Results 51 to 60 of about 6,263 (283)

Development of quadruped walking robot TITAN XII and its basic consideration on the control of large obstacle traversing motion

Nihon Kikai Gakkai ronbunshu, 2014
Quadruped walking robots are expected to be utilized for various works on rugged terrain because it has minimum leg number to maintain static stability during walking motion and it can demonstrate high terrain adaptability by utilizing its high degrees ...
Hirone KOMATSU, Masaru OGATA, Ryuichi HODOSHIMA, Gen ENDO, Edwardo F. FUKUSHIMA, Shigeo HIROSE   +5 more
doaj   +1 more source

Improved A* Algorithm for Mobile Robots under Rough Terrain Based on Ground Trafficability Model and Ground Ruggedness Model

Sensors
Considering that the existing path planning algorithms for mobile robots under rugged terrain do not consider the ground flatness and the lack of optimality, which leads to the instability of the center of mass of the mobile robot, this paper proposes an
Zhiguang Liu, Song Guo, Fei Yu, Jianhong Hao, Peng Zhang   +4 more
doaj   +1 more source

Inverse sky islands: lowland river valleys drive microbial divergence while high elevations select for convergence in massive mountain ecosystems

Ecography, EarlyView.
Mountain ecosystems are often interpreted through the lens of the ‘sky island' model, where high‐elevation habitats function as isolated archipelagos. However, this model's applicability to massive, topographically complex mountain ranges where highlands are continuous and lowlands are fragmented remains untested.
Yazhou Zhang, J. Aaron Hogan, Jianjun Wang, Wenguang Sun, Yaojun Ye, Xin Liu, Minshu Song, Hang Sun   +7 more
wiley   +1 more source

Terrain-Aware Optical-SAR Image Registration Under Severe Geometric Distortions

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Accurate registration between optical and synthetic aperture radar (SAR) imagery remains challenging, particularly in rugged terrain, where SAR-specific geometric distortions significantly degrade correspondence reliability.
Zhida Bai, Yuming Xiang, Jinyang Chen, Zhonghua Hong, Shijie Liu, Xiaohua Tong   +5 more
doaj   +1 more source

Optimization of UAV Flight Missions in Steep Terrain

Remote Sensing, 2020
Unmanned aerial vehicle (UAV) photogrammetry is one of the most effective methods for capturing a terrain in smaller areas. Capturing a steep terrain is more complex than capturing a flat terrain.
Klemen Kozmus Trajkovski, Dejan Grigillo, Dušan Petrovič   +2 more
doaj   +1 more source

Comparative Assessment and Benchmarking of Metaheuristic Algorithms for Dynamic Photovoltaic Array Reconfiguration Under Diverse Shading Environments

Energy Science &Engineering, EarlyView.
ABSTRACT The solar photovoltaic (PV) installations, which are essential for renewable energy systems, are vulnerable to partial shading, resulting in considerable power losses and operational inefficiencies. The dynamic reconfiguration of PV arrays has become an effective strategy to mitigate these effects by adaptively modifying the array topology to ...
Manoharan Premkumar, Ravichandran Sowmya, Jagarapu S. V. Siva Kumar, Mustafa Abdullah   +3 more
wiley   +1 more source

Towards Water, Food and Energy Security: The Global Challenges and Possible Solutions for a Holistic Vision of Sustainability

Irrigation and Drainage, EarlyView.
ABSTRACT This invited paper gives an overview of the challenges the world is facing and offers a possible solution for water and food security within the holistic integrated concept of the water–energy–food (WEF) nexus. The paper summarizes the experience the author gained through working on various research projects at national and international ...
Ragab Ragab
wiley   +1 more source

Predicting glacier accumulation area distributions [PDF]

, 2005
A mass balance model based on energy balance at the terrain surface was developed and used to predict glacier accumulation areas in the Jotunheimen, Norway.
Arrell, Katherine E., Arrell, Katherine E   +1 more
core  

Behavioral responses of black bears to human presence and infrastructure in Yosemite National Park

The Journal of Wildlife Management, EarlyView.
Using GPS collar data from black bears in Yosemite National Park, we examined how bear spatiotemporal activity in relation to human development shifted during the COVID‐19 park closure in 2020. In the absence of visitors, bears maintained consistent landscape‐scale space use but altered fine‐scale spatial and temporal behaviors.
Jennifer R. Green, Caitlin Lee‐Roney, Kathleen Patrick, Rachel Mazur, Robert Lester, Erin Degutis, Ryan Leahy, Tal Avgar, Naomi B. Schwartz, Kaitlyn M. Gaynor   +9 more
wiley   +1 more source

Multi-Size Voxel Cube (MSVC) Algorithm—A Novel Method for Terrain Filtering from Dense Point Clouds Using a Deep Neural Network

Remote Sensing
When filtering highly rugged terrain from dense point clouds (particularly in technical applications such as civil engineering), the most widely used filtering approaches yield suboptimal results.
Martin Štroner, Martin Boušek, Jakub Kučera, Hana Váchová, Rudolf Urban   +4 more
doaj   +1 more source