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Wyszukujesz frazę "network equations" wg kryterium: Temat


Wyświetlanie 1-6 z 6
Tytuł:
On Network Models and the Symbolic Solution of Network Equations
Autorzy:
Reinschke, K. J.
Powiązania:
https://bibliotekanauki.pl/articles/908328.pdf
Data publikacji:
2001
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
sieć wielowymiarowa
teoria grafów
history of network theory
network graphs
network equations
modified nodal analysis
admittance representation of multi-ports
multidimensional networks
Opis:
This paper gives an overview of the formulation and solution of network equations, with emphasis on the historical development of this area. Networks are mathematical models. The three ingredients of network descriptions are discussed. It is shown how the network equations of one-dimensional multi-port networks can be formulated and solved symbolically. If necessary, the network graph is modified so as to obtain an admittance representation for all kinds of multi-ports. N-dimensional networks are defined as graphs with the algebraic structure of N-dimensional vectors. In civil engineering, framed structures in two and three spatial dimensions can be modeled as 3-dimensional or 6-dimensional networks. The separation of geometry from topology is a characteristic feature of such networks.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2001, 11, 1; 237-269
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A smart amalgamation of spectral neural algorithm for nonlinear Lane-Emden equations with simulated annealing
Autorzy:
Khan, N. A.
Shaikh, A.
Powiązania:
https://bibliotekanauki.pl/articles/91814.pdf
Data publikacji:
2017
Wydawca:
Społeczna Akademia Nauk w Łodzi. Polskie Towarzystwo Sieci Neuronowych
Tematy:
Lane-Emden equations
simulated annealing
legendre polynomials
neural network
Opis:
The actual motivation of this paper is to develop a functional link between artificial neural network (ANN) with Legendre polynomials and simulated annealing termed as Legendre simulated annealing neural network (LSANN). To demonstrate the applicability, it is employed to study the nonlinear Lane-Emden singular initial value problem that governs the polytropic and isothermal gas spheres. In LSANN, minimization of error is performed by simulated annealing method while Legendre polynomials are used in hidden layer to control the singularity problem. Many illustrative examples of Lane-Emden type are discussed and results are compared with the formerly used algorithms. As well as with accuracy of results and tranquil implementation it provides the numerical solution over the entire finite domain.
Źródło:
Journal of Artificial Intelligence and Soft Computing Research; 2017, 7, 3; 215-224
2083-2567
2449-6499
Pojawia się w:
Journal of Artificial Intelligence and Soft Computing Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Score level and rank level fusion for KINECT-based multi-modal biometric system
Autorzy:
Rahman, Md Wasiur
Zohra, Guellati Fatma
Gavrilova, Marina L.
Powiązania:
https://bibliotekanauki.pl/articles/91778.pdf
Data publikacji:
2019
Wydawca:
Społeczna Akademia Nauk w Łodzi. Polskie Towarzystwo Sieci Neuronowych
Tematy:
Lane-Emden equations
simulated annealing
legendre polynomials
neural network
Opis:
Computational intelligence firmly made its way into the areas of consumer applications, banking, education, social networks, and security. Among all the applications, biometric systems play a significant role in ensuring an uncompromised and secure access to resources and facilities. This article presents a first multimodal biometric system that combines KINECT gait modality with KINECT face modality utilizing the rank level and the score level fusion. For the KINECT gait modality, a new approach is proposed based on the skeletal information processing. The gait cycle is calculated using three consecutive local minima computed for the distance between left and right ankles. The feature distance vectors are calculated for each person’s gait cycle, which allows extracting the biometric features such as the mean and the variance of the feature distance vector. For Kinect face recognition, a novel method based on HOG features has been developed. Then, K-nearest neighbors feature matching algorithm is applied as feature classification for both gait and face biometrics. Two fusion algorithms are implemented. The combination of Borda count and logistic regression approaches are used in the rank level fusion. The weighted sum method is used for score level fusion. The recognition accuracy obtained for multi-modal biometric recognition system tested on KINECT Gait and KINECT Eurocom Face datasets is 93.33% for Borda count rank level fusion, 96.67% for logistic regression rank-level fusion and 96.6% for score level fusion.
Źródło:
Journal of Artificial Intelligence and Soft Computing Research; 2019, 9, 3; 167-176
2083-2567
2449-6499
Pojawia się w:
Journal of Artificial Intelligence and Soft Computing Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Distributed certificate authority in cluster-based manet using multi secret sharing scheme
Autorzy:
Azza, M
Hacene, S B
Powiązania:
https://bibliotekanauki.pl/articles/101930.pdf
Data publikacji:
2015
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
secret sharing scheme
clustering
mobile ad hoc network
overdetermined system
linear equations
Galois fields
certificate authority
Opis:
Providing secure communications in mobile ad hoc networks (MANET) is an important and difficult problem, due to a lack of a key management infrastructure. The authentication is an important security service in (MANETs). To provide a node authentication service we use a fully distributed certificate authorities (FDCA) based on the threshold cryptography. In this paper we propose an efficient and verifiable multi secret sharing scheme in cluster-based MANET with a low computation system. Our scheme is based on the overdetermined linear system equation in Galois fields GF(2r). We have analyzed our scheme based on security and performance criteria, and compared with existing approaches. The efficiency of our proposed schemes was verified and evaluated by simulation. Simulation results show that this approach is scalable.
Źródło:
Advances in Science and Technology. Research Journal; 2015, 9, 28; 1-9
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Transient flow in gas networks: Traveling waves
Autorzy:
Gugat, M.
Wintergerst, D.
Powiązania:
https://bibliotekanauki.pl/articles/331492.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
traveling wave
isothermal Euler equations
compressibility factor
gas network
blow-up
optimal control
fala wędrująca
równania Eulera
współczynnik ściśliwości
sieć gazowa
sterowanie optymalne
Opis:
In the context of gas transportation, analytical solutions are helpful for the understanding of the underlying dynamics governed by a system of partial differential equations. We derive traveling wave solutions for the one-dimensional isothermal Euler equations, where an affine linear compressibility factor is used to describe the correlation between density and pressure. We show that, for this compressibility factor model, traveling wave solutions blow up in finite time. We then extend our analysis to networks under appropriate coupling conditions and derive compatibility conditions for the network nodes such that the traveling waves can travel through the nodes. Our result allows us to obtain an explicit solution for a certain optimal boundary control problem for the pipeline flow.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2018, 28, 2; 341-348
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nonstationary analysis of a queueing network with positive and negative messages
Autorzy:
Matalytski, M.
Naumenko, V.
Powiązania:
https://bibliotekanauki.pl/articles/122613.pdf
Data publikacji:
2013
Wydawca:
Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Tematy:
information systems
telecommunications systems
information networks
telecommunications networks
virus
open G-network with negative messages
transient behavior
system of difference-differential equations
probability states
generating function
Opis:
This paper contains an investigation of an open queueing network with positive and negative messages that can be used to model the behavior of viruses in information and telecommunication systems and networks. The purpose of research is investigation of such a network at the transient behavior. We consider the case when the intensity of the incoming flow of positive and negative messages and service intensity of messages do not depend on time. It is assumed that all queueing systems of network are one-line. We obtained a system difference-differential equations for the state probabilities of the network. To find the state probabilities of the network in the transitional behavior applied a methodology based on the use of the apparatus of multidimensional generating functions. We obtained an expression for generating function. An example is calculated.
Źródło:
Journal of Applied Mathematics and Computational Mechanics; 2013, 12, 2; 61-71
2299-9965
Pojawia się w:
Journal of Applied Mathematics and Computational Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-6 z 6

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