Negative emissions at negative cost-an opportunity for a scalable niche

Cooperative vehicle routing problem: an opportunity for cost saving

In this paper, a novel methodology is proposed to solve a cooperative multi-depot vehicle routing problem. We establish a mathematical model for multi-owner VRP in which each owner (i.e. player) manages single or multiple depots. The basic idea consists of offering an option that owners cooperatively manage the VRP to save their costs. We present cooperative game theory techniques for cost savi...

Technical Note: An opportunity cost maintenance scheduling framework for a fleet of ships: A case study

The conventional method towards deriving schedule for a fleet of ships to minimize cost alone has the short-coming of not addressing the problem of operation revenue losses associated with delays during maintenance at ships dockyards. In this paper, a preventive maintenance schedule for a fleet of ships that incorporates op-portunity cost is presented. The idea is to assign a penalty cost to al...

Focus on negative emissions

The promise of negative emissions.

IN THEIR PERSPECTIVE “The trouble with negative emissions” (14 October, p. 182), K. Anderson and G. Peters assert that negative-emissions technologies are an “unjust and high-stakes gamble.” This characterization would sideline negativeemissions technologies and remove potentially important options from the portfolio for mitigating and ameliorating climate change. As Anderson and Peters acknowl...

A Numerical Investigation of the Potential for Negative Emissions Leakage

Leakage of greenhouse gas emissions— increased emissions in unconstrained regions due to regulations in other regions— undermines the effectiveness of sub-global climate regulations, reduces incentives for unilateral climate initiatives, and can result in distortionary trade measures (Winchester, 2012). These concerns are expressed in measures to reduce leakage included in the EU Emissions Trad...