Results 61 to 70 of about 11,230 (187)

Patterns of River Flow Regulation Across the World's Climate Regions

open access: yesHydrological Processes, Volume 40, Issue 5, May 2026.
We quantify the Impoundment Ratio (IR) for 16 060 dams worldwide to assess how reservoir capacity relative to natural runoff varies across climate regions. One‐third of dams have IR ≥ 1, with the highest values in arid and semi‐arid zones and clear national contrasts within similar climates.
Xin Yi Chong   +2 more
wiley   +1 more source

A Hybrid DWA-MPC Framework for Coordinated Path Planning and Collision Avoidance in Articulated Steering Vehicles

open access: yesMachines
This paper presents an autonomous collision avoidance method that integrates path planning and control for articulated steering vehicles (ASVs) operating in underground tunnel environments.
Xuanwei Chen   +5 more
doaj   +1 more source

Vector Field‐Based Collision‐Free Navigation in Tunnel‐Like Environments

open access: yesJournal of Field Robotics, Volume 43, Issue 3, Page 2521-2547, May 2026.
ABSTRACT Tunnel‐like environments, renowned for their vast scale, confined spaces, and limited visibility, present significant challenges for autonomous robot navigation. This study addresses the critical issue of guiding robots through such environments while ensuring collision‐free navigation and maintaining a specified safety margin from both tunnel
Bao Jianjun   +5 more
wiley   +1 more source

A Meta‐Analysis on Environmental Triggers of Spawning Migrations Reveals a New Classification of Thermal Guilds in European Freshwater Fishes

open access: yesFish and Fisheries, Volume 27, Issue 3, Page 478-495, May 2026.
ABSTRACT Fish migration through river networks is essential for completing life cycles and accessing critical habitats, but fragmentation increasingly disrupts spawning movements. In Europe, over one million barriers limit connectivity and create trade‐offs between ecological integrity and human uses, such as hydropower, flood control, fisheries and ...
Christian Schlautmann   +5 more
wiley   +1 more source

Efficient Dynamic Window Approach With Neural Multi-Trajectory Proposer

open access: yesIEEE Access
We propose a control method for mobile robots that improves navigation in complex environments by integrating the dynamic window approach (DWA) and reinforcement learning technique.
Shinya Yasuda, Hiroshi Yoshida
doaj   +1 more source

Study of Resistive Switching Dynamics and Memory States Equilibria in Analog Filamentary Conductive‐Metal‐Oxide/HfOx ReRAM via Compact Modeling

open access: yesAdvanced Electronic Materials, Volume 12, Issue 7, 6 April 2026.
A physics‐based compact model for Conductive‐Metal‐Oxide/HfOx ReRAM, accounting for ion dynamics, electronic conduction, and thermal effects, is presented. Accurate and versatile simulations of analog non‐volatile conductance modulation and memory state stabilization enable reliable circuit‐level studies, advancing the optimization of neuromorphic and ...
Matteo Galetta   +9 more
wiley   +1 more source

Global dynamic path‐planning algorithm in gravity‐aided inertial navigation system

open access: yesIET Signal Processing, 2021
Signals from gyros and accelerometers in an inertial navigation system (INS) can be processed to obtain navigation information while its errors accumulate with time.
Shengwu Zhao   +3 more
doaj   +1 more source

Deep Adaptive Attention for Joint Facial Action Unit Detection and Face Alignment

open access: yes, 2018
Facial action unit (AU) detection and face alignment are two highly correlated tasks since facial landmarks can provide precise AU locations to facilitate the extraction of meaningful local features for AU detection.
K Zhao   +9 more
core   +1 more source

Agrivoltaic System Potential to Mitigate Effects of Climate Change in Viticulture

open access: yesAdvanced Energy and Sustainability Research, Volume 7, Issue 4, April 2026.
Climate change intensifies heatwaves, droughts, and shifting phenology in vineyards, threatening wine production. Historical meteorological data, onsite measurements, and climate projections reveal rising temperatures, up to 5.8°C by 2100 in wine‐growing regions like Hatzenport (Germany).
Natalie Hanrieder   +12 more
wiley   +1 more source

Relativistic effects and angular dependence in the reaction antiproton-proton -> pi^- pi^+

open access: yes, 2004
We present a new fit to the LEAR data on antiproton-proton -> pi^- pi^+ differential cross sections and analyzing powers motivated by relativistic considerations.
A. M. Green, B. El-Bennich, W. M. Kloet
core   +1 more source

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