The high-speed computation on a distributed personal computer network by our distributed FDTD method

2002 ◽  
Author(s):  
N. Takada ◽  
T. Ito ◽  
K. Motojima ◽  
M. Ideo ◽  
T. Sato ◽  
...  
Keyword(s):  
Personal Computer ◽  
High Speed ◽  
Computer Network ◽  
Fdtd Method

A Didactical Project with a Personal Computer Network for Engineering Education

1988 ◽  
Vol 21 (8) ◽  
pp. 169-173
Author(s):  
D. Reniers ◽  
J. Vandewalle ◽  
B. De Moor
Keyword(s):  
Engineering Education ◽  
Personal Computer ◽  
Computer Network

Investigation of Contact Conditions During Stamping of a Thin Plate

2020 ◽  
Author(s):  
Harshal Y. Shahare ◽  
Rohan Rajput ◽  
Puneet Tandon
Keyword(s):  
Wave Propagation ◽  
Material Properties ◽  
High Speed ◽  
Fdtd Method ◽  
Propagation Model ◽  
Transmitted Wave ◽  
Two Dimensional ◽  
Contact Conditions ◽  
Simulation Based ◽  
Difference Time

Abstract Stamping is one of the most used manufacturing processes, where real-time monitoring is quite difficult due to high speed of the mechanical press, which leads to deterioration of the accuracy of the products In the present work, a method is developed to model elastic waves propagation in solids to measure contact conditions between die and workpiece during stamping. A two-dimensional model is developed that reduces the wave propagation equations to two-dimensional equations. To simulate the wave propagation inside the die-workpiece model, the finite difference time domain (FDTD) method and modified Yee algorithm has been employed. The numerical stability of the wave propagation model is achieved through courant stability condition, i.e., Courant-Friedrichs-Lewy (CFL) number. Two cases, i.e., flat die-workpiece interface and inclined die-workpiece interface, are investigated in the present work. The elastic wave propagation is simulated with a two-dimension (2D) model of the die and workpiece using reflecting boundary conditions for different material properties. The experimental and simulation-based results of reflected and transmitted wave characteristics are compared for different materials in terms of reflected and transmitted wave height ratio and material properties such as acoustic impedance. It is found that the numerical simulation results are in good agreement with the experimental results.

Research on the Mining Technology of Multimedia Communication Data Flow Based on Computer Network

2013 ◽  
Vol 380-384 ◽  
pp. 3570-3574
Author(s):  
Yong Hong Cheng ◽  
Li Hua Ouyang ◽  
Xin Yan Liu
Keyword(s):  
Data Stream ◽  
High Speed ◽  
Data Flow ◽  
Computer Network ◽  
Multimedia Communication ◽  
Data Stream Mining ◽  
Stream Mining ◽  
Mining Technology ◽  
Daily Work ◽  
Mining Algorithms

computer network multimedia communication has spread all over daily work and life fields, people also have put forward higher requirements for computer multimedia communication network. Based on current network multimedia communication, there are a large amount of data transmission, high-speed and dynamic characteristics, the mining technology of its communication data flow is carried out related to research. In this paper, the frequent item sets of data stream mining technology is carried out related to research, and the classical HCOUNT algorithm is carried out relevant analysis, according to the relevant analysis, the classical HCOUNT algorithm is improved, in order to alleviate possible error problem in data mining. Finally, the data stream mining algorithms are carried out relevant analysis of actual experimental data. Study on the technical aspects of the data flow mining in computer network multimedia communication, it is an important role in the development of the computer network multimedia communication. Study on the improvement of the current algorithm, it provides reference in the similar field of algorithm research

scholarly journals Preliminaries on the Accurate Estimation of the Hurst Exponent Using Time Series

2021 ◽  
Author(s):  
Ginno Millán ◽  
Román Osorio-Comparán ◽  
Gastón Lefranc
Keyword(s):  
Time Series ◽  
Hurst Exponent ◽  
High Speed ◽  
Mean Squared Error ◽  
Computer Network ◽  
Accurate Estimation ◽  
Minimum Length ◽  
Squared Error ◽  
In Series ◽  
Speed Computer

<div>This article explores the required amount of time series points from a high-speed computer network to accurately estimate the Hurst exponent. The methodology consists in designing an experiment using estimators that are applied to time series addresses resulting from the capture of high-speed network traffic, followed by addressing the minimum amount of point required to obtain in accurate estimates of the Hurst exponent. The methodology addresses the exhaustive analysis of the Hurst exponent considering bias behaviour, standard deviation, and Mean Squared Error using fractional Gaussian noise signals with stationary increases. Our results show that the Whittle estimator successfully estimates the Hurst exponent in series with few</div><div>points. Based on the results obtained, a minimum length for the time series is empirically proposed. Finally, to validate the results, the methodology is applied to real traffic captures in a high-speed computer network.</div>

PUBLIC ADMINISTRATION IN CYBERSPACE

2020 ◽  
Vol 136 (4) ◽  
pp. 23-39
Author(s):  
HENRYK WYRĘBEK ◽  
ZBIGNIEW CIEKANOWSKI
Keyword(s):  
High Speed ◽  
Computer Network ◽  
Modern Society ◽  
Social Needs ◽  
Telecommunication Networks ◽  
Basic Premise ◽  
New Approach ◽  
Speed Up ◽  
Business Entities ◽  
Modern Technologies

The turn of the twenty-fi rst century is the time of a global revolution consisting in an avalanche of modern technologies. The achievements of science and technology are used in every fi eld of human existence. The basis of functioning of modern society is the use of cyberspace. Access to mobile phones, computers and the global ICT network is a determinant of societal development. The idea of universal automation and computerisation is a fact. The possibility of using high-speed ICT connections is not only the domain of scientifi c institutions, military agents and large business entities. A global computer network connects individuals. The intensive development of modern technologies, the Internet and telecommunication networks has enabled the emergence of a new approach in communication between citizens and the state (with central and local government offi ces). It has also enabled the introduction of new solutions, models and services at this level, resulting directly from specifi c social needs and expectations. According to the assumptions of the idea of e-government, the basic premise for creating e-government is to improve contact with the authorities at all levels, and to speed up procedures for dealing with offi cial matters. Investing in modern administration may bring tangible benefi ts to citizens and entrepreneurs as well as to the administration itself.

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