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Entropy, Volume 15, Issue 1

2013 January - 20 articles

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Articles (20)

  • Review
  • Open Access
15 Citations
25,461 Views
35 Pages

Is Encephalopathy a Mechanism to Renew Sulfate in Autism?

  • Stephanie Seneff,
  • Ann Lauritzen,
  • Robert M. Davidson and
  • Laurie Lentz-Marino

22 January 2013

This paper makes two claims: (1) autism can be characterized as a chronic low-grade encephalopathy, associated with excess exposure to nitric oxide, ammonia and glutamate in the central nervous system, which leads to hippocampal pathologies and resul...

(This article belongs to the Special Issue Biosemiotic Entropy: Disorder, Disease, and Mortality)
  • Article
  • Open Access
13 Citations
7,471 Views
9 Pages

22 January 2013

Recent years have witnessed an increased interest towards compression-based methods and their applications to remote sensing, as these have a data-driven and parameter-free approach and can be thus succesfully employed in several applications, especi...

(This article belongs to the Special Issue Applications of Information Theory in the Geosciences)
  • Article
  • Open Access
10 Citations
6,388 Views
11 Pages

21 January 2013

Maximum entropy method has been successfully used for underdetermined systems. Network design problem, with routing and topology subproblems, is an underdetermined system and a good candidate for maximum entropy method application. Wireless ad-hoc ne...

(This article belongs to the Special Issue Information Theory Applied to Communications and Networking)
  • Review
  • Open Access
99 Citations
20,790 Views
34 Pages

18 January 2013

Information flow, or information transfer as it may be referred to, is a fundamental notion in general physics which has wide applications in scientific disciplines. Recently, a rigorous formalism has been established with respect to both determinist...

(This article belongs to the Special Issue Transfer Entropy)
  • Article
  • Open Access
1 Citations
6,432 Views
24 Pages

17 January 2013

Process modeling by means of Gaussian-based algorithms often suffers from redundant information which usually increases the estimation computational complexity without significantly improving the estimation performance. In this article, a non-arbitra...

  • Concept Paper
  • Open Access
16 Citations
19,724 Views
28 Pages

16 January 2013

Biosemiotic entropy involves the deterioration of biological sign systems. The genome is a coded sign system that is connected to phenotypic outputs through the interpretive functions of the tRNA/ribosome machinery. This symbolic sign system (semiosi...

(This article belongs to the Special Issue Biosemiotic Entropy: Disorder, Disease, and Mortality)
  • Article
  • Open Access
16 Citations
7,723 Views
25 Pages

16 January 2013

The use of exergy to correlate energy-utilization efficiencies and energy research investments is described. Specifically, energy and exergy losses are compared with energy research and development expenditures, demonstrating that the latter correlat...

(This article belongs to the Special Issue Exergy: Analysis and Applications)
  • Article
  • Open Access
87 Citations
13,506 Views
22 Pages

11 January 2013

We present a framework for the estimation of transfer entropy (TE) under the conditions typical of physiological system analysis, featuring short multivariate time series and the presence of instantaneous causality (IC). The framework is based on rec...

(This article belongs to the Special Issue Transfer Entropy)
  • Article
  • Open Access
99 Citations
7,828 Views
14 Pages

11 January 2013

This study deals with the combined effects of convective heating and suction/injection on the entropy generation rate in a steady flow of an incompressible viscous fluid through a channel with permeable walls. The model equations for momentum and ene...

  • Article
  • Open Access
14 Citations
8,579 Views
21 Pages

10 January 2013

We present a new interpretation of a local framework for informationdynamics, including the transfer entropy, by defining a moving frame of reference for theobserver of dynamics in lattice systems. This formulation is inspired by the idea ofinvestiga...

(This article belongs to the Special Issue Transfer Entropy)
  • Review
  • Open Access
25 Citations
8,447 Views
15 Pages

9 January 2013

This short review examines recent progress in understanding dark matter, dark energy, and galactic halos using theory that departs minimally from standard particle physics and cosmology. Strict conformal symmetry (local Weyl scaling covariance), post...

(This article belongs to the Special Issue Modified Gravity: From Black Holes Entropy to Current Cosmology)
  • Article
  • Open Access
9 Citations
8,655 Views
6 Pages

8 January 2013

Introducing the notion of thermal entropy density via the first law of thermodynamics and assuming the Einstein equation as an equation of thermal state, we obtain the thermal entropy density of any arbitrary spacetime without assuming a temperature...

(This article belongs to the Special Issue Modified Gravity: From Black Holes Entropy to Current Cosmology)
  • Article
  • Open Access
75 Citations
9,201 Views
12 Pages

Numerical Study of Entropy Generation in a Flowing Nanofluid Used in Micro- and Minichannels

  • Mohammadreza Hassan,
  • Rad Sadri,
  • Goodarz Ahmadi,
  • Mahidzal B. Dahari and ,
  • Salim N. Kazi,
  • Mohammad R. Safaei and
  • Emad Sadeghinezhad
  • + 2 authors+ 0 author

7 January 2013

This article mainly concerns theoretical research on entropy generation influences due to heat transfer and flow in nanofluid suspensions. A conventional nanofluid of alumina-water (Al2O3-H2O) was considered as the fluid model. Due to the sensitivity...

  • Review
  • Open Access
108 Citations
16,091 Views
31 Pages

28 December 2012

This report reviews the conceptual and theoretical links between Granger causality and directed information theory. We begin with a short historical tour of Granger causality, concentrating on its closeness to information theory. The definitions of G...

(This article belongs to the Special Issue Transfer Entropy)
  • Review
  • Open Access
40 Citations
13,343 Views
33 Pages

27 December 2012

Mutual information (MI) is useful for detecting statistical independence between random variables, and it has been successfully applied to solving various machine learning problems. Recently, an alternative to MI called squared-loss MI (SMI) was intr...

(This article belongs to the Special Issue Estimating Information-Theoretic Quantities from Data)
  • Article
  • Open Access
5 Citations
6,278 Views
27 Pages

24 December 2012

A modified form of the Townsend equations for the fluctuating velocity wave vectors is applied to a laminar three-dimensional boundary-layer flow. These equations are cast into a Lorenz-type system of equations. The initial system of Lorenz equations...

  • Article
  • Open Access
7 Citations
6,899 Views
21 Pages

21 December 2012

In this paper, the fault detection in uncertain multivariate nonlinear non-Gaussian stochastic systems is further investigated. Entropy is introduced to characterize the stochastic behavior of the detection errors, and the entropy optimization princi...

  • Concept Paper
  • Open Access
17 Citations
12,791 Views
9 Pages

Urban Ecosystem Health Assessment and Its Application in Management: A Multi-Scale Perspective

  • Meirong Su,
  • Zhifeng Yang,
  • Bin Chen,
  • Gengyuan Liu and ,
  • Yan Zhang,
  • Lixiao Zhang,
  • Linyu Xu and
  • Yanwei Zhao
  • + 3 authors+ 0 author

20 December 2012

Urban ecosystem health assessments can be applied extensively in urban management to evaluate the status quo of the urban ecosystem, identify the limiting factors, identify key problems, optimize the scheme and guide ecological regulation. Regarding...

(This article belongs to the Special Issue Entropy and Urban Sprawl)
  • Article
  • Open Access
10 Citations
7,796 Views
22 Pages

Quantitative Analysis of Dynamic Behaviours of Rural Areas at Provincial Level Using Public Data of Gross Domestic Product

  • Yi Chen,
  • Guangfeng Zhang,
  • Yiyang Li,
  • Yi Ding and ,
  • Bin Zheng and
  • Qiang Miao
  • + 1 author+ 0 author

20 December 2012

A spatial approach that incorporates three economic components and one environmental factor has been developed to evaluate the dynamic behaviours of the rural areas at a provincial level. An artificial fish swarm algorithm with variable population si...

(This article belongs to the Special Issue Entropy and Urban Sprawl)
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Entropy - ISSN 1099-4300