Proton exchange membrane fuel cells (PEMFCs) durability has been severely hindered by poor stability of carbon support in the cathodic Pt-based catalyst. Herein, a high-surface-area nitrogen doped graphitic nanocarbon (N-G-CA) with mesopores is developed as Pt support to address PEMFCs...

One scheme for universal quantum multiple tele-flipping and tele-cloning of an arbitrary qubit is proposed. Our scheme combines three processes of quantum teleportation, optimal universal quantum flipping and optimal universal quantum cloning, and implements the task by consuming reduced...

The emergence of the sharing economy has affected consumers and traditional manufacturers. We focus on product sharing and analyze its impacts on the manufacturer that offers sequential innovation products. We develop a two-period model in which a monopoly manufacturer sells an old product and...

Identifying firms linked economically through the comovement of the credit rating of their corporate bonds, we find that a long-short strategy for stocks based on the link generates a risk-adjusted alpha of 0.62 percent per month, which cannot be explained by industry, customer-supplier, single-...