In this study, Entropy generation in MHD convective flow past a flat porous oscillating plate with suction or injection are presented for an unsteady, one-dimensional of viscous incompressible fluid. The importance is noticed industrial and scientific fields including heat transfer thermal systems which includes dissipation, chemical reaction, mass transfer, electrical conduction etc. role para...

Many efficient methods of generating “good” random numbers exist in the literature of mathematics and computer science. One particular method of generating usable randomness is with “extractors”: graphs which will transform “bad” randomness (i.e. a smaller ratio of entropy/data, or randomness distributed poorly) to “good” randomness (of a provable level of security) by an additional input of on...

Numerical investigation of the effects of magnetic field strength, thermal radiation, Joule heating, and viscous heating on a forced convective flow of a non-Newtonian, incompressible power law fluid in an axisymmetric stretching sheet with variable temperature wall is accomplished. The power law shear thinning viscosity-shear rate model for the anisotropic solutions and the Rosseland approxima...

It is shown that the amount of true randomness produced by the recently introduced Galois and Fibonacci ring oscillators can be evaluated experimentally by restarting the oscillators from the same initial conditions and by examining the time evolution of the standard deviation of the oscillating signals. The restart approach is also applied to classical ring oscillators and the results obtained...

Many applications rely on the security of their random number generator. It is therefore essential that such devices be extensively tested for malfunction. The purpose of a statistical test is to detect specific weaknesses in random sources. Maurer’s universal test is a very common randomness test, capable of detecting a wide range of statistical defects. The test is based on the computation of...

Intentional effects of human observation on the output of quantum-based random number generators (tRNG) have been studied for decades now. This research has been known as micro-psychokinesis (micro-PK) and many studies in the field reported evidence for mentally induced non-random deviations from chance. A most recent meta-analysis from Bösch et al. (2006) revealed a very small and heterogeneou...

We adopt L1 distance as Eve’s distinguishability in secret key generation from a common random number without communication. Under this secrecy criterion, using the Rényi entropy of order 1 + s for s ∈ [0, 1], we derive a new upper bound of Eve’s distinguishability under the application of the universal2 hash function. It is also shown that this bound gives the tight exponential decreasing rate...

We revisit the classical problem: given a memoryless source having a certain amount of Shannon Entropy, how many random bits can be extracted? This question appears in works studying random number generators built from physical entropy sources. Some authors use a heuristic estimate obtained from the Asymptotic Equipartition Property, which yields roughly n extractable bits, where n is the total...