Results 91 to 100 of about 207,009 (229)

Topology‐based Visual Analysis of Hydrothermal Plumes

open access: yesComputer Graphics Forum, EarlyView.
Abstract Hydrothermal plumes are turbulent structures of intense heat and mineral smoke that rise and disperse into the deep ocean. Existing models generally characterize these systems as a single axisymmetric plume originating from a point source. However, this assumption breaks down in weakly venting, spatially distributed systems, where low‐flux ...
Adhitya Kamakshidasan   +3 more
wiley   +1 more source

The Truth, the Whole Truth, and Nothing but the Truth: Automatic Visualization Evaluation from Reconstruction Quality

open access: yesComputer Graphics Forum, EarlyView.
Abstract Recent advances in AI enable the automatic generation of visualizations directly from textual prompts using agentic workflows. However, visualizations produced via one‐shot generative methods often suffer from insufficient quality, typically requiring a human in the loop to refine the outputs.
Roxana Bujack   +4 more
wiley   +1 more source

Four Decades of Research at the MADE Site and Beyond: Advancing the Understanding and Modeling of Solute Transport in Heterogeneous Media

open access: yesReviews of Geophysics, Volume 64, Issue 4, December 2026.
Abstract Spatial heterogeneity, manifested as strong variability in hydraulic conductivity (K) within geological formations, exerts a fundamental control on groundwater flow and solute transport. Because K can vary over multiple orders of magnitude in complex three‐dimensional patterns, predicting contaminant plume migration remains a long‐standing ...
Zhilin Guo   +8 more
wiley   +1 more source

Special MISO-SAR and MIMO-SAR Modes for Bidirectional Imaging

open access: yesInternational Journal of Antennas and Propagation, 2014
The paper proposes special multiple-input single-output synthetic aperture radar (MISO-SAR) and multiple-input multiple-output SAR (MIMO-SAR) for bidirectional imaging, which can simultaneously illuminate two areas from different directions in azimuth ...
Hai Jiang   +3 more
doaj   +1 more source

A Novel Azimuth Doppler Signal Reconstruction Approach for the GEO-LEO Bi-Static Multi-Channel HRWS SAR System

open access: yesIEEE Access, 2019
For the geosynchronous-low earth orbit (GEO-LEO) bi-static multi-channel high-resolution and wide-swath synthetic aperture radar (HRWS SAR) system, a novel azimuth Doppler signal reconstruction algorithm is developed based on an equivalent baseline ...
Shuang-Xi Zhang   +4 more
doaj   +1 more source

Analysis on TerraSAR-X Spotlight Scene Size and Sliding Spotlight Azimuth Ambiguity Ratio

open access: yes, 2011
The Technical Note presents an investigation about the scene size of TerraSAR-X Spotlight mode. The TSX spotlight mode was designed in order to ensure a fixed scene size for all incidence angles, i.e. 10kmx10km for Spotlight and 10kmx5km (range x azimuth)
Wollstadt, Steffen
core  

US Influence in Post‐Assad Syria and the Limits of Turkey's Leverage

open access: yesMiddle East Policy, Volume 33, Issue 4, Winter 2026.
Abstract In early 2026, the post‐Assad government in Damascus weakened the Kurdish‐led Syrian Democratic Forces (SDF) and began integrating the group through phased incorporation and gradual reassertion of state authority. While this advanced some Turkish objectives, it demonstrated the limits of Ankara's influence: Kurdish fighters were incorporated ...
Barış Çağlar
wiley   +1 more source

Van Allen Probes Observations of a Fundamental Poloidal Wave in the Plasmasphere

open access: yesJournal of Geophysical Research: Space Physics, Volume 131, Issue 11, November 2026.
Abstract All past spacecraft observations of fundamental poloidal Alfvén (P1) waves attributed to ion drift resonance have been made outside the plasmasphere. In this study, we present the first spacecraft observations of a plasmaspheric P1 wave driven by that resonance.
Kazue Takahashi   +4 more
wiley   +1 more source

On Representation of Macroscopic Crack in Periodic Fine‐Scale Discrete Mechanical Models

open access: yesInternational Journal for Numerical Methods in Engineering, Volume 127, Issue 20, 30 October 2026.
ABSTRACT The evolution of strain localization and the corresponding macroscopic response obtained in multiscale modeling of softening heterogeneous materials strongly depend on the boundary conditions imposed on the fine‐scale model. For rectilinear models (e.g., squares or cubes), employing standard Periodic BCs leads to overestimation of energy ...
Jan Raisinger, Jan Eliáš
wiley   +1 more source

A theoretical analysis of the logging-while-drilling dipole acoustic reflection measurement

open access: yesFrontiers in Earth Science
Post-drilling wireline acoustic single-well imaging technology can now detect geological structures tens of meters away from boreholes. Further development of this single-well imaging technology in the logging-while-drilling (LWD) environment will have ...
Yanghu Li   +5 more
doaj   +1 more source

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