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Analytical and Experimental Investigation of a Curved Piezoelectric Energy Harvester

open access: yesSensors, 2022
Piezoelectric energy harvesters have traditionally taken the form of base excited cantilevers. However, there is a growing body of research into the use of curved piezoelectric transducers for energy harvesting. The novel contribution of this paper is an
Talieh Pourashraf   +2 more
doaj   +1 more source

Anterior diaphyseal curvature of the femur and tibia has biomechanical consequences during unloaded uphill locomotion

open access: yesFrontiers in Ecology and Evolution, 2023
The biomechanics of limb bone curvature are complex, and though anterior curvature clearly exhibits some relationship with behavior, the mechanisms shaping it and its biomechanical purpose remain unclear. Among both Neanderthals and humans, anterior limb
Alison A. Murray   +3 more
doaj   +1 more source

Abnormal Seebeck Effect in Vertically Stacked 2D/2D PtSe2/PtSe2 Homostructure

open access: yesAdvanced Science, 2022
When a thermoelectric (TE) material is deposited with a secondary TE material, the total Seebeck coefficient of the stacked layer is generally represented by a parallel conductor model.
Won‐Yong Lee   +9 more
doaj   +1 more source

Alternatingly Stacked Low‐ and High‐Resistance PtSe2/PtSe2 Homostructures Boost Thermoelectric Power Factors

open access: yesAdvanced Electronic Materials, 2023
2D transition‐metal dichalcogenide (TMDC) materials are promising candidates with excellent thermoelectric (TE) properties owing to their low dimensionality in electronic and phonon transport. However, the considerable coupling of the Seebeck coefficient
Won‐Yong Lee   +7 more
doaj   +1 more source

Quantitative Analysis of Seed Surface Tubercles in Silene Species

open access: yesPlants, 2023
In the Caryophyllaceae, seed surfaces contain cell protrusions, of varying sizes and shapes, called tubercles. Tubercles have long been described in many species, but quantitative analyses with measurements of size and shape are lacking in the literature.
José Luis Rodríguez-Lorenzo   +4 more
doaj   +1 more source

Lane Detection Algorithm Using LRF for Autonomous Navigation of Mobile Robot

open access: yesApplied Sciences, 2021
This paper proposes a lane detection algorithm using a laser range finder (LRF) for the autonomous navigation of a mobile robot. There are many technologies for ensuring the safety of vehicles, such as airbags, ABS, and EPS.
Jong-Ho Han, Hyun-Woo Kim
doaj   +1 more source

A Short Review on the Finite Element Method for Asymmetric Rolling Processes

open access: yesMetals, 2021
Several studies on asymmetric rolling processes use the Finite Element Method (FEM) to predict material deformation and optimize process parameters, such as rolls’ forces and torques.
Ana Graça, Gabriela Vincze
doaj   +1 more source

Differential Geometry of the Family of Helical Hypersurfaces with a Light-like Axis in Minkowski Spacetime L4

open access: yesUniverse, 2023
We investigate the class of helical hypersurfaces parametrized by x=x(u,v,w), characterized by a light-like axis in Minkowski spacetime L4. We determine the matrices that represent the fundamental forms, Gauss map, and shape operator of x.
Erhan Güler
doaj   +1 more source

Measurement and Analysis of High Frequency Assert Volatility Based on Functional Data Analysis

open access: yesMathematics, 2022
Information and communication technology have enabled the collection of high-frequency financial asset time series data. However, the high spatial and temporal resolution nature of these data makes it challenging to compare financial asset ...
Zhenjie Liang   +5 more
doaj   +1 more source

The Bourguignon Laplacian and Harmonic Symmetric Bilinear Forms

open access: yesMathematics, 2020
In this paper, we study the kernel and spectral properties of the Bourguignon Laplacian on a closed Riemannian manifold, which acts on the space of symmetric bilinear forms (considered as one-forms with values in the cotangent bundle of this manifold ...
Vladimir Rovenski   +2 more
doaj   +1 more source

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