Results 21 to 30 of about 72 (69)
Adaptive 3D Robust Projection Filtering for Erratic Noise Attenuation
ABSTRACT The effective processing of seismic data contaminated by high‐amplitude erratic noise presents a problem in geophysical signal processing, particularly within onshore surveys where noise distributions are complex, non‐stationary and largely unknown.
Akash Nair, Mauricio D. Sacchi
wiley +1 more source
Stepping Stones or Stumbling Blocks? Domestic Mergers and Cross‐Border Consolidation
ABSTRACT We build on empirical evidence showing that international acquisitions exhibit path dependence and often unfold as sequences of deals, and argue that domestic and cross‐border mergers are not necessarily isolated events. Specifically, we ask whether blocking a domestic merger that reduces consumer surplus in the short run could inadvertently ...
Salvatore Piccolo +2 more
wiley +1 more source
Isotopies of complete minimal surfaces of finite total curvature
Abstract Let M$M$ be a Riemann surface biholomorphic to an affine algebraic curve. We show that the inclusion of the space ℜNC∗(M,Cn)$\Re \mathrm{NC}_*(M,\mathbb {C}^n)$ of real parts of nonflat proper algebraic null immersions M→Cn$M\rightarrow \mathbb {C}^n$, n⩾3$n\geqslant 3$, into the space CMI∗(M,Rn)$\mathrm{CMI}_*(M,\mathbb {R}^n)$ of complete ...
Antonio Alarcón +2 more
wiley +1 more source
Abstract Understanding how temporal patterns of moisture and temperature variability influence biogeochemical responses remains a central challenge in modeling the Earth system. Jensen's inequality provides a mathematical framework for quantifying when nonlinear processes cause the response to average conditions to differ systematically from the ...
Yulissa T. Perez Rojas +1 more
wiley +1 more source
Wage Differentials, Firm Investment, and Stock Returns
ABSTRACT This study investigates the effects of labor costs on firms' capital investments and stock returns. I estimate wage premia across US industries and show that the negative investment‐return relation implied by q$$ q $$‐theory is steeper for firms paying high wage premia than for firms paying low wage premia.
Yongjun Kim
wiley +1 more source
ABSTRACT Wildfire susceptibility mapping (WSM) is critical for forest management, land‐use planning, and disaster risk mitigation. Although hybrid artificial neural network (ANN) models optimized by metaheuristic algorithms are increasingly used in susceptibility mapping, they are often evaluated without strong machine learning benchmarks, spatially ...
Talha Taşkanat
wiley +1 more source
The quasi‐redirecting boundary
Abstract We generalize the notion of Gromov boundary to a larger class of metric spaces beyond Gromov hyperbolic spaces. Points in this boundary are classes of quasi‐geodesic rays and the space is equipped with a topology that is naturally invariant under quasi‐isometries.
Yulan Qing, Kasra Rafi
wiley +1 more source
In‐and‐Out: Algorithmic Diffusion for Sampling Convex Bodies
ABSTRACT We present a new random walk for uniformly sampling high‐dimensional convex bodies. It achieves state‐of‐the‐art runtime complexity with stronger guarantees on the output than previously known, namely in Rényi divergence (which implies TV, 𝒲2, KL, χ2$$ {\chi}^2 $$).
Yunbum Kook +2 more
wiley +1 more source
Kuramoto Model on Sierpinski Gasket I: Harmonic Maps
ABSTRACT Motivated by the study of attractors in the Kuramoto model (KM) on graphs, approximating the Sierpinski gasket (SG), we revisit the problem of harmonic maps (HMs) from SG to the circle, first considered by Strichartz. We provide a geometric proof of Strichartz's theorem, which states that for a prescribed degree and suitable boundary ...
Georgi S. Medvedev, Matthew S. Mizuhara
wiley +1 more source
Littlewood, Paley and almost‐orthogonality: a theory well ahead of its time
Abstract The classic paper by Littlewood and Paley [J. Lond. Math. Soc. (1), 6 (1931), 230–233] marked the birth of Littlewood–Paley theory. We discuss this paper and its impact from a historical perspective, include an outline of the results in the paper and their subsequent significance in relation to developments over the last century, and set them ...
Anthony Carbery
wiley +1 more source

