Beijing University of Posts and Telecommunications

About: Beijing University of Posts and Telecommunications is a education organization based out in Beijing, Beijing, China. It is known for research contribution in the topics: MIMO & Quality of service. The organization has 39576 authors who have published 41525 publications receiving 403759 citations. The organization is also known as: BUPT.

Propagation analysis and prediction of the COVID-19

Abstract: Based on the official data modeling, this paper studies the transmission process of the Corona Virus Disease 2019 (COVID-19). The error between the model and the official data curve is within 3%. At the same time, it realized forward prediction and backward inference of the epidemic situation, and the relevant analysis help relevant countries to make decisions.

The Role of Data Analysis in the Development of Intelligent Energy Networks

Abstract: Data analysis plays an important role in the development of intelligent energy networks (IENs) This article reviews and discusses the application of data analysis methods for energy big data The installation of smart energy meters has provided a huge volume of data at different time resolutions, suggesting data analysis is required for clustering, demand forecasting, energy generation optimization, energy pricing, monitoring and diagnostics The currently adopted data analysis technologies for IENs include pattern recognition, machine learning, data mining, statistics methods, etc However, existing methods for data analysis cannot fully meet the requirements for processing the big data produced by the IENs and, therefore, more comprehensive data analysis methods are needed to handle the increasing amount of data and to mine more valuable information

Enhanced photocatalytic performance of Ag3PO4 by simutaneous loading of Ag nanoparticles and Fe(III) cocatalyst

Abstract: Enhanced light absorption and effective separation of photogenerated charges are the main strategies to improve the photocatalytic performance of photocatalytic materials. In this study, the enhanced light absorption and effective separation of photogenerated charges in Ag3PO4 photocatalyst can be easily realized via the simultaneous loading of Ag nanoparticles and Fe(III) cocatalyst. In this case, the noble metallic Ag nanoparticles not only function as a visible-light active component to strongly absorb visible light owing to its localized surface plasmon resonance, but also can improve the bandgap visible-light absorption of Ag3PO4, resulting in the generation of more photogenerated charges. Photocatalytic experimental results suggested that the simultaneously modified Fe(III)/Ag–Ag3PO4 photocatalyst showed an obviously higher photocatalytic activity than the pure Ag3PO4, and single-component modified Fe(III)/Ag3PO4 and Ag–Ag3PO4 photocatalysts. On the basis of the experimental results, a possible synergistic effect mechanism of Ag nanoparticles and Fe(III) cocatalyst was proposed to account for the improved photocatalytic performance of Fe(III)/Ag–Ag3PO4 photocatalyst, namely, the metallic Ag nanoparticles cause an obviously enhanced visible-light absorption to produce more photogenerated charges, while the Fe(III) works as an effective active site for the following oxygen reduction to reduce the recombination rate of photogenerated electrons and holes. The present work can provide some new insight for the smart design and preparation of new high-performance photocatalytic materials.

Interaction properties of solitonics in inhomogeneous optical fibers

Abstract: In this paper, a generalized nonlinear Schrodinger equation with variable dispersion and nonlinear coefficients, which can be used to describe the pulse transmission in inhomogeneous optical fibers, is investigated analytically. By virtue of the Hirota method, analytic multiple soliton solutions are obtained. Interactions between solitonics are presented through choosing specific nonlinearity functions, and interaction properties of them are analyzed. Results obtained may potentially be useful in the area of optical communications.