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Symmetry, Volume 13, Issue 10

October 2021 - 217 articles

Cover Story: Fullerene C60 can form bulky oligomeric molecules (C60)n. Their quantum-chemical description is challenging, so other theoretical approaches complement their digital portrait. We have studied the energy, topology, and symmetry of (C60)n combining density functional theory computations with topological indices and information entropy. The topological indices relate to the reactivities of the atoms, whereas information entropy is indicative in the aspect of the odd–even symmetry oscillations with n. Our findings allow predicting important properties of (C60)n with large n without heavy artillery of quantum chemistry. View this paper
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Articles (217)

  • Review
  • Open Access
1 Citations
1,917 Views
17 Pages

19 October 2021

The pulsed laser deposition process is a complex one, encompassing a wide range of physical phenomena that act at different time scales, ranging from laser absorption to melting, plasma formation, and thin film deposition. In the past 15 years, there...

  • Article
  • Open Access
11 Citations
2,787 Views
14 Pages

Matching of Manufacturing Resources in Cloud Manufacturing Environment

  • Yanjuan Hu,
  • Leiting Pan,
  • Dongwei Gu,
  • Zhanli Wang,
  • Hongliang Liu and
  • Yilin Wang

19 October 2021

With the introduction and application of new information technology in manufacturing, various advanced manufacturing models and national strategies have received more and more attention. The goal of cloud manufacturing is to closely link the resource...

  • Article
  • Open Access
7 Citations
3,373 Views
12 Pages

19 October 2021

A novel computational method to evaluate the Sommerfeld integral (SI) efficiently and accurately is presented. The method rewrites the SI into two parts, applying discrete complex image method (DCIM) to evaluate the infinite integral while using doub...

  • Article
  • Open Access
1,909 Views
14 Pages

19 October 2021

This paper describes the extended method of solving real polynomial zeros problems using the single-step method, namely, the interval trio midpoint symmetric single-step (ITMSS) method, which updates the midpoint at each forward-backward-forward step...

  • Article
  • Open Access
10 Citations
2,505 Views
9 Pages

19 October 2021

We give a definition of Green’s function of the general boundary value problems for non-self-adjoint second order differential equation with involution. The sufficient conditions for the basis property of system of eigenfunctions are established in t...

  • Article
  • Open Access
7 Citations
2,410 Views
19 Pages

Towards Potential Content-Based Features Evaluation to Tackle Meaningful Citations

  • Faiza Qayyum,
  • Harun Jamil,
  • Faisal Jamil and
  • Do-Hyeun Kim

19 October 2021

The scientific community has presented various citation classification models to refute the concept of pure quantitative citation analysis systems wherein all citations are treated equally. However, a small number of benchmark datasets exist, which m...

  • Feature Paper
  • Review
  • Open Access
5 Citations
4,503 Views
17 Pages

19 October 2021

We are interested here in the central organ of our thoughts: the brain. Advances in neuroscience have made it possible to obtain increasing information on the anatomy of this organ, at ever-higher resolutions, with different imaging techniques, on ev...

  • Article
  • Open Access
17 Citations
5,452 Views
10 Pages

19 October 2021

Expert systems, a form of artificial intelligence (AI), are typically designed to solve many real-world problems by reasoning through knowledge, which is primarily represented as IF–THEN rules, with the information acquired from humans or domain expe...

  • Review
  • Open Access
1 Citations
1,978 Views
24 Pages

18 October 2021

We review earlier and recent results on the Markov moment problem and related polynomial approximation on unbounded subsets. Such results allow proving the existence and uniqueness of the solutions for some Markov moment problems. This is the first a...

  • Article
  • Open Access
1,787 Views
19 Pages

Further Results on the IDCPE Class of Life Distributions

  • Haiyan Wang,
  • Diantong Kang and
  • Lei Yan

18 October 2021

Navarro et al. (2010) proposed the increasing dynamic cumulative past entropy (IDCPE) class of life distributions. In this paper, we investigate some characterizations of this class. Closure and reversed closure properties of the IDCPE class are obta...

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Symmetry - ISSN 2073-8994