Efficiency versus effort: A better way to compare best photovoltaic research cell efficiencies?

Best-Effort Versus Reservations Revisited

In this paper, we walk in the footsteps of the stimulating paper by Lee Breslau and Scott Shenker entitled “Best-effort vs. Reservations: A Simple Comparative Analysis”[1]. In fact, we finally follow their invitation to use their models as a starting point and extend them to reason about the very basic but still very much debated architectural issue whether quality of service (QoS) mechanisms l...

Membrane reactors: A way to increase efficiency

Solar Thermophotovoltaic Efficiency Potentials: Surpassing Photovoltaic Device Efficiencies

Solar energy has gained more attention in recent years due to increased concerns about the continued use of fossil fuels. Solar energy is a form of renewable energy, and solar energy technology does not release greenhouse gases responsible for climate change. While photovoltaic (PV) cells, which convert sunlight into electrical energy, are becoming more widely used, they are limited in their ab...

Flow Control for Best-Effort Networks: Fairness and Efficiency

The Internet is established on the best-effort service model. The Transmission Control Protocol employed in the current Internet has both fairness and efficiency issues. Pricing scheme has been proposed to address the fairness issue and prevent aggressive users occupying excessive network resource. Random early detection (RED) for the incipient congestion in routers, together with explicit cong...

Priority setting in practice: what is the best way to compare costs and benefits?

Prioritizing candidates for health-care expenditure using cost per Quality-Adjusted Life Year (QALY) is a helpful but insufficient means of ranking alternative uses for scarce health-care funds at the local level. This is because QALYs do not by themselves capture all criteria decision makers need to take into account. Other criteria such as reducing inequalities, meeting national and local pri...