It is known that the topological entropy for the geodesic flow on a Riemannian manifoldM is bounded if the absolute value of sectional curvature |KM | is bounded. We replace this condition by the condition of Ricci curvature and injectivity radius.

CHAPMAN, A. R., P. W. HODGES, A. M. BRIGGS, P. J. STAPLEY, and B. VICENZINO. Neuromuscular Control and ExerciseRelated Leg Pain in Triathletes. Med. Sci. Sports Exerc., Vol. 42, No. 2, pp. 233–243, 2010. Previous studies have shown that cycling can directly influence neuromuscular control during subsequent running in some highly trained triathletes. A relationship between this altered neuromusc...

DSMC simulation of re-entry of an object with shape and size close to that of ISRO’s Space Recovery Experiment (SRE) capsule has been analysed using the open-source tool dsmcFoam for three altitude conditions, viz. 85 km, 100 km and 115 km, and for three angles of attack, viz. 0, 20&40. The hypersonic free stream velocity of 8000 m/s and boundary surface temperature of 300 K have been used for ...

A comprehensive investigation of all available radio and stellar occultation data for the outer edge of Saturn’s B ring, spanning the period 1980–2010, confirms that the m = 2 distortion due to the strong Mimas 2:1 inner Lindblad resonance circulates slowly relative to Mimas in a prograde direction, with a frequency XL = 0.1819 d . Our best-fitting model implies that the radial amplitude of thi...

The distance to the relativistic jet source SS 433 and the related supernova remnant W50 is re-examined using new observations of H I in absorption from the VLA, H I in emission from the GBT, and CO emission from the FCRAO. The new measurements show H I in absorption against SS 433 to a velocity of 75 km s but not to the velocity of the tangent point, which bounds the kinematic distance at 5.5 ...

Movements of two female one-humped camels in central Australia were tracked using satellite telemetry between March 1986 and July 1987. During that time both animals travelled a minimum distance of over 1000 km within a radius of 125 km for one animal, and 200 km for the other. However, their movements were quite punctuated and both animals spent periods of up to several months in relatively sm...

ai = normalized radius of body’s circularized orbit for i M;S, where M moon and S sun C = cost function Cd = discrete cost function D1 D2 = operator that denotes the derivative with respect to the first (second) argument dEO = distance of spacecraft from Earth, km dMO = distance of spacecraft from moon, km dp = altitude of elliptical orbit at perigee, km E = energy integral Ei = critical energy...

The depths and source mechanisms of nine large shallow earthquakes were determined from long-period (150 to 300 s) Rayleigh waves recorded by the Global Digital Seismograph Network (GDSN) and International Deployment of Accelerometers (IDA) networks. We inverted the data set of complex source spectra for a moment tensor (linear) or a double couple (nonlinear). By solving a least squares problem...

A small group of X-ray binaries currently provides the best evidence for the existence of stellar-mass black holes. These objects are interacting binary systems where the X-rays arise from accretion of material onto a compact object (i.e. an object with a radius of less than a few hundred km). In some favourable cases, optical studies of the companion star lead to dynamical mass estimates for b...