Results 21 to 30 of about 163 (116)

Fractional Order Calculus: Basic Concepts and Engineering Applications

open access: yesMathematical Problems in Engineering, Volume 2010, Issue 1, 2010., 2010
The fractional order calculus (FOC) is as old as the integer one although up to recently its application was exclusively in mathematics. Many real systems are better described with FOC differential equations as it is a well‐suited tool to analyze problems of fractal dimension, with long‐term “memory” and chaotic behavior.
Ricardo Enrique Gutiérrez   +3 more
wiley   +1 more source

Active and Passive Realization of Fractance Device of Order 1/2

open access: yesActive and Passive Electronic Components, Volume 2008, Issue 1, 2008., 2008
Active and passive realization of Fractance device of order 1/2 is presented. The crucial point in the realization of fractance device is finding the rational approximation of its impedance function. In this paper, rational approximation is obtained by using continued fraction expansion.
B. T. Krishna   +2 more
wiley   +1 more source

Evaluation of Dose‐Intense Ifosfamide, with and Without Edatrexate, in Adults with Sarcoma

open access: yesSarcoma, Volume 3, Issue 2, Page 121-127, 1999., 1999
Purpose. To define the maximally tolerated dose (MTD) of ifosfamide when given with G‐CSF on an every other week schedule, and to define the MTD of edatrexate that can be given every two weeks with an intense schedule of ifosfamide. Patients and Methods. Forty‐one patients with metastatic or unresectable, locally advanced sarcoma participated in this 2‐
Ephraim S. Casper   +4 more
wiley   +1 more source

Radiation Exposure and Shielding Effects on the Lunar Surface

open access: yesSpace Weather, Volume 22, Issue 12, December 2024.
Abstract The Moon will be a primary target for human space exploration in the near future. A limiting factor for a crewed mission to the Moon is the radiation dose during their stay on the lunar surface. While the total dose is expected to be dominated by the galactic cosmic radiation (GCR), the potential occurrence of large solar energetic particle ...
Daniel Matthiä, Thomas Berger
wiley   +1 more source

Finite‐time consensus for variable‐order fractional non‐linear multi‐agent systems under actuator faults and external disturbances

open access: yesIET Control Theory &Applications, Volume 18, Issue 14, Page 1763-1778, September 2024.
The present investigation aims to address the leader‐following consensus issue for variable‐order fractional multi‐agent systems under actuator faults and unknown external disturbances. The Caputo definition for the variable‐order fractional derivative is used to model the non‐linear dynamics of the leader and follower agents.
Ehsan Nazemorroaya   +2 more
wiley   +1 more source

Basic elements of brain-like computing: From memristor to fracmemristor

open access: yes四川大学学报. 自然科学版, 2020
In this paper, fractional-order memristor (fracmemristor), a novel basic element of brain-like computing, is discussed.The concept of memristor is extended from the conventional integer order to the fractional order, i.e. the fracmemristor. Fracmemristor
PU Yi-Fei, YU Bo, YUAN Xiao
doaj  

Medidas educativas con menores infractores: el caso de Alemania y España

open access: yesPedagogia Social Revista Interuniversitaria, 2021
La justicia juvenil desarrolla su intervención teniendo en cuenta las particularidades del momento psicoevolutivo y social de los jóvenes. La intervención con los menores infractores persigue el doble objetivo de rehabilitar al menor y evitar su reincidencia o inicio de una carrera delictiva.
Christian Roith   +2 more
openaire   +4 more sources

RVM Classification of Hyperspectral Images Based on Wavelet Kernel Non-negative Matrix Fractorization

open access: yesTELKOMNIKA (Telecommunication Computing Electronics and Control), 2015
A novel kernel framework for hyperspectral image classification based on relevance vector machine (RVM) is presented in this paper. The new feature extraction algorithm based on Mexican hat wavelet kernel non-negative matrix factorization (WKNMF) for hyperspectral remote sensing images is proposed. By using the feature of multi-resolution analysis, the
Lin Bai, Defa Hu, Meng Hui, Yanbo Li
openaire   +2 more sources

Linear phase paraunitary filter banks: theory, factorizations and designs [PDF]

open access: yesIEEE Transactions on Signal Processing, 1993
The paper presents in detail the theory, factorizations and designs of linear phase paraunitary systems for a number of channels. It is proved that all linear phase paraunitary systems can be generated simply by manipulating the coefficients of this cascade structure considered.
Soman, Anand K.   +2 more
openaire   +2 more sources

Purely Analog Fractional Order PI Control Using Discrete Fractional Capacitors (Fractors): Synthesis and Experiments

open access: yesVolume 4: 7th International Conference on Multibody Systems, Nonlinear Dynamics, and Control, Parts A, B and C, 2009
This paper presents the results of experiments related to analog fractional order PI control of a coupled tank system. A custom circuit board has been built to perform analog PID/FOPID control. Specialized circuit elements called ‘Fractors’ [1] are used to perform fractional order integration/differentiation of the error signals.
Mukhopadhyay, Shayok   +2 more
openaire   +2 more sources

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