Results 181 to 190 of about 6,408 (248)

Planar Wide-Angle Imaging System with a Single-Layer SiC Metalens. [PDF]

open access: yesNanomaterials (Basel)
Liu Y   +4 more
europepmc   +1 more source

Investigating Mixed‐Integer Programming Approaches for the p$$ p $$‐α$$ \alpha $$‐Closest‐Center Problem

open access: yesNetworks, EarlyView.
ABSTRACT In this work, we introduce and study the p$$ p $$‐α$$ \alpha $$‐closest‐center problem (pα$$ p\alpha $$CCP), which is a generalization of the p$$ p $$‐second‐center problem, a recently emerged variant of the classical (discrete) p‐center problem.
Elisabeth Gaar   +2 more
wiley   +1 more source

Precise 3D Tracking of Highly Non-Planar Eukaryotic Flagellar Beating Patterns Using Digital Holographic Microscopy. [PDF]

open access: yesSmall Methods
Nienaltowski P   +7 more
europepmc   +1 more source

Interdiction Models and Heuristics for Graph Propagation

open access: yesNetworks, EarlyView.
ABSTRACT Given a graph G=(V,E)$$ G=\left(V,E\right) $$ and a set S⊂V$$ S\subset V $$ of activated/infected nodes, we consider the problem of determining the set of c$$ c $$ nodes that minimizes the network propagation on the subgraph that results from the removal of those c$$ c $$ nodes. To measure network propagation, we assume that a node i$$ i $$ is
Agostinho Agra, José Maria Samuco
wiley   +1 more source

Geometrically Optimized FDM-Printed Conductive TPU Bend Sensors for Hand Rehabilitation. [PDF]

open access: yesSensors (Basel)
Özkurt A   +4 more
europepmc   +1 more source

A Branch‐and‐Price Algorithm for the Symmetric Electric Traveling Salesman Problem

open access: yesNetworks, EarlyView.
ABSTRACT The Electric Traveling Salesman Problem (ETSP) is a variant of the well‐known TSP in which an electric vehicle must visit a set of customers minimizing the total cost of its route. The vehicle is assumed to be equipped with a battery of limited capacity that may need to be recharged along the route.
Alberto Ceselli   +2 more
wiley   +1 more source

Opening the Black Box of Nonprofit Reputation and Volunteer Attraction With Supervised Machine Learning

open access: yesNonprofit Management and Leadership, EarlyView.
ABSTRACT With the aim to explore the potential of machine learning for nonprofit research, this article contrasts traditional linear regression with four contemporary supervised machine learning approaches. Concretely, we predict (1) reputation ratings and (2) the total number of volunteers for 4021 non‐profit organizations in the U.S.
Moritz Schmid   +2 more
wiley   +1 more source

Approximate Reachability for Feedback Linearizable Systems

open access: yesOptimal Control Applications and Methods, EarlyView.
The backwards reachable set for a dynamical system is the set of states for which there exists a constraint admissible trajectory that reaches a given terminal set. Conventional grid‐based approaches for computing these sets are intractable for many applications.
Vincent Liu   +2 more
wiley   +1 more source

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