Results 71 to 80 of about 65,702 (300)

Gate‐Programmable Linearization of Atomically Thin Nanoelectromechanical Resonators via Duffing Nonlinearity Cancellation

open access: yesAdvanced Functional Materials, EarlyView.
Gate bias is used to cancel Duffing nonlinearity in atomically thin MoS2 drumhead resonators, switching their response from hardening to softening and creating a nearly linear operating point. This electrical control suppresses hysteresis, enables stronger linear drive, and improves signal‐to‐noise ratio, offering a practical route to stable 2D NEMS ...
Pengcheng Zhang   +3 more
wiley   +1 more source

Making Warehouse Logistics Smart by Effective Placement Strategy Based on Genetic Algorithms

open access: yesTransport and Telecommunication, 2019
Supply chain executives are faced with the challenge of reducing labor costs. Travel time or picking efficiency can easily account for 50% or more of order picking time.
Avdekins Aleksandrs, Savrasovs Mihails
doaj   +1 more source

Joint Order Batching, Routing, and Picker Scheduling in Manual Order Picking Systems [PDF]

open access: yes, 2017
Upcoming e-commerce markets force warehouses to handle a larger number of orders, while the time to pick orders has shortened. Order picking management, in particular organizing efficient and effective systems to retrieve items from storage locations ...
Braekers, Kris   +3 more
core   +2 more sources

Spin and Charge Control of Topological End States in Chiral Graphene Nanoribbons on a 2D Ferromagnet

open access: yesAdvanced Materials, EarlyView.
Chiral graphene nanoribbons on a ferromagnetic gadolinium‐gold surface alloy display tunable spin and charge states at their termini. Atomic work function variations and exchange fields enabe transitions between singlet, doublet, and triplet configurations.
Leonard Edens   +8 more
wiley   +1 more source

Resolving the Structural Duality of Graphene Grain Boundaries

open access: yesAdvanced Materials, EarlyView.
Cantilever ncAFM resolves the atomic structure of grain boundaries in graphene, revealing coexisting stable and metastable types. Both contain pentagon/heptagon defects, but metastable GBs show irregular geometries. Modeling shows metastable GBs form under compression, exhibiting vertical corrugation, while stable GBs are flat.
Haojie Guo   +11 more
wiley   +1 more source

Evaluation and selection of an order picking tool for distribution center in a retail company [PDF]

open access: yes, 2019
En este documento se presentó un estudio en una compañía de retail, actualmente en un ambicioso proceso de expansión en Colombia y que cuenta con más de 600 puntos de venta a nivel nacional, los cuales son abastecidos por seis (6) centros de distribución.
Villada Torres, Carlos Andrés
core  

Defining a Storage-assignment Strategy for Precedence-constrained Order Picking

open access: yesOperations Research and Decisions, 2021
A zero-one quadratic assignment model has been proposed for dealing with the storage location assignment problem when there are weight constraints. Our analysis shows that operations can be improved using our model.
Maria A.M. Trindade   +2 more
doaj  

Order Picking Area Layout and Its Impact on the Efficiency of Order Picking Process

open access: yesJournal of Traffic and Logistics Engineering, 2013
Paper deals with the efficiency of the order picking process according to the order picking area layout. The conducted research addresses the problem of congestion in the order picking area, which affects the locking time of workers during order picking.
Michał Kłodawski, Jolanta Żak
openaire   +1 more source

Tough, Ductile, and Strong Hard‐Soft Cementitious Composite Enabled by Multi‐Material Additive Manufacturing

open access: yesAdvanced Materials, EarlyView.
Drawing inspiration from the layered hard‐soft architecture found in sea sponges, this work establishes a new framework for architected cementitious composites (ACC) through multi‐material additive manufacturing (MMAM) process. The integration of mortar and elastomer phases into layered architectures enables synergistic toughening mechanisms, including
Aimane Najmeddine   +5 more
wiley   +1 more source

Measuring the Hall Effect in Hysteretic Materials

open access: yesAdvanced Materials, EarlyView.
The authors highlight common pitfalls in measuring the Hall effect: in hysteretic magnets, improper data processing can create signals that look exotic but are not real. This Perspective explains the origin of these artifacts and presents practical measurement strategies that help researchers identify reliable Hall responses in complex magnetic ...
Jaime M. Moya   +6 more
wiley   +1 more source

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