Beauty estimation is a common method for landscape quality estimation, although it has some limitations. With eye tracker, the visual behaviors of the subjects during the estimation can be recorded. Through the analyses of heat maps, path maps and eye movement data, the psychological changes of the subjects and the underlying law of beauty aesthetic can be understood, which will provide supplementation to beauty estimation. This paper studied the beauty estimation of urban waterfront parks and proofed that the landscape quality estimation method focussing on beauty estimation and assisted by eye movement tracking is feasible. It can improve the objectiveness and accuracy of landscape quality estimation to some extent and provide a comprehensive understanding of the effects and combination law of landscape characteristic elements.

No abstract

Two-dimensional carbon nanosheets codoped with N and P species have been successfully synthesized by a template carbonization method coupled with nitrogenization and phosphorylation processes using trisodium citrate dihydrate, melamine, and NH 4 H 2 PO 4 as C, N, and P sources, respectively. Dopants of N and P species play crucial roles in the determination of carbon porosities and electrochemical performance; notably, increasing the P content can lead to a decrease in the BET surface area together with a corresponding decrease in the electrochemical performance. For instance, regulating the mass ratio between the C source and the N and P sources to 2:1 results in the maximum BET surface area of 1340 m 2 g −1 , whereas a ratio of 1:2 results in a decreased value of only 47 m 2 g −1 . Moreover, the mass ratio of 1:1 results in superior electrochemical behaviors, with a maximum energy density that can reach up to 13.3 Wh kg −1 . The present synthesis method provides an alternative route for producing N-and P-containing carbon nanostructures with two-dimensional features, serving as excellent electrode materials for energy propagation and storage.

No abstract

No abstract