Results 21 to 30 of about 385,583 (310)

Polypolar lemniscate coordinate system [PDF]

open access: yesКомпьютерные исследования и моделирование, 2009
The polypolar coordinate system, as well as classical polar, characterizes a point on a plane by polar radius and polar angle , but utilizes multiple poles instead of one pole. Such referencing can be provided by a class of multifocal lemniscates.
Tatyana Anatol'evna Rakcheeva
doaj   +1 more source

Definition of a Global Coordinate System in the Foot for the Surgical Planning of Forefoot Corrections

open access: yesBiomechanics, 2023
Forefoot osteotomies to improve the alignment are difficult procedures and can lead to a variety of complications. Preoperative planning in three dimensions might assist in the successful management of forefoot deformities.
Sanne Krakers   +4 more
doaj   +1 more source

Constructions of squaring the circle, doubling the cube and angle trisection / Koнструкции квадратура круга, удвоение куба и трисекция угла / Konstrukcije kvadrature kruga, udvajanja kocke i trisekcije ugla

open access: yesVojnotehnički Glasnik, 2017
The constructions of three classical Greek problems (squaring the circle, doubling the cube and angle trisection) using only a ruler and a compass are considered unsolvable. The aim of this article is to explain the original methods of construction of
Veselin M. Rmuš
doaj   +1 more source

A Coordinate System Choice when Information Signal Processing by Kalman Filter

open access: yesСовременные информационные технологии и IT-образование, 2021
The article describes information signal smoothing problems in the technical systems with movable platform. In such technical systems different coordinate system are used and there is a signal conditioning from one coordinate system into one another when
Valeriy Ponyatsky
doaj   +1 more source

Stewart platform pneumatic control system development and characteristic research

open access: yesВестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2016
The paper presents the results of improving the Stewart platform control system by applying the second-order regulation law to pneumatic drive controllers and transformation of the actuating signal for the functioning of valves in the linear region of ...
P. I. Greshnyakov
doaj   +1 more source

On a System of Coordinates [PDF]

open access: yesProceedings of the London Mathematical Society, 1880
n ...
openaire   +3 more sources

Coordinating action systems

open access: yesTheoretical Computer Science, 1997
AbstractWe develop an action systems-based approach that supports the separation of the design of the functional or computation aspects of a system under construction from the coordination and synchronization issues. The computation aspects are modeled as nondeterministic actions that work in parallel with the coordination actions, which impose some ...
Joost N. Kok, Eric J. Hedman, Kaisa Sere
openaire   +2 more sources

Automatic anatomical foot and ankle coordinate toolbox

open access: yesFrontiers in Bioengineering and Biotechnology, 2023
Accurate analysis of bone position and orientation in foot and ankle studies relies on anatomical coordinate systems (ACS). Reliable ACSs are necessary for many biomechanical and clinical studies, especially those including weightbearing computed ...
Andrew C. Peterson   +4 more
doaj   +1 more source

COORDINATE SYSTEMS AND TRANSFORMATIONS FOR AIR NAVIGATION TASKS

open access: yesНаучный вестник МГТУ ГА, 2017
The main types of coordinate systems, used for air navigation tasks solving that are connected with aeronautical flight control and landing provisioning are examined in the article.
O. N. Skrypnik
doaj   +1 more source

Synthesis of Control Algorithm for Position of Six–Axis Manipulator

open access: yesEnergy Engineering and Control Systems, 2022
The paper formulates the inverse kinematic problem for the robotic manipulator with six degrees of freedom. For the solution if this problem, the geometric method combined with the Denavit–Hartenberg transformation was applied.
Maxym Vihuro, Andriy Malyar
doaj   +1 more source

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