Recent X-ray variability studies on a large sample of Active Galactic Nuclei (AGN) have suggested that the fractional rms variability amplitude, σrms, seems to correlate with black hole mass, MBH. The fact that the rms amplitude can be easily obtained from the observed X-ray light curves has motivated the theoretical modeling of the σ rms-MBH relationship. A viable approach to addressing this p...

In the context of a recent description of Fermions as Kerr-Newman type black holes with Quantum Mechanical inputs, it is shown how the quark picture can be recovered. The advantage is that in the process we obtain a rationale for such features as the puzzling fractional charges of the quarks, their masses, confinement and handedness in a unified scheme. In a previous paper[1], it was suggested ...

Left ventricular hypertrophy is an independent predictor of cardiovascular morbidity and mortality. However, predictors of cardiac structure and function in youth are not completely understood. On 2 occasions (2.3 years apart), we examined 146 youth aged initially 10 to 19 years (mean age, 14.2+/-1.8 years). On the initial visit, hemodynamic function was assessed at rest, during laboratory stre...

In the finance market, Black–Scholes equation is used to model price change of underlying fractal transmission system. Moreover, fractional differential equations recently are accepted by researchers that a powerful tool in studying geometry and dynamics. Fractional modeling various important situations or phenomena real world such as fluid flow, acoustics, electromagnetic, electrochemistry mat...

In this paper, a high-order and fast numerical method is investigated for the time-fractional Black-Scholes equation. order to deal with typical weak initial singularity of solution, we construct finite difference scheme variable time steps, where fractional derivative approximated by nonuniform Alikhanov formula sum-of-exponentials (SOE) technique. spatial direction, an average approximation f...

black humor plays a crucial role in fulfilling langston hughes's anti-racist purposes as an integral notionin his poetry. accordingly, translation(s) of his poetry are to benefit from the same indexes onthe basis of equivalent effect principle. on this account, 33 black-humor-rich poems of hughes, translatedby ahmad shamloo, yaghma golruee and hassan fayyad, were selected to be analyzed co...

We show that collisions with stellar–mass black holes can partially explain the absence of bright giant stars in the Galactic Centre, first noted by Genzel et al. (1996). We show that the missing objects are low–mass giants and AGB stars in the range 1 − 3M⊙. Using detailed stellar evolution calculations, we find that to prevent these objects from evolving to become visible in the depleted K ba...