Results 71 to 80 of about 291 (165)

Optimizing Electric Vehicle Charging Infrastructure on Highways: A MILP Model for Balanced Demand Allocation

open access: yesInternational Journal of Energy Research, Volume 2026, Issue 1, 2026.
The strategic placement and sizing of electric vehicle (EV) charging stations on highways are critical for alleviating range anxiety and fostering widespread EV adoption. This paper presents a novel mixed‐integer linear programming (MILP) model for optimizing the location and capacity of charging stations along highway corridors.
Raka Jovanovic   +3 more
wiley   +1 more source

On Some Algorithmic and Structural Results on Flames

open access: yesJournal of Graph Theory, Volume 110, Issue 4, Page 392-397, December 2025.
ABSTRACT A directed graph F with a root node r is called a flame if for every vertex v other than r the local edge‐connectivity value λ F ( r , v ) from r to v is equal to ϱ F ( v ), the in‐degree of v. It is a classic, simple and beautiful result of Lovász [4] that every digraph D with a root node r has a spanning subgraph F that is a flame and the λ (
Dávid Szeszlér
wiley   +1 more source

A New Algorithm Framework for the Influence Maximization Problem Using Graph Clustering

open access: yesInformation
Given a social network modelled by a graph, the goal of the influence maximization problem is to find k vertices that maximize the number of active vertices through a process of diffusion. For this diffusion, the linear threshold model is considered.
Agostinho Agra, Jose Maria Samuco
doaj   +1 more source

Control Node Placement and Structural Controllability of Water Quality Dynamics in Drinking Networks

open access: yesWater Resources Research, Volume 61, Issue 12, December 2025.
Abstract Chlorine, the most widely used disinfectant, needs to be adequately distributed in water distribution networks (WDNs) to maintain consistent residual levels and ensure safe water. This is performed through control node injections at the treatment plant and via booster stations distributed across the WDNs.
Salma M. Elsherif, Ahmad F. Taha
wiley   +1 more source

A note on the submodular vertex cover problem with submodular penalties

open access: yesTheoretical Computer Science, 2017
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

Data and Competition: A Simple Framework

open access: yesThe RAND Journal of Economics, Volume 56, Issue 4, Page 494-510, Winter 2025.
ABSTRACT Does enhanced access to data foster or hinder competition among firms? Using a competition‐in‐utility framework that encompasses many situations where firms use data, we model data as a revenue‐shifter and identify two opposite effects: a mark‐up effect according to which data induces firms to compete harder, and a surplus‐extraction effect ...
Alexandre de Cornière, Greg Taylor
wiley   +1 more source

Influential Billboard Slot Selection Using Spatial Clustering and Pruned Submodularity Graph

open access: yesData Science and Engineering
Billboard Advertisement is a popular out-of-home advertising technique adopted by commercial houses. Companies own billboards and offer them to commercial houses on a payment basis.
Dildar Ali   +2 more
doaj   +1 more source

Multivariate Incomplete Information in the Mixture Model of Contests

open access: yesThe RAND Journal of Economics, Volume 56, Issue 4, Page 607-624, Winter 2025.
ABSTRACT A general mixture model of contests is introduced, combining stochastic performance and multivariate incomplete information. Performance is determined by a mixture distribution with endogenous weights on a good and bad distribution, respectively.
René Kirkegaard
wiley   +1 more source

Carbon Dioxide Storage Site Location and Transport Assignment Optimization for Sustainable Maritime Transport

open access: yesJournal of Marine Science and Engineering
Maritime carbon dioxide (CO2) transport plays a pivotal role in facilitating carbon capture and storage (CCS) systems by connecting emission sources with appropriate storage sites. This process often incurs significant transportation costs, which must be
Yanmeng Tao   +3 more
doaj   +1 more source

Symmetric Submodular Functions, Uncrossable Functions, and Structural Submodularity

open access: yesCoRR
Diestel, et al. (see Order 35 (2017), JCT-A 167 (2019), arXiv:1805.01439) introduced the notion of abstract separation systems that satisfy a submodularity property, and they call this structural submodularity. Williamson, Goemans, Mihail, and Vazirani (Combinatorica 15 (1995)) call a family of sets $\mathcal{F}$ uncrossable if the following holds: for
Miles Simmons   +2 more
openaire   +2 more sources

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