This paper proposes a color picture encryption algorithm with pixel restructuring and quick diffusion to coexist the security and operational efficiency of the image encryption system. The algorithm employs a four-dimensional hyperchaotic system to decompose the pixels of a color image's three...

The recent Sino-U.S. trade conflict has made the impact of economic policy uncertainty (EPU) between China and the US on the global market gradually become a hot topic. This paper uses a spillover directional measure to investigate the cross-category spillovers among crude oil and gold markets...

Information and communication technologies (ICTs) are increasingly seen as integral to the development process. This paper reviews some of the evidence for the link between telecommunications and the Internet and economic growth, the likely impact of the new ICTs on income inequality and...