Energy issues feature frequently in the economic and financial press. Specific examples of topical energy issues come from around the globe and often concern economics and finance. The importance of energy production, consumption and trade raises fundamental economic issues that impact the...

High-dimensional covariates often admit linear factor structure. To effectively screen correlated covariates in high-dimension, we propose a conditional variable screening test based on non-parametric regression using neural networks due to their representation power. We ask the question whether...

Den kleinen und mittelständischen Unternehmen kommt in der deutschen Wirtschaft eine herausragende Bedeutung zu. Sie machen 99,7 % aller deutschen Unternehmen aus und beschäftigen über 70 % aller Arbeitnehmer, tragen mit 46,7 % zur Bruttowertschöpfung aller Unternehmen bei, erwirtschaften...