Integration of renewable generations with electrical power systems has gained considerable
attention in recent years due to environmental and economic benefits. However, this …

The official history of copulas begins in 1959 with Sklar [1959]; but, as is often the case in
Mathematics, for groundbreaking results there are forerunners and precedents. These latter …

We propose a new statistical instrument-free method to tackle the endogeneity problem. The
proposed method models the joint distribution of the endogenous regressor and the error …

Copulas are used to specify dependence between two or more random variables. The last
few years have seen a surge of developments of parametric models for copulas. Here, we …

The association between two variables is often of interest in data analysis and
methodological research. Pearson's, Spearman's and Kendall's correlation coefficients are …

The explosive increase of mobile data services and the use of smart phones require the fifth
generation (5G) network to support higher spectral efficiency, higher energy efficiency, and …

Abstract The Nash‐Sutcliffe efficiency (NSE) and the Kling‐Gupta efficiency (KGE) are now
the most widely used indices in hydrology for evaluation of the goodness of fit between …

By empowering customers to make fitting purchases, user reviews play an important role in
reducing inefficiencies in the provisioning of product information. Because of the abundance …

Movements in and out of poverty are of core interest to both policymakers and economists.
Yet the panel data needed to analyze such movements are rare. In this paper we build on …

After defining a new log-logistic model and studying its properties, some new bivariate type
versions using “Farlie-Gumbel-Morgenstern Copula”,“modified Farlie-Gumbel-Morgenstern …