Results 31 to 40 of about 865,445 (280)

Improved whale optimization for time-optimal and collision-free trajectory planning in dual-arm robots

Scientific Reports
To address the challenges of environmental and collaborative obstacle avoidance in dual-arm robot path optimization, a time-optimal trajectory optimization method based on a multi-strategy optimized Whale Optimization Algorithm (WOA) is proposed.
Ying Du, Chengbo Xu, Yunjia Wang, Yupeng Liu, Yuehui Wang, Jian Jin   +5 more
doaj   +1 more source

Three-Dimensional Path Planning for Unmanned Aerial Vehicles Based on Hybrid Multi-Strategy Dung Beetle Optimization Algorithm

Agriculture
In complex environments, three-dimensional path planning for agricultural UAVs involves the comprehensive consideration of multiple factors, including obstacle avoidance, path optimization, and computational efficiency, which significantly complicates ...
Hongmei Fei, Ruru Liu, Leilei Dong, Zhaohui Du, Xuening Liu, Tao Luo, Jie Zhou   +6 more
doaj   +1 more source

Optimal routing on complex networks

, 2006
We present a novel heuristic algorithm for routing optimization on complex networks. Previously proposed routing optimization algorithms aim at avoiding or reducing link overload. Our algorithm balances traffic on a network by minimizing the maximum node
B. Fortz, Bogdan Danila, John A. Marsh, Kevin E. Bassler, O. Allen, Yong Yu   +5 more
core   +1 more source

Optimal Learning Paths in Information Networks [PDF]

Scientific Reports, 2015
AbstractEach sphere of knowledge and information could be depicted as a complex mesh of correlated items. By properly exploiting these connections, innovative and more efficient navigation strategies could be defined, possibly leading to a faster learning process and an enduring retention of information.
Rodi, G. C., LORETO, Vittorio, SERVEDIO, VITO DOMENICO PIETRO, TRIA, FRANCESCA   +3 more
openaire   +5 more sources

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source

In vitro models of cancer‐associated fibroblast heterogeneity uncover subtype‐specific effects of CRISPR perturbations

Molecular Oncology, EarlyView.
Development of therapies targeting cancer‐associated fibroblasts (CAFs) necessitates preclinical model systems that faithfully represent CAF–tumor biology. We established an in vitro coculture system of patient‐derived pancreatic CAFs and tumor cell lines and demonstrated its recapitulation of primary CAF–tumor biology with single‐cell transcriptomics ...
Elysia Saputra, Shamsudheen Karuthedath Vellarikkal, Lixia Li, Hong Sun, Khoa Nguyen, Amber Montano, Suchitra Natarajan, Federica Piccioni, Alex Michael Tamburino, Xin Yu, Aleksandra Katarzyna Olow   +10 more
wiley   +1 more source

Ship path planning and tracking based on rapidly exploring random tree star and convex optimization

Zhongguo Jianchuan Yanjiu
ObjectivesTo address the challenges of path planning and tracking for underactuated ships in obstacle-filled waters, this paper proposes a ship path planning and tracking algorithm based on the rapidly exploring random tree (RRT*) and convex optimization.
Chang ZHOU, Te YU, Jiapeng LIU, Dihua LU, Qingshan ZENG   +4 more
doaj   +1 more source

Path optimization method for the sign problem

, 2017
We propose a path optimization method (POM) to evade the sign problem in the Monte-Carlo calculations for complex actions. Among many approaches to the sign problem, the Lefschetz-thimble path-integral method and the complex Langevin method are promising
Kashiwa, Kouji, Mori, Yuto, Ohnishi, Akira   +2 more
core   +1 more source

Infrared laser sampling of low volumes combined with shotgun lipidomics reveals lipid markers in palatine tonsil carcinoma

Molecular Oncology, EarlyView.
Nanosecond infrared laser (NIRL) low‐volume sampling combined with shotgun lipidomics uncovers distinct lipidome alterations in oropharyngeal squamous cell carcinoma (OPSCC) of the palatine tonsil. Several lipid species consistently differentiate tumor from healthy tissue, highlighting their potential as diagnostic markers.
Leonard Kerkhoff, Manuela Moritz, Dennis Eggert, Anna Worthmann, Joerg Heeren, Henrike Zech, Till S. Clauditz, Waldemar Wilczak, Hartmut Schlüter, Christian S. Betz, Arne Böttcher, Jan Hahn   +11 more
wiley   +1 more source

An Improved A-Star Ship Path-Planning Algorithm Considering Current, Water Depth, and Traffic Separation Rules

Journal of Marine Science and Engineering, 2023
The influence of the maritime environment such as water currents, water depth, and traffic separation rules should be considered when conducting ship path planning.
Rong Zhen, Qiyong Gu, Ziqiang Shi, Yongfeng Suo   +3 more
doaj   +1 more source