Enhanced water-resistant performance of Cu-BTC through polyvinylpyrrolidone protection and its capture ability evaluation of methylene blue

Water instability issue greatly restrict the application of Cu-BTC for cationic dye (e.g. methylene blue (MB)) capture from wastewater. In the present contribution, polyvinylpyrrolidone (PVP) thin film was novelty grew...

An English Teaching Ability Evaluation Algorithm Based on Frequency Effect

Background. English is one of the courses offered in all colleges and universities. The quality of English teaching is directly related to the quality of talent training and the development of students themselves. “Teaching quality evaluation” specifically refers to the education evaluation with teaching as the evaluation object. It is the core and foundation of the whole education evaluation. Teaching quality evaluation is based on certain teaching objectives and teaching norms and standards, through the systematic detection and assessment of teaching and learning. Evaluate its teaching effect and the degree of realization of teaching objectives, and use scientific and feasible methods to make corresponding value judgments to improve the process of teaching. To improve the accuracy of English teaching ability evaluation, an English teaching ability evaluation algorithm based on frequency effect is proposed. Methods. The paper proposes an English teaching ability evaluation algorithm based on frequency effect. Firstly, it constructs the evaluation index system of English teaching ability, including expert evaluation system, student evaluation system, and teacher evaluation system. Then, the indexes affecting the evaluation of English teaching ability are quantified by fuzzy synthesis, and the evaluation indexes are refined. Finally, the basic principle of frequency effect is analyzed, combined with the convolutional neural network. Results. The convolutional neural network evaluation model is constructed, the teaching ability indicators are input into the model, the final evaluation results are output, and the design of the English teaching ability evaluation algorithm based on frequency effect is completed. Conclusions. The experimental results show that this method has high accuracy and efficiency.

Research on Aiming and Tracking Ability Evaluation Model of Laser-guided Missile

Laser guidance is a continuous process, during which a lot of operational data and corresponding changes are generated. Aiming at the live-fire drill shooting training and assessment evaluation of a certain type of laser-guided missile, this paper analyzes the principle of laser guidance, studies the weighting system of the information field based on the importance of characteristic intervals, integrates and processes the data and outputs the aiming effect picture and sheet, and constructs the aiming and tracking ability evaluation model. Stationary targets and moving targets are tested respectively, and the verification model can realize the calculation of laser information field, the integration of coordinate data, the output of aiming effect diagram, and the evaluation of the shooter’s aiming and tracking ability expressed in a percentage system. The model realizes data collection, integration and processing based on MATLAB software, and builds graph and table output ports, which can realize low delay processing of a large amount of short-term data.

Quantitative Analysis on the Evaluation Indicators of Teaching Abilities of Physical Education Teachers in Colleges and Universities

This paper studies the teaching abilities of physical education (P.E.) teachers in colleges and universities. First, an evaluation indicator system for the teaching abilities of P.E. teachers in colleges and universities was constructed using the Delphi method, and then the weights of indicators at each level were determined using the expert survey method, so that a standard scale was formed for the teaching ability evaluation system. After that, empirical analysis was performed on the evaluation indicator system. The research results show that the teaching ability evaluation indicator system for P.E. teachers in colleges and universities proposed in this paper can be used to give a quantitative analysis on teachers’ teaching abilities and clearly reflect their deficiencies in teaching. This will allow teachers to understand what to improve in their teaching so that their teaching abilities will be enhanced. This research provides theoretical and practical references for the evaluation of P.E. teachers’ teaching abilities in higher education institutions in China, and thus, it is of great theoretical and practical significance to promoting the reform of P.E. teaching in higher education and the professional development of teachers.