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Entropy, Volume 17, Issue 5

2015 May - 49 articles

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Articles (49)

  • Article
  • Open Access
53 Citations
10,766 Views
17 Pages

Information Decomposition and Synergy

  • Eckehard Olbrich,
  • Nils Bertschinger and
  • Johannes Rauh

22 May 2015

Recently, a series of papers addressed the problem of decomposing the information of two random variables into shared information, unique information and synergistic information. Several measures were proposed, although still no consensus has been re...

  • Article
  • Open Access
50 Citations
7,210 Views
18 Pages

Nonparametric Denoising Methods Based on Contourlet Transform with Sharp Frequency Localization: Application to Low Exposure Time Electron Microscopy Images

  • Soumia Sid Ahmed,
  • Zoubeida Messali,
  • Abdeldjalil Ouahabi,
  • Sylvain Trepout,
  • Cedric Messaoudi and
  • Sergio Marco

20 May 2015

Image denoising is a very important step in cryo-transmission electron microscopy (cryo-TEM) and the energy filtering TEM images before the 3D tomography reconstruction, as it addresses the problem of high noise in these images, that leads to a loss...

  • Article
  • Open Access
1 Citations
6,138 Views
22 Pages

20 May 2015

Classical reliability assessment methods have predominantly focused on probability and statistical theories, which are insufficient in assessing the operational reliability of individual mechanical equipment with time-varying characteristics. A new a...

  • Article
  • Open Access
5 Citations
4,950 Views
19 Pages

18 May 2015

In this paper, we investigate a lossy source coding problem, where an upper limit on the permitted distortion is defined for every dataset element. It can be seen as an alternative approach to rate distortion theory where a bound on the allowed avera...

  • Article
  • Open Access
28 Citations
6,253 Views
19 Pages

Minimum Error Entropy Algorithms with Sparsity Penalty Constraints

  • Zongze Wu,
  • Siyuan Peng,
  • Wentao Ma,
  • Badong Chen and
  • Jose C. Principe

18 May 2015

Recently, sparse adaptive learning algorithms have been developed to exploit system sparsity as well as to mitigate various noise disturbances in many applications. In particular, in sparse channel estimation, the parameter vector with sparsity chara...

  • Article
  • Open Access
91 Citations
14,426 Views
20 Pages

Heat Transfer and Pressure Drop Characteristics in Straight Microchannel of Printed Circuit Heat Exchangers

  • Jang-Won Seo,
  • Yoon-Ho Kim,
  • Dongseon Kim,
  • Young-Don Choi and
  • Kyu-Jung Lee

18 May 2015

Performance tests were carried out for a microchannel printed circuit heat exchanger (PCHE), which was fabricated with micro photo-etching and diffusion bonding technologies. The microchannel PCHE was tested for Reynolds numbers in the range of 100‒...

  • Article
  • Open Access
47 Citations
10,231 Views
24 Pages

15 May 2015

In this paper, we present connections between recent developments on the linearly-solvable stochastic optimal control framework with early work in control theory based on the fundamental dualities between free energy and relative entropy. We extend t...

  • Article
  • Open Access
4 Citations
5,813 Views
24 Pages

15 May 2015

We present a theoretical study of new families of stochastic complex information modules encoded in the hypergraph states which are defined by the fractional entropic descriptor. The essential connection between the Lyapunov exponents and d-regular h...

  • Article
  • Open Access
23 Citations
6,403 Views
13 Pages

14 May 2015

In this paper, we define the portfolio return as fuzzy average yield and risk as hybrid-entropy and variance to deal with the portfolio selection problem with both random uncertainty and fuzzy uncertainty, and propose a mean-variance hybrid-entropy m...

  • Feature Paper
  • Article
  • Open Access
5 Citations
8,370 Views
20 Pages

14 May 2015

An information-theoretic perspective on coarse-graining is presented. It starts with an information characterization of configurations at the micro-level using a local information quantity that has a spatial average equal to a microscopic entropy. Wi...

  • Review
  • Open Access
6 Citations
6,659 Views
8 Pages

Continuous-Variable Entanglement Swapping

  • Kevin Marshall and
  • Christian Weedbrook

13 May 2015

We present a very brief overview of entanglement swapping as it relates to continuous-variable quantum information. The technical background required is discussed and the natural link to quantum teleportation is established before discussing the natu...

  • Article
  • Open Access
3 Citations
4,860 Views
12 Pages

Effect of Heterogeneity in Initial Geographic Distribution on Opinions’ Competitiveness

  • Alexander S. Balankin,
  • Miguel Ángel Martínez Cruz,
  • Felipe Gayosso Martínez,
  • Claudia L. Martínez-González,
  • Leobardo Morales Ruiz and
  • Julián Patiño Ortiz

13 May 2015

Spin dynamics on networks allows us to understand how a global consensus emerges out of individual opinions. Here, we are interested in the effect of heterogeneity in the initial geographic distribution of a competing opinion on the competitiveness o...

  • Article
  • Open Access
37 Citations
5,445 Views
10 Pages

13 May 2015

In this study, we introduce conditions for the existence of solutions for an iterative functional differential equation of fractional order. We prove that the solutions of the above class of fractional differential equations are bounded by Tsallis en...

  • Article
  • Open Access
10 Citations
5,647 Views
12 Pages

13 May 2015

In this paper, the exp-function method is improved to construct exact solutions of non-linear lattice equations by modifying its exponential function ansätz. The improved method has two advantages. One is that it can solve non-linear lattice equation...

  • Article
  • Open Access
11 Citations
6,524 Views
11 Pages

13 May 2015

Quantum cryptography allows for unconditionally secure communication against an eavesdropper endowed with unlimited computational power and perfect technologies, who is only constrained by the laws of physics. We review recent results showing that, u...

  • Review
  • Open Access
300 Citations
18,634 Views
14 Pages

12 May 2015

Multiscale entropy (MSE) analysis was introduced in the 2002 to evaluate the complexity of a time series by quantifying its entropy over a range of temporal scales. The algorithm has been successfully applied in different research fields. Since its i...

  • Article
  • Open Access
2 Citations
6,160 Views
28 Pages

12 May 2015

Energy and exergy characteristics of a square cylinder (SC) in confined flow are investigated computationally by numerically handling the steady-state continuity, Navier-Stokes and energy equations in the Reynolds number range of Re = 10–50, where t...

  • Communication
  • Open Access
5 Citations
5,540 Views
18 Pages

11 May 2015

Physical models and grey system models (GSMs) are commonly used to evaluate and predict physical behavior. A physical model avoids the incorrect trend series of a GSM, whereas a GSM avoids the assumptions and uncertainty of a physical model. A techn...

  • Article
  • Open Access
47 Citations
9,579 Views
44 Pages

Predicting Community Evolution in Social Networks

  • Stanisław Saganowski,
  • Bogdan Gliwa,
  • Piotr Bródka,
  • Anna Zygmunt,
  • Przemysław Kazienko and
  • Jarosław Koźlak

11 May 2015

Nowadays, sustained development of different social media can be observed worldwide. One of the relevant research domains intensively explored recently is analysis of social communities existing in social media as well as prediction of their future e...

  • Article
  • Open Access
20 Citations
6,012 Views
13 Pages

11 May 2015

This paper studies the problem of exponential outer synchronization between two uncertain nonlinearly coupled complex networks with time delays. In order to synchronize uncertain complex networks, an adaptive control scheme is designed based on the L...

  • Article
  • Open Access
7 Citations
5,787 Views
15 Pages

8 May 2015

Safety control of concrete dams is required due to the potential great loss of life and property in case of dam failure. The purpose of this paper is to feed back the operational control loads for concrete dam displacement using the maximum entropy m...

  • Article
  • Open Access
14 Citations
6,477 Views
15 Pages

Kolmogorov Complexity Based Information Measures Applied to the Analysis of Different River Flow Regimes

  • Dragutin T. Mihailović,
  • Gordan Mimić,
  • Nusret Drešković and
  • Ilija Arsenić

8 May 2015

We have used the Kolmogorov complexities and the Kolmogorov complexity spectrum to quantify the randomness degree in river flow time series of seven rivers with different regimes in Bosnia and Herzegovina, representing their different type of cours...

  • Review
  • Open Access
52 Citations
11,251 Views
47 Pages

8 May 2015

This work reviews and extends a family of log-determinant (log-det) divergences for symmetric positive definite (SPD) matrices and discusses their fundamental properties. We show how to use parameterized Alpha-Beta (AB) and Gamma log-det divergences...

  • Article
  • Open Access
17 Citations
9,756 Views
24 Pages

7 May 2015

In performing their biological functions, molecular machines must process and transmit information with high fidelity. Information transmission requires dynamic coupling between the conformations of discrete structural components within the protein p...

  • Article
  • Open Access
8 Citations
6,989 Views
13 Pages

7 May 2015

Information security is increasingly important as society migrates to the information age. Classical cryptography widely used nowadays is based on computational complexity, which means that it assumes that solving some particular mathematical problem...

  • Article
  • Open Access
55 Citations
10,876 Views
26 Pages

Oxygen Saturation and RR Intervals Feature Selection for Sleep Apnea Detection

  • Antonio G. Ravelo-García,
  • Jan F. Kraemer,
  • Juan L. Navarro-Mesa,
  • Eduardo Hernández-Pérez,
  • Javier Navarro-Esteva,
  • Gabriel Juliá-Serdá,
  • Thomas Penzel and
  • Niels Wessel

7 May 2015

A diagnostic system for sleep apnea based on oxygen saturation and RR intervals obtained from the EKG (electrocardiogram) is proposed with the goal to detect and quantify minute long segments of sleep with breathing pauses. We measured the discrimina...

  • Article
  • Open Access
101 Citations
6,363 Views
14 Pages

6 May 2015

We investigate the superconducting lifetime of a long overdamped current-biased Josephson junction, in the presence of telegraph noise sources. The analysis is performed by randomly choosing the initial condition for the noise source. However, in ord...

  • Review
  • Open Access
37 Citations
5,845 Views
19 Pages

6 May 2015

We consider the probability distributions, spin (qudit)-state tomograms and density matrices of quantum states, and their information characteristics, such as Shannon and von Neumann entropies and q-entropies, from the viewpoints of both well-known p...

  • Article
  • Open Access
19 Citations
5,789 Views
9 Pages

5 May 2015

It is by now well known that the Boltzmann-Gibbs-von Neumann-Shannon logarithmic entropic functional (\(S_{BG}\)) is inadequate for wide classes of strongly correlated systems: see for instance the 2001 Brukner and Zeilinger's {\it Conceptual inadequ...

  • Article
  • Open Access
18 Citations
6,410 Views
31 Pages

The Grading Entropy-based Criteria for Structural Stability of Granular Materials and Filters

  • Janos Lőrincz,
  • Emöke Imre,
  • Stephen Fityus,
  • Phong Q. Trang,
  • Tibor Tarnai,
  • István Talata and
  • Vijay P. Singh

4 May 2015

This paper deals with three grading entropy-based rules that describe different soil structure stability phenomena: an internal stability rule, a filtering rule and a segregation rule. These rules are elaborated on the basis of a large amount of labo...

  • Article
  • Open Access
14 Citations
5,989 Views
22 Pages

4 May 2015

We explore two possible generalizations of the Euler formula for the complex \(\kappa\)-exponential, which give two different sets of \(\kappa\)-deformed cyclic functions endowed with different analytical properties. In a case, the \(\kappa\)-sine an...

  • Article
  • Open Access
6 Citations
7,159 Views
19 Pages

4 May 2015

Staff turnover in a software project is a significant risk that can result in project failure. Despite the urgency of this issue, however, relevant studies are limited and are mostly qualitative; quantitative studies are extremely rare. This paper pr...

  • Article
  • Open Access
10 Citations
5,431 Views
18 Pages

Finite Key Size Analysis of Two-Way Quantum Cryptography

  • Jesni Shamsul Shaari and
  • Stefano Mancini

30 April 2015

Quantum cryptographic protocols solve the longstanding problem of distributing a shared secret string to two distant users by typically making use of one-way quantum channel. However, alternative protocols exploiting two-way quantum channel have been...

  • Article
  • Open Access
17 Citations
5,832 Views
8 Pages

30 April 2015

CaMoO4 nanocakes with uniform size and morphology were prepared on a large scale via a room temperature reverse-microemulsion method. The products were characterized in detail by X-ray powder diffraction, field-emission scanning electron microscopy,...

  • Article
  • Open Access
1 Citations
5,496 Views
15 Pages

30 April 2015

Ground-level ozone concentration is a key indicator of air quality. Theremay exist sudden changes in ozone concentration data over a long time horizon, which may be caused by the implementation of government regulations and policies, such as establis...

  • Article
  • Open Access
55 Citations
6,602 Views
17 Pages

Estimating the Lower Limit of the Impact of Amines on Nucleation in the Earth’s Atmosphere

  • Alexey B. Nadykto,
  • Jason Herb,
  • Fangqun Yu,
  • Yisheng Xu and
  • Ekaterina S. Nazarenko

30 April 2015

Amines, organic derivatives of NH3, are important common trace atmospheric species that can enhance new particle formation in the Earth’s atmosphere under favorable conditions. While methylamine (MA), dimethylamine (DMA) and trimethylamine (TMA) all...

  • Article
  • Open Access
2 Citations
4,231 Views
17 Pages

Identifying the Most Relevant Lag with Runs

  • Úrsula Faura,
  • Matilde Lafuente,
  • Mariano Matilla-García and
  • Manuel Ruiz

28 April 2015

In this paper, we propose a nonparametric statistical tool to identify the most relevant lag in the model description of a time series. It is also shown that it can be used for model identification. The statistic is based on the number of runs, when...

  • Article
  • Open Access
3 Citations
4,478 Views
22 Pages

27 April 2015

In this paper, the stabilization problem in switched linear systems with time-varying delay under constrained state and control is investigated. The synthesis of bounded state-feedback controllers with memory ensures that a closed-loop state is posit...

  • Article
  • Open Access
10 Citations
6,083 Views
11 Pages

27 April 2015

A projective synchronization scheme for a kind of n-dimensional discrete dynamical system is proposed by means of a linear feedback control technique. The scheme consists of master and slave discrete dynamical systems coupled by linear state error va...

  • Article
  • Open Access
24 Citations
6,926 Views
18 Pages

A Fuzzy Logic-Based Approach for Estimation of Dwelling Times of Panama Metro Stations

  • Aranzazu Berbey Alvarez,
  • Fernando Merchan,
  • Francisco Javier Calvo Poyo and
  • Rony Javier Caballero George

27 April 2015

Passenger flow modeling and station dwelling time estimation are significant elements for railway mass transit planning, but system operators usually have limited information to model the passenger flow. In this paper, an artificial-intelligence tech...

  • Article
  • Open Access
3 Citations
4,239 Views
13 Pages

Stochastic Processes via the Pathway Model

  • Arak M. Mathai and
  • Hans J. Haubold

24 April 2015

After collecting data from observations or experiments, the next step is to analyze the data to build an appropriate mathematical or stochastic model to describe the data so that further studies can be done with the help of the model. In this article...

  • Article
  • Open Access
17 Citations
6,448 Views
18 Pages

24 April 2015

Because of the importance of damage detection in manufacturing systems and other areas, many fault detection methods have been developed that are based on a vibration signal. Little work, however, has been reported in the literature on using a recurr...

  • Article
  • Open Access
24 Citations
6,637 Views
17 Pages

23 April 2015

An accelerated degradation test (ADT) is regarded as an effective alternative to an accelerated life test in the sense that an ADT can provide more accurate information on product reliability, even when few or no failures may be expected before the e...

  • Article
  • Open Access
2 Citations
4,682 Views
17 Pages

23 April 2015

A systematic method of transferring information from coarser to finer resolution based on renormalization group (RG) transformations is introduced. It permits building informative priors in finer scales from posteriors in coarser scales since, under...

  • Article
  • Open Access
10 Citations
5,070 Views
16 Pages

23 April 2015

A financial time series agent-based model is reproduced and investigated by the statistical physics system, the finite-range interacting voter system. The voter system originally describes the collective behavior of voters who constantly update their...

  • Article
  • Open Access
3 Citations
5,823 Views
18 Pages

Uncovering Discrete Non-Linear Dependence with Information Theory

  • Anton Golub,
  • Gregor Chliamovitch,
  • Alexandre Dupuis and
  • Bastien Chopard

23 April 2015

In this paper, we model discrete time series as discrete Markov processes of arbitrary order and derive the approximate distribution of the Kullback-Leibler divergence between a known transition probability matrix and its sample estimate. We introduc...

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Entropy - ISSN 1099-4300