Results 71 to 80 of about 706,134 (292)

An Active Knee–Ankle–Foot Orthosis With Torque‐Dense, Low‐Impedance Knee Actuation

open access: yesAdvanced Intelligent Systems, EarlyView.
This article presents the simulation, design, and clinical validation of a robotic active KAFO with torque‐sensitive actuation. By passively and continuously adapting the transmission ratio in response to the knee torque, the torque‐sensitive actuator overcomes the tradeoff between torque, weight, and impedance observed in conventional robot actuators,
Brendon Ortolano   +4 more
wiley   +1 more source

Preferential trading in agriculture: New insights from a structural gravity analysis and machine learning

open access: yesAmerican Journal of Agricultural Economics, EarlyView.
Abstract Preferential trade agreements (PTAs) contain various non‐tariff provisions, yet identifying their trade effects remains challenging because these commitments are high‐dimensional and strongly correlated within agreements. We estimated a theory‐consistent structural gravity model with domestic flows for 26 agricultural subsectors over 1988–2017
Dongin Kim, Sandro Steinbach
wiley   +1 more source

Overset grid techniques for the simulation of supersonic jet noise [PDF]

open access: yes, 2009
In the present research project the method of overset grid techniques is used to simulate a compressible supersonic jet and its emanated aeroacoustic noise field. The computational domain includes the geometry of the
SCHULZE, Jan, SESTERHENN, Joern
core  

Farm labor scarcity and its uneven impacts on crop producers in the United States

open access: yesAmerican Journal of Agricultural Economics, EarlyView.
Abstract This study is the first to evaluate the impacts of farm labor scarcity on producers in the United States across different crop production systems. Between 2002 and 2017, we disentangle the effects of labor scarcity from the impacts of rising commodity demand, technological change, and supply of other inputs on labor market outcomes.
Srabashi Ray   +4 more
wiley   +1 more source

Hydrodynamic analysis of a spar-buoy wind turbine using computational fluid dynamics for design optimization

open access: yesCambridge Prisms: Water
The present work investigates the hydrodynamic behaviour of a spar-buoy floating platform, widely adopted for deep-water applications due to its enhanced stability, through numerical simulations performed with the open-source Computational Fluid Dynamics
Alessandro Imbò   +2 more
doaj   +1 more source

On structural controllability in complex networks with periodic switching topologies

open access: yesAsian Journal of Control, EarlyView.
Abstract This paper investigates the structural controllability of complex networks with periodic switching topologies. First, several graph transformations that preserve structural controllability are demonstrated. Based on the n‐walk theory, a criterion is derived that determines structural controllability by analyzing only the joint graph within a ...
Jingrui Hou   +3 more
wiley   +1 more source

RANS simulations using overset meshes [PDF]

open access: yes, 2011
The paper describes the implementation of the overset grids approach into a finite volume Navier-Stokes simulation tool. The algorithm is capable of handling an arbitrary number of overset grids using a priority-aware algorithm to determine the grid ...
Rung, T.   +3 more
core   +1 more source

Dynamic Spillovers Between FinTech, Blockchain, and Green Finance: A Quantile Connectedness Approach

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT This paper explores how financial innovation and environmental sustainability intersect by analyzing spillovers between FinTech, blockchain energy use, and green finance. Using a Quantile Vector Autoregression (QVAR) framework, we examine weekly data from 2018 to 2024 across 11 digital, environmental, and macro‐financial indices.
Mehmet Sahiner, Sisi Sung, James Devlin
wiley   +1 more source

OVERGRID: A Unified Overset Grid Generation Graphical Interface

open access: yes, 1999
This paper presents a unified graphical interface and gridding strategy for performing overset grid generation. The interface called OVERGRID has been specifically designed to follow an efficient overset gridding strategy, and contains general grid ...
Chan, William M., Akien, Edwin W.
core  

Hidden in Plain Sight: Gender Diversity at the Innovation Core and Environmental Innovation

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT This paper estimates the effect of gender diversity on firm‐level environmental innovation. We use a large Spanish panel data and construct an inverse‐covariance‐weighted environmental innovation index. Identification comes from persistent within‐firm increases in women's representation, measured relative to a 2‐year rolling pre‐event baseline.
Fayssal Ayad   +2 more
wiley   +1 more source

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