Special Issue "Selected Papers from IIKII 2022 Conferences"

A special issue of Symmetry (ISSN 2073-8994).

Deadline for manuscript submissions: 31 December 2022 | Viewed by 591

Special Issue Editors

Dr. Charles Tijus
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Guest Editor
Director of the Cognitions Humaine et Artificielle Laboratory, University Paris 8, 93526 Saint-Denis, France
Interests: internet of objects; data mining; brain–computer interaction
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Prof. Dr. Jih-Fu Tu
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Guest Editor
Department of Electrical Engineering, Lunghwa University of Science and Technology, Taoyuan 333, Taiwan
Interests: human computer interaction; internet technologies; distributed processing systems
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Prof. Dr. Teen-­Hang Meen
E-Mail Website
Guest Editor
Department of Electronic Engineering, National Formosa University, Yunlin City 632, Taiwan
Interests: IoT devices; photovoltaic devices; STEM education
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Symmetry in language refers to a sense of harmonious and beautiful proportion and balance. In mathematics, "symmetry" has a more precise definition, that an object is invariant to any of various transformations; including reflectionrotation or scaling. Mathematical symmetry may be observed with respect to the passage of time; as a spatial relationship; through geometric transformations; through other kinds of functional transformations; and as an aspect of abstract objectstheoretic models and even knowledge itself. Recently, Symmetry theorem and simulation are widely applied engineering to improve the developments of new technologies.

In addition, International Institute of Knowledge Innovation and Invention (IIKII, http://www.iikii.org) is the institute to promote the exchange of innovations and inventions, and establishes a communication platform for international innovations and researches. In this year, IIKII cooperates with IEEE Tainan Section Sensors Council to hold IEEE conferences such as IEEE ECBIOS 2022 (http://www.ecbios.asia), IEEE ICEIB 2022 (http://www.iceib.asia), IEEE ICKII 2022 (http://www.ickii.org), IEEE ECICE 2022 (http://www.ecice.asia), and IEEE ICCCE 2022 (http://www.iccce.net). This Special Issue entitled "Selected Papers from IIKII 2022 conferences" aims to select excellent papers from IIKII 2021 conferences, including symmetry in physics, chemistry, biology, mathematics, and computer science, etc. We invite investigators to contribute original research articles, as well as review articles, to this special issue. Potential topics include, but are not limited to:

  • Physics: conservation laws, Noether's theorem, spatial parity, charge parity, time parity, G-parity, standard model, internal symmetry, Lorentz symmetry, transformations, invariance, conservation, local and global symmetries, laws and symmetry, symmetry breaking, color symmetry, periodic and quasiperiodic crystals, time-reversal symmetry breaking, symmetry and complexity, Curie-Rosen symmetry principles, constants, biophysics, entropy, and indistinguishability.
  • Chemistry: crystal and crystallography; chiral molecules, chiral resolution and asymmetric synthesis, asymmetric induction, chiral auxiliaries and chiral catalysts, stereochemistry, diastereomers, stereogenic, stereoisomers (enantiomers, atropisomers, diastereomers), stability, mixing, and phase separation.
  • Biology:symmetry in biology, radial symmetry (tetramerism, pentamerism, etc.), diversity, preservation, sustainability, morphology, origin of life, and molecular evolution (homochirality).
  • Mathematics: invariance, transformation, group theory, Lie groups, chirality, achiral or amphichiral, helix and Möbius strip, knot theory, graph theory, isometry, plane of symmetry, skewness, vertex algebra, asymmetry, dissymmetry, nonsymmetry and antisymmetry, supergroups and nonlinear algebraic structures, supersymmetry and supergravity, strings and branes, integrability and geometry, information theory, Felix Klein's Erlangen Program, and continuous symmetry.
  • Computer Science, Theory and Methods:computer-aided design, computational geometry, computer graphics, visualization, image compression, data compression, pattern recognition, diversity, similarity, and conservation and sustainability.
  • Symmetry and other scientific disciplines and engineering.

Dr. Charles Tijus
Prof. Dr. Jih-Fu Tu
Prof. Dr. Teen-­Hang Meen
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Symmetry is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1800 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.


  • physics symmetry
  • chemistry symmetry
  • biology symmetry
  • mathematics symmetry, computer science, theory and methods
  • symmetry and other scientific disciplines and engineering

Published Papers (1 paper)

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Optimization for an Indoor 6G Simultaneous Wireless Information and Power Transfer System
Symmetry 2022, 14(6), 1268; https://doi.org/10.3390/sym14061268 - 19 Jun 2022
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Antenna beamforming for Simultaneous Wireless Information and Power Transfer (SWIPT) and Wireless Power Transfer (WPT) in an indoor 6G communication system is presented in this paper. The objective function is to maximize the total harvesting power for the SWIPT and WPT nodes with [...] Read more.
Antenna beamforming for Simultaneous Wireless Information and Power Transfer (SWIPT) and Wireless Power Transfer (WPT) in an indoor 6G communication system is presented in this paper. The objective function is to maximize the total harvesting power for the SWIPT and WPT nodes with the constraints of the bit error rate and minimum harvesting power. In the study, the power-splitting ratio between harvesting power and decoding information can be adjusted for the SWIPT node. Due to the non-convex problem, we use Self-Adaptive Dynamic Differential Evolution (SADDE) to optimize the designed multi-objective function. We use a symmetric antenna array to study three situations of distance—closer, farther, and similar—between the transmitting antenna and the individual SWIPT and WPT nodes in this paper. Experimental results show that the overall harvesting efficiency is improved, especially in the case of SWIPT nodes closer to the transmitter. The total harvesting power can be improved by 86.7% in the total short-distance case, and by 7.87% in the total long-distance case. Full article
(This article belongs to the Special Issue Selected Papers from IIKII 2022 Conferences)
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