Results 21 to 30 of about 5,343,110 (254)

High-Speed Railway EMUs’ Circulation Plan Optimization: A Two-Stage Optimization Algorithm Based on Column Generation

open access: yesIEEE Access, 2020
Considering the characteristics of China's high-speed railway network and the allocation structure of Electric Multiple Units (EMUs), the EMUs operation management mode provides an effective technical route for EMUs route planning optimization. To reduce
Wen-Jun Li   +4 more
doaj   +1 more source

An Improved Column Generation Algorithm Based on Minimum-Norm Multipliers

open access: yesMathematics
Column generation is a fundamental technique for solving large-scale combinatorial optimization problems such as unit commitment and vehicle routing, yet its performance is often limited by dual oscillation.
Dingfang Su   +3 more
doaj   +1 more source

Raw Material Purchasing Optimization Using Column Generation

open access: yesApplied Sciences
The raw material purchasing (RMP) problem is to determine the purchasing quantities of raw materials in given periods or cycles. Raw material purchasing optimization is crucial for large-scale steel plants because it is closely related to the supply of ...
Zhen Gao   +3 more
doaj   +1 more source

A practical model of routing problems for automated guided vehicles with acceleration and deceleration

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2014
We consider an optimization of conflict-free routing problems for automated guided vehicles (AGV) with acceleration and deceleration. A continuous time model is developed to represent the dynamics of vehicles.
Tatsushi NISHI   +3 more
doaj   +1 more source

Routing optimization for UAV-rider joint delivery in multi-center networks

open access: yesShenzhen Daxue xuebao. Ligong ban
To reduce operating costs and improve fulfillment efficiency in urban on-demand logistics, this study investigates the routing optimization problem for unmanned aerial vehicle (UAV)-rider joint delivery in multi-center networks with limited UAV capacity.
Bai Yaozhen, Li Xueyou, Qi Mingyao
doaj   +1 more source

Sustainable Production Scheduling with On-Site Intermittent Renewable Energy and Demand-Side Management: A Feed-Animal Case Study

open access: yesEnergies, 2023
By shifting towards renewable energy sources, manufacturing facilities can significantly reduce their carbon footprint. This environmental issue can be addressed by developing sustainable production through on-site renewable electricity generation and ...
Mohamed Habib Jabeur   +2 more
doaj   +1 more source

Salmonella lipopolysaccharide‐containing supported lipid bilayers as platforms to study bacteriophage interactions

open access: yesFEBS Letters, EarlyView.
We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace   +6 more
wiley   +1 more source

An efficient column generation heuristic for vehicle routing with multiple use of vehicles for a rental business

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2016
Optimization of daily vehicle routes with deliveries and pickups as well as multiple use of vehicles for a rental business is considered. The problem is formulated as a variant of generalized set covering problems in which variables correspond to ...
Takuya HIROTA, Susumu MORITO, Kento HARA
doaj   +1 more source

Branch and price for submodular bin packing

open access: yesEURO Journal on Computational Optimization, 2023
The Submodular Bin Packing (SMBP) problem asks for packing unsplittable items into a minimal number of bins for which the capacity utilization function is submodular.
Liding Xu   +3 more
doaj   +1 more source

Peripheral lysosomes recruit PLEKHG3 to focal adhesions and restrain protrusion dynamics

open access: yesFEBS Letters, EarlyView.
Proximity‐dependent labeling at the LAMTOR complex revealed the Rho GEF PLEKHG3 as a lysosome‐proximal protein directing the study toward the influence of lysosome positioning on actin dynamics and cell motility. We show that PLEKHG3 colocalizes with lysosomes at focal adhesion sites and observe that forced peripheral dispersion of lysosomes hinders ...
Rainer Ettelt   +8 more
wiley   +1 more source

Home - About - Disclaimer - Privacy