Results 281 to 290 of about 2,335,638 (319)
Some of the next articles are maybe not open access.
Characteristics of Rock Motions During Earthquakes
Journal of the Soil Mechanics and Foundations Division, 1969Rock motions during earthquakes are characterized in terms of the maximum amplitude of accelerations, the predominant period of the motions, and the duration of the motions. It is shown that these characteristics depend mainly on the magnitude of the earthquake and distance of the site from the zone of energy release.
H. Bolton Seed +2 more
openaire +1 more source
Interstellar Motions: Minuet or Rock?
Publications of the Astronomical Society of the Pacific, 1972Our knowledge of interstellar space has been revolutionized by many recent observations. This article reviews some of the forces that we now believe control the motions of interstellar gas, and its variations in density and temperature. The observed degree of ionization has led to the cloud-intercloud model of interstellar gas. It also implies that the
openaire +1 more source
Influence of rocking motion on the mixing of powders
Powder Technology, 1989Abstract Mixing experiments with cohesionless and non-segregating powders have been carried out to evaluate the mixing performance of a rotary drum with simultaneous rocking motion. The temporal variation of the state of mixing was continuously measured by an optical method.
M. Alonso, M. Satoh, K. Miyanami
openaire +1 more source
Journal of the Power Division, 1973
A steady-state transfer function technique is used to obtain a record of hypothetical rock motion beneath soil deposits. This rock motion is designated as site consistent because it is compatible with the dynamic properties of the overlying soil deposits, and a measured or prescribed record of motion at the surface of the soil deposit. The soil deposit
openaire +1 more source
A steady-state transfer function technique is used to obtain a record of hypothetical rock motion beneath soil deposits. This rock motion is designated as site consistent because it is compatible with the dynamic properties of the overlying soil deposits, and a measured or prescribed record of motion at the surface of the soil deposit. The soil deposit
openaire +1 more source
A Scratch-Guide Model for the Motion of a Curling Rock
Tribology Letters, 2019A model based on a scratch-guide mechanism being responsible for the curl of a curling rock is presented. The model is based on the postulate that when the asperities around the rear of the running band of a curling rock cross the scratches produced by the front of the running band, at an angle due to the rotation of the curling rock, a sideways force ...
openaire +2 more sources
Acta Mechanica, 1999
The authors consider the ``contact-impact'' problem of a rigid block colliding with a frictional base, by means of a numerical simulation, and compare their numerical results with known analytical results.
ANDREAUS, Ugo, CASINI, Paolo
openaire +3 more sources
The authors consider the ``contact-impact'' problem of a rigid block colliding with a frictional base, by means of a numerical simulation, and compare their numerical results with known analytical results.
ANDREAUS, Ugo, CASINI, Paolo
openaire +3 more sources
A rocking motion sensor for the blind.
Biomedical sciences instrumentation, 1976Rocking motion is an unconscious and often unwanted phenomenon exhibited by the blind. It is usually manifested in oscillatory back and forth, side to side, or rotatory movements of the upper torso or head at about 1 Hz rate. Subjects desiring to function unobtrusively in the world of the sighted need to be alerted when rocking so they can control it ...
J T, Polhemus, J E, Morgan, A, Mandell
openaire +2 more sources
Adaptive fuzzy control of aircraft wing-rock motion
Applied Soft Computing, 2014In the paper, two adaptive fuzzy control schemes including indirect and direct frameworks are developed for suppressing the wing-rock motion that is a highly nonlinear aerodynamic phenomenon in which limit cycle roll oscillations are experienced by aircraft at high angles of attack.
Hai-Jun Rong, Sai Han, Guang-She Zhao
openaire +1 more source
The motion of a curling rock: Analytical approach
Canadian Journal of Physics, 2000A simplified version of a previously proposed model is presented and used to illustrate the salient features of the motion of a slowly rotating curling rock. A one-parameter model is presented. Analytical approximations for the chief aspects of the motion are derived.
openaire +1 more source
Maximizing the lateral motion of a curling rock
Canadian Journal of Physics, 2001A simplified version of a previously proposed model captures the salient features of the motion of a slowly rotating curling rock. The model is used to suggest how standard curling rocks may be modified to maximize the net lateral displacement of a slowly rotating curling rock. PACS No.: 46.00
openaire +1 more source