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Symmetry, Volume 9, Issue 9

September 2017 - 30 articles

Cover Story: We discuss groups formed by spatial point symmetry operations in combination with time translations, i.e., spatio-temporal symmetries, and outline some of their possible applications. The figure shows the orbit of an electron in k-space under the influence of a magnetic field (denoted by H), within the semi-classical theory of electron dynamics. The yellow surface represents a constant energy surface in k-space. The spatial operation and time translation, which together form a spatio-temporal symmetry of the trajectory of the electron, are shown with red and blue arrows respectively. View this paper
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Articles (30)

  • Article
  • Open Access
19 Citations
8,945 Views
15 Pages

19 September 2017

Anomaly detection systems, also known as intrusion detection systems (IDSs), continuously monitor network traffic aiming to identify malicious actions. Extensive research has been conducted to build efficient IDSs emphasizing two essential characteri...

  • Review
  • Open Access
49 Citations
9,751 Views
29 Pages

Chiral Analysis of Pesticides and Drugs of Environmental Concern: Biodegradation and Enantiomeric Fraction

  • Alexandra S. Maia,
  • Ana R. Ribeiro,
  • Paula M. L. Castro and
  • Maria Elizabeth Tiritan

16 September 2017

The importance of stereochemistry for medicinal chemistry and pharmacology is well recognized and the dissimilar behavior of enantiomers is fully documented. Regarding the environment, the significance is equivalent since enantiomers of chiral organi...

  • Article
  • Open Access
5 Citations
7,543 Views
25 Pages

15 September 2017

This paper demonstrates the relationship between the production process of a knot and manipulation skills. First, we define the description (rope intersections, grasp type and fixation positions) of a knot. Second, we clarify the characteristics of t...

  • Article
  • Open Access
59 Citations
8,365 Views
16 Pages

M2M Security Technology of CPS Based on Blockchains

  • Shiyong Yin,
  • Jinsong Bao,
  • Yiming Zhang and
  • Xiaodi Huang

14 September 2017

As the core of intelligent manufacturing, cyber-physical systems (CPS) have serious security issues, especially for the communication security of their terminal machine-to-machine (M2M) communications. In this paper, blockchain technology is introduc...

  • Article
  • Open Access
8 Citations
5,594 Views
10 Pages

13 September 2017

Big data research on genomic sequence analysis has accelerated considerably with the development of next-generation sequencing. Currently, research on genomic sequencing has been conducted using various methods, ranging from the assembly of reads con...

  • Article
  • Open Access
17 Citations
5,067 Views
16 Pages

11 September 2017

The daily fluctuation trends of a stock market are illustrated by three statuses: up, equal, and down. These can be represented by a neutrosophic set which consists of three functions—truth-membership, indeterminacy-membership, and falsity-membership...

  • Feature Paper
  • Article
  • Open Access
10 Citations
7,239 Views
13 Pages

On the Form and Growth of Complex Crystals: The Case of Tsai-Type Clusters

  • Jean E. Taylor,
  • Erin G. Teich,
  • Pablo F. Damasceno,
  • Yoav Kallus and
  • Marjorie Senechal

11 September 2017

Where are the atoms in complex crystals such as quasicrystals or periodic crystals with one hundred or more atoms per unit cell? How did they get there? The first of these questions has been gradually answered for many materials over the quarter-cent...

  • Feature Paper
  • Review
  • Open Access
33 Citations
7,778 Views
28 Pages

Chiral Stationary Phases for Liquid Chromatography Based on Chitin- and Chitosan-Derived Marine Polysaccharides

  • João Ribeiro,
  • Maria Elizabeth Tiritan,
  • Madalena M.M. Pinto and
  • Carla Fernandes

11 September 2017

The development of chiral stationary phases (CSPs) for liquid chromatography (LC) revolutionized the enantioseparation and, nowadays, different types of CSPs are commercially available. Polysaccharide-based CSPs are one of the most versatile and wide...

  • Article
  • Open Access
29 Citations
8,589 Views
22 Pages

11 September 2017

This research proposes a gaze pointer-based user interface to provide user-oriented interaction suitable for the virtual reality environment on mobile platforms. For this purpose, a mobile platform-based three-dimensional interactive content is produ...

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Symmetry - ISSN 2073-8994Creative Common CC BY license