Measurements of Hα, HI, and CO distributions in 61 normal spiral galaxies are combined with published far-infrared and CO observations of 36 infrared-selected starburst galaxies, in order to study the form of the global star formation law, over the full range of gas densities and star formation rates (SFRs) observed in galaxies. The disk-averaged SFRs and gas densities for the combined sample a...

then, under mild restrictions on Q, thc resulting feedback system is a "good" system by most classical criteria. An equally significant result is as follows [2 I. Given a feedback control law u = -k'x for the system (I), which is known to yield an asymptotically stable closed-loop system, then a ncccssary and sufficient condition for this control law to bc optimal with respcct to a performance ...

In our companion paper [1], an information identity decomposition has been derived, which can be interpreted as a law of conservation of information flows in feedback systems. In this paper, we further investigate this decomposition result when specified to linear time-invariant(LTI) systems connected with additive white Gaussian noise(AWGN) channels. It is shown that the quantities in the deco...

interest free banking law at 1363 was implemented in the banking system in iran. one of the main goals of this law was eliminating usury from monetary system, and utilization from non-usury credit impact on economic growth through preferring money contribution in the capital. this paper uses data from years 1363 to 1386 and implementing herfindahl-hirschman index, evaluated and ranked concentra...

AMS 1991 subject classifications: primary 62G07 secondary 62M10 Keywords: Spatial long memory Local Whittle method a b s t r a c t A local Whittle estimator is developed to simultaneously estimate the long memory parameters for stationary anisotropic scalar random fields. It is shown that these estimators are consistent and asymptotically normal, under some weak technical conditions. A brief si...

The second law of thermodynamics in nonextensive statistical mechanics is discussed in the quantum regime. Making use of the convexity property of the generalized relative entropy associated with the Tsallis entropy indexed by q, Clausius' inequality is shown to hold in the range q in (0, 2]. This restriction on the range of the entropic index, q, is purely quantum mechanical and there exists n...

I. Kontoyiannis Appeared in IEEE Trans. Inform. Theory, 43, pp. 1339 1341, July 1997. Abstract { Shannon's celebrated source coding theorem can be viewed as a \one-sided law of large numbers." We formulate second-order noiseless source coding theorems for the deviation of the codeword lengths from the entropy. For a class of sources that includes Markov chains we prove a \one-sided central limi...

Background: The inverse relationship between movement speed and accuracy in goal-directed aiming is mostly investigated using the classic Fitts’ paradigm. According to Fitts’ law, movement time scales linearly with a single quantity, the index of difficulty (ID), which quantifies task difficulty through the quotient of target width and distance. Fitts’ law remains silent, however, on how ID aff...