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Symmetry, Volume 9, Issue 12

December 2017 - 36 articles

Cover Story: The theory of knotoids can be regarded as a refinement of classical knot theory. Knotoids provide a natural topological domain for studying the knotting of physical structures involving open-ended curves, for example, polymers. In analogy, braidoids extend the classical braids and they form a counterpart theory to the theory of knotoids. Any braidoid gives rise to a knotoid via the closure map and any knotoid can be turned into a braidoid whose closure is topologically equivalent to the starting knotoid. Braidoids can be used for encoding the topological information of knotoids in terms of algebraic expressions. View this paper
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Articles (36)

  • Article
  • Open Access
13 Citations
16,012 Views
12 Pages

A Novel Framework for Assessing Facial Attractiveness Based on Facial Proportions

  • Yu-Jin Hong,
  • Gi Pyo Nam,
  • Heeseung Choi,
  • Junghyun Cho and
  • Ig-Jae Kim

29 November 2017

In this paper, we present a novel framework for automatically assessing facial attractiveness that considers four ratio feature sets as objective elements of facial attractiveness. In our framework, these feature sets are combined with three regressi...

  • Article
  • Open Access
18 Citations
7,338 Views
10 Pages

System Framework for Cardiovascular Disease Prediction Based on Big Data Technology

  • Sang Hun Han,
  • Kyoung Ok Kim,
  • Eun Jong Cha,
  • Kyung Ah Kim and
  • Ho Sun Shon

27 November 2017

Amid growing concern over the changing climate, environment, and health care, the interconnectivity between cardiovascular diseases, coupled with rapid industrialization, and a variety of environmental factors, has been the focus of recent research....

  • Article
  • Open Access
1 Citations
4,227 Views
18 Pages

26 November 2017

This paper proposes a method whereby a device can transmit and receive information using a beacon, and also describes application scenarios for the proposed method. In a multi-device to multi-device (MD2MD) content-centric networking (CCN) environmen...

  • Article
  • Open Access
4 Citations
4,026 Views
11 Pages

Aging Detection of Electrical Point Machines Based on Support Vector Data Description

  • Jaewon Sa,
  • Younchang Choi,
  • Yongwha Chung,
  • Jonguk Lee and
  • Daihee Park

24 November 2017

Electrical point machines (EPM) must be replaced at an appropriate time to prevent the occurrence of operational safety or stability problems in trains resulting from aging or budget constraints. However, it is difficult to replace EPMs effectively b...

  • Article
  • Open Access
41 Citations
4,127 Views
19 Pages

23 November 2017

Hesitant fuzzy linguistic decision making is a focus point in linguistic decision making, in which the main method is based on preference ordering. This paper develops a new hesitant fuzzy linguistic TOPSIS method for group multi-criteria linguistic...

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Symmetry - ISSN 2073-8994