Results 51 to 60 of about 880,319 (258)

The SAS-D nutation control system [PDF]

, 1972
A control law is developed for the SAS-D nutation control system. Nutation is removed in a sub-optimal manner with respect to fuel consumed, but attitude errors are minimized.
Taylor, J. M.
core  

Interbody Wire for Reconfigurable Robots: Bridging Integrated Morphological Reconfiguration and Distributed Wire‐Mediated Cooperation

Advanced Intelligent Systems, EarlyView.
TwinX shows how a single interbody wire connecting two robots can support both integrated morphological reconfiguration and distributed wire‐mediated cooperation. When the robots dock, they reconfigure into different forms for locomotion and manipulation.
Shintaro Inoue, Kento Kawaharazuka, Keita Yoneda, Sota Yuzaki, Temma Suzuki, Kei Okada   +5 more
wiley   +1 more source

Perturbed Motions of a Rigid Body Similar to Pseudoregular Precession in the Lagrange Case [PDF]

Journal of Applied and Computational Mechanics
The paper investigated the perturbed rotational motions of a rigid body, close to pseudoregular precession in the Lagrange case. It is assumed that the direction of the rigid body angular velocity is close to the axis of dynamic symmetry of the body; the
Dmytro Leshchenko, Tetiana Kozachenko
doaj   +1 more source

An a priori model for the reduction of nutation observations: KSV(1994.3) nutation series [PDF]

, 1995
We discuss the formulation of a new nutation series to be used in the reduction of modern space geodetic data. The motivation for developing such a series is to develop a nutation series that has smaller short period errors than the IAU 1980 nutation ...
Herring, T. A.
core  

Integrating machine learning, deep learning, and image analysis for seed species classification

Applications in Plant Sciences, EarlyView.
Abstract Premise The growing demand for wildflower seeds in ecological restoration requires reliable species identification, yet current market products often contain heterogeneous species. As seed identification is labor‐intensive and requires advanced botanical knowledge, we evaluated multiple segmentation and classification approaches to determine ...
Jonathan Ashworth, Eloise Barrett, Rebonto Haque, Ben Wildey, Anthony Hall, Felix Shaw, Jose J. De Vega   +6 more
wiley   +1 more source

Сalculation and analysis of characteristic point trajectories for planetary bevel gears with precessing satellites [PDF]

Научно-технический вестник Брянского государственного университета
The article talks about research on the kinematics of precessing gears. The possible ways of precession generation based on the patent database are listed. A range of gearboxes with single-stage gears has been defined.
Vinnik P.M., Kudryavtsev A.V., Petukhov-Pokrovsky R.A.   +2 more
doaj   +1 more source

The use of passive autobalancers as of dampers nutation angle of rapidly rotating satellites [PDF]

, 2008
Рассмотрены особенности использования пассивных автобалансиров как демпферов угла нутации быстровращающихся спутников. Составлен обзор спутников, для которых применим разработанный способ демпфирования.
Філімоніхін, Г. Б., Філімоніхіна, І. І., Пірогов, В. В., Pirogov, V., Филимонихин, Г. Б., Пирогов, В. В., Филимонихина, И. И., Filimonikhin, H., Filimonikhina, I.   +8 more
core  

Quantification of corrections for the main lunisolar nutation components and analysis of the free core nutation from VLBI-observed nutation residuals

, 2021
The attempt to quantify the corrections of lunisolar nutation components was made after analysis of six sets of Earth’s orientation parameters (EOP). The deviations of the long-term nutation components about IAU2006/IAU2000A precession–nutation model are
Trinh, Antony, Rekier, Jerémy, Triana, Santiago Andrés, Zhu, Ping, Dehant, Véronique   +4 more
core   +1 more source

Pelvic morphology and body size in relation to the preauricular sulcus: Evidence from medieval to modern Iberia

The Anatomical Record, EarlyView.
Abstract The preauricular sulcus has long been debated as a pelvic feature variably attributed to obstetric stress, ligamentous traction, and broader biomechanical processes. To clarify its determinants, we analyzed 409 adult individuals from three archeological and one early modern skeletal collection from the Iberian Peninsula, integrating graded ...
Rebeca García‐González, Julia Muñoz‐Guarinos, Nico Cirotto, Sonia Díaz‐Navarro, Laura Rodríguez, José Miguel Carretero   +5 more
wiley   +1 more source

Spin pumping at terahertz nutation resonances

, 2021
We investigate spin pumping current injected by the nutation resonances of a ferromagnet (FM) or an antiferromagnet (AFM) into an adjacent metal. Comparing the dc spin pumping current between the normal precession and the nutation resonances, we find ...
Mondal, Ritwik,, Mondal, Ritwik, Kamra, Akashdeep,, Kamra, Akashdeep   +3 more
core   +1 more source