Results 71 to 80 of about 2,264,079 (275)

On Power-Absorption Degrees of Freedom for Point Absorber Wave Energy Converters

open access: yesJournal of Marine Science and Engineering, 2020
Point absorbers are extensively employed in wave energy conversion. In this work, we studied the point absorber with the buoy of a vertical cylindrical shape.
Jinming Wu
doaj   +1 more source

Sample Kurtosis, GARCH-t and the Degrees of Freedom Issue [PDF]

open access: yes
Econometric modeling based on the Student’s t distribution introduces an additional parameter — the degree of freedom. In this paper we use a simulation study to investigate the ability of (i) the GARCH-t model (Bollerslev, 1987) to estimate the true ...
Maria S. Heracleous
core  

Hopfield Neural Networks for Online Constrained Parameter Estimation With Time‐Varying Dynamics and Disturbances

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView.
This paper proposes two projector‐based Hopfield neural network (HNN) estimators for online, constrained parameter estimation under time‐varying data, additive disturbances, and slowly drifting physical parameters. The first is a constraint‐aware HNN that enforces linear equalities and inequalities (via slack neurons) and continuously tracks the ...
Miguel Pedro Silva
wiley   +1 more source

METAMORPHIC DESIGN AND DEGREE OF FREEDOM ANALYSIS ABOUT PARALLEL MECHANISM FOR ANKLE REHABILITATION

open access: yesJixie qiangdu, 2021
In order to achieve the movement demands of sprained ankle patients in different rehabilitation stages,this paper proposes a kind of metamorphic parallel mechanism for ankle rehabilitation,which can obtain the switch of 3 SPS/PS motion and 3 SPS/S motion
CHEN GengBiao, YI KuanHan
doaj  

A Two-Degree of Freedom Variable Stiffness Actuator Based on the MACCEPA Concept

open access: yesActuators, 2014
The current state-of-the-art of variable stiffness actuators consists mostly of different concepts for single-degree of freedom joints. However, in bio-inspired robotic applications, multiple degrees of freedom variable stiffness actuators are often ...
Maarten Weckx   +6 more
doaj   +1 more source

Computer simulation and design of a three degree-of-freedom shoulder module [PDF]

open access: yes, 1989
An in-depth kinematic analysis of a three degree of freedom fully-parallel robotic shoulder module is presented. The major goal of the analysis is to determine appropriate link dimensions which will provide a maximized workspace along with desirable ...
Marco, David   +2 more
core   +1 more source

Adaptable Tile‐Based Pneumatic Origami through Structurally Coupled Localized Actuation

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents tile‐based pneumatic origami structures with rigid tiles and flexible fabric creases, achieving adaptable properties including morphing shape, selective multistability, and tunable stiffness. Independently pressurized folding bladders at each crease enable structurally coupled localized actuation of origami structures.
Tiantian Li, Jonathan Luntz, Diann Brei
wiley   +1 more source

degrees of freedom

open access: yes, 2014
Citation: 'degrees of freedom' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.D01572 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +2 more sources

Electronic scanning of 2-channel monopulse patterns [PDF]

open access: yes, 1970
Scanning method involves separation of scanning capability into two independent degrees of freedom. One degree of freedom corresponds to azimuthal scanning and other to elevation scanning on spiral coordinate axes.
Schmidt, R. F.
core   +1 more source

Relative information encoded in the degree of entanglement to discriminate bipartite states

open access: yes, 2006
It has been recently shown (Bartlett et al. 2003) that information encoded into relative degrees of freedom enables communication without a common reference frame using entangled bipartite states.
Bagan   +21 more
core   +1 more source

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