Results 31 to 40 of about 5,343,110 (254)

A Column Generation Based Hyper-Heuristic to the Bus Driver Scheduling Problem

open access: yesDiscrete Dynamics in Nature and Society, 2015
Public transit providers are facing continuous pressure to improve service quality and reduce operating costs. Bus driver scheduling is among the most studied problems in this area.
Hong Li, Ying Wang, Shi Li, Sujian Li
doaj   +1 more source

Urban integrated energy system stochastic robust optimization scheduling under multiple uncertainties

open access: yesEnergy Reports, 2023
The uncertainties of the wind power generation, solar power generation, electricity load, and heat load bring difficulties to the optimal scheduling of the urban integrated energy system (UIES), which influence its secure and reliable operation.
Dongxu Zhou, Zhengyi Zhu
doaj   +1 more source

Golgi enzymes are retrieved from the plasma membrane to the trans‐Golgi network

open access: yesFEBS Letters, EarlyView.
Golgi enzymes are traditionally considered resident proteins retained within the Golgi apparatus. Here, we demonstrate that a subset transiently reaches the cell surface and is subsequently retrieved to the trans‐Golgi network via retrograde transport. Using a nanobody‐based toolkit, we uncover a dynamic trafficking cycle of several Golgi enzymes.
Dominik P. Buser, Tina Junne
wiley   +1 more source

Research on joint optimization model and algorithm of multi‐area generation and reserve with considering its availability

open access: yesIET Generation, Transmission & Distribution, 2022
The reserve sharing amongst the interconnected power systems will facilitate the improvements on their anti‐disturbance capability and operating economy.
Dan Xu   +4 more
doaj   +1 more source

Branch and Price Algorithm for Multi-Trip Vehicle Routing with a Variable Number of Wagons and Time Windows

open access: yesAlgorithms, 2022
Motivated by the transportation needs of modern-day retailers, we consider a variant of the vehicle routing problem with time windows in which each truck has a variable capacity. In our model, each vehicle can bring one or more wagons.
Leila Karimi, Chowdhury Nawrin Ferdous
doaj   +1 more source

Functional comparison of EncB and EncC cargo proteins in iron storage within the Myxococcus xanthus encapsulin

open access: yesFEBS Letters, EarlyView.
Encapsulins are protein nanocompartments that play an important role in iron storage. In the Myxococcus xanthus encapsulin system, two cargo proteins called EncB and EncC contribute to iron mineralization. Here, we show that EncB and EncC generate iron‐containing minerals with distinct chemical compositions, suggesting that the composition of stored ...
Harry B. McDowell   +2 more
wiley   +1 more source

Set Covering Model in Solving Multiple Cutting Stock Problem

open access: yesScience and Technology Indonesia, 2020
Cutting Stock Problem (CSP) is the determination of how to cut stocks into items with certain cutting rules. A diverse set of stocks is called multiple stock CSP.
Sisca Octarina   +3 more
doaj   +1 more source

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

open access: yesFEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge   +6 more
wiley   +1 more source

A genetic column generation algorithm for sustainable spare part delivery: Application to the Sydney DropPoint Network [PDF]

open access: yes, 2018
Modern-day logistics companies require increasingly shorter lead-times in order to cater for the increasing popularity of on-demand services. There is consequently an urgent need for fast scheduling algorithms to provide high quality, real-time ...
Shukla, N   +17 more
core   +1 more source

A Column-Generation-Based Exact Algorithm to Solve the Full-Truckload Vehicle-Routing Problem

open access: yesMathematics
This study addresses a specialized variant of the full-truckload delivery problem inspired by a Turkish logistics firm that operates in the liquid transportation sector.
Toygar Emre, Rizvan Erol
doaj   +1 more source

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