The study aims to respond to the difficulties in establishing an index system in financial performance management and ensuring the security of wireless sharing network and the local extremum and slow convergence speed of the traditional BP neural network (BPNN). First, Levenberg–Marquardt (LM) is used to optimize BPNN, and an improved BPNN is proposed. Second, the financial performance evaluation system of listed companies based on BPNN is constructed. Finally, a wireless network infusion detection system based on the improved BPNN is proposed and tested by constructing datasets and a real test environment. The results show that (1) the financial performance evaluation system of listed enterprises constructed can evaluate the financial performance of listed enterprises with fewer errors. It is easy to operate, and it has high accuracy and the abilities of self-learning and self-adaptation; (2) Wireless Infusion Detection System (WIDS) based on the improved BP algorithm has a high detection rate and a low error rate. The study provides important technical support for listed enterprises to improve the financial performance management level and market competitiveness and strengthen the security protection of networks.
In this article, a hybrid Haar wavelet collocation method (HWCM) is proposed for the ill-posed inverse problem with unknown source control parameters. Applying numerical techniques to such problems is a challenging task due to the presence of nonlinear terms, unknown control parameter sources along the solution inside the given region. To find the numerical solution, derivatives are discretized adopting implicit finite-difference scheme and Haar wavelets. The computational stability and theoretical rate of convergence of the proposed HWCM are discussed in detail. Two numerical experiments are incorporated to show the well-condition behavior of the matrix obtained from HWCM and hence not required to supplement some regularization procedures. Moreover, the numerical solutions of the considered experiments illustrate the reliability, suitability, and correctness of HWCM.
With the growing importance of digital marketing among companies, it is essential for the companies, especially the SMEs, to take a proactive approach in utilizing the digital marketing channels. The purpose of this essay is to investigate SMEs' digital marketing usage in Chaozhou and to provide recommendations for its future development. Factors which have negative impact on adopting digital marketing channels among SMEs in Chaozhou are identified based on the findings originated from the interviews and survey conducted among SMEs managers and owners respectively in Chaozhou, followed by the recommendations to minimize the impact of factors.
With the advancement of digital technology, new means and methods are being offered in education to enhance teaching-learning. The use of technology in educational interventions has a positive impact on the students’ functional, cognitive, and psychomotor skills. This study aims to improve the teaching mode of ideological and political education (IPE). The research work intends to enhance enthusiasm of college students for ideological and political course (IPC). Based on 5G technology, the rising virtual reality (VR) technology is proposed in this study to improve IPC in colleges and universities. To begin with, the background of IPE and VR technology is introduced. Next, the current college students’ attitudes toward IPE and VR technology are investigated by a questionnaire survey. Finally, based on the red hero culture, the VR system for IPE is designed. Results of the evaluation show that the students who have been the members of the Communist Party have the highest degree of interest for IPC in colleges and universities. Endorsing the fact, about 29.7% college students and 26.81% university students who were members of the communist youth league favored for IPC, while only 14.29% of the masses showed interest for IPC. As a whole, 25.2% of all the students participated in the survey showed their interest for IPC. One of the main reasons behind the results is the teaching mode and means that attract students for IPC. At present, 84.11% of the ideological and political teachers give a lecture of IPC via PPT, while 67.29% of the students prefer the Internet platform as a means of IPC. About 73.4% of the students know VR and are interested in the application of VR to IPC. They believe that VR can help them understand the knowledge of IPC and has broad prospects in improving the teaching quality of IPE. The designed VR system for IPE which is used in colleges and universities has four modules, namely, the preamble module of graphic history, the hero wall module, the hero art sculpture module, and the scene experience module. This system can help realize the objective of IPE in colleges and universities and provides a reference for the application of VR in enhancing IPE.
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