Results 51 to 60 of about 123,701 (142)

Perfectly normal nonrealcompact spaces under Martin's Maximum

open access: yesMathematical Logic Quarterly, Volume 70, Issue 4, Page 388-397, November 2024.
Abstract We analyze the behavior of a perfectly normal nonrealcompact space (ω1,τ)$(\omega _1, \tau)$ on ω1$\omega _1$ such that for every γ<ω1$\gamma <\omega _1$, γ$\gamma$ is τ$\tau$‐open and γ+ω$\gamma +\omega$ is τ$\tau$‐closed under Martin's Maximum. We show that there exists a club subset D$D$ of ω1$\omega _1$ such that for a stationary subset of
Tetsuya Ishiu
wiley   +1 more source

Support vector machine‐based handover scheme for heterogeneous ultra dense network of high‐speed railway

open access: yesIET Communications, Volume 18, Issue 18, Page 1191-1204, November 2024.
This work proposes an enhanced handover decision strategy for 5G networks deployed in high‐speed railway (HSR) systems, leveraging Support Vector Machine (SVM) classification. Addressing challenges such as high handover failure probability and frequent handovers due to dense small cell deployment, the proposed approach significantly reduces number of ...
Siling Wang, Li Zhang
wiley   +1 more source

AutoZOOM: Autoencoder-based Zeroth Order Optimization Method for Attacking Black-box Neural Networks [PDF]

open access: yesAAAI Conference on Artificial Intelligence, 2018
Recent studies have shown that adversarial examples in state-of-the-art image classifiers trained by deep neural networks (DNN) can be easily generated when the target model is transparent to an attacker, known as the white-box setting.
Chun-Chen Tu   +7 more
semanticscholar   +1 more source

Data‐driven observability analysis and enhancement for radome slope estimation with constraints on impact angle and terminal acceleration

open access: yesIET Radar, Sonar &Navigation, Volume 18, Issue 10, Page 1887-1907, October 2024.
The authors propose a data‐driven observability analysis method for radome aberration estimation systems with LOS‐angle‐only measurements, and an observability‐enhanced guidance law that considers both impact angle and terminal acceleration constraints.
Bingyu Jin, Kelin Lu, Yuping Lu
wiley   +1 more source

Viscosity and dissipative hydrodynamics from effective field theory

open access: yes, 2015
With the goal of deriving dissipative hydrodynamics from an action, we study classical actions for open systems, which follow from the generic structure of effective actions in the Schwinger-Keldysh Closed-Time-Path formalism with two time axes and a ...
Grozdanov, Sašo, Polonyi, Janos
core   +1 more source

The Erlang weighted tree, a new branching process

open access: yesRandom Structures &Algorithms, Volume 64, Issue 3, Page 537-624, May 2024.
Abstract In this paper, we study a new discrete tree and the resulting branching process, which we call the erlang weighted tree(EWT). The EWT appears as the local weak limit of a random graph model proposed in La and Kabkab, Internet Math. 11 (2015), no. 6, 528–554.
M. Moharrami   +3 more
wiley   +1 more source

SO(3) symmetry between Neel and ferromagnetic order parameters for graphene in a magnetic field

open access: yes, 2007
I consider the Hubbard model of graphene in an external magnetic field and in the Hartree-Fock approximation. In the continuum limit, the ground state energy at half filling becomes nearly symmetric under rotations of the three-component vector (N1,N2,m),
I. Herbut, Igor F. Herbut
core   +1 more source

Direct implementation with evidence

open access: yesTheoretical Economics, Volume 19, Issue 2, Page 783-822, May 2024.
We study full implementation with evidence in an environment with bounded utilities. We show that a social choice function is Nash implementable in a direct revelation mechanism if and only if it satisfies the measurability condition proposed by Ben‐Porath and Lipman (2012).
Soumen Banerjee   +2 more
wiley   +1 more source

Gradient expansion, curvature perturbations and magnetized plasmas

open access: yes, 2011
The properties of magnetized plasmas are always investigated under the hypothesis that the relativistic inhomogeneities stemming from the fluid sources and from the geometry itself are sufficiently small to allow for a perturbative description prior to ...
D. Biskamp   +9 more
core   +1 more source

Sensitivity of GNSS‐Derived Estimates of Terrestrial Water Storage to Assumed Earth Structure

open access: yesJournal of Geophysical Research: Solid Earth, Volume 129, Issue 3, March 2024.
Abstract Geodetic methods can monitor changes in terrestrial water storage (TWS) across large regions in near real‐time. Here, we investigate the effect of assumed Earth structure on TWS estimates derived from Global Navigation Satellite System (GNSS) displacement time series.
Matthew J. Swarr   +2 more
wiley   +1 more source

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