Results 1 to 10 of about 724,294 (169)

Capital Structure Theory: Past, Present, Future

open access: yesMathematics, 2023
The purpose of this review is to analyze all existing theories of the capital structure (with their advantages and disadvantages) in order to understand all aspects of the problem and make correct management decisions in practice. The role of the capital
Peter Brusov, Tatiana Filatova
doaj   +3 more sources

Type Synthesis of 5-DOF Hybrid (Parallel-Serial) Manipulators Designed from Open Kinematic Chains

open access: yesRobotics, 2023
The article proposes an approach for synthesizing hybrid (parallel-serial) manipulators with five degrees of freedom (5-DOF) using open kinematic chains.
Anton Antonov   +4 more
doaj   +1 more source

Inverse and Forward Kinematic Analysis of a 6-DOF Parallel Manipulator Utilizing a Circular Guide

open access: yesRobotics, 2021
The proposed study focuses on the inverse and forward kinematic analysis of a novel 6-DOF parallel manipulator with a circular guide. In comparison with the known schemes of such manipulators, the structure of the proposed one excludes the collision of ...
Alexey Fomin   +3 more
doaj   +1 more source

A Reconfiguration Algorithm for the Single-Driven Hexapod-Type Parallel Mechanism

open access: yesRobotics, 2022
This paper presents a hexapod-type reconfigurable parallel mechanism that operates from a single actuator. The mechanism design allows reproducing diverse output link trajectories without using additional actuators.
Alexey Fomin   +2 more
doaj   +1 more source

Virtual and Physical Prototyping of Reconfigurable Parallel Mechanisms with Single Actuation

open access: yesApplied Sciences, 2021
The paper presents novel models of reconfigurable parallel mechanisms (RPMs) with a single active degree-of-freedom (1-DOF). The mechanisms contain three to six identical kinematic chains, which provide three (for the tripod) to zero (for the hexapod ...
Alexey Fomin   +4 more
doaj   +1 more source

Structure of structure formation theories [PDF]

open access: yesPhysical Review D, 1999
We study the general structure of models for structure formation, with applications to the reverse engineering of the model from observations. Through a careful accounting of the degrees of freedom in covariant gravitational instability theory, we show that the evolution of structure is completely specified by the stress history of the dark sector. The
Hu, Wayne, Eisenstein, Daniel J.
openaire   +2 more sources

Inverse and forward kinematics and workspace analysis of a novel 5-DOF (3T2R) parallel–serial (hybrid) manipulator

open access: yesInternational Journal of Advanced Robotic Systems, 2021
The proposed study provides a solution of the inverse and forward kinematic problems and workspace analysis for a five-degree-of-freedom parallel–serial manipulator, in which the parallel kinematic chain is made in the form of a tripod and the serial ...
Anton Antonov   +4 more
doaj   +1 more source

Numerical modelling of concrete-filled steel tubular short columns under axial compression [PDF]

open access: yesGrađevinski Materijali i Konstrukcije, 2023
The paper presents three-dimensional numerical models of short concrete-filled steel tubular circular columns that can successfully describe the column behaviour under axial compression.
Nikolić Jelena   +2 more
doaj  

Control the structure to optimize the performance of sound absorption of acoustic metamaterial: A review

open access: yesAIP Advances, 2021
Acoustic metamaterials achieve the function of absorbing sound through equivalent negative parameters and bandgaps. Sound absorption is closely related to structural design.
Yan Du   +4 more
doaj   +1 more source

Novel Reconfigurable Spherical Parallel Mechanisms with a Circular Rail

open access: yesRobotics, 2022
The COVID-19 pandemic has placed unprecedented stress on the world healthcare system and demonstrated the need for modern automated robotic solutions for numerous medical applications.
Pavel Laryushkin   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy