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Symmetry, Volume 9, Issue 7

July 2017 - 31 articles

Cover Story: In this study, we considered incomplete parity and time reversal transformations. Appropriately chosen as quantum operators, they can be applied to a many spinless-particle system, interacting with a constant magnetic field. Contrary to the traditional approach, time correlation functions can be defined without the need to reverse the magnetic field. A form of time translational symmetry emerges, which is inherited from invariance of the Hamiltonian during this peculiar time reversal transformation. We thank Gabriel Joffe for contributing the cover figure. View the paper
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Articles (31)

  • Article
  • Open Access
10 Citations
5,584 Views
12 Pages

IoT-Based Image Recognition System for Smart Home-Delivered Meal Services

  • Hsiao-Ting Tseng,
  • Hsin-Ginn Hwang,
  • Wei-Yen Hsu,
  • Pei-Chin Chou and
  • I-Chiu Chang

21 July 2017

Population ageing is an important global issue. The Taiwanese government has used various Internet of Things (IoT) applications in the “10-year long-term care program 2.0”. It is expected that the efficiency and effectiveness of long-term care servic...

  • Article
  • Open Access
20 Citations
5,605 Views
20 Pages

21 July 2017

As a significant business activity, merger and acquisition (M&A) generally means transactions in which the ownership of companies, other business organizations or their operating units are transferred or combined. In a typical M&A procedure,...

  • Article
  • Open Access
13 Citations
6,235 Views
15 Pages

21 July 2017

Most existing fuzzy forecasting models partition historical training time series into fuzzy time series and build fuzzy-trend logical relationship groups to generate forecasting rules. The determination process of intervals is complex and uncertain....

  • Article
  • Open Access
191 Citations
6,224 Views
7 Pages

20 July 2017

In nature, the mechanical properties of geological bodies are very complex, and their various mechanical parameters are vague, incomplete, imprecise, and indeterminate. However, we cannot express them by the crisp values in classical probability and...

  • Article
  • Open Access
15 Citations
6,487 Views
18 Pages

18 July 2017

In this paper, new construction methods of entanglement-assisted quantum error correction code (EAQECC) from circulant matrices are proposed. We first construct the matrices from two vectors of constraint size, and determine the isotropic subgroup. T...

  • Feature Paper
  • Article
  • Open Access
5 Citations
3,646 Views
7 Pages

18 July 2017

We derive the quantum analogues of some recently discovered symmetry relations for time correlation functions in systems subject to a constant magnetic field. The symmetry relations deal with the effect of time reversal and do not require—as in the f...

  • Article
  • Open Access
62 Citations
5,118 Views
10 Pages

18 July 2017

The neutrosophic cubic set can contain much more information to express its interval neutrosophic numbers and single-valued neutrosophic numbers simultaneously in indeterminate environments. Hence, it is a usual tool for expressing much more informat...

  • Article
  • Open Access
17 Citations
4,485 Views
19 Pages

17 July 2017

In this paper, we extend the rough set model on two different universes in intuitionistic fuzzy approximation spaces to a single-valued neutrosophic environment. Firstly, based on the ( α , β , γ ) -cut relation R ˜ { ( α , β , γ ) }...

  • Article
  • Open Access
5 Citations
7,955 Views
14 Pages

Modeling the 0-1 Knapsack Problem in Cargo Flow Adjustment

  • Boliang Lin,
  • Siqi Liu,
  • Ruixi Lin,
  • Jianping Wu,
  • Jiaxi Wang and
  • Chang Liu

14 July 2017

China’s railway network is one of the largest railway networks in the world. By the end of 2016, the total length of railway in operation reached 124,000 km and the annual freight volume exceeded 3.3 billion tons. However, the structure of network do...

  • Article
  • Open Access
28 Citations
9,984 Views
15 Pages

Model to Implement Virtual Computing Labs via Cloud Computing Services

  • Washington Luna Encalada and
  • José Luis Castillo Sequera

13 July 2017

In recent years, we have seen a significant number of new technological ideas appearing in literature discussing the future of education. For example, E-learning, cloud computing, social networking, virtual laboratories, virtual realities, virtual wo...

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Symmetry - ISSN 2073-8994