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Symmetry, Volume 11, Issue 4

April 2019 - 156 articles

Cover Story: The symmetry of molecular arrangement was used in recognition of supramolecular synthons, with topological similarities of crystal structures allowed to identify a supramolecular polymer with contacts above the semi-coordination distance limit. Stabilizing cooperation and destabilizing competition between coordination and hydrogen bonds were observed. View this paper.
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Articles (156)

  • Article
  • Open Access
74 Citations
6,276 Views
17 Pages

Fractional-Order Fusion Model for Low-Light Image Enhancement

  • Qiang Dai,
  • Yi-Fei Pu,
  • Ziaur Rahman and
  • Muhammad Aamir

19 April 2019

In this paper, a novel fractional-order fusion model (FFM) is presented for low-light image enhancement. Existing image enhancement methods don’t adequately extract contents from low-light areas, suppress noise, and preserve naturalness. To sol...

  • Article
  • Open Access
60 Citations
3,879 Views
12 Pages

19 April 2019

In this article, the ( G ′ / G ) -expansion method is used for the analytical solutions of fractional-order Klein-Gordon and Gas Dynamics equations. The fractional derivatives are defined in the term of Jumarie’s operator. The...

  • Review
  • Open Access
10 Citations
5,725 Views
14 Pages

18 April 2019

Natural and nonnatural amino acids represent important building blocks for the development of peptidomimetic scaffolds, especially for targeting proteolytic enzymes and for addressing protein–protein interactions. Among all the different amino...

  • Article
  • Open Access
2 Citations
4,223 Views
14 Pages

18 April 2019

In the course of basketball training, a large number of basketball action data are generated according to the athletes’ body movements. Due to the low precision of the basketball action data processed by the traditional method in basketball tec...

  • Article
  • Open Access
8 Citations
3,665 Views
18 Pages

Boosting Memory-Based Collaborative Filtering Using Content-Metadata

  • Kyung Soo Kim,
  • Doo Soo Chang and
  • Yong Suk Choi

18 April 2019

Recommendation systems are widely used in conjunction with many popular personalized services, which enables people to find not only content items they are currently interested in, but also those in which they might become interested. Many recommenda...

  • Feature Paper
  • Article
  • Open Access
16 Citations
4,177 Views
22 Pages

18 April 2019

In this review, we present of an overview of several interesting properties of QCD at finite imaginary chemical potential and those applications to exploring the QCD phase diagram. The most important properties of QCD at a finite imaginary chemical p...

  • Article
  • Open Access
6 Citations
4,730 Views
18 Pages

Power-Law Distribution of Natural Visibility Graphs from Reaction Times Series

  • Ainara Mira-Iglesias,
  • Esperanza Navarro-Pardo and
  • J. Alberto Conejero

18 April 2019

In this study, we analyze the response times of students to yes/no decision tasks from the perspective of network science. We analyze the properties of the natural visibility graphs (NVG) associated with their reaction time series. We observe that th...

  • Feature Paper
  • Article
  • Open Access
8 Citations
3,899 Views
20 Pages

Calculating Hausdorff Dimension in Higher Dimensional Spaces

  • Manuel Fernández-Martínez,
  • Juan Luis García Guirao and
  • Miguel Ángel Sánchez-Granero

18 April 2019

In this paper, we prove the identity dim H ( F ) = d · dim H ( α − 1 ( F ) ) , where dim H denotes Hausdorff dimension, F ⊆ R d , and α : [ 0 , 1 ] → [ 0 , 1 ]...

  • Article
  • Open Access
29 Citations
7,299 Views
21 Pages

18 April 2019

Supply Chain Management (SCM) represents an example of a complex multi-stage system. The SCM involves and connects different activities, from customer’s orders to received services, all with the aim of satisfying customers. The evaluation of a...

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Symmetry - ISSN 2073-8994