Results 31 to 40 of about 17,592,565 (303)
Nonlinear Spectral Synthesis of Soliton Gas in Deep-Water Surface Gravity Waves. [PDF]
Physical Review Letters, 2020 Soliton gases represent large random soliton ensembles in physical systems that exhibit integrable dynamics at the leading order. Despite significant theoretical developments and observational evidence of ubiquity of soliton gases in fluids and optical ...
P. Suret +11 more
semanticscholar +1 more source
Journal of Aerospace Technology and Management, 2023 Aimed at the deficiency of existing PID controller for quad rotor UAV, a single neuron PID controller with gravity compensation is presented. After using feed forward control to compensate gravity, the position loop adopts PID control to ensure control ...
Haitao Zhang, Lulu Yang
doaj
Postural adaptation to microgravity underlies fine motor impairment in astronauts’ speech
Scientific Reports, 2023 Understanding the role of anti-gravity behaviour in fine motor control is crucial to achieving a unified theory of motor control. We compare speech from astronauts before and immediately after microgravity exposure to evaluate the role of anti-gravity ...
Arian Shamei +3 more
doaj +1 more source
Gravity field modelling and gravimetry
Geodesy and Cartography, 2015 The summary of research activities concerning gravity field modelling and gravimetric works performed in Poland in the period of 2011-2014 is presented.
Krynski Jan
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Control Strategies of Gecko’s Toe in Response to Reduced Gravity
Applied Sciences, 2020 Shear-induced adhesion is one of the key properties for the gecko moving safely and quickly in a three-dimensional environment. The control strategies of such locomotion strongly relying on adhesion are still not well understood.
Zhongyuan Wang +2 more
doaj +1 more source
Multi-mode Control Method of Gravity Energy Storage DC Link Battery
Zhongguo dianliGravity energy storage is one of the important energy storage modes. However, due to its unique transient dynamic characteristics, it is necessary to construct a reasonable system topology and control method.
Jiayan HAN, Yanling LÜ, Chong ZHOU
doaj +1 more source
Feasible Positions of Towing Point and Center of Gravity for Towfish Attitude Control
한국해양공학회지, 2020 Most towfish systems do not have propulsive devices and cannot compensate for perturbation motion, which can affect the observation data. This paper discusses attitude control of a towfish with elevators on the left and right tail wings to improve the ...
Min-Kyu Kim +3 more
doaj +1 more source
‘DUAL’ GRAVITY: USING SPATIAL ECONOMETRICS TO CONTROL FOR MULTILATERAL RESISTANCE [PDF]
Journal of Applied Econometrics, 2007 SUMMARYWe derive a quantity‐based structural gravity equation system in which both trade flows and error terms are cross‐sectionally correlated. This system can be estimated using techniques borrowed from the spatial econometrics literature. To illustrate our methodology, we apply it to a well‐known Canada–US trade dataset.
Kristian Behrens +2 more
openaire +4 more sources
Quantum superposition of massive objects and the quantization of gravity [PDF]
Physical Review D, 2018 We analyze a Gedankenexperiment previously considered by Mari et al. [Sci. Rep. 6, 22777 (2016).] that involves quantum superpositions of charged and/or massive bodies (``particles'') under the control of the observers, Alice and Bob.
A. Belenchia +5 more
semanticscholar +1 more source
Molecular Oncology, EarlyView.Single circulating tumor cells (sCTCs) from high‐grade serous ovarian cancer patients were enriched, imaged, and genomically profiled using WGA and NGS at different time points during treatment. sCTCs revealed enrichment of alterations in Chromosomes 2, 7, and 12 as well as persistent or emerging oncogenic CNAs, supporting sCTC identity.
Carolin Salmon +9 more
wiley +1 more source