نتایج جستجو برای: fuzzy diff erential equation

تعداد نتایج: 322507  

2002
Loukas Rossides Y. Ahmet Sekercioglu Andreas Pitsillides Athanasios V. Vasilakos Stefan Kohler Phuoc Tran-Gia

-Network congestion control remains a critical issue and a high priority. The explosion of Internet made the use of effective congestion control algorithms a necessity. The fact that Internet relies mainly on the TCP/IP protocol suggests that we must focus our efforts in this area. The existing TCP/IP protocol was designed for best effort services and can not support efficiently new user demand...

2008
Theya Molleson Krystyna Szlachetko

Our knowledge of the social and economic development of past societies and the people within them can be increased through an understanding of specialized activities. If an activity was time-consuming or arduous, especially when begun at an early age and the bones still growing, the bone morphology can be modifi ed and techniques of production used in the past are recorded. Th e predisposing re...

2005
Yohan D. Fougerolle Andrei Gribok Sebti Foufou Frédéric Truchetet Mongi A. Abidi

We propose a method to represent solid objects as multiple combinations of globally deformed supershapes. Our approach handles primitives that have both parametric and implicit representations. An implicit equation with guaranteed di erential properties is obtained by combinations of the primitives' implicit representations using R-functions. The surface corresponding to the zero-set of the imp...

2000
Fabian Wirth

We present a scheme for the determination of control Lyapunov functions which can be used as a basis for numerical computations. Under the assumption of local asymptotic nullcontrollability we de ne the domain of asymptotic nullcontrollability. On this set a control Lyapunov function is de ned via an optimal control problem. It is then shown that this function can be characterized as the unique...

1995
Tatsuya Ueno

We reformulate the self-dual Einstein equation as a trio of di erential form equations for simple two-forms. Using them, we can quickly show the equivalence of the theory and 2D sigma models valued in in nite-dimensional group, which was shown by Park and Husain earlier. We also derive other eld theories including the 2D Higgs bundle equation. This formulation elucidates the relation among thos...

2017
Antonio Villa Francesca Campagna Giulia Gallotta Riccardo Bennicelli Paola Sartori

In literature, acute pancreatitis has been shown to be associated with a wide range of electrocardiographic changes. In the present report, we describe a case of a young woman who presented to our emergency room with chest pain and electrocardiographic alterations suggestive of myocardial ischemia; laboratory data showed elevated amylase and lipase levels. A computed tomography (CT) scan of the...

In this paper, we introduce and study fuzzy variational-like inclusion, fuzzy resolvent equation and $H(cdot,cdot)$-$phi$-$eta$-accretive operator in real  uniformly smooth Banach spaces. It is established that fuzzy variational-like inclusion is equivalent to a fixed point problem as well as to a fuzzy resolvent equation. This equivalence is used to define an iterative algorithm for solving fu...

Journal: :Applied Mathematics and Computation 2001
J. M. Soriano

It is proven that an initial value problem of an autonomous system verifying some conditions has exactly one open continuously di€erentiable trajectory on R, whose limit set is not one point. The proof of the result is based upon continuation methods. 1. Preliminaries Di€erential equations play a key role in nature and technology because they control their processes. In time-dependent processes...

2003
Chrysostomos Chrysostomou Andreas Pitsillides George Hadjipollas Y. Ahmet Sekercioglu Marios M. Polycarpou

This paper presents a new active queue management scheme, Fuzzy Explicit Marking (FEM), implemented within the differentiated services (Diff-Serv) framework to provide congestion control using a fuzzy logic control approach. Network congestion control remains a critical and high priority issue. The rapid growth of the Internet and increased demand to use the Internet for timesensitive voice and...

In this paper, we interpret a fuzzy differential equation by using the strongly generalized differentiability concept. Utilizing the Generalized characterization Theorem. Then a novel hybrid method based on learning algorithm of fuzzy neural network for the solution of differential equation with fuzzy initial value is presented. Here neural network is considered as a part of large eld called ne...

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