Results 51 to 60 of about 3,683 (185)

Mapping School Accessibility in Africa: High‐Resolution Spatial Analysis Uncovers Inequalities in Education Access

open access: yesSustainable Development, EarlyView.
ABSTRACT Education is a cornerstone of sustainable development, yet large disparities in access persist across and within countries—particularly in Africa, where millions remain underserved. Among several factors influencing educational participation, physical accessibility to schools (in terms of travel time) is not comprehensively understood ...
Diana Jaramillo‐Araujo, Jim W. Hall
wiley   +1 more source

Dynamic route planning for emergency escape in coal mines using a Dijkstra-ACO hybrid algorithm

open access: yesGong-kuang zidonghua
Emergency escape route planning in coal mines must adapt promptly to the changing underground environment. Traditional methods, relying on static networks with fixed weights, lack the flexibility needed for real-time adjustments in response to dynamic ...
LU Guoju, SHI Wenfang
doaj   +1 more source

The company you keep: The influence of popular delinquents and deviant brokers on offending trajectories

open access: yesCriminology, EarlyView.
Abstract Research on how delinquent peer associations affect individuals’ life courses is limited. This paper addresses this gap by examining delinquent peer network characteristics and their impact on offending trajectories through social network analysis (SNA) and group‐based trajectory modeling (GBTM).
Daniel Trovato
wiley   +1 more source

Volume Quantization with Flexible Singularities for Hexahedral Meshing

open access: yesComputer Graphics Forum, EarlyView.
Abstract We present a novel algorithm for quantization and subsequent hexahedral mesh generation from seamless volumetric maps. Quantization is the process of choosing integers that represent the numbers of hexahedral elements to be placed in each region of the volume, and transforming the seamless map into an integer‐grid map matching that choice ...
H. Brückler, M. Campen
wiley   +1 more source

Differentiable Randers‐Finsler Eikonal Solvers

open access: yesComputer Graphics Forum, EarlyView.
Abstract Fast and differentiable solvers for anisotropic and asymmetric distance fields are a key primitive in geometry processing, enabling gradient‐based optimization over metrics, drift fields, and downstream objectives that depend on geodesic distances and geodesics.
Barak Gahtan   +2 more
wiley   +1 more source

Dijkstra’s Algorithm on Semigraph

open access: yesWSEAS TRANSACTIONS ON COMPUTER RESEARCH
The study of graph theory helps us in understanding the relationship between two nodes. Semigraphs are generalizations of graphs where the relationship occurs between more than two nodes. It provides solutions to issues with layout, matching, networking, optimization, etc.
Pranjal Sen   +4 more
openaire   +1 more source

Multi‐objective maritime vessel routing with safety considerations

open access: yesInternational Transactions in Operational Research, Volume 34, Issue 1, Page 337-371, January 2027.
Abstract The routing of maritime vessels is a challenging optimization problem that involves finding an adequate balance between conflicting and multiple objectives. This paper proposes a methodology based on inverse optimization to find appropriate objective weights that account for conflicting objectives. To formulate the inverse optimization problem,
Nazanin Sharif   +4 more
wiley   +1 more source

Performance Analysis of Dijkstra-Based Weighted Sum Minimization Routing Algorithm for Wireless Mesh Networks

open access: yesModelling and Simulation in Engineering, 2014
Multiobjective optimization methods for routing in static wireless mesh networks (WMNs), with more than one QoS measure to be optimized, are highly challenging. To optimize the performance for a given end-to-end route in a static network, the most common
Nuha A. S. Alwan
doaj   +1 more source

An optimal trajectory planning algorithm for autonomous trucks: Architecture, algorithm, and experiment

open access: yesInternational Journal of Advanced Robotic Systems, 2020
Safe lane changing of the dynamic industrial park and port scenarios with autonomous trucks involves the problem of planning an effective and smooth trajectory.
Feng Zhang, Ranfei Xia, Xinxing Chen
doaj   +1 more source

Talking trails: LLM‐enhanced spatiotemporal trajectory modeling for E‐bike delivery route planning

open access: yesAI Magazine, Volume 47, Issue 3, Fall 2026.
Abstract Electric bicycles (e‐bikes) have become the dominant mode of transportation in China's urban instant delivery industry. However, many riders lack the experience to navigate complex traffic networks and diverse road conditions, leading to reduced delivery efficiency.
Zhao Li   +3 more
wiley   +1 more source

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