We assessed the impact on the world forest sector of a progressive elimination of illegal logging. The analysis compared predictions from 2007 to 2020, with and without a gradual reduction of illegally logged industrial roundwood from 2007 to 2011. A large part of the curtailment of timber...

In this paper, we propose the concept of a second-order composed contingent derivative for set-valued maps, discuss its relationship to the second-order contingent derivative and investigate some of its special properties. By virtue of the second-order composed contingent derivative, we extend...

In this paper we investigate a class of cardinality-constrained portfolio selection problems. We construct convex relaxations for this class of optimization problems via a new Lagrangian decomposition scheme. We show that the dual problem can be reduced to a second-order cone program problem...

A carbon nanotube based gas diffusion layer (CNT-GDL) for direct methanol fuel cells (DMFCs) was prepared by sintering the wet carbon paper made of CNT, polyacrylonitrile-based carbon fibre (PCF) and PTFE, completely replacing the commercial carbon paper based GDL (Toray-GDL). The results of...

Ba0.6Sr0.4TiO3 (BST) and Ba0.6Sr0.4TiO3/Ba(Zr0.2Ti0.8)O3/Ba0.6Sr0.4TiO3 (BST/BZT/BST) multilayer (ML) films were prepared by pulsed laser deposition on the LaNiO3-coated LaAlO3 substrate. X-ray diffraction analysis revealed that the two kinds of films could be epitaxially grown in pure...

Vertical integration in forest industry refers to firms that provide large portion of wood from their own or controlled forests. Access to resources and competition for cost effective acquisition of industrial raw material are some of the main concerns and advantages for globalized forestry...

The rapid growth in coal and oil consumption has led to increasing emissions of greenhouse gases as well as air pollutants in China. In response to this, the Chinese government has begun to formulate policies to retard the increasing use of energy consumption and to improve air quality. This...

The present work reports studies on the mixing and combustion characteristics of cotton stalk (CS) with 10–100mm in length in a fluidized bed. Effects of length and initial weight percentage of CS, diameter of alumina bed material as well as gas velocity on the mixing characteristics of CS...