Results 41 to 50 of about 3,296 (197)

Multi-Robot exploration for coal mine rescue based on the extension of undirected graph

open access: yesMeitan kexue jishu
After coal mine disasters, the environment deteriorates and rescue tasks are complex and arduous, resulting in numerous threats to the rescue personnel.
Linna ZHOU   +4 more
doaj   +1 more source

Estimation Accuracy Obviously Increased of Soil Organic Carbon Content Based on Habitat Patches Scale Using Interpretable Machine Learning in Southwest China

open access: yesLand Degradation &Development, EarlyView.
ABSTRACT Although machine learning models have been successfully applied to estimate soil organic carbon (SOC), the lack of interpretability research has resulted in the absence of mechanistic explanations for these models. Therefore, in this study, we adopted the following workflow: first, we divided the whole study area into several subregions using ...
Wei Zhou   +4 more
wiley   +1 more source

On‐Time Meal Delivery Assisted by Drone Resupply

open access: yesNaval Research Logistics (NRL), EarlyView.
ABSTRACT Ensuring timely delivery is crucial with the increasing competition in online meal delivery services. This requires the industry to adopt new technologies and the corresponding operational models, including the use of drones. Concerning the desired features of meal delivery, such as safety and reliability, we propose an operational model that ...
Wenqian Liu, Lindong Liu, Xiangtong Qi
wiley   +1 more source

A Heuristic Approach for a Real-World Electric Vehicle Routing Problem

open access: yesAlgorithms, 2019
To develop a non-polluting and sustainable city, urban administrators encourage logistics companies to use electric vehicles instead of conventional (i.e., fuel-based) vehicles for transportation services.
Mengting Zhao, Yuwei Lu
doaj   +1 more source

Leveraging Public Transit for Robotic Deliveries: A Column Generation Approach

open access: yesNaval Research Logistics (NRL), EarlyView.
ABSTRACT Autonomous mobile robots (AMRs) are small, electric, wheeled vehicles that operate at pedestrian speeds. In the last‐mile delivery service considered in this study, a fleet of AMRs is deployed across multiple recharging depots within a service area, from which they depart to perform point‐to‐point deliveries. We consider an operational setting
Yishay Shapira, Mor Kaspi
wiley   +1 more source

A Branch‐and‐Price Algorithm for the Symmetric Electric Traveling Salesman Problem

open access: yesNetworks, EarlyView.
ABSTRACT The Electric Traveling Salesman Problem (ETSP) is a variant of the well‐known TSP in which an electric vehicle must visit a set of customers minimizing the total cost of its route. The vehicle is assumed to be equipped with a battery of limited capacity that may need to be recharged along the route.
Alberto Ceselli   +2 more
wiley   +1 more source

From Data to Knowledge to Wisdom: Lessons Learned From the Vancouver Rat Project

open access: yesIntegrative Zoology, EarlyView.
A synthesis of 15 years of research conducted by the Vancouver Rat Project revealed that: (1) Pathogen ecology within rat colonies is the result of complex interactions among rats, pathogens, and vectors. (2) Local and global population structures influence rat and pathogen ecology.
Chelsea G. Himsworth, Kaylee A. Byers
wiley   +1 more source

Analysis of Swarm Intelligence Algorithms Used for Solving Vehicle Routing Problems

open access: yesКібернетика та комп'ютерні технології
Introduction. The Vehicle Routing Problem (VRP), first formulated by Danzig and Ramseur in 1959, has remained one of the most popular research subjects to date.
Maksym Yeher
doaj   +1 more source

Dragonfly taxonomic and functional responses to urbanized streams in southeastern Europe, with management recommendations

open access: yesInsect Conservation and Diversity, EarlyView.
Urbanization drives turnover in dragonfly species composition, traits, and habitat conservation value. Natural stream sections have a higher conservation value (higher DBI) due to presence of specialists. Properly managed urban streams can support diverse dragonfly assemblages.
Marina Vilenica   +5 more
wiley   +1 more source

Vidno radno pamćenje

open access: yesPsychological Topics, 2017
Vidno radno pamćenje (VRP) skupni je naziv za procese kratkotrajnog zadržavanja vidnih informacija s ciljem trenutnog obavljanja zadatka. Posljednjih su desetak godina istraživanja u području rezultirala brojnim revolucionarnim, kako bihevioralnim, tako ...
Ivan Tomić
doaj   +2 more sources

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