Results 31 to 40 of about 654,936 (181)
Changing the load of a arrow crane while carrying out loading and unloading works [PDF]
Научно-технический вестник Брянского государственного университета, 2020 The stability of self-propelled jib cranes is a key task in the process of their operation. The developed calculation scheme of the arrow self-propelled crane and the restrictions imposed on its movement in time and space, allowed to obtain mathematical ...
Sladkova L.A, Krylov V.V, Gorelova M.V.
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The Cosmological Arrow of Time and the Retarded Potentials
Universe, 2022 We demonstrate that the cosmological arrow of time is the cause for the arrow of time associated with the retarded radiation. This implies that the proposed mathematical model serves to confirm the hypothesis of Gold and Wheeler that the stars radiate ...
Alla A. Yurova +2 more
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Arrow of time across five centuries of classical music
Physical Review Research, 2020 The concept of time series irreversibility—the degree by which the statistics of signals are not invariant under time reversal—naturally appears in nonequilibrium physics in stationary systems which operate away from equilibrium and produce entropy. This
Alfredo González-Espinoza +2 more
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Journal of Modern Physics, 2014 The arrow of time is one of the most difficult questions in modern physics. In this paper, a damping vibration equation is discussed, which shows that this equation reflects the arrow of time. We have further discussed that the concept of “the arrow of time” in this equation is quite different from the thermodynamic arrow.
Peng Zhang, Tsao Chang, Kangjia Liao
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Life, 2021 An efficient and effective multiple headspace-solid phase microextraction-arrow-gas chromatography-mass spectrometry (MHS-SPME-arrow-GCMS) analytical protocol is established and used to quantify the flavor compounds in oils.
Ziyan Xu +5 more
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Time Asymmetric Quantum Mechanics
Symmetry, Integrability and Geometry: Methods and Applications, 2011 The meaning of time asymmetry in quantum physics is discussed. On the basis of a mathematical theorem, the Stone-von Neumann theorem, the solutions of the dynamical equations, the Schrödinger equation (1) for states or the Heisenberg equation (6a) for ...
Arno R. Bohm +2 more
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Dynamical and Probabilistic Approaches to Irreversibility
Dynamics, 2023 Boltzmann’s H-theorem is considered a great triumph of science. Though some modifications are necessary to adapt it to modern dynamical theories, it is well established that one of its main tenets remains widely accepted: the introduction of probability ...
Fernando C. Pérez-Cárdenas
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Physical Review Letters, 2008 An unresolved problem in physics is how the thermodynamic arrow of time arises from an underlying time reversible dynamics. We contribute to this issue by developing a measure of time-symmetry breaking, and by using the work fluctuation relations, we determine the time asymmetry of recent single molecule RNA unfolding experiments.
Gavin E. Crooks, Edward H. Feng
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International Journal of Food Properties, 2019 The ability to readily determine the composition of brown rice vinegar is important for quality assurance purposes. To that end, solid–phase microextraction (SPME)–Arrow method was optimized for the determination of volatile organic compounds (VOCs) from
Tae Gyu Nam +4 more
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Entropy, 2021 Causality follows the thermodynamic arrow of time, where the latter is defined by the direction of entropy increase. After a brief review of an earlier version of this article, rooted in classical mechanics, we give a quantum generalization of the ...
Lawrence S. Schulman
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