Recent Advances in Electrical & Electronic Engineering - Volume 14, Issue 1, 2021

Background: In order to solve the safety hazard of computer network security, a special congestion control strategy is adopted. Methods: This strategy is used to discuss the design and implementation technology of a network adapter, a bridge, concentrator, a device driver, Netware interface software, and a complete set of FDDI optical fiber computer networks. The following functions i.e. source address tracking, fra Read More

Background: Min-min and max-min algorithms were combined on the basis of the traditional genetic algorithm to make up for its shortcomings. Methods: In this paper, a new cloud computing task-scheduling algorithm that introduces min-min and max-min algorithms to generate initialization population, selects task completion time and load balancing as double fitness functions, and improves the quality of initialization populati Read More

Background: Mass movement trajectory data with real scenarios has been evolved with big data mining to solve the data redundancy problem. Methods: This paper proposes a parallel path based on the Map Reduce compression method, using two kinds of piecewise point mutual crisscross, the classified method of trajectory, and then segment trajectory distribution to multiple nodes to parallelize the compression. Results: Fi Read More

Background: Background: To improve the information efficiency in web text mining, filtration is utilized. Methods:A web content mining technology based on web text mining, augmented information support (AIS), is proposed for improving the web text mining efficiency. Additionally, the AIS technology is applied to the Xiangshan science conference website, and AIS4XSSC text mining system is developed. The developed syst Read More

Background: In the recent era of technology, the traditional Ant Colony Algorithm (ACO) is insufficient in solving the problem of network congestion and load balance, and network utilization. Methods: This paper proposes an improved ant colony algorithm, which considers the price factor based on the theory of elasticity of demand. The price factor is denominated in the impact on the network load which means indirect control o Read More

Background: At present, China's logistics industry is trying to change from laborintensive to technology-intensive, from the traditional model to modernization, intelligent upgrade, accompanied by the application and popularization of various advanced technologies and equipment. Nowadays, intelligent robots with functions such as handling, stacking, and sorting have become a hot topic in the logistics industry. To s Read More

Background: In order to obtain reliable cloud resources, reduce the impact of resource node faults in cloud computing environment and reduce the fault time perceived by the application layer, a task scheduling model based on reliability perception is proposed. Methods: The model combines the two-parameter weibull distribution and analyzes various interaction relations between parallel tasks to describe the local characteris Read More

Background: To solve an electric power enterprise for a safe operation of power systems. Methods: A data acquisition technology based on multi-thread mechanism of data collection technology is proposed; its application may provide a data acquisition rate of 1832/min and an update cycle of approximately 30 s to ensure efficient and reliable performance on a large-scale electric power realtime data acquisition. Results: A pow Read More

Background: In order to study the interference of wired transmission mode on robot motion, a mobile robot attitude calculation and debugging system based on radio frequency (RF) technology are proposed. Methods: Microcontroller STM32 has been used as the control core for the attitude information of the robot by using MEMS gyroscope and accelerometer. The optimal attitude Angle of the robot is calculated through nRF Read More

Background: Patch antennas are composed of the substrate material with patch and ground plane on both sides of the substrate. The dimensions and performance characteristics of the antenna are highly influenced by choice of the appropriate substrate depending upon the value of their dielectric constant. Generally, low index substrate materials are used to design the patch antenna, but there are also some of the applic Read More

Background: Brushless DC motors are highly efficient motors due to their high torque to weight ratio, compact design, high speed operating capability and higher power density. Conventional Hall sensor based rotor position sensing is affected by the heating, vibration, interference and noise. Objective: The innovative, cost-effective and easily implementable sensorless techniques are essential in order to achieve high eff Read More

Background: Electrical trees can affect the distribution of electric field and space charge in cross-linked polyethylene (XLPE) cables, and play an important role in insulation aging and breakdown of cables. Therefore, it is important to study the influence of electrical trees in cables. Methods: In this study, the finite element method of second-order tetrahedral element and electromagnetic theory method is used for calculation. A Read More

Background: Community detection is significant for the understanding of the structure and function of networks, and becomes an attractive topic for researchers. However, many existing local methods only focus on disjoint communities and some recently proposed overlapping community detection methods are global methods with high computational cost. Objective: To improve the accuracy and speed of community detec Read More