Announcements

1. “Limb Preference in Animals: New Insights into the Evolution of Manual Laterality in Hominids”
by Grégoire Boulinguez-Ambroise, Juliette Aychet and Emmanuelle Pouydebat
Symmetry 2022, 14(1), 96; https://doi.org/10.3390/sym14010096
Available online: https://www.mdpi.com/2073-8994/14/1/96

2. “A Systematic Review of Non-Pharmacological Interventions to Improve Gait Asymmetries in Neurological Populations”
by Krista G. Meder, Chanel T. LoJacono and Christopher K. Rhea
Symmetry 2022, 14(2), 281; https://doi.org/10.3390/sym14020281
Available online: https://www.mdpi.com/2073-8994/14/2/281

3. “A 3D Agent-Based Model of Lung Fibrosis”
by Nicolò Cogno, Roman Bauer and Marco Durante
Symmetry 2022, 14(1), 90; https://doi.org/10.3390/sym14010090
Available online: https://www.mdpi.com/2073-8994/14/1/90

4. “Genetic Factors That Affect Asymmetric Mandibular Growth—A Systematic Review”
by Alicja Babczyńska, Beata Kawala and Michał Sarul
Symmetry 2022, 14(3), 490; https://doi.org/10.3390/sym14030490
Available online: https://www.mdpi.com/2073-8994/14/3/490

5. “Asymmetry in Muscle Strength, Dynamic Balance, and Range of Motion in Adult Symptomatic Hip Dysplasia”
by Haifang Wang, Hailong Yu, Yonghwan Kim and Tingting Chen
Symmetry 2022, 14(4), 748; https://doi.org/10.3390/sym14040748
Available online: https://www.mdpi.com/2073-8994/14/4/748

6. “Cerebral Polymorphisms for Lateralisation: Modelling the Genetic and Phenotypic Architectures of Multiple Functional Modules”
by Chris McManus
Symmetry 2022, 14(4), 814; https://doi.org/10.3390/sym14040814
Available online: https://www.mdpi.com/2073-8994/14/4/814

7. “Structural Brain Asymmetries for Language: A Comparative Approach across Primates”
by Yannick Becker and Adrien Meguerditchian
Symmetry 2022, 14(5), 876; https://doi.org/10.3390/sym14050876
Available online: https://www.mdpi.com/2073-8994/14/5/876

1. “Spectrum of Primordial Gravitational Waves in Modified Gravities: A Short Overview”
by Sergei D. Odintsov, Vasilis K. Oikonomou and Ratbay Myrzakulov
Symmetry 2022, 14(4), 729; https://doi.org/10.3390/sym14040729
Available online: https://www.mdpi.com/2073-8994/14/4/729

2. “The Cosmological Constant as Event Horizon”
by Enrique Gaztanaga
Symmetry 2022, 14(2), 300; https://doi.org/10.3390/sym14020300
Available online: https://www.mdpi.com/2073-8994/14/2/300

3. “Infrasonic, Acoustic and Seismic Waves Produced by the Axion Quark Nuggets”
by Dmitry Budker, Victor V. Flambaum and Ariel Zhitnitsky
Symmetry 2022, 14(3), 459; https://doi.org/10.3390/sym14030459
Available online: https://www.mdpi.com/2073-8994/14/3/459

4. “Improved Search for Neutron to Mirror-Neutron Oscillations in the Presence of Mirror Magnetic Fields with a Dedicated Apparatus at the PSI UCN Source”
by Nicholas J. Ayres, Zurab Berezhiani, Riccardo Biondi, Georg Bison, Kazimierz Bodek, Vira Bondar, Pin-Jung Chiu, Manfred Daum, Reza Tavakoli Dinani, Cornelis B. Doorenbos et al.
Symmetry 2022, 14(3), 503; https://doi.org/10.3390/sym14030503
Available online: https://www.mdpi.com/2073-8994/14/3/503

5. “Neutron-Mirror Neutron Oscillations in Absorbing Matter”
by Yuri Kamyshkov, James Ternullo, Louis Varriano and Zurab Berezhiani
Symmetry 2022, 14(2), 230; https://doi.org/10.3390/sym14020230
Available online: https://www.mdpi.com/2073-8994/14/2/230

6. “From Memristor-Modeled Jerk System to the Nonlinear Systems with Memristor”
by Xianming Wu, Shaobo He, Weijie Tan and Huihai Wang
Symmetry 2022, 14(4), 659; https://doi.org/10.3390/sym14040659
Available online: https://www.mdpi.com/2073-8994/14/4/659

7. “A Search for Neutron to Mirror Neutron Oscillation Using Neutron Electric Dipole Moment Measurements”
by Prajwal Mohanmurthy, Albert R. Young, Jeff A. Winger and Geza Zsigmond
Symmetry 2022, 14(3), 487;  https://doi.org/10.3390/sym14030487
Available online: https://www.mdpi.com/2073-8994/14/3/487

8. “A Search for Cosmic Ray Bursts at 0.1 PeV with a Small Air Shower Array”
by Roger Clay, Jassimar Singh, Piotr Homola, Olaf Bar, Dmitry Beznosko, Apoorva Bhatt, Gopal Bhatta, Łukasz Bibrzycki, Nikolay Budnev, David E. Alvarez-Castillo et al.
Symmetry 2022, 14(3), 501; https://doi.org/10.3390/sym14030501
Available online: https://www.mdpi.com/2073-8994/14/3/501

9. “Neutron Stars with Baryon Number Violation, Probing Dark Sectors”
by Jeffrey M. Berryman, Susan Gardner and Mohammadreza Zakeri
Symmetry 2022, 14(3), 518; https://doi.org/10.3390/sym14030518
Available online: https://www.mdpi.com/2073-8994/14/3/518

10. “Design of a New Dimension-Changeable Hyperchaotic Model Based on Discrete Memristor”
by Chengjing Wei, Guodong Li and Xiangliang Xu
Symmetry 2022, 14(5), 1019; https://doi.org/10.3390/sym14051019
Available online: https://www.mdpi.com/2073-8994/14/5/1019

11. “Time-like Proton Form Factors with Initial State Radiation Technique”
by Dexu Lin, Alaa Dbeyssi and Frank Maas
Symmetry 2022, 14(1), 91; https://doi.org/10.3390/sym14010091
Available online: https://www.mdpi.com/2073-8994/14/1/91

12. “Notes on Confinement on R³ × S¹: From Yang–Mills, Super-Yang–Mills, and QCD (adj) to QCD(F)”
by Erich Poppitz
Symmetry 2022, 14(1), 180; https://doi.org/10.3390/sym14010180
Available online: https://www.mdpi.com/2073-8994/14/1/180

13. “Low-Energy Interactions of Mesons with Participation of the First Radially Excited States in U(3) × U(3) NJL Model”
by Mikhail Konstantinovich Volkov, Aleksey Aleksandrovich Pivovarov and Kanat Nurlan
Symmetry 2022, 14(2), 308; https://doi.org/10.3390/sym14020308
Available online: https://www.mdpi.com/2073-8994/14/2/308

The goal of the Editor’s Choice Articles project is to promote high-quality articles published in the “Chemistry and Symmetry/Asymmetry” Section in Symmetry (ISSN: 2073-8994). Please find below the list of articles carefully handpicked by the scientific editors of the journal, which we believe will be of interest to you.

1. “Functional Chirality: From Small Molecules to Supramolecular Assemblies”
by Alaa Adawy
Symmetry 2022, 14(2), 292; https://doi.org/10.3390/sym14020292
Available online: https://www.mdpi.com/2073-8994/14/2/292

2. “Impact of Molecular Symmetry/Asymmetry on Insulin-Sensitizing Treatments for Type 2 Diabetes”
by Jessica Georgina Filisola-Villaseñor, María E. Aranda-Barradas, Susana Patricia Miranda-Castro, Jessica Elena Mendieta-Wejebe, Amaranta Sarai Valdez Guerrero, Selene Amasis Guillen Castro, Macario Martínez Castillo, Feliciano Tamay-Cach and Samuel Álvarez-Almazán
Symmetry 2022, 14(6), 1240; https://doi.org/10.3390/sym14061240
Available online: https://www.mdpi.com/2073-8994/14/6/1240

3. “Chirality in Organic and Mineral Systems: A Review of Reactivity and Alteration Processes Relevant to Prebiotic Chemistry and Life Detection Missions”
by Carina Lee, Jessica M. Weber, Laura E. Rodriguez, Rachel Y. Sheppard, Laura M. Barge, Eve L. Berger and Aaron S. Burton
Symmetry 2022, 14(3), 460; https://doi.org/10.3390/sym14030460
Available online: https://www.mdpi.com/2073-8994/14/3/460

4. “How Symmetry Influences the Dissociation of Protonated Cyclic Peptides”
by Ariel F. Pérez-Mellor, Riccardo Spezia and Anne Zehnacker
Symmetry 2022, 14(4), 679; https://doi.org/10.3390/sym14040679
Available online: https://www.mdpi.com/2073-8994/14/4/679

5. “Evolution of Microstructure, Texture and Corrosion Properties of Additively Manufactured AlSi10Mg Alloy Subjected to Equal Channel Angular Pressing (ECAP)”
by Przemysław Snopiński, Anna Woźniak, Dariusz Łukowiec, Krzysztof Matus, Tomasz Tański, Stanislav Rusz and Ondřej Hilšer
Symmetry 2022, 14(4), 674; https://doi.org/10.3390/sym14040674
Available online: https://www.mdpi.com/2073-8994/14/4/674

6. “Recent Progress of Squaraine-Based Fluorescent Materials and Their Biomedical Applications”
by Weiguo Qiao and Zhong’an Li
Symmetry 2022, 14(5), 966; https://doi.org/10.3390/sym14050966
Available online: https://www.mdpi.com/2073-8994/14/5/966

7. “Homochiral or Heterochiral: A Systematic Study of Threonine Clusters Using a FT ICR Mass Spectrometer”
by Luyang Jiao, Mengying Du, Yameng Hou, Yuan Ma and Xianglei Kong
Symmetry 2022, 14(1), 86; https://doi.org/10.3390/sym14010086
Available online: https://www.mdpi.com/2073-8994/14/1/86

8. “Symmetry Constraints on Spin Order Transfer in Parahydrogen-Induced Polarization (PHIP)”
by Andrey N. Pravdivtsev, Danila A. Barskiy, Jan-Bernd Hövener and Igor V. Koptyug
Symmetry 2022, 14(3), 530; https://doi.org/10.3390/sym14030530
Available online: https://www.mdpi.com/2073-8994/14/3/530

9. “Lamellar Tetragonal Symmetry of Amphiphilic Thermotropic Ionic Liquid Crystals in the Framework of Other Closely Related Highly Ordered Structures”
by Michael Arkas, Marilina Douloudi, Michail Vardavoulias and Theodora Katsika
Symmetry 2022, 14(2), 394; https://doi.org/10.3390/sym14020394
Available online: https://www.mdpi.com/2073-8994/14/2/394

10. “Analysis of Electro-Optical Behavior in Liquid Crystal Cells with Asymmetric Anchoring Strength”
by Rumiko Yamaguchi
Symmetry 2022, 14(1), 85; https://doi.org/10.3390/sym14010085
Available online: https://www.mdpi.com/2073-8994/14/1/85

11. “Attaching Onto or Inserting Into an Intramolecular Hydrogen Bond: Exploring and Controlling a Chirality-Dependent Dilemma for Alcohols”
by Manuel Lange, Elisabeth Sennert and Martin A. Suhm
Symmetry 2022, 14(2), 357; https://doi.org/10.3390/sym14020357
Available online: https://www.mdpi.com/2073-8994/14/2/357

12. “MCD and Induced CD of a Tetraphenoxyperylene-Based Dye in Chiral Solvents: An Experimental and Computational Study”
by Simone Ghidinelli, Marco Fusè, Giuseppe Mazzeo, Sergio Abbate and Giovanna Longhi
Symmetry 2022, 14(6), 1108; https://doi.org/10.3390/sym14061108
Available online: https://www.mdpi.com/2073-8994/14/6/1108

13. “Interface Asymmetry Induced and Surface Pressure Controlled Valence Tautomerism in Monolayers of bis-Phthalocyaninates of Lanthanides”
by Daria S. Kutsybala, Alexander V. Shokurov, Alexander G. Martynov, Alexey V. Yagodin, Vladimir V. Arslanov, Yulia G. Gorbunova and Sofiya L. Selektor
Symmetry 2022, 14(2), 340; https://doi.org/10.3390/sym14020340
Available online: https://www.mdpi.com/2073-8994/14/2/340

14. “Crystal Structure of Chiral Drug Prenalterol and Its Precursor Prone to Spontaneous Resolution”
by Alexander A. Bredikhin, Robert R. Fayzullin and Zemfira A. Bredikhina
Symmetry 2022, 14(6), 1150; https://doi.org/10.3390/sym14061150
Available online: https://www.mdpi.com/2073-8994/14/6/1150

15. “Energetic and Geometric Characteristics of Substituents, Part 3: The Case of NO₂ and NH₂ Groups in Their Mono-Substituted Derivatives of Six-Membered Heterocycles”
by Paweł A. Wieczorkiewicz, Halina Szatylowicz and Tadeusz M. Krygowski
Symmetry 2022, 14(1), 145; https://doi.org/10.3390/sym14010145
Available online: https://www.mdpi.com/2073-8994/14/1/145

We would like to thank all the research groups that authored these exceptional papers for their contribution. We sincerely hope you find these articles of Symmetry as useful and insightful as we have found them.

1. “Best Dominants and Subordinants for Certain Sandwich-Type Theorems”
by Adriana Cătaş, Emilia Borşa and Loredana Iambor
Symmetry 2022, 14(1), 62; https://doi.org/10.3390/sym14010062
Available online: https://www.mdpi.com/2073-8994/14/1/62

2. “On the Unique Solvability of Incomplete Cauchy Type Problems for a Class of Multi-Term Equations with the Riemann–Liouville Derivatives”
by Vladimir E. Fedorov, Wei-Shih Du and Mikhail M. Turov
Symmetry 2022, 14(1), 75; https://doi.org/10.3390/sym14010075
Available online: https://www.mdpi.com/2073-8994/14/1/75

3. “Intelligent System for Estimation of the Spatial Position of Apples Based on YOLOv3 and Real Sense Depth Camera D415”
by Nikita Andriyanov, Ilshat Khasanshin, Daniil Utkin, Timur Gataullin, Stefan Ignar, Vyacheslav Shumaev and Vladimir Soloviev
Symmetry 2022, 14(1), 148; https://doi.org/10.3390/sym14010148
Available online: https://www.mdpi.com/2073-8994/14/1/148

4. “Transient Propagation of Spherical Waves in Porous Material: Application of Fractional Calculus”
by Zine El Abiddine Fellah, Mohamed Fellah, Rémi Roncen, Nicholas O. Ongwen, Erick Ogam and Claude Depollier
Symmetry 2022, 14(2), 233; https://doi.org/10.3390/sym14020233
Available online: https://www.mdpi.com/2073-8994/14/2/233

5. “Bayesian Interval Estimation for the Two-Parameter Exponential Distribution Based on the Right Type II Censored Sample”
by Shu-Fei Wu
Symmetry 2022, 14(2), 352; https://doi.org/10.3390/sym14020352
Available online: https://www.mdpi.com/2073-8994/14/2/352

6. “Some Results in the Theory of a Cosserat Thermoelastic Body with Microtemperatures and Inner Structure”
by Marin Marin, Sorin Vlase, Eduard M. Craciun, Nicolae Pop and Ioan Tuns
Symmetry 2022, 14(3), 511; https://doi.org/10.3390/sym14030511
Available online: https://www.mdpi.com/2073-8994/14/3/511

We are pleased to announce the launch of a new initiative—the MDPI Special Issue Mentor Program.

This program will enable early career researchers (who must hold a Ph.D. in a related field) to experience editing a Special Issue in MDPI journals, under the mentorship of our experienced Editorial Board Members or other experienced scientists. The mentor program will provide an excellent opportunity for early career scientists to gain editorial experience, and to cultivate their ability to edit scientific research.

The mentee’s responsibilities include:

• Proposing a Special Issue title and assisting the mentor in preparing a summary (around 200–400 words) and 3–10 keywords describing the background, importance, and goal of the Issue;
• Writing a brief promotion plan for the Special Issue;
• Preparing a list of scholars who may be interested in the Issue and personally e-mailing invitations on behalf of Guest Editors;
• Writing an editorial for the online Special Issue together with the mentor.

The mentor’s responsibilities include:

• Conducting a final check before the Special Issue is published online;
• Performing editorial control of the Special Issue and quality control of the publications, both of which must be carried out in a timely manner;
• Providing suggestions to younger scholars if they have any doubts or concerns regarding submissions;
• Organizing video calls with young scholars and the Editorial Office regularly to discuss problems and improvement suggestions for the Special Issue;
• Making and submitting decisions regarding submissions with the assistance of mentees.

Certificates and awards:
After the Special Issue closes, the Editorial Office will provide official certificates for all the mentors and early career researchers.

If you are interested in this opportunity, please send your Special Issue proposal to the Editorial Office of a journal you choose, and we will discuss the process (i.e., mentor collaboration, Special Issue topic feasibility analysis, etc.) in further detail. The full list of MDPI journals is as follows: https://www.mdpi.com/about/journals.

In addition to the new Special Issue Mentor Program, we will continue to welcome all Special Issue proposals focusing on hot research topics.

We are pleased to announce that Prof. Dr. Dongfang Li has been appointed Associate Editor of the “Mathematics and Symmetry/Asymmetry” Section in Symmetry (ISSN: 2073-8994). We wish Prof. Dr. Dongfang Li every success in his new position and we look forward to his contributions to the journal.

Mathematics is central to modeling problems from other areas. It is the language that scientists use to understand the world. Symmetries often appear in mathematical formulations and become essential for solving problems or delving further into research.

The main aim of this Section is to present fundamental and frontier theories and techniques for modern science and technology. It will stimulate research interest for the exploration of mathematical applications and directly pass new knowledge to the next generation. The objective of this Section is to present high-quality studies that use non-trivial mathematics and apply their symmetries to relevant problems from all areas. Among others, papers on these topics are welcome:

• Dynamical systems;
• Mathematical physics;
• Geometrical and topological methods;
• Applied mathematics;
• Discrete mathematics and graph theory;
• Mathematical analysis.

Prof. Dr. Dongfang Li is now leading the Special Issue "Symmetric Methods and Analysis for Differential and Integral Equations", in which feature papers will be published.

For more information about the “Mathematics and Symmetry/Asymmetry” Section, please visit https://www.mdpi.com/journal/symmetry/sections/mathematics_symmetry.

The articles below have been selected as cover articles for 2022 by the Editorial Office of Symmetry (ISSN: 2073-8994). They include liquid crystal, magnetic resonance imaging (MRI), protein asymmetry, ferroelectrics, gravitational waves and neutrino physics in the first half of the year; in the second half of the year, they include linear operators, metal catalysis, quantum electrodynamics, geometric measure theory, qubit arrays and the Pt-Mn₂O₃ catalyst. We hope it provides insights and references to scholars in related fields.

1. “Analysis of Electro-Optical Behavior in Liquid Crystal Cells with Asymmetric Anchoring Strength”
by Rumiko Yamaguchi
Symmetry 2022, 14(1), 85; https://doi.org/10.3390/sym14010085
Available online: https://www.mdpi.com/2073-8994/14/1/85

2. “Longitudinal Observation of Asymmetric Iron Deposition in an Intracerebral Hemorrhage Model Using Quantitative Susceptibility Mapping”
by Keiho Tsuji, Ryutarou Onishi, Reika Sawaya, Narumi Arihara, Junpei Ueda and Shigeyoshi Saito
Symmetry 2022, 14(2), 350; https://doi.org/10.3390/sym14020350
Available online: https://www.mdpi.com/2073-8994/14/2/350

3. “Symmetric versus Asymmetric Features of Homologous Homodimeric Amine Oxidases: When Water and Cavities Make the Difference”
by Eleonora Nicolai, Velia Minicozzi, Luisa Di Paola, Rosaria Medda, Francesca Pintus, Giampiero Mei and Almerinda Di Venere
Symmetry 2022, 14(3), 522; https://doi.org/10.3390/sym14030522
Available online: https://www.mdpi.com/2073-8994/14/3/522

4. “Spectrum of Primordial Gravitational Waves in Modified Gravities: A Short Overview”
by Sergei D. Odintsov, Vasilis K. Oikonomou and Ratbay Myrzakulov
Symmetry 2022, 14(4), 729; https://doi.org/10.3390/sym14040729
Available online: https://www.mdpi.com/2073-8994/14/4/729

5. “Topological Excitations in Neutral–Ionic Transition Systems”
by Keishi Sunami, Ryosuke Takehara, Kazuya Miyagawa, Hiroshi Okamoto and Kazushi Kanoda
Symmetry 2022, 14(5), 925; https://doi.org/10.3390/sym14050925
Available online: https://www.mdpi.com/2073-8994/14/5/925

6. “A Consistent Theory of Tachyons with Interesting Physics for Neutrinos”
by Charles Schwartz
Symmetry 2022, 14(6), 1172; https://doi.org/10.3390/sym14061172
Available online: https://www.mdpi.com/2073-8994/14/6/1172

7. “On Special Properties for Continuous Convex Operators and Related Linear Operators”
by Octav Olteanu
Symmetry 2022, 14(7), 1390; https://doi.org/10.3390/sym14071390
Available online: https://www.mdpi.com/2073-8994/14/7/1390

8. “C₂-Symmetric N-Heterocyclic Carbenes in Asymmetric Transition-Metal Catalysis”
by Costabile Chiara, Stefania Pragliola and Fabia Grisi
Symmetry 2022, 14(8), 1615; https://doi.org/10.3390/sym14081615
Available online: https://www.mdpi.com/2073-8994/14/8/1615

9. “Comparing Hermitian and Non-Hermitian Quantum Electrodynamics”
by Southall Jake, Daniel Hodgson, Robert Purdy and Almut Beige
Symmetry 2022, 14(9), 1816; https://doi.org/10.3390/sym14091816
Available online: https://www.mdpi.com/2073-8994/14/9/1816

10. “Discontinuous Normals in Non-Euclidean Geometries and Two-Dimensional Gravity”
by Emmanuele Battista and Giampiero Esposito
Symmetry 2022, 14(10), 1979; https://doi.org/10.3390/sym14101979
Available online: https://www.mdpi.com/2073-8994/14/10/1979

11. “The Value of the Early-Time Lieb-Robinson Correlation Function for Qubit Arrays”
by Brendan J. Mahoney and Craig S. Lent
Symmetry 2022, 14(11), 2253; https://doi.org/10.3390/sym14112253 
Available online: https://www.mdpi.com/2073-8994/14/11/2253

12. “Pt-Modified Nano-Sized Mn₂O₃ Oxide Prepared from the Mn₃O₄ Phase with Tetragonal Symmetry for CO Oxidation”
by Todorova Silviya, Anton Naydenov, Maya Shopska, Hristo Kolev, Iliyana Yordanova and Krasimir Tenchev
Symmetry 2022, 14(12), 2543; https://doi.org/10.3390/sym14122543
Available online: https://www.mdpi.com/2073-8994/14/12/2543

We are pleased to announce that we have selected ten articles from the journal Symmetry (ISSN: 2073-8994) on COVID-19-related topics.

1. “On Odd Perks-G Class of Distributions: Properties, Regression Model, Discretization, Bayesian and Non-Bayesian Estimation, and Applications”
by Ibrahim Elbatal, Naif Alotaibi, Ehab M. Almetwally, Salem A. Alyami and Mohammed Elgarhy
Symmetry 2022, 14(5), 883; https://doi.org/10.3390/sym14050883
Available online: https://www.mdpi.com/2073-8994/14/5/883

2. “System of Time Fractional Models for COVID-19: Modeling, Analysis and Solutions”
by Olaniyi Iyiola, Bismark Oduro, Trevor Zabilowicz, Bose Iyiola and Daniel Kenes
Symmetry 2021, 13(5), 787; https://doi.org/10.3390/sym13050787
Available online: https://www.mdpi.com/2073-8994/13/5/787

3. “Stability Analysis and Existence of Solutions for a Modified SIRD Model of COVID-19 with Fractional Derivatives”
by Bilal Basti, Nacereddine Hammami, Imadeddine Berrabah, Farid Nouioua, Rabah Djemiat and Noureddine Benhamidouche
Symmetry 2021, 13(8), 1431; https://doi.org/10.3390/sym13081431
Available online: https://www.mdpi.com/2073-8994/13/8/1431

4. “Numerical Solutions of the Mathematical Models on the Digestive System and COVID-19 Pandemic by Hermite Wavelet Technique”
by Kumbinarasaiah Srinivasa, Haci Mehmet Baskonus and Yolanda Guerrero Sánchez
Symmetry 2021, 13(12), 2428; https://doi.org/10.3390/sym13122428
Available online: https://www.mdpi.com/2073-8994/13/12/2428

5. “The Multi-Compartment SI(RD) Model with Regime Switching: An Application to COVID-19 Pandemic”
by Manuel L. Esquível, Nadezhda P. Krasii, Gracinda R. Guerreiro and Paula Patrício
Symmetry 2021, 13(12), 2427; https://doi.org/10.3390/sym13122427
Available online: https://www.mdpi.com/2073-8994/13/12/2427

6. “A Probability Mass Function for Various Shapes of the Failure Rates, Asymmetric and Dispersed Data with Applications to Coronavirus and Kidney Dysmorphogenesis”
by Mahmoud El-Morshedy, Morad Alizadeh, Afrah Al-Bossly and Mohamed S. Eliwa
Symmetry 2021, 13(10), 1790; https://doi.org/10.3390/sym13101790
Available online: https://www.mdpi.com/2073-8994/13/10/1790

7. “SimBetaReg Web-Tool: The Easiest Way to Implement the Beta and Simplex Regression Models”
by Emrah Altun and Mahmoud El-Morshedy
Symmetry 2021, 13(12), 2437; https://doi.org/10.3390/sym13122437
Available online: https://www.mdpi.com/2073-8994/13/12/2437

8. “Bayesian Inferential Approaches and Bootstrap for the Reliability and Hazard Rate Functions under Progressive First-Failure Censoring for Coronavirus Data from Asymmetric Model”
by Rashad M. EL-Sagheer, Muqrin A. Almuqrin, Mahmoud El-Morshedy, Mohamed S. Eliwa, Fathy H. Eissa and Doaa A. Abdo
Symmetry 2022, 14(5), 956; https://doi.org/10.3390/sym14050956
Available online: https://www.mdpi.com/2073-8994/14/5/956

9. “The Effect of Media in Mitigating Epidemic Outbreaks: The Sliding Mode Control Approach”
by Napasool Wongvanich
Symmetry 2022, 14(5), 1010; https://doi.org/10.3390/sym14051010
Available online: https://www.mdpi.com/2073-8994/14/5/1010

10. “Stability and Sensitivity Analysis of the COVID-19 Spread with Comorbid Diseases”
by Jonner Nainggolan and Moch. Fandi Ansori
Symmetry 2022, 14(11), 2269; https://doi.org/10.3390/sym14112269
Available online: https://www.mdpi.com/2073-8994/14/11/2269

MDPI has just become the first open access (OA) publisher to reach the milestone of one million articles published. That is one million articles freely available to all, to circulate and build upon! We are proud to share this special moment with the global scientific community.

This landmark has been reached thanks to the immeasurable support of more than 600,000 expert reviewers, 66,000 editorial board members and 6700 hard-working colleagues across MDPI’s global offices.

Within more than 25 years of publishing, our journals received 2.1 million manuscripts and generated 4.6 million peer review reports to get to one million papers published.

Reaching the milestone of one million articles published reinforces our mission to remove any existing barriers and to make scientific research accessible to all. Since its inception, MDPI’s goal has been to create reliable processes to make science open. This is a path towards facilitating the dissemination of novel insights in scientific communities.

Regular feedback from authors and reviewers shows that our service is greatly appreciated and needed. At the same time, the feedback helps us identify areas for further improvement.

As it stands, a significant share of published research findings remain closed access. More than half of the content published with the most well-known legacy publishers stays behind a paywall, and that is not including articles published in hybrid OA journals, or made available months or years after publication.

A new policy announced by the US administration in August 2022 requires that, as of January 2026, all US federally funded research be made freely and immediately available after publication. While the new policy does not mandate articles be published under an open access license, it is aligned with the open access movement in removing all barriers to research. Similarly, some of the most advanced research institutions in the world intend to have all funded research articles published in open access by 2025.

MDPI is proud to be the leading agent of the transition to open access.

"Thanks a Million" to all the contributors!

We are pleased to announce that the website of the MDPI Sustainability Foundation has been revamped! For the past couple of months, our UX UI team and front-end developers have been working hard to launch the website in time for the opening of the Sustainability Awards nominations.

The website is not the only thing that has had a remodeling. Indeed, the format of the Emerging Sustainability Leader Award (ESLA) has been updated. ESLA is now a competition open to individual researchers or start-ups founded by researchers under the age of 35. Nominee applications will go through 2 rounds of selection until the final 3 are decided. The finalists will then be invited to give pitch presentations during the Award Ceremony to win either first place (10,000 USD) or runner-up (2 x 5000 USD).

The World Sustainability Award, on the other hand, remains the same: a total prize money of 100,000 USD is up for grabs by senior individual researchers or groups of researchers from the international research community.

Nominations for both the World Sustainability Award and the Emerging Sustainability Leader award are now open! Check out our new website for more information on how to nominate.