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Symmetry, Volume 11, Issue 5

May 2019 - 128 articles

Cover Story: We derive a scalar junction condition and a generalized Lanczos equation across lightlike shock waves in cosmologically viable scalar–tensor gravity theories. The first constrains the energy density, current, and pressure of the shock wave, while the second relates them to the jumps in the geometry and transverse derivative of the scalar. We thank Cecília Gergely for contributing the cover figure. View this paper.
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Articles (128)

  • Article
  • Open Access
19 Citations
2,669 Views
9 Pages

A Hybrid Contraction that Involves Jaggi Type

  • Erdal Karapınar and
  • Andreea Fulga

27 May 2019

In this manuscript, we aim to provide a new hybrid type contraction that is a combination of a Jaggi type contraction and interpolative type contraction in the framework of complete metric spaces. We investigate the existence and uniqueness of such a...

  • Article
  • Open Access
37 Citations
5,349 Views
24 Pages

27 May 2019

Multilevel thresholding is a very active research field in image segmentation, and has been successfully used in various applications. However, the computational time will increase exponentially as the number of thresholds increases, and for color im...

  • Article
  • Open Access
12 Citations
4,406 Views
16 Pages

A Novel Hybrid Artificial Intelligence Based Methodology for the Inventory Routing Problem

  • Aslı Boru,
  • Ayşe Tuğba Dosdoğru,
  • Mustafa Göçken and
  • Rızvan Erol

27 May 2019

In this paper, a new hybrid method including simulation optimization and artificial intelligence based simulation is created to solve the inventory routing problem (IRP) in which three different routing strategies are evaluated for uneven demand patt...

  • Article
  • Open Access
16 Citations
3,264 Views
13 Pages

A Power Control Algorithm Based on Chicken Game Theory in Multi-Hop Networks

  • Jinpeng Wang,
  • Ye Zhengpeng,
  • Jeremy Gillbanks,
  • Tarun M. Sanders and
  • Nianyu Zou

27 May 2019

With the development of modern society, there are not only many voice calls being made over wireless communication systems, but there is also a great deal of demand for data services. There are increasing demands from the general public for more info...

  • Article
  • Open Access
74 Citations
4,268 Views
14 Pages

Geometric Properties of Certain Classes of Analytic Functions Associated with a q-Integral Operator

  • Shahid Mahmood,
  • Nusrat Raza,
  • Eman S. A. AbuJarad,
  • Gautam Srivastava,
  • H. M. Srivastava and
  • Sarfraz Nawaz Malik

27 May 2019

This article presents certain families of analytic functions regarding q-starlikeness and q-convexity of complex order γ ( γ ∈ C \ 0 ) . This introduced a q-integral operator and certain subclasses of the newly introduced c...

  • Article
  • Open Access
6 Citations
4,195 Views
19 Pages

An Integrated Model for Demand Forecasting and Train Stop Planning for High-Speed Rail

  • Guowei Jin,
  • Shiwei He,
  • Jiabin Li,
  • Yubin Li,
  • Xiaole Guo and
  • Hongfei Xu

27 May 2019

Studying the interaction between demand forecasting and train stop planning is important, as it ensures the sustainable development of high-speed rail (HSR). Forecasting the demand for high-speed rail (HSR), which refers to modal choice or modal spli...

  • Article
  • Open Access
1 Citations
2,986 Views
13 Pages

27 May 2019

A Chebyshev pseudospectral–two-step three-order boundary value coupled method is proposed and presented for handling the issue associated with complicated calculation, low precision, and poor stability in the process of transient response of tr...

  • Article
  • Open Access
12 Citations
3,111 Views
21 Pages

27 May 2019

The purpose of this paper is to introduce a new algorithm to approximate a common solution for a system of generalized mixed equilibrium problems, split variational inclusion problems of a countable family of multivalued maximal monotone operators, a...

  • Feature Paper
  • Article
  • Open Access
21 Citations
3,290 Views
13 Pages

Infrared Dim Target Detection Using Shearlet’s Kurtosis Maximization under Non-Uniform Background

  • Lingbing Peng,
  • Tianfang Zhang,
  • Yuhan Liu,
  • Meihui Li and
  • Zhenming Peng

27 May 2019

A novel method based on multiscale and multidirectional feature fusion in the shearlet transform domain and kurtosis maximization for detecting the dim target in infrared images with a low signal-to-noise ratio (SNR) and serious interference caused b...

  • Article
  • Open Access
4 Citations
2,743 Views
12 Pages

On r-Central Incomplete and Complete Bell Polynomials

  • Dae San Kim,
  • Han Young Kim,
  • Dojin Kim and
  • Taekyun Kim

27 May 2019

Here we would like to introduce the extended r-central incomplete and complete Bell polynomials, as multivariate versions of the recently studied extended r-central factorial numbers of the second kind and the extended r-central Bell polynomials, and...

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Symmetry - ISSN 2073-8994Creative Common CC BY license