Results 281 to 290 of about 6,290,196 (343)

Remodeling Interfacial Electrical Field for Superhigh Capacity and Ultralong Lifespan Aqueous Zinc‐Ion Batteries

open access: yesAdvanced Functional Materials, EarlyView.
The design of cathode materials is the key to solving the practical application of AZIBs. In this work, the formation of the built‐in electric field in the NVO@CC material adjusts the electronic structure, showing high specific capacity and ultra‐long cycle stability, and achieving rapid diffusion of ions and good electrochemical kinetics.
Yan Ran   +7 more
wiley   +1 more source

Rotation and Crossing Numbers for Join Products

Bulletin of the Malaysian Mathematical Sciences Society, 2020
Computing the crossing number of a graph is NP-hard. In the paper, for a disconnected 6-vertex graph $$Q =C_{5}\cup K_{1}$$ , we obtain the crossing number $$Z(6,n)+\lfloor \frac{n}{2}\rfloor $$ of the graph $$Q_{n}$$ which is the join product of Q with the discrete graph by introducing the “rotation” method.
Zongpeng Ding
semanticscholar   +4 more sources

A new way to compute the product and join of relations

Proceedings of the 1980 ACM SIGMOD international conference on Management of data - SIGMOD '80, 1980
This paper presents a new method of computing the product or join of n relations in a paged-memory environment. The method, termed the nested-block method, is an attempt to take maximum advantage of available main-memory buffer space. The problem of finding an optimal allocation of main-memory buffer space for the nested-block method of scanning n ...
Won Kim
openaire   +3 more sources

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