Results 11 to 20 of about 162 (116)

Measurement Units and Physical Dimensions of Fractance-Part I: Position of Purely Ideal Fractor in Chua’s Axiomatic Circuit Element System and Fractional-Order Reactance of Fractor in Its Natural Implementation

open access: yesIEEE Access, 2016
Here and in the companion paper (Part II), a novel conceptual framework on the measurement units and physical dimensions of fractance and rules for fractors in series and parallel is mainly discussed.
Yi-Fei Pu
doaj   +2 more sources

Measurement Units and Physical Dimensions of Fractance-Part II: Fractional-Order Measurement Units and Physical Dimensions of Fractance and Rules for Fractors in Series and Parallel

open access: yesIEEE Access, 2016
Here and in the companion paper (Part I), a novel conceptual framework on the measurement units and physical dimensions of fractance and rules for fractors in series and parallel is mainly discussed.
Yi-Fei Pu
doaj   +2 more sources

Geothermal Fluid Variation Recorded by Banded Ca‐Carbonate Veins in a Fault‐Related, Fissure Ridge‐Type Travertine Depositional System (Iano, southern Tuscany, Italy)

open access: yesGeofluids, Volume 2021, Issue 1, 2021., 2021
Banded Ca‐carbonate veins in travertine deposits are efficient recorders of the compositional fluctuations of geothermal fluids flowing (or flowed) from deep reservoirs up to the surface, within fault zones. In this view, these veins represent key tools for decoding those factors that influenced the geochemical variations.
Paola Francesca Matera   +11 more
wiley   +1 more source

Relative Permeability of Porous Media with Nonuniform Pores

open access: yesGeofluids, Volume 2020, Issue 1, 2020., 2020
Most classical predictive models of relative permeability conceptualize the pores in porous media as assemblies of uniform capillary tubes with different sizes. However, this simplification may overestimate the transport capacity of porous media due to overlooking the effects of the pore nonuniformity.
He Chen   +4 more
wiley   +1 more source

Application of multivariate analysis of vari-ance (MANOVA) to distance refractive vari-ability and mean distance refractive state

open access: yesAfrican Vision and Eye Health, 2006
Refractive state can be regarded as a dynam-ic quantity. Multiple measurements of refractive state can be determined easily and rapidly on a number of different occasions using an autore-fractor.
S Abelman
doaj   +1 more source

Approximation Solution of Fractional Partial Differential Equations by Neural Networks

open access: yesAdvances in Numerical Analysis, Volume 2012, Issue 1, 2012., 2012
Neural networks with radial basis functions method are used to solve a class of initial boundary value of fractional partial differential equations with variable coefficients on a finite domain. It takes the case where a left‐handed or right‐handed fractional spatial derivative may be present in the partial differential equations.
Adel A. S. Almarashi, Muhammed I. Syam
wiley   +1 more source

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

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