Results 21 to 30 of about 142,245 (260)

Optimizing the transportation route of fresh food in cold chain logistics by improved genetic algorithms

open access: yesInternational Journal of Metrology and Quality Engineering, 2019
At present, fresh food logistics transportation in China is still in the primary stage of development, transportation costs are rising, and cold chain logistics path design is unreasonable.
Peng Jing
doaj   +1 more source

Thermodynamic Metrics and Optimal Paths

open access: yesPhysical Review Letters, 2012
A fundamental problem in modern thermodynamics is how a molecular-scale machine performs useful work, while operating away from thermal equilibrium without excessive dissipation. To this end, we derive a friction tensor that induces a Riemannian manifold on the space of thermodynamic states.
Sivak, David A., Crooks, Gavin E.
openaire   +6 more sources

Online Personalized Learning Path Recommendation Based on Saltatory Evolution Ant Colony Optimization Algorithm

open access: yesMathematics, 2023
To solve the problems of slow convergence and low accuracy when the traditional ant colony optimization (ACO) algorithm is applied to online learning path recommendation problems, this study proposes an online personalized learning path recommendation ...
Shugang Li   +5 more
doaj   +1 more source

Multi-Path Policy Optimization

open access: yesInternational Joint Conference on Autonomous Agents and Multiagent Systems, 2020
Recent years have witnessed a tremendous improvement of deep reinforcement learning. However, a challenging problem is that an agent may suffer from inefficient exploration, particularly for on-policy methods. Previous exploration methods either rely on complex structure to estimate the novelty of states, or incur sensitive hyper-parameters causing ...
Ling Pan   +2 more
openaire   +3 more sources

Fast-RRT: A RRT-Based Optimal Path Finding Method

open access: yesApplied Sciences, 2021
As a sampling-based pathfinding algorithm, Rapidly Exploring Random Trees (RRT) has been widely used in motion planning problems due to the ability to find a feasible path quickly.
Zhenping Wu   +3 more
doaj   +1 more source

An optimal path to transition in a duct [PDF]

open access: yesPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2008
This paper is concerned with the transition of the laminar flow in a duct of square cross section. As in the similar case of pipe flow, the motion is linearly stable for all Reynolds numbers, rendering this flow a suitable candidate for a study of the ‘bypass’ path to turbulence.
BIAU D, BOTTARO, ALESSANDRO
openaire   +3 more sources

Automatic Vertical Parking Reference Trajectory Based on Improved Immune Shark Smell Optimization

open access: yesAlgorithms
Parking path optimization is the principal problem of automatic vertical parking (AVP); however, it is difficult to determine a collision avoiding, smooth, and accurate optimized parking path using traditional parking reference trajectory optimization ...
Yan Chen   +3 more
doaj   +1 more source

Path optimization of taxi carpooling. [PDF]

open access: yesPLoS One, 2018
The problem that passengers are hard to take taxis while empty driving rate is high widely exists under the traditional taxi operation mode. The implementation of taxi carpooling mode can alleviate the problem in a certain extent. The objective of this study is to optimize the taxi carpooling path.
Ma C, He R, Zhang W.
europepmc   +5 more sources

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

open access: yesScientific 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   +5 more
doaj   +1 more source

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

open access: yesAgriculture
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   +6 more
doaj   +1 more source

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