The Establishment of Distance Learning System Based on Power Line Communication Technology

2013 ◽  
Vol 321-324 ◽  
pp. 2764-2767
Author(s):  
Chao Lv ◽  
Ying Hong
Keyword(s):  
Communication Network ◽  
Distance Learning ◽  
Communication Technology ◽  
Telecommunication Network ◽  
Rapid Development ◽  
Power Line ◽  
Learning System ◽  
Power Line Communication ◽  
Technology Study ◽  
Distance Learning System

Power Line Communication network has drawn more and more attention and achieved rapid development with its advantages of vast resources and low cost compared with telecommunication network and cable television network. Based on the advantages of Power Line Communication technology, the hardware system was formatted applying four-tier B/S architecture, and the distance learning system based on Power Line Communication technology was established using ASP (Active Server Page) technology. Study shows that the Power Line Communication network is a reliable network learning resources, of great significance to promote distance learning, especially in areas without Internet coverage.

Impact of broadband power line communication on high frequency equipment using impact analysis

Frequenz ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Yuzhe Zhou
Keyword(s):  
Communication Technology ◽  
Communication System ◽  
High Frequency ◽  
Large Scale ◽  
Impact Analysis ◽  
Rapid Development ◽  
Power Line ◽  
Power Line Communication ◽  
The Impact ◽  
Carrier Communication

Abstract With the rapid development of broadband carrier communication technology, the power line communication market is growing. However, the frequency band of power line communication overlaps with other radio services, mainly the High Frequency (HF) radio services. In addition, power line communication may have electromagnetic leakage in the open air. Large-scale power line communication system will give a much greater interference to some critical HF radio services. In this paper, the standards and researches relative to the power line communication system are reviewed. Based on existing studies, impact analysis which includes the impact probability and severity of the power line communication system on HF equipment is proposed. In addition, explicit explanations are provided. The proposed impact analysis methods are applied to simulations and evaluations. Numerical results demonstrate that a large-scale power line communication system will cause additional ambient noise, which affects the performance and reliability of HF equipment with a high probability.

Design of Distance Learning System for Dance Movement Based on Wireless Network Communication Technology

2022 ◽  
Author(s):  
Junya Shao ◽  
Xin Li
Keyword(s):  
Distance Learning ◽  
Wireless Network ◽  
Communication Technology ◽  
Online Teaching ◽  
Learning System ◽  
Superior Performance ◽  
Network Communication ◽  
Dance Movement ◽  
Teaching System ◽  
Distance Learning System

The traditional teaching system uses local area network to realize online teaching, which leads to high stability and hardware load of the teaching system and makes it difficult to meet the teaching demand. To solve the above problems, a dance movement distance learning system based on wireless network communication technology is designed. On the B/S architecture, the hardware control module and communication module of the system are designed. The fuzzy set principle is used to evaluate the students’ dance cognitive ability, so as to personalize the recommended teaching contents. The teaching video is compressed according to H.264/AV compression standard to reduce the system transmission and processing load. The system functionality test results show that the maximum transmission packet loss rate of the designed system is 8.3%, and the lost data does not interfere with teaching, has low computer memory consumption, and has superior performance.

Development of distance learning system by using satellite communication network

2002 ◽  
Vol 33 (8) ◽  
pp. 41-50
Author(s):  
Takeshi Tanigawa ◽  
Shigeo Ikeura ◽  
Masahiro Anzai ◽  
Isao Kaneko
Keyword(s):  
Communication Network ◽  
Distance Learning ◽  
Satellite Communication ◽  
Learning System ◽  
Distance Learning System

E-learning experience in schools and colleges with 1C:Education platform

2020 ◽  
pp. 17-24
Author(s):  
T. A. Chernetskaya ◽  
N. A. Lebedeva
Keyword(s):  
Distance Learning ◽  
General Education ◽  
Learning Experience ◽  
Educational Process ◽  
Learning System ◽  
Full Time ◽  
Distance Learning System ◽  
Teachers And Students ◽  
E Learning ◽  
Mass Organization

The article presents the experience of mass organization of distance learning in organizations of secondary general and vocational education in March—May 2020 in connection with the difficult epidemiological situation in Russia. The possibilities of the 1C:Education system for organizing the educational process in a distance format, the peculiarities of organizing distance interaction in schools and colleges are considered, the results of using the system are summarized, examples of the successful use of the system in specific educational organizations are given. Based on the questionnaire survey of users, a number of capabilities of the 1C:Education system have been identified, which are essential for the full-fledged transfer of the educational process from full-time to distance learning. The nature and frequency of the use of electronic educational resources in various general education subjects in schools and colleges are analyzed, the importance of the presence in the distance learning system not only of a digital library of ready-made educational materials, but also of tools for creating author’s content is assessed. On the basis of an impersonal analysis of user actions in the system, a number of problems were identified that teachers and students faced in the process of an emergency transition to distance learning.

DISTANCE LEARNING AND INFORMATION SECURITY

2021 ◽  
pp. 51-65
Author(s):  
Andrei V. Gavrilenko ◽  
Keyword(s):  
Distance Education ◽  
Distance Learning ◽  
Information Security ◽  
Learning System ◽  
Learning Problems ◽  
Security Assessment ◽  
Critical Nodes ◽  
Distance Learning System ◽  
Principal Directions ◽  
The University

The article considers an issue of information security of the distance education systems. It analyzes the functions and architecture of the typical distance education system. With considering the requirements of information security it also discusses the university information system for solving the distance learning problems. The author defines valuable assets and information resources and describes the existing security threats. The subjects of interaction in the distance learning mode are presented. There is a consideration of the principal directions of the university’s activity in the distance learning system, requiring constant monitoring of information security. A threat model is worked out and the main security vulnerabilities are highlighted. The analysis of the causes and consequences of information security violation in the distance learning system is carried out and most vulnerable and critical nodes were identified. The hardware and software requirements for the remote mode work are regarded. A recommended list of hardware and software tools that ensure compliance with safety requirements is presented. The major lines of protection for distance learning systems are highlighted. The article proves the necessity of conducting a regular security assessment as a means for monitoring an effectiveness of the protection system.

Implementation of Power Line Communication (PLC) for Monitoring Current Use at State Polytechnic of Malang

2018 ◽  
Vol 7 (2) ◽  
pp. 36-39
Author(s):  
Galuh Lukitasari ◽  
Aad Hariyadi ◽  
Ridho Hendra Yoga Perdana
Keyword(s):  
Communication Technology ◽  
Communication Technologies ◽  
Power Line ◽  
Current Sensor ◽  
Power Line Communication ◽  
Data Errors ◽  
Electric Grids ◽  
Current Usage ◽  
Current Value ◽  
A Current

One of the communication technologies that can be used for monitoring current usage is communication technology via electric grids or what is called Power Line Communication (PLC). The advantages of this technology are that the electricity network is already distributed in each building so there is no need for new installations, it is economical and affordable in terms of economics, and is more practical and flexible in its use. In this study, a current usage monitoring system using PLC is proposed which will be applied in every class in the AI ??building of Malang State Polytechnic. The sensor that will be used in measuring the current value is the current sensor SCT-013. By using the KQ330 PLC module as a PLC transmission modem. The implementation of PLC which is applied in each class in the AI ??building has a BER (bit error rate) value of 0.012 in the experiment of sending 1000 data with an error of 12 times at the farthest distance of approximately 15 meters. And have a BER value of 0 or have no error in sending data at the closest distance of approximately 2-5 meters. In this study, the process of sending and receiving data using Power Line Communication allows it to be done at a distance that is not too far away to avoid excessive data errors.

Sub-channel assignment and link schedule for In-Home power line communication network

2017 ◽  
Vol 11 (5) ◽  
pp. 673-679 ◽  
Author(s):  
Yuwen Qian ◽  
Ziyang Wang ◽  
Jun Li ◽  
Tongfang Zhang ◽  
Feng Shu
Keyword(s):  
Communication Network ◽  
Channel Assignment ◽  
Power Line ◽  
Power Line Communication ◽  
Link Schedule
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