Summary In view of the problem that the traditional face recognition algorithm cannot be effectively applied to the identification of mobile payment, a lightweight improvement scheme of the dynamic heteroscedasticity based on the classical scale transformation algorithm is proposed, which can automatically study and adaptively add the reliable test samples to the training sample space, with reasonable division and scientific weight distribution characteristics, so that the scheme can improve both the recognition rate and running time. The improved algorithm is tested in the ORL face database and Yale face database, respectively, with the recognition rate improved by 6.13% and 14.11%, and the operating efficiency increased by 9.1% and 4.7%, respectively, compared with the classic scale transformation algorithm. The recognition rate in the ORL face database has achieved 74.05%, with significant improvement compared with PCA, LBP, and other classic algorithms. And the mobile payment scheme is implemented in Android smart phones. The experimental data has verified the feasibility of the improved algorithm in the Android system. Finally, an improved scheme based on the cloud architecture is proposed.

Summary With the continuous development of communication technology and computer network technology and the continuous progress of social economy, information technology has penetrated into all aspects of people's lives. The basic task of communication network is to ensure the reliability and security of information transmission. Based on the above background, the purpose of this study is to study the application of information communication network security management and control based on big data technology. Based on the concept and management and control structure of information communication network, combined with the data collection and preprocessing in big data technology, this study analyzes the feasibility of big data technology applied in communication network management and control and expounds the specific application of big data technology from the four aspects of troubleshooting, security protection, business management, and resource allocation. At last, the test environment of information communication network security management and control platform based on big data technology is built in the laboratory to test the network management performance and routing transmission performance of the system. The experimental results show that the communication success rate of the information communication network security management and control platform based on big data technology remains to 91.78%. It can be seen from the test results that the information communication network security management and control platform based on big data technology can not only accurately collect sensor data but also have the function of real‐time monitoring network status and reconfiguration of nodes.

Abstract-The purpose is to construct smart park platform by using the Internet of Things technology, to realize the access of intelligent systems and equipment within park, and to effectively coordinate the various systems in the park. Taking advantage of the key technologies of Internet of Things and cloud computing, smart park information hardware architecture and technical solutions are put forward, the sensor and wireless Internet of Things are applied to realize the system. The experimental results showed that the system realizes the information sharing, exchange and fusion between the various sensing subsystems, and solves the information islands phenomenon that existed in the past. In conclusion, this system can meet the actual needs of smart park, and provides a certain reference for similar park construction. Keywords-Internet of Things, cloud computing, smart park IntroductionAt the present, the construction and development of China's smart city is closely related to all walks of life. The construction of smart park refers to concept and theory of smart city to a large extent, it is a regional epitome, and its development model can effectively promote smart city's construction and development [1]. This paper summarizes and concludes the high-quality ideas and detours of smart park development, rapidly and timely revises development program and ideas of smart park, thereby effectively promote the development of smart city. In present, the Internet of Things technology is still in the initial stage, a variety of technologies have to be developed and improved. The technology and level of information processing analysis determine the intelligent processing level of Internet of Things to a large extent. Cloud computing and intelligent identification are the mainly advanced technology [2]. Among them, the status of cloud computing is particularly significant; it is the core of the Internet of Things. It effectively promotes the integration IoT and Internet, and improves the realization of intelligence earth.The purpose of smart park construction is multifaceted, but mainly through the construction of smart park to solve the problems like poor communication, duplication resources and information island, to achieve business and park win-win goal [3]. Therefore, the purpose of this study is to study and propose an effective solution to 134

Photoluminescence properties of fluorescent hydrogels are strongly influenced by the supramolecular organization of the chromophores, which make their modulation nontrivial. In this work, a series of fluorescent hydrogels with different...