Purpose – Improving energy efficiency is considered one of the most desirable and effective short‐term measures to address the issue of energy security, and also reduce the emission of greenhouse gases. However, lack of access to domestic finance is the major hindrance in achieving the...

Purpose – Coal, a fuel that once dominated the global energy scene, is staging a come‐back despite being environmentally dirty. The purpose of the paper is to analyse the return of King Coal to find out whether it is likely to be regain its dominance in the global energy in the future....

This paper describes a new approach to find the shape of a piece of bent fabric. A general form for the potential and bending energy stored in a fabric is stated, based on the frictional couple theory. With the help of the calculus of variations the differential equation for the bent shape is...