Zero Point Motion
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. Tunneling and the Vacuum Zero-Point Radiation
We make a brief review of the Kramers escape rate theory for the probabilistic motion of a particle in a potential well U(x), and under the influence of classical fluctuation forces. The Kramers theory is extended in order to take into account the action of the thermal and zero-point random electromagnetic fields on a charged particle. The result is physical
Brazilian Journal of Physics. Publicado em: 2007-03
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2. Coulomb and nuclear potentials between deformed nuclei applied to the fusion process
We obtained theoretical fusion cross sections based on a new and accurate procedure to calculate the Coulomb and nuclear interactions between deformed nuclei. The calculations were performed within the context of the barrier penetration model with zero point motion for the 64Ni + 64Ni system.
Brazilian Journal of Physics. Publicado em: 2005-09
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3. Recurrent neural network approaches for biped walking robot based on zero-moment point criterion
The main objective of this paper is to use a recurrent neural network (RNN) to determine the trunk motion for a biped-walking machine, based on the zero-moment point (ZMP) criterion. ZMP criterion can be used to plan a stable gait for a biped-walking machine that has a trunk (inverted pendulum). So, a RNN is trained to determine a compensative trunk motion t
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2003-03
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4. Medidas de secções de choque de fusão dos sistemas 16o + 46,50ti / Measures sections of shock melting systems 16th ti + 46.50
Foram medidas funções de excitação para a fusão completa dos sistemas 16O+46,50Ti em energias abaixo e em torno da barreira Coulombiana. A seção de choque de fusão foi obtida utilizando-se os métodos da espectroscopia em linha e fora da linha através da soma das seções de choque dos canais de decaimento do núcleo composto formado, observados exp
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/09/1986
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5. Temperature and pressure dependence of viscosity of quantum liquid 4He according to significant structure theory
Both solid-like and gas-like flow structures are considered in the calculation of viscosity of liquid 4He using the significant structure theory of liquids. The predominance of quantum mechanical zero-point motion over that arising from thermal excitation is taken into account for the solid-like motion of molecules. The viscosity of liquid 4He under its own
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6. Significant structure theory applied to liquid 4He
The large kinetic zero-point motion of 4He molecules has been properly taken into account in the significant structure theory of liquids in order to describe the liquidity of liquid 4He. The Debye and the Bose-Einstein partition functions are used for the solid-like molecules of the normal fluid component and for the whole gas-like molecules, respectively. T
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7. Clinical evaluation of Dinamap 845 automated blood pressure recorder.
The Dinamap 845 blood pressure recorder has been evaluated over a wide range of blood pressure by comparison with the Hawksley random zero sphygmomanometer in 32 subjects, six of whom had a cardiac arrhythmia. Group mean radings for systolic and phase 5 diastolic pressure were almost identical but Dinamap diastolic values were on average significantly lower
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8. Zero-shift tuning in geonium by variation of trapped charge.
Measuring the g factor, or gyromagnetic ratio of an individual electron or positron permanently confined in ultrahigh vacuum at liquid helium temperature, provides one of the few avenues for testing the currently accepted standard model that views these elementary particles, on the same level as the quarks, as point-like objects without internal structure. O
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9. The neck region of the myosin motor domain acts as a lever arm to generate movement.
The myosin head consists of a globular catalytic domain that binds actin and hydrolyzes ATP and a neck domain that consists of essential and regulatory light chains bound to a long alpha-helical portion of the heavy chain. The swinging neck-level model assumes that a swinging motion of the neck relative to the catalytic domain is the origin of movement. This
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10. Practical zero-shift tuning in geonium.
Compositeness of the electron may show up in a very small deviation of the measured electron g factor from one calculated for a point electron by quantum electrodynamics. The precision of our g measurements is currently limited by an interaction of the cyclotron motion with standing waves in the trap cavity containing the electron. The important element intr