Results 121 to 130 of about 188 (174)

A formulation and a metaheuristic approach for the clustered vehicle routing problem with d‐relaxed priority rule

open access: yesInternational Transactions in Operational Research, Volume 33, Issue 6, Page 3714-3743, November 2026.
Abstract This paper investigates an extension of the vehicle routing problem in which, in addition to minimizing the distance traveled, the sequencing of customer visits is subject to precedence constraints that impose visiting priorities among customers.
Eduardo dos Santos Teixeira   +1 more
wiley   +1 more source

The impact of public drop‐off boxes and autonomous delivery robots in last‐mile delivery

open access: yesInternational Transactions in Operational Research, Volume 33, Issue 6, Page 3825-3854, November 2026.
Abstract The growing concern over emissions from last‐mile logistics is motivating the development of innovative delivery models aimed at reducing environmental impact and traffic congestion. To this end, we propose a last‐mile delivery scheme based on both public drop‐off boxes and autonomous delivery robots.
Gianpaolo Ghiani   +3 more
wiley   +1 more source

Smart selective navigator (SSN): enhancing urban winter road maintenance through optimized arc routing with hard turn restrictions

open access: yesInternational Transactions in Operational Research, Volume 33, Issue 5, Page 3580-3597, September 2026.
Abstract This paper introduces a novel heuristic method, the smart selective navigator (SSN), for addressing arc routing problems (ARPs) with a focus on integrating hard turn restrictions in urban winter operations. Addressing a significant gap in existing ARP methodologies, SSN seamlessly incorporates common side constraints, such as vehicle ...
Farhad Baghyari, Jaho Seo
wiley   +1 more source

Integrated routing of heavy electrical and diesel trucks in forest transports

open access: yesInternational Transactions in Operational Research, Volume 33, Issue 5, Page 3088-3109, September 2026.
Abstract Fossil‐free forestry transports are important to reach climate goals. In Sweden, road transports account for around 50% of the industry's CO2 emissions and almost 20% of the road freight volumes. Previous studies have shown that electrification is a cost‐effective way for carbon abatement, while at the same time the requirements for ...
Mikael Rönnqvist   +4 more
wiley   +1 more source

Invariant Measure and Universality of the 2D Yang–Mills Langevin Dynamic

open access: yesCommunications on Pure and Applied Mathematics, Volume 79, Issue 8, Page 1973-2102, August 2026.
ABSTRACT We prove that the Yang–Mills (YM) measure for the trivial principal bundle over the two‐dimensional torus, with any connected, compact structure group, is invariant for the associated renormalised Langevin dynamic. Our argument relies on a combination of regularity structures, lattice gauge‐fixing and Bourgain's method for invariant measures ...
Ilya Chevyrev, Hao Shen
wiley   +1 more source

An Improved Quasi‐Isometry Between Graphs of Bounded Cliquewidth and Graphs of Bounded Treewidth

open access: yesJournal of Graph Theory, Volume 112, Issue 4, Page 409-420, August 2026.
ABSTRACT Cliquewidth is a dense analogue of treewidth. It can be deduced from recent results by Hickingbotham [arXiv:2501.10840] and Nguyen, Scott, and Seymour [arXiv:2501.09839] that graphs of bounded cliquewidth are quasi‐isometric to graphs of bounded treewidth. We improve on this by showing that graphs of cliquewidth k admit a partition with ‘local,
Marc Distel
wiley   +1 more source

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