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Entropy, Volume 21, Issue 11

November 2019 - 105 articles

Cover Story: We applied the measures of axiomatically proposed transfer entropy (TE) and the first principle-based information flow (IF) from information theory to detect and quantify climate interactions. As estimating TE is quite challenging, we applied various estimators of TE to idealized test cases and measured their sensitivity on sample size. We propose composite use of TE-kernel and TE-k-nearest neighbour with parameter testing in addition to TE-linear and IF-linear for linear systems. A two way realistic Indo-Pacific coupling is detected, however, an unrealistic information exchange from European air temperatures to NAO was also detected, which hints at a hidden driving process. Hence, the limitations, time series length, and the system at hand must be taken into account before drawing any conclusions from TE and IF-linear estimations. View this paper
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Articles (105)

  • Article
  • Open Access
7 Citations
5,664 Views
26 Pages

19 November 2019

β-Lactamases are enzymes produced by bacteria to hydrolyze β-lactam-based antibiotics, and pose serious threat to public health through related antibiotic resistance. Class A β-lactamases are structurally and functionally related to pe...

  • Article
  • Open Access
32 Citations
4,143 Views
21 Pages

19 November 2019

We consider measurement based single temperature quantum heat engine without feedback control, introduced recently by Yi, Talkner and Kim [Phys. Rev. E 96, 022108 (2017)]. Taking the working medium of the engine to be a one-dimensional Heisenberg mod...

  • Article
  • Open Access
19 Citations
5,271 Views
20 Pages

A Secure and Robust Image Hashing Scheme Using Gaussian Pyramids

  • Iram Bashir,
  • Fawad Ahmed,
  • Jawad Ahmad,
  • Wadii Boulila and
  • Nouf Alharbi

19 November 2019

Image hash is an alternative to cryptographic hash functions for checking integrity of digital images. Compared to cryptographic hash functions, an image hash or a Perceptual Hash Function (PHF) is resilient to content preserving distortions and sens...

  • Article
  • Open Access
17 Citations
3,531 Views
20 Pages

Solvability of the p-Adic Analogue of Navier–Stokes Equation via the Wavelet Theory

  • Ehsan Pourhadi,
  • Andrei Khrennikov,
  • Reza Saadati,
  • Klaudia Oleschko and
  • María de Jesús Correa Lopez

17 November 2019

P-adic numbers serve as the simplest ultrametric model for the tree-like structures arising in various physical and biological phenomena. Recently p-adic dynamical equations started to be applied to geophysics, to model propagation of fluids (oil, wa...

  • Article
  • Open Access
6 Citations
3,908 Views
26 Pages

Multisensor Estimation Fusion with Gaussian Process for Nonlinear Dynamic Systems

  • Yiwei Liao,
  • Jiangqiong Xie,
  • Zhiguo Wang and
  • Xiaojing Shen

16 November 2019

The Gaussian process is gaining increasing importance in different areas such as signal processing, machine learning, robotics, control and aerospace and electronic systems, since it can represent unknown system functions by posterior probability. Th...

  • Article
  • Open Access
11 Citations
5,084 Views
14 Pages

16 November 2019

Extracting structural information from sequence co-variation has become a common computational biology practice in the recent years, mainly due to the availability of large sequence alignments of protein families. However, identifying features that a...

  • Article
  • Open Access
17 Citations
5,555 Views
11 Pages

Complexity-Based Measures of Postural Sway during Walking at Different Speeds and Durations Using Multiscale Entropy

  • Ben-Yi Liau,
  • Fu-Lien Wu,
  • Chi-Wen Lung,
  • Xueyan Zhang,
  • Xiaoling Wang and
  • Yih-Kuen Jan

16 November 2019

Participation in various physical activities requires successful postural control in response to the changes in position of our body. It is important to assess postural control for early detection of falls and foot injuries. Walking at various speeds...

  • Article
  • Open Access
15 Citations
2,920 Views
16 Pages

15 November 2019

Endoreversible thermodynamics is a finite time thermodynamics ansatz based on the assumption that reversible or equilibrated subsystems of a system interact via reversible or irreversible energy transfers. This gives a framework where irreversibiliti...

  • Article
  • Open Access
3 Citations
3,772 Views
5 Pages

A Note on Graphs with Prescribed Orbit Structure

  • Abbe Mowshowitz,
  • Matthias Dehmer and
  • Frank Emmert-Streib

15 November 2019

This paper presents a proof of the existence of connected, undirected graphs with prescribed orbit structure, giving an explicit construction procedure for these graphs. Trees with prescribed orbit structure are also investigated.

  • Article
  • Open Access
9 Citations
3,585 Views
14 Pages

15 November 2019

Cascading failures are the significant cause of network breakdowns in a variety of complex infrastructure systems. Given such a system, uncovering the dependence of cascading failures on its underlying topology is essential but still not well explore...

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Entropy - ISSN 1099-4300