Results 121 to 130 of about 773,474 (304)

An exact method for vehicle routing problem with backhaul discounts in urban express delivery network

open access: yesCleaner Logistics and Supply Chain
The surge in e-commerce has led to an increased demand for urban express services, requiring the strategic development of delivery networks that are both efficient and cost-effective.
Jinqiu Zhao   +6 more
doaj   +1 more source

Branch-and-Price and Heuristic Column Generation for the Generalized Truck-and-Trailer Routing Problem || Branch-and-Price y generación heurística de columnas para el problema generalizado de rutas de trenes de carretera [PDF]

open access: yesRevista de Métodos Cuantitativos para la Economía y la Empresa, 2011
The generalized truck-and-trailer routing problem (GTTRP) constitutes a unified model for vehicle routing problems with trailers and a fixed lorry-trailer assignment.
Drexl, Michael
doaj  

The impact of switching costs on closing of service branches [PDF]

open access: yes
The paper deals with the optimal location of service branches. Consumers can receive service from different firms and branches offering substitute services. The consumer chooses the firm and the branch.
Baron, Mira G.
core  

Smart, Bio‐Inspired Polymers and Bio‐Based Molecules Modified by Zwitterionic Motifs to Design Next‐Generation Materials for Medical Applications

open access: yesAdvanced Functional Materials, EarlyView.
Bio‐based and (semi‐)synthetic zwitterion‐modified novel materials and fully synthetic next‐generation alternatives show the importance of material design for different biomedical applications. The zwitterionic character affects the physiochemical behavior of the material and deepens the understanding of chemical interaction mechanisms within the ...
Theresa M. Lutz   +3 more
wiley   +1 more source

Cool Kitchen: Processing Starch and Eggshell Powder into Sustainable Coatings for Passive Daytime Cooling

open access: yesAdvanced Functional Materials, EarlyView.
A food‐grade cooling composite made from starch and recycled eggshell powder offers a scalable, ultra‐low‐cost solution for passive daytime radiative cooling. Easily prepared using basic kitchen tools, this material empowers communities, even in areas with limited infrastructure, to stay cooler during worsening summer heat waves.
Qimeng Song   +3 more
wiley   +1 more source

A New Dantzig-Wolfe Reformulation And Branch-And-Price Algorithm For The Capacitated Lot Sizing Problem With Set Up Times [PDF]

open access: yes, 2003
The textbook Dantzig-Wolfe decomposition for the Capacitated Lot Sizing Problem (CLSP),as already proposed by Manne in 1958, has an important structural deficiency.
Degraeve, Z. (Zeger), Jans, R.F. (Raf)
core   +1 more source

Emergent Spin‐Glass Behavior in an Iron(II)‐Based Metal–Organic Framework Glass

open access: yesAdvanced Functional Materials, EarlyView.
A one‐pot, solvent‐free synthesis yields an Fe2+‐based metal‐organic framework (MOF) glass featuring a continuous random network structure. The material exhibits spin‐glass freezing at 14 K, driven by topological‐disorder and short‐range magnetic frustration, showcasing the potential of MOF glasses as a plattform for cooperative magnetic phenomena in ...
Chinmoy Das   +8 more
wiley   +1 more source

The pass-through of energy commodity price volatility along the pricing chain in the euro area: A disaggregate approach

open access: yesInternational Review of Economics & Finance
This paper extends the existing literature by assessing the pass-through of energy commodity price volatility to producer and consumer price volatility in the euro area at a disaggregated level.
César Castro   +1 more
doaj   +1 more source

PROJECTED COSTS AND RETURNS FOR BEEF CATTLE, DAIRY PRODUCTION, SWINE PRODUCTION AND FORAGE CROPS IN LOUISIANA, 1997 [PDF]

open access: yes
Data for this report are based on Louisiana Agricultural Experiment Station research results and selected surveys. The procedure used in this report was to apply new machinery and other current input price data to production practice data.
Boucher, Robert W.   +1 more
core   +1 more source

Digital Actuation Control of Soft Robotic Origami With Self‐Folding Liquid Crystal Elastomer Hinges

open access: yesAdvanced Functional Materials, EarlyView.
Self‐folding soft‐rigid hybrid robotic origami is enabled by liquid crystal elastomer actuators with embedded Joule heating and closed‐loop digital control. Digitally addressable hinges provide reversible and programmable transitions between distinct folded states while maintaining actuation performance at high cycle counts (over 1500).
David C. Bershadsky   +3 more
wiley   +1 more source

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