Results 1 to 10 of about 19,604,431 (252)

Two-parametric motions in $E_3$ [PDF]

open access: yesApplications of Mathematics, 1987
Gestützt auf die Theorie der Lie'schen Gruppen und der zugehörigen Lie'schen Algebren werden als Einführung lokale und globale Eigenschaften mehrdimensionaler Bewegungen in Vektorräumen und p- parametrige Bewegungen im n-dimensionalen euklidischen Raum \(E_ n\) betrachtet.
Karger, Adolf
openaire   +3 more sources

Multiple-task motion planning of non-holonomic systems with dynamics [PDF]

open access: yesMechanical Sciences, 2013
This paper addresses the motion planning problem in non-holonomic robotic systems. The system's kinematics and dynamics are represented as a control affine system with outputs.
A. Ratajczak, K. Tchoń
doaj   +1 more source

Generalized Schwarzian mechanics

open access: yesNuclear Physics B, 2021
A coordinate transformation is proposed which allows one to construct new variants of Schwarzian mechanics from the SL(2,R)-invariant models in the work by Baranovsky (2017) [10].
Sergei Filyukov, Ivan Masterov
doaj   +1 more source

Method of parametric analysis of reciprocating electric generators with permanent magnets

open access: yesВесці Нацыянальнай акадэміі навук Беларусі: Серыя фізіка-тэхнічных навук, 2021
A method for the parametric analysis of electric generators of reciprocating motion with permanent magnets has been developed, which allows revealing the values of the parameters of the magnetic circuit (cross-sectional area) and the working winding ...
A. B. Menzhinski   +2 more
doaj   +1 more source

Comparison of range of motion of lower limb joints in individuals with and without overweight [PDF]

open access: yesBiyumikānīk-i varzishī, 2022
Objective: The aim of this study was to compare the range of motion of lower limb joints in overweight and obese individuals. Methods: The statistical population of the present study consisted of 25 to 45 years old working and available women in Zanjan ...
Fatemeh Rezaei Tabar   +1 more
doaj  

The Darboux theorem on plane trajectories of two-parametric space motions [PDF]

open access: yesApplications of Mathematics, 1988
In dieser Arbeit wird eine vollständige Klassifikation der zweiparametrigen Bewegungen, bei denen mindestens fünf Punkte in Bahnebenen laufen, gegeben. Sie baut dabei wesentlich auf einer Arbeit von G. Darboux auf, in der neben einem expliziten Beispiel für eine solche Bewegung vor allem der Beweis dafür gegeben wird, daß bei einer derartigen Bewegung ...
openaire   +2 more sources

A Contribution to Avalanche Dynamics: A Formal and an Exact Solution of the Voellmy/Perla Two-Parametric Equation of Motion (Abstract only) [PDF]

open access: yesAnnals of Glaciology, 1983
The two-parameter equation of motion for snow avalanches proposed by Voellmy in 1955 was later formally derived by Perla in 1979. It has been the object of numerous investigations, mainly to its applications. It has been solved for tracks approximated by straight lines, and this solution has, in some countries, been used extensively with a two-segment ...
openaire   +1 more source

THE LOGARITHMIC SPIRAL AND ITS SPHERICAL COUNTERPART

open access: yesJournal of Industrial Design and Engineering Graphics, 2020
Logarithmic spirals are isogonal trajectories of pencils of lines. From a series of geometric consequences, we pick out a few which are relevant for kinematics: When a logarithmic spiral rolls on a line, its asymptotic point traces a straight line. Hence,
Hellmuth Stachel   +2 more
doaj   +2 more sources

Parametric Design of a Finger Rehabilitation Mechanism with Double Action and Two Degrees of Freedom

open access: yesApplied Sciences, 2022
The objective of this work is to design a rehabilitation mechanism for the index finger that can replicate the finger’s natural movements in the sagittal plane; this mechanism must also be able to adapt to an individual’s anthropometric dimensions.
Iyari Alejandro Nava-Téllez   +3 more
doaj   +1 more source

MR-based motion correction for cardiac PET parametric imaging: a simulation study

open access: yesEJNMMI Physics, 2018
Background Both cardiac and respiratory motions bias the kinetic parameters measured by dynamic PET. The aim of this study was to perform a realistic positron emission tomography-magnetic resonance (PET-MR) simulation study using 4D XCAT to evaluate the ...
Rong Guo   +5 more
doaj   +1 more source

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