Results 201 to 210 of about 377,372 (346)

Subset‐Row Inequalities and Unreachability in Path‐Based Formulations for Vehicle Routing and Scheduling Problems

open access: yesNetworks, EarlyView.
ABSTRACT This work considers branch‐price‐and‐cut algorithms for variants of the vehicle‐routing problem in which subset‐row inequalities (SRIs) are used to strengthen the linear relaxation. SRIs often help to substantially reduce the size of the branch‐and‐bound search tree.
Stefan Faldum   +2 more
wiley   +1 more source

An Exact Method for Reliable Shortest Path Problems With Correlation

open access: yesNetworks, EarlyView.
ABSTRACT Shortest path problems often arise in contexts where travel times are uncertain. In these settings, reliable paths are often valued more than paths with lower expected travel times. This has led to several variants of reliable shortest path problems (RSPP) that handle travel time reliability differently. We propose an algorithmic framework for
Esteban Leiva   +3 more
wiley   +1 more source

Agronomic performance of coffee in response to framework pruning in cycles of the “safra zero”

open access: diamond, 2020
Pedro Lage Maia   +6 more
openalex   +2 more sources

Stem anatomy and ontogeny of vascular variants in Ipomoea asarifolia (Desr.) Roem. & Schult. (Convolvulaceae)

open access: yesNordic Journal of Botany, EarlyView.
An increase in stem thickness and ontogeny of successive cambia, intraxylary cambium, and inter‐and intraxylary phloem is elaborated for the first time in Ipomoea asarifolia (Desr.) Roem. & Schult. (Convolvulaceae). As the plants grew older, several small segments of cambium were initiated simultaneously external to the phloem formed by regular ...
Khyati D. Thacker   +3 more
wiley   +1 more source

Integrated field control of <i>Dactylopius opuntiae</i> (Cockerell) (Hemiptera: Dactylopiidae) in <i>Opuntia</i> spp. using biorational methods. [PDF]

open access: yesFront Microbiol
El Aalaoui M   +8 more
europepmc   +1 more source

Different from the start: key dimensions of seedling traits of central European temperate grassland species

open access: yesOikos, EarlyView.
Plant traits and their tradeoffs are major determinants of plant functions. Although trait‐based frameworks should apply to plant functioning at any life stage, they have been primarily established for adult plants. Therefore, we lack comprehensive trait‐based studies of seedlings across multiple species to prove which key dimensions of trait variation
Sarah Martin, Christiane Roscher
wiley   +1 more source

Online training and pruning of multi-wavelength photonic neural networks. [PDF]

open access: yesNanophotonics
Zhang J   +7 more
europepmc   +1 more source

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