You are currently viewing a new version of our website. To view the old version click .

Symmetry, Volume 13, Issue 2

February 2021 - 209 articles

Cover Story: As a tetrahedron could be assembled out of four identical pieces, a tetramer of phosphonic acid self-assembles out of four chemically equivalent monomers. Each monomer is interlinked to three others, which sums up to eight strong hydrogen bonds per tetramer, giving a robust and rigid structure to the resulting cage-like supramolecular complex. View this paper.
  • Issues are regarded as officially published after their release is announced to the table of contents alert mailing list .
  • You may sign up for email alerts to receive table of contents of newly released issues.
  • PDF is the official format for papers published in both, html and pdf forms. To view the papers in pdf format, click on the "PDF Full-text" link, and use the free Adobe Reader to open them.

Articles (209)

  • Article
  • Open Access
19 Citations
2,965 Views
21 Pages

On the Development of Triple Homogeneously Weighted Moving Average Control Chart

  • Muhammad Riaz,
  • Zameer Abbas,
  • Hafiz Zafar Nazir and
  • Muhammad Abid

23 February 2021

To detect sustainable changes in the manufacturing processes, memory-type charting schemes are frequently functioning. The recently designed, homogenously weighted moving average (HWMA) technique is effective for identifying substantial changes in th...

  • Communication
  • Open Access
1 Citations
2,810 Views
6 Pages

Isolation and Structure Elucidation of a Novel Symmetrical Macrocyclic Phthalate Hexaester

  • Michiya Kamio,
  • Weina Jiang,
  • Hiroki Osada,
  • Masayuki Fukuoka,
  • Hajime Uchida,
  • Ryuichi Watanabe,
  • Toshiyuki Suzuki and
  • Hiroshi Nagai

23 February 2021

A novel symmetrical macrocyclic phthalate hexaester (1) and a known macrocyclic phthalate tetraester (2) were isolated during a natural product-exploring program on the cyanobacterium Moorea producens. Their structures were elucidated based on spectr...

  • Article
  • Open Access
38 Citations
4,916 Views
20 Pages

GLM-Based Flexible Monitoring Methods: An Application to Real-Time Highway Safety Surveillance

  • Arshad Jamal,
  • Tahir Mahmood,
  • Muhamad Riaz and
  • Hassan M. Al-Ahmadi

23 February 2021

Statistical modeling of historical crash data can provide essential insights to safety managers for proactive highway safety management. While numerous studies have contributed to the advancement from the statistical methodological front, minimal res...

  • Article
  • Open Access
3 Citations
4,537 Views
17 Pages

23 February 2021

This paper adopts the Kinetic Theory for Active Particles (KTAP) approach to model the dynamics of liquidity profiles on a complex adaptive network system that mimic a stylized financial market. Individual incentives of investors to form or delete a...

  • Article
  • Open Access
11 Citations
4,203 Views
11 Pages

22 February 2021

The dynamics of two charged qubits containing Josephson Junctions inside a cavity are investigated under the intrinsic decoherence effect. New types of quantum correlations via local quantum Fisher information and Bures distance norm are explored. We...

  • Article
  • Open Access
2 Citations
2,242 Views
9 Pages

Sliding Mode Control and Geometrization Conjecture in Seismic Response

  • Ligia Munteanu,
  • Dan Dumitriu,
  • Cornel Brisan,
  • Mircea Bara,
  • Veturia Chiroiu,
  • Nicoleta Nedelcu and
  • Cristian Rugina

22 February 2021

The purpose of this paper is to study the sliding mode control as a Ricci flow process in the context of a three-story building structure subjected to seismic waves. The stability conditions result from two Lyapunov functions, the first associated wi...

  • Feature Paper
  • Article
  • Open Access
14 Citations
3,243 Views
15 Pages

22 February 2021

Using a special case of the Efros theorem which was derived by Wlodarski, and operational calculus, it was possible to derive many infinite integrals, finite integrals and integral identities for the function represented by the inverse Laplace transf...

  • Article
  • Open Access
5 Citations
3,240 Views
15 Pages

22 February 2021

The ocean occupies more than two-thirds of the earth’s area, providing a lot of oxygen and materials for human survival and development. However, with human activities, a large number of sewage, plastic bags, and other wastes are discharged into the...

  • Article
  • Open Access
47 Citations
5,482 Views
16 Pages

22 February 2021

Plant species recognition from visual data has always been a challenging task for Artificial Intelligence (AI) researchers, due to a number of complications in the task, such as the enormous data to be processed due to vast number of floral species....

  • Article
  • Open Access
55 Citations
12,420 Views
28 Pages

22 February 2021

The ageing population’s problems directly impact countries’ socio-economic structure, as more resources are required to monitor the aged population’s health. The growth in human life expectancy is increasing due to medical technologies and nutritiona...

of 21

Get Alerted

Add your email address to receive forthcoming issues of this journal.

XFacebookLinkedIn
Symmetry - ISSN 2073-8994