Results 1 to 10 of about 15,788 (150)

Expanding the PIV Spectral Range and the Turbulence Generated by Grid of Prismatic Circular Cylinders [PDF]

open access: yesMATEC Web of Conferences, 2022
The grid turbulence past a grid made of row of prismatic circular rods (rod diameter = 10 mm, rod spacing = 20 mm) perpendicular to the flow is observed by using a pair of PIV cameras.
Duda Daniel   +2 more
doaj   +1 more source

Flatness-Based Aggressive Formation Tracking Control of Quadrotors with Finite-Time Estimated Feedforwards

open access: yesApplied Sciences, 2021
In this paper we address a decentralized neighbor-based formation tracking control of multiple quadrotors with leader–follower structure. Different from most of the existing work, the formation tracking controller is given in one loop without ...
Zhicheng Hou   +4 more
doaj   +1 more source

Flat coordinates of flat Stäckel systems [PDF]

open access: yesApplied Mathematics and Computation, 2015
In this article we explicitely construct transformation bewteen separable and flat coordinates for flat Stäckel systems and exploit the structre of these systems in flat coordinates. In the elliptic case these coordinates become well known generalized elliptical coordinates of Jacobi.
Krzysztof Marciniak, Maciej Blaszak
openaire   +5 more sources

ON HOMOLOGICAL CLASSIFICATION OF MONOIDS BY CONDITION (PWPsc) OF RIGHT ACTS [PDF]

open access: yesJournal of Algebraic Systems, 2023
In this paper, we introduce Condition (PWPsc) as a generalization of Condition (PWP_E) of acts over monoids, and we observe that Condition (PWPsc) does not imply Condition (PWP_E).
Hossein Mohammadzadeh Saany, Leila Nouri
doaj   +1 more source

Flatness of the Meckel cave may cause primary trigeminal neuralgia: a radiomics-based study

open access: yesThe Journal of Headache and Pain, 2021
Background Neurovascular contact (NVC) is the main cause of primary trigeminal neuralgia (PTN); however, cases of PTN without NVC are still observed. In this study, the Meckel cave (MC) morphology in PTN were analyzed by radiomics and compared to healthy
Jinzhi Lin   +4 more
doaj   +1 more source

Flatness pattern recognition of ultra-wide tandem cold rolling mill

open access: yes工程科学学报, 2021
A cubic flatness pattern expressed by Legendre orthogonal polynomial was introduced to build a new flatness pattern recognition model,in which least squares regression was used.
BAO Ren-ren   +5 more
doaj   +1 more source

FPGA Design for On‐Board Measurement of Intermittency From In‐Situ Satellite Data

open access: yesEarth and Space Science, 2021
Intermittency is a fundamental property of space plasma dynamics, characterizing turbulent dynamical variables as well as passive scalars. Its qualitative and quantitative description from in‐situ data requires an accurate estimation of the probability ...
N. Deak   +4 more
doaj   +1 more source

An optimal energy management strategy for a photovoltaic/li-ion battery power system for DC microgrid application

open access: yesFrontiers in Energy Research, 2023
The purpose of this paper is to propose an energy management strategy (EMS) based on flatness control method for a standalone hybrid photovoltaic-battery system. The goal of the proposed method is to use non-linear flatness theory to develop an efficient
Salam J. Yaqoob   +7 more
doaj   +1 more source

Heredity and evolution laws of flatness defects in steel strip temper rolling processes

open access: yes工程科学学报, 2015
Three-dimensional temper rolling processes are simulated by nonlinear elastoplastic finite element software called ABAQUS. In this simulation, the initial flatness defects of steel strips are modeled by the temperature field, and the adjustment effect of
LI Bo, ZHANG Qing-dong, ZHANG Xiao-feng
doaj   +1 more source

Improving Etched Flatness by Micro Airflow Array Pressurization in ITO Glass Laser Machining

open access: yesMicromachines, 2023
In laser etching of ITO glass, the warpage due to workpiece positioning causes breakpoint or deformation of micron-scale etching circuits. Based on traditional laser etching, a micro-airflow array pressurization is proposed by using a micro-flow air ...
Rong Chen, Zhaojie Chen, Jin Xie
doaj   +1 more source

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