Mobile edge computing was born in 2013 and is still in the process of technology R&D and industrialization. Although it is still in the early stages of development, as one of the core technologies of 5G, it has broad development prospects; this article aims to study the design and implementation of a mobile English teaching information service platform under edge computing, so as to improve the efficiency and level of English teaching. The implication of mobile English teaching is that English teachers and students use mobile devices for English teaching and communication at the same time. This article mainly focuses on the research of mobile English teaching information service platform based on edge computing. It discusses edge computing model and edge network architecture and is based on cognitive flexibility theory, informal learning theory, and situational cognition and learning theory. A mobile English teaching model based on “listening, reading, and listening” is constructed, and a mobile English teaching information service platform is designed and implemented. After investigation and research, it is concluded that this platform can improve the efficiency of teacher scheduling by 5%–6% and the student’s 2-3% course selection efficiency.

Exploring bifunctional electrocatalysts with high efficiency, inexpensive, and easy integration is still the daunt challenge for the production of hydrogen on a large scale by means of water electrolysis. In this work, a novel free-standing Co 3 S 4 /CoMo 2 S 4 heterostructure on nickel foam by a facial hydrothermal method is demonstrated to be an effective bifunctional electrocatalyst for overall water splitting (OWS). The synthesized Co 3 S 4 /CoMo 2 S 4 electrocatalyst achieves ultralow overpotentials of 143 mV@10 mA cm −2 for hydrogen evolution reaction (HER) and 221 mV@25 mA cm −2 for oxygen evolution reaction (OER), respectively, in 1 M KOH. Moreover, it presents a greatly improved durability and stability under operando electrochemical conditions. When used as catalysts for OWS, the Co 3 S 4 /CoMo 2 S 4 -3//Co 3 S 4 /CoMo 2 S 4 -3 electrodes just need 1.514 V to make it to the current density of 10 mA cm −2 . It is supposed that the introduction of heterogeneous interface between Co 3 S 4 and CoMo 2 S 4 could give rise to plentiful active sites and enhanced conductivity, and thus boost excellent catalytic performances. Moreover, the porous feature of free-standing nanosheets on nickel foam could benefits catalytic performances by accelerating charge transport and releasing bubbles rapidly. This work proposes a bifunctional catalyst system with the heterogeneous interface, which could be used in a sustainable green energy system.

With the development of the digital age, the hardware equipment and system software of digital painting are becoming more and more popular, and the penetration of digital technology in the field of printmaking is getting deeper and deeper. However, traditional skills are gradually being eroded under the pressure of a homogeneous and efficient modern digital society. This paper aims to use the edge computing optimization model to provide a new path for the integration of digital prints and traditional prints. While retaining the exquisite skills of traditional printmaking, it also uses modern digital technology to make digital printmaking more alive. Based on this, this paper focuses on analyzing the optimization model of edge computing, and it optimizes the upload and downlink transmission for the creation of digital prints. Through experiments, it is found that the system energy consumption of the initialization scheme does not change with the change of T, while the system performance of the MEC optimization scheme has been improved, and the improvement range is between 80% and 100%. As T grows, the optimization of the task assignment variable L u will improve the overall system performance.

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