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40 Results Found

  • Article
  • Open Access
16 Citations
11,064 Views
17 Pages

10 February 2011

Neurons communicate via the relative timing of all-or-none biophysical signals called spikes. For statistical analysis, the time between spikes can be accumulated into inter-spike interval histograms. Information theoretic measures have been estimate...

  • Article
  • Open Access
1 Citations
2,842 Views
27 Pages

Probability Density of Lognormal Fractional SABR Model

  • Jiro Akahori,
  • Xiaoming Song and
  • Tai-Ho Wang

2 August 2022

Instantaneous volatility of logarithmic return in the lognormal fractional SABR model is driven by the exponentiation of a correlated fractional Brownian motion. Due to the mixed nature of driving Brownian and fractional Brownian motions, probability...

  • Article
  • Open Access
6 Citations
2,781 Views
24 Pages

Odd Exponential-Logarithmic Family of Distributions: Features and Modeling

  • Christophe Chesneau,
  • Lishamol Tomy,
  • Meenu Jose and
  • Kuttappan Vallikkattil Jayamol

This paper introduces a general family of continuous distributions, based on the exponential-logarithmic distribution and the odd transformation. It is called the “odd exponential logarithmic family”. We intend to create novel distributio...

  • Feature Paper
  • Article
  • Open Access
3 Citations
4,162 Views
9 Pages

16 November 2021

A non-uniform (skewed) mixture of probability density functions occurs in various disciplines. One needs a measure of similarity to the respective constituents and its bounds. We introduce a skewed Jensen–Fisher divergence based on relative Fisher in...

  • Article
  • Open Access
2 Citations
1,272 Views
20 Pages

Testing the Isotropic Cauchy Hypothesis

  • Jihad Fahs,
  • Ibrahim Abou-Faycal and
  • Ibrahim Issa

11 December 2024

The isotropic Cauchy distribution is a member of the central α-stable family that plays a role in the set of heavy-tailed distributions similar to that of the Gaussian density among finite second-moment laws. Given a sequence of n observations,...

  • Article
  • Open Access
56 Citations
13,170 Views
35 Pages

22 July 2020

Fokker–Planck equations are extensively employed in various scientific fields as they characterise the behaviour of stochastic systems at the level of probability density functions. Although broadly used, they allow for analytical treatment onl...

  • Article
  • Open Access
2 Citations
1,571 Views
15 Pages

On Joint Universality in the Selberg–Steuding Class

  • Roma Kačinskaitė,
  • Antanas Laurinčikas and
  • Brigita Žemaitienė

1 February 2023

The famous Selberg class is defined axiomatically and consists of Dirichlet series satisfying four axioms (Ramanujan hypothesis, analytic continuation, functional equation, multiplicativity). The Selberg–Steuding class S is a complemented Selbe...

  • Article
  • Open Access
2,588 Views
18 Pages

25 June 2020

The problem of determining the best achievable performance of arbitrary lossless compression algorithms is examined, when correlated side information is available at both the encoder and decoder. For arbitrary source-side information pairs, the condi...

  • Article
  • Open Access
19 Citations
5,989 Views
26 Pages

20 August 2018

Direct Position Estimation (DPE) is a rather new Global Navigation Satellite System (GNSS) technique to estimate the user position, velocity and time (PVT) directly from correlation values of the received GNSS signal with receiver internal replica si...

  • Review
  • Open Access
9 Citations
2,801 Views
31 Pages

14 May 2021

The spreading of the stationary states of the multidimensional single-particle systems with a central potential is quantified by means of Heisenberg-like measures (radial and logarithmic expectation values) and entropy-like quantities (Fisher, Shanno...

  • Article
  • Open Access
4 Citations
3,535 Views
14 Pages

Deciphering Morphological Changes in a Sinuous River System by Higher-Order Velocity Moments

  • Jyotismita Taye,
  • Jyotirmoy Barman,
  • Bimlesh Kumar and
  • Giuseppe Oliveto

11 March 2020

Bank erosion in a sinuous alluvial channel is a continuous phenomenon resulting in bank instability and migration of sediment. In this study, flume experiments were conducted in a sinuous channel to investigate its morphological changes and hydrodyna...

  • Article
  • Open Access
29 Citations
5,628 Views
15 Pages

29 July 2015

Alpha stable noise, determined by four parameters, has been found in the random error of a laser gyroscope. Accurate estimation of the four parameters is the key process for analyzing the properties of alpha stable noise. Three widely used estimation...

  • Article
  • Open Access
1 Citations
1,864 Views
15 Pages

Parameterization of Entrainment Rate for Cumulus Clouds with WRF Simulation

  • Xiaohao Guo,
  • Huijuan Lin,
  • Jinyao Zhu and
  • Fenfen Wei

14 August 2023

By using Weather Research and Forecasting Model (WRF) to simulate a southwest vortex precipitation process, this work studies the correlations between entrainment rate (λ) and dynamical parameters in the cloud and further fit λ. We rela...

  • Article
  • Open Access
307 Views
44 Pages

10 February 2026

We propose a two-level theory that connects Lin-equation-based dynamical coarse-graining of the turbulence cascade with an information-theoretic selection principle in logarithmic wavenumber space. This framework places the dissipation-range spectral...

  • Article
  • Open Access
3 Citations
2,401 Views
17 Pages

Aspects Regarding the Physical Parameters and Wear in the Work Process of the Disc Openers for Seeding Machines

  • Bogdan Rosu,
  • Gheorghe Voicu,
  • Gabriel-Alexandru Constantin,
  • Paula Tudor and
  • Elena-Madalina Stefan

This paper primarily presents statistics on the variation of physical characteristics (dimensions and mass) for the coulter discs of double-disc seeders. This statistic was calculated based on actual measurements of the probability density and cumula...

  • Data Descriptor
  • Open Access
1 Citations
4,106 Views
8 Pages

28 February 2019

Tuberculosis is one of the most widespread worldwide diseases heavily affecting society. Among popular modern laboratory tests for mycobacterial growth, the resazurin assay has certain advantages due to its effectiveness and relatively low cost. Howe...

  • Article
  • Open Access
3 Citations
4,790 Views
12 Pages

Entropic Dynamics of Stocks and European Options

  • Mohammad Abedi and
  • Daniel Bartolomeo

6 August 2019

We develop an entropic framework to model the dynamics of stocks and European Options. Entropic inference is an inductive inference framework equipped with proper tools to handle situations where incomplete information is available. The objective of...

  • Article
  • Open Access
11 Citations
3,609 Views
26 Pages

A New Extension of the Kumaraswamy Generated Family of Distributions with Applications to Real Data

  • Salma Abbas,
  • Mustapha Muhammad,
  • Farrukh Jamal,
  • Christophe Chesneau,
  • Isyaku Muhammad and
  • Mouna Bouchane

In this paper, we develop the new extended Kumaraswamy generated (NEKwG) family of distributions. It aims to improve the modeling capability of the standard Kumaraswamy family by using a one-parameter exponential-logarithmic transformation. Mathemati...

  • Article
  • Open Access
6 Citations
3,141 Views
20 Pages

9 March 2023

Turbulence can cause effects such as light intensity fluctuations and phase fluctuations when a laser is transmitted in the atmosphere, which has serious impacts on a number of optical engineering application effects and on climate improvement. There...

  • Article
  • Open Access
3 Citations
1,916 Views
19 Pages

10 February 2025

Focusing on the three critical factors influencing laser communication systems operating in marine environments: atmospheric turbulence disturbances, atmospheric attenuation, and optical aberration effects, in this paper, we employ numerical simulati...

  • Article
  • Open Access
4 Citations
2,957 Views
14 Pages

Pinning Potential of the Self-Assembled Artificial Pinning Centers in Nanostructured YBa2Cu3O7−x Superconducting Films

  • Ion Ivan,
  • Alina M. Ionescu,
  • Daniel N. Crisan,
  • Andreea Andrei,
  • Armando Galluzzi,
  • Massimiliano Polichetti,
  • Jesus Mosqueira and
  • Adrian Crisan

17 May 2022

For high-field power applications of high-temperature superconductors, it became obvious in recent years that nano-engineered artificial pinning centers are needed for increasing the critical current and pinning potential. As opposed to the artificia...

  • Article
  • Open Access
7 Citations
4,546 Views
16 Pages

Non-Gaussianity of Four-Photon Superpositions of Fock States

  • Miguel Citeli de Freitas and
  • Viktor V. Dodonov

1 July 2021

We study two families of four-photon superpositions of the Fock states: even vacuum squeezed states (EVSS) and orthogonal-even coherent states (OECS). These families are distinguished due to several properties: for certain values of parameters, they...

  • Article
  • Open Access
8 Citations
3,409 Views
26 Pages

Study of a Modified Kumaraswamy Distribution

  • Rashad A. R. Bantan,
  • Christophe Chesneau,
  • Farrukh Jamal,
  • Mohammed Elgarhy,
  • Waleed Almutiry and
  • Amani Abdullah Alahmadi

8 November 2021

In this article, a structural modification of the Kumaraswamy distribution yields a new two-parameter distribution defined on (0,1), called the modified Kumaraswamy distribution. It has the advantages of being (i) original in its definition, mixing l...

  • Feature Paper
  • Article
  • Open Access
5 Citations
2,513 Views
18 Pages

Coarse-grained molecular dynamic simulations are employed to investigate the spatiotemporal evolution of vesicles (polymersomes) via self-assembly of randomly distributed amphiphilic diblock copolymers PB-PEO (Poly(Butadiene)-b-Poly(Ethylene Oxide))...

  • Article
  • Open Access
4 Citations
2,330 Views
13 Pages

To analyze the intensity of atmospheric turbulence in a satellite–ground laser communication link, it is important to consider the effect of increased atmospheric turbulence caused by wind speed. Atmospheric turbulence causes a change in the re...

  • Review
  • Open Access
8 Citations
9,748 Views
43 Pages

Entropy? Honest!

  • Tommaso Toffoli

30 June 2016

Here we deconstruct, and then in a reasoned way reconstruct, the concept of “entropy of a system”, paying particular attention to where the randomness may be coming from. We start with the core concept of entropy as a count associated with a descript...

  • Article
  • Open Access
3 Citations
2,022 Views
16 Pages

Geospatial Analysis of Transmissivity and Uncertainty in a Semi-Arid Karst Region

  • Thiago dos Santos Gonçalves,
  • Harald Klammler and
  • Luíz Rogério Bastos Leal

6 March 2024

Aquifer properties, such as hydraulic transmissivity T and its spatial variability, are fundamental for sustainable groundwater exploitation in arid regions. Especially in karst aquifers, spatial variability can be considerable, and the application o...

  • Article
  • Open Access
631 Views
14 Pages

In this paper we present a brief review of extended general relativity in four dimensions and solve versions of the extended equations for the case of static spherical symmetry in various contexts, for a previously studied Lagrangian. The exterior va...

  • Article
  • Open Access
9 Citations
4,318 Views
18 Pages

29 June 2021

The characteristics of low-level turbulence at Boseong, located on the southern coast of South Korea, were investigated in terms of eddy dissipation rate (EDR) using 1-year (2018) of wind data obtained from the Boseong Meteorological Observatory (BMO...

  • Article
  • Open Access
1 Citations
864 Views
24 Pages

Stochastic vibration control of uncertain structures under random loading is an important problem and its minimax optimal control strategy remains to be developed. In this paper, a stochastic optimal control strategy for uncertain structural systems...

  • Article
  • Open Access
3 Citations
729 Views
35 Pages

A New G Family: Properties, Characterizations, Different Estimation Methods and PORT-VaR Analysis for U.K. Insurance Claims and U.S. House Prices Data Sets

  • Ahmad M. AboAlkhair,
  • G. G. Hamedani,
  • Nazar Ali Ahmed,
  • Mohamed Ibrahim,
  • Mohammad A. Zayed and
  • Haitham M. Yousof

26 September 2025

This paper introduces a new class of probability distributions, termed the generated log exponentiated polynomial (GLEP) family, designed to enhance flexibility in modeling complex real financial data. The proposed family is constructed through a nov...

  • Article
  • Open Access
30 Citations
15,122 Views
30 Pages

Sustainable Slope Stability Analysis: A Critical Study on Methods

  • Ancuța Rotaru,
  • Florin Bejan and
  • Dalia Almohamad

19 July 2022

When studying the stability of a slope, the first issue that needs to be clarified is the slip surface, which determines the minimum safety factor. The slopes investigated here are homogenous with three distinct gradients (1:1.5; 1:1; 2:1), two defin...

  • Article
  • Open Access
4 Citations
1,636 Views
18 Pages

15 January 2025

Wind tunnel test results can be influenced by various factors such as the blockage ratio and scaling ratio. These factors may introduce errors in the experimental outcomes, impacting the accuracy and reliability of the data obtained. This study quant...

  • Feature Paper
  • Article
  • Open Access
46 Citations
7,576 Views
19 Pages

19 April 2018

Entropy and the second law of thermodynamics are fundamental concepts that underlie all natural processes and patterns. Recent research has shown how the entropy of a landscape mosaic can be calculated using the Boltzmann equation, with the entropy o...

  • Article
  • Open Access
23 Citations
8,460 Views
22 Pages

muMAB: A Multi-Armed Bandit Model for Wireless Network Selection

  • Stefano Boldrini,
  • Luca De Nardis,
  • Giuseppe Caso,
  • Mai T. P. Le,
  • Jocelyn Fiorina and
  • Maria-Gabriella Di Benedetto

26 January 2018

Multi-armed bandit (MAB) models are a viable approach to describe the problem of best wireless network selection by a multi-Radio Access Technology (multi-RAT) device, with the goal of maximizing the quality perceived by the final user. The classical...