FOR INTEGRALS WITH LOGARITHMIC PECULIARITY OF SPECIAL TYPE
Наука и техника, 2012 The paper shows construction of quadrature formulas with non-negative coefficients for integrals with logarithmic peculiarity of special type. Uniform estimates for errors of approximate formulas make it possible to execute calculations with the required
I. N. Melashko +2 more
doaj
Self‐Similar Blowup for the Cubic Schrödinger Equation
Communications on Pure and Applied Mathematics, Volume 79, Issue 8, Page 1831-1918, August 2026.ABSTRACT We give a rigorous proof for the existence of a finite‐energy, self‐similar solution to the focusing cubic Schrödinger equation in three spatial dimensions. The proof is computer‐assisted and relies on a fixed point argument that shows the existence of a solution in the vicinity of a numerically constructed approximation.
Roland Donninger, Birgit Schörkhuber
wiley +1 more source