Measuring the steepness of a dominance hierarchy is important for classifying social system in continuum between egalitarian and despotic. For this, often steepness-slope from de Vries et al. (Animal Behaviour, 2006, 71, 585–592) used. It compares cardinal ordinal rank each individual using slope linear regression. The disadvantage this measure that becomes lower higher proportion unknown relat...

Quantifying critical conditions of rill formation can be useful for a better understanding of soil erosion processes. Current studies lack a consensus and related rationale on how to describe these conditions. This study was based on the concepts that (1) the shear stress available for erosion at any given point is a function of the runoff rate, the slope steepness, and hydraulic characteristic...

We consider the at-the-money strike derivative of implied volatility as the maturity tends to zero. Our main results quantify the growth of the slope for infinite activity exponential Lévy models. As auxiliary results, we obtain the limiting values of short maturity digital call options, using Mellin transform asymptotics. Finally, we discuss when the at-the-money slope is consistent with the s...

We consider the at-the-money (ATM) strike derivative of implied volatility as the maturity tends to zero. Our main results quantify the behaviour of the slope for infinite activity exponential Lévy models including a Brownian component. As auxiliary results, we obtain asymptotic expansions of short maturity ATM digital call options, using Mellin transform asymptotics. Finally, we discuss when t...

Based on the application of Revised Universal Soil Loss Equation (RUSLE) and modern GIS technology (ArcGis 10.2.2.), article presents a method for calculating erosion potential relief (LS) Duruji river basin (north-eastern part Georgia). The most erosion-hazardous areas have been identified, which is approximately 75.1% total area ​​the basin. It has established that special attention should be...

BACKGROUND Enhanced sympathetic activity facilitates complex ventricular arrhythmias and fibrillation. The restitution properties of action potential duration (APD) are important determinants of electrical stability in the myocardium. Steepening of the slope of APD restitution has been shown to promote wave break and ventricular fibrillation. The effect of adrenergic stimulation on APD restitut...

Background. To reconcile "the obesity paradox," we tested if (1) the contribution of anthropometric measures to mortality was nonlinear and (2) the confounding of hip circumference contributed to the obesity paradox recently observed among diabetic patients. Methods. We analyzed data of diabetic patients attending a community-based prospective, "Tehran lipid and glucose study." In the mortality...