In this paper, Ni/Al and La-Ni/Al catalysts were prepared with a co-impregnation method and employed in carbon dioxide methanation reaction. The catalytic results showed that the catalyst with (10wt.%) of lanthanum and (20wt.%) nickel had the highest activity at low temperatures in CO2 methanation and the La-Ni/Al catalysts changed the reaction path by lowering its activation energy and consequ...

Minimum sum-of-squares clustering (MSSC) consists in partitioning a given set of n entities into k clusters in order to minimize the sum of squared distances from the entities to the centroid of their cluster. Among many criteria used for cluster analysis, the minimum sum-of-squares is one of the most popular since it expresses both homogeneity and separation. A mathematical programming formula...

In this paper, we investigate the correlation and ergodic properties of the squared envelope of a class of autocorrelation-ergodic (AE) sum-of-cisoids (SOC) simulation models for mobile Rayleigh fading channels. Novel closed-form expressions are presented for both the ensemble and the time autocorrelation functions (ACFs) of the SOC simulation model’s squared envelope. These expressions have be...

First Order Locally Orderless Registration (FLOR) is a scale-space framework for image density estimation used defining similarity, mainly Image Registration. The was designed in principle to use zeroth-order information, providing estimates over three scales: scale, intensity and integration scale. We extend it take first-order information into account hint at higher-order information. show ho...