As a new, high-strength and clean cast iron material, nitrogen-containing gray has excellent properties wide range of application prospects. However, the material not only make machinability challenging, but also high efficiency quality machining process is pressing issue. Therefore, it necessary to study characteristics obtain optimal parameters enrich research work on iron. In this paper, are systematically studied, effects cutting milling force, temperature, surface roughness analyzed....

Abstract This paper adopts off-line location strategy of single-phase grounding fault distribution lines, determines size and frequency injected AC signal by analyzing parameters then develops portable small current source with adjustable through power conversion control technology, detector noise correlation adaptive morphological filtering. Then is developed according to above two devices. Finally, it verified that the can accurately locate point line.

Online business is gaining momentum day by in the world and Bangladesh general, number of e-commerce businesses constantly increasing which result how technology it being done getting better. Guided purpose this study "Examining importance information quality, system quality service electronic commerce websites to customer satisfaction loyalty Bangladesh", research has conducted based on knowing relationship between website loyalty. With help 450 participants, found that young people...

The development of the social public resource digital sharing system (SPRDSS) has been accelerated with evolution information and communication technologies (ICTs). This paper analyzes dissipative structure features formation process SPRDSS in China. Combined Brusselator model its transformation, this empirically using panel data collected from 30 Chinese provinces (excluding Tibet, Hong Kong, Macao, Taiwan) 2015 to 2019. results show that China pre-conditions form a structure. At present,...

Power line carrier communication uses power transmission as a medium to transmit information between data. Because of its popularity, it has been mined by many fields and commercialized. This paper combines technology monitor abnormal signals analyzes in real time through intelligent monitoring system. The main paths designed this are data link control link. When the signal transmitting base station directly connected, mode is adopted improve rate. However, when completed third party...

<title>Abstract</title> With the frequent occurrence of geopolitical, economic and military conflicts in world, supply chain security global food industry is facing serious challenges. In this paper, security(FSCS) divided into two dimensions: dependence concentration, based on cross-country panel data 68 food-producing countries around world from 2001 to 2021, firstly, analyze situation, then, constructing indexes measure agricultural scientific technological innovation, empirically...

This It is a basic trend and fundamental requirement that the telecommunication infrastructure construction needs joint forces so as to share resources for better results. paper studies background of promoting in China concludes status quo existing problems efforts sharing at current stage. As result, according game analysis China's telecom industry process which based on situation 3G network construction, author proposes corresponding countermeasures proposals accelerate from aspect...

The digital sharing of agricultural scientific and technological resources is the key to promoting innovation. Explore strategic mechanism for resources, reveal law their behavioral evolution, provide theoretical guidance practice science technology resources. Introducing perspective theory perceived utility replace expected utility, constructing a stochastic evolutionary game model parties demand analyzing dynamic evolution rules both sides resource sharing, factors affecting stability...

At present, the most common faults in low current ground fault systems are single-phase short-circuit faults. The prolonged operation of system with poses a significant threat to safety power grid. Faced complex network structure, diverse operating modes, numerous branch lines, and varied load characteristics systems, use single principle for line selection often leads slow selection, high difficulty, accuracy. Therefore, it is great significance study method suitable that can quickly,...

With the increasing pressure of global resources, environment and population, deepening power system reform, continuous improvement users' requirements for reliability quality supply system, safe, reliable, efficient interactive grid is further development direction industry in future. Combined with Internet Things technology, this paper analyzes line carrier communication technology distribution network automation, uses intelligent to output data real time. Moreover, based on extensive...

Electric load is an important factor affecting the performance of electric line carrier communication systems. It great significance to study signal processing and noise compensation algorithms for systems that consider fluctuations. This article studied a algorithm based on combination wavelet transform least squares support vector machine (LSSVM). Based impact fluctuations signals, LSSVM was improved classify process used adaptively denoise different types signals. The experimental results...

In digital clarify public resources and the coupling mechanism of urban rural integration development, on basis establishing evaluation index system, using entropy method to measure China's 30 provinces social sharing level by coordination degree model spatial doberman model, analysis features two its influencing factors. The results show that urban-rural development increased with fluctuation from 2015 2019. national average is near disordered. From perspective evolution, overall presents a...

As a new, high-strength, clean cast iron material, nitrogen-containing gray has excellent properties and wide range of application prospects. However, not only the machinability this material faces challenges, but also ability to guarantee machined surface quality while improving productivity during machining is pressing issue. The proper selection cutting parameters great importance for control process, so it necessary study its characteristics obtain optimal parameters. Previous studies...

With the rapid development of power industry and continuous progress science technology, relay protection technology has also entered intelligent development. The effectively improves supply stability system, but at same time, it puts forward new issues for workers. In actual operation management process, is required to form a different debugging scheme with corresponding device, regularly check its status, so as achieve concept fault detection timely treatment. And ensure normal system...