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Symmetry
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Announcements

27 May 2025
Welcoming Our New Honorary Editors-in-Chief of Symmetry

We are honored to announce the appointment of two academicians of the Chinese Academy of Sciences as Honorary Editors-in-Chief of the journal Symmetry (ISSN: 2073-8994). We appreciate their recognition of our journal and their pledges of support.

Name: Prof. Dr. Ronggen Cai
Affiliation: Ningbo University, Ningbo, China
Interests: gravitational theory; cosmology

Name: Prof. Dr. Jiping Zhang
Affiliation: Peking University, Beijing, China
Interests: algebra

Further details about the Editorial Board of Symmetry can be found at the following link: https://www.mdpi.com/journal/symmetry/editors.

Symmetry Editorial Office

5 August 2025
Symmetry Best Paper Award—Winners Announced


Symmetry (ISSN: 2073-8994) is pleased to announce the winners of the Symmetry Best Paper Award, selecting one review and three research articles among the peer-reviewed papers published in Volume 15 of the journal. The decision was made by the committee based on an evaluation of the originality and significance of the papers and their number of citations and downloads.

The prizes were as follows:

  • CHF 400;
  • An electronic certificate;
  • A voucher to waive the Article Processing Charge (APC) for one submission to the journal (subject to peer review)—valid for one year.

We would like to congratulate the following winners:
“Tetraquarks and Pentaquarks from Quark Model Perspective”
by Hongxia Huang, Chengrong Deng, Xuejie Liu, Yue Tan and Jialun Ping
Symmetry 2023, 15(7), 1298; https://doi.org/10.3390/sym15071298

“A Deep Learning Approach to Extracting Nuclear Matter Properties from Neutron Star Observations”
by Plamen G. Krastev
Symmetry 2023, 15(5), 1123; https://doi.org/10.3390/sym15051123

“Jacobi and Lyapunov Stability Analysis of Circular Geodesics around a Spherically Symmetric Dilaton Black Hole”
by Cristina Blaga, Paul Blaga and Tiberiu Harko
Symmetry 2023, 15(2), 329; https://doi.org/10.3390/sym15020329

“Metamaterial with Tunable Positive and Negative Hygrothermal Expansion Inspired by a Four-Fold Symmetrical Islamic Motif”
by Teik-Cheng Lim
Symmetry 2023, 15(2), 462; https://doi.org/10.3390/sym15020462

The announcement can be found at the following website: https://www.mdpi.com/journal/symmetry/awards/2707.

Please join us in congratulating the winners of the Symmetry Best Paper Award. We would also like to take this opportunity to thank all of the authors for their continued support.

Symmetry Editorial Office

31 July 2025
MDPI INSIGHTS: The CEO's Letter #25 - 8,000 Staff Worldwide, Korea Visit, 100,000 Preprints, Malaysia Roundtable, Canada Consortium Deal

Welcome to the MDPI Insights: The CEO's Letter.

In these monthly letters, I will showcase two key aspects of our work at MDPI: our commitment to empowering researchers and our determination to facilitating open scientific exchange.


Opening Thoughts

Talent Drives Our Progress

For the first time in MDPI’s history, we now have over 8,000 colleagues across the company. I would like to take a moment to celebrate this milestone and acknowledge the driving force behind our growth and success: our people.

As the world’s leading fully open access publisher, MDPI has grown thanks to the dedication, talent, and teamwork of colleagues across the company. Already halfway through 2025, we’ve welcomed nearly 2,000 new colleagues. 

“Our achievements are also about the people behind them”

We now manage over 475 journals, with 298 receiving an Impact Factor, and hundreds more indexed in major databases, including 343 in Scopus, and 92 by PubMed. As the reach and impact of our journals continues to grow, so does the need for dedicated and qualified teams to support that growth. Thus, attracting and retaining exceptional talent remains a cornerstone of our success.

Our achievements are not just about the results of journal expansion, however: they’re about the people behind them. From our hardworking editors to our meticulous English editing and production teams – from our journal relationship specialists, public relations, marketing and communications professionals to our conference teams and the project teams behind Preprints, Scilit, SciProfiles, JAMS and more. Our success reflects the work of thousands of people showing up each day, taking pride in their work, and committed to excellence and service.

What we’re doing to support talent:

  • Investing in onboarding and training to help new colleagues feel welcomed and empowered to thrive.
  • Creating clearer career paths across all functions, from editorial to communications and beyond.
  • Launching mentorship programs and internal knowledge-sharing sessions to promote growth and collaboration.
  • Evolving our recognition and rewards programs to better celebrate your contributions.
  • Expanding our training systems and platforms.

MDPI’s in-house training department offers over 215 training courses, covering topics from editorial development to cross-cultural collaboration. In 2024 alone, we had 44 full-time trainers and 196 part-time training assistants supporting the learning and development needs of colleagues worldwide. These efforts ensure our teams are equipped with the skills and confidence to grow professionally and contribute meaningfully.

Over two-thirds of our workforce is editorial, and of our more than 5,400 editors, 87% hold a Master’s degree and 6% a PhD. Their collective contributions are central to delivering a high-quality publishing experience and supporting global academic communication.

As we celebrate this milestone, we also aim to continue on a path of steady and sustainable growth, one that balances journal expansion with investment in people, outreach, processes, and innovation. Together, we are shaping the future of open access and academic publishing. Thank you for your hard work, your ideas, and your commitment to serving the global research community.

Let’s continue working together to create a culture where great talent grows and every colleague feels valued.

Impactful Research

Visiting South Korea: Building Connections and Supporting the MDPI Seoul Office

In July, I had the opportunity to visit our team in Seoul and engage directly with academic communities in South Korea. The visit focused on deepening MDPI’s relationships with local universities, institutions, and partners, and supporting the great work of our colleagues at the MDPI Seoul office.

Korea Association of Private University Libraries (KAPUL) Conference

A highlight of the visit was our participation in the Korea Association of Private University Libraries (KAPUL) Conference, where we presented to over 100 academic librarians. I delivered a keynote speech titled “The Evolving Publishing Landscape: Open Access and Beyond,” while my colleague Dr. Jisuk Kang (Public Affairs Specialist) shared insights in her presentation, “Inside MDPI: Editorial Practices & Research Integrity.”

Facts & Figures: South Korea

  • South Korea is MDPI’s sixth-largest publishing country by article volume (over 90,000 MDPI papers published to date).
  • In 2024, Korea ranked 16th globally by total publications, and 6th (among these top 20 countries) by citation impact.
  • 52% of Korean publications in 2024 were OA – and 73% of those were Gold OA.
  • MDPI published about 20% of all OA papers from Korea in 2024.
  • Over 2,000 active Editorial Board Members from South Korea contribute to MDPI journals, with 11 Section Editors-in-Chief.
  • We currently have 11 Institutional Open Access Program agreements and two society partnerships in Korea:
    • Korean Society of Pharmaceutical Sciences and Technology (with MDPI journal Pharmaceutics)
    • Korean Tribology Society (with MDPI journal Coatings)

MDPI Seoul Office and the First Korea Salon

Our Seoul office serves as a regional hub for marketing, communications, and community engagement. It continues to grow in size and influence, prioritizing supporting scholar visits, conference sponsorships, and outreach events such as the recent MDPI Korea Salon.

The inaugural Salon, themed “Exploring Research Trends in Medical Publishing, Ethics, and AI,” brought together over 20 scholars and Editorial Board members serving MDPI journals.

Thank you to our guest speakers including Professors Young-Joon Surh of Seoul National University, Kwang-Sig Lee of Korea University, and Jin-Won Noh of Yonsei University who presented on the landscape of medicine in South Korea and across the globe. The Salon also included presentations from MDPI colleagues on Open Access, ethics, and how the IOAP can support researchers in this field.

“Our Seoul office continues to grow in size and influence”

Looking Ahead

MDPI is already the leading OA publisher in South Korea, yet challenges and misconceptions around OA and APCs remain. Visits like this one, along with the ongoing efforts of our Seoul office, are important to building understanding, trust, and long-term relationships with the local academic community.

A big thank-you to our colleagues in Seoul for their warm hospitality, professionalism, and energy! Our new office is well situated, staffed, and ready to grow. This visit marked an important step forward in our continued mission to support global research communities and advance Open Science.

Inside MDPI

Preprints.org Reaches 100,000 Preprints: A Major Milestone for MDPI and Open Science

In case you missed it, Preprints.org recently surpassed 100,000 preprints posted. This is a major milestone for our platform and one worth celebrating.

Preprints are a key pillar of the Open Science movement, which promotes transparency, equity, and faster knowledge-sharing through initiatives such as Open Access, Open Data, Open Source, and Open Peer Review. The benefits of Open Science extend beyond researchers, as they support funders, educators, policymakers, and the public in advancing discovery and innovation.

What is behind the 100,000 preprints milestone?

Since its launch in 2016, Preprints.org has grown into one of the world’s leading preprint platforms, now ranked fifth globally by publication volume.

More than 350,000 researchers have contributed, helping shape this dynamic and collaborative space for sharing early-stage research across all disciplines.

Read the full announcement here:
https://www.mdpi.com/about/announcements/12202

“Preprints.org has grown into one of the world’s leading preprint platforms”

Some quick facts worth noting:

  • About 56% of the preprints on Preprints.org are later published in peer-reviewed journals.
  • The platform is now indexed in Web of Science (Preprint Citation Index), Europe PMC, and Crossref, helping improve visibility and trust in the preprints shared.
  • Recent upgrades – including a revamped website, new features such as search subscriptions, curated reading lists, and community feedback tools (PREreview) – show our commitment to developing Preprints.org in line with researchers’ needs.

This growth and progress would not be possible without the dedication of the Preprints.org team, our Advisory Board members, screeners, and colleagues across MDPI who support the platform’s development. This milestone is a reminder of our shared mission: to accelerate scientific communication and build a more open, transparent, and inclusive research ecosystem.

I’m excited to see what’s ahead as we approach Preprints.org’s 10-year anniversary in 2026!

Coming Together for Science

Malaysia Media Roundtable: Educating on Open Access and MDPI’s Presence in Southeast Asia

At the end of June, I had the opportunity to participate in a strategic media roundtable in Kuala Lumpur, focused on raising awareness about the importance of Open Access (OA) and on MDPI’s growing presence in Southeast Asia.

We welcomed five Malaysian media outlets for an engaging private session that included presentations and open discussion.

I gave an overview of the benefits of Open Access, MDPI’s global developments, and our collaborations in Malaysia.

My colleague Yu Nwe Soe (Public Relations Specialist), presented on our editorial process, helping to clarify how MDPI supports authors and maintains research quality.

We were also joined by two local Editorial Board Members (EBMs) who offered first-hand insights into their experiences working with MDPI and how OA has shaped their publishing choices.

The discussion covered a range of questions from the press, from OA publishing models to editorial standards, and highlighted MDPI’s unique contribution to accelerating scientific communication in the region.

As the leading fully OA publisher, we see it as our responsibility to continue educating research communities and the broader public on the impact of OA, especially in emerging and high-growth academic markets.

Spotlight on Malaysia

Malaysia continues to rise as a regional research hub, with five universities ranked in the global top 200 and 11 subjects in the global top 50. In 2024, Malaysia ranked 2nd in Southeast Asia in total publication output, 10th in Asia, and 25th globally.

MDPI’s presence in Malaysia:

  • Over 21,000 research articles published to date from Malaysian institutions
  • More than 1,100 articles published in 2024 alone
  • In the period 2020–2024, 54% of Malaysia’s total publications were OA
  • 36 EBMs from Malaysia, across 27 MDPI journals
  • Around 100 conferences sponsored in Malaysia in the past five years
  • MDPI is hosting the 2nd International Conference on AI Sensors and Transducers in Kuala Lumpur (29 July- 3 August 2025)

Media Coverage & Editorial Voices

Following the roundtable, we saw positive coverage across several local outlets, with articles highlighting MDPI’s role in empowering Malaysian researchers. Notable pieces included:

Our local EBMs also shared their perspectives:

Prof. Denny Ng Kok Sum (Sunway University, EBM of MDPI journal Processes) and Prof. Lee (EBM of MDPI journal Bacteria) share their experiences with MDPI and the role Open Access plays in their publication decisions.

“We see it as our responsibility to continue educating research communities on the impact of OA”

“I didn’t want my work stuck behind a paywall.”
— Prof. Denny Ng Kok Sum, Sunway University, Processes Editorial Board Member

“Open Access opens doors for collaboration and visibility, especially in fast-developing regions like ours.”
— Prof. Lee, Bacteria Editorial Board Member

This roundtable marked another step in building trust, understanding, and collaboration in Southeast Asia. A big thank-you to the MDPI Malaysia team and all those who contributed to the event’s success.

Closing Thoughts

MDPI Signs First North American Agreement with Canadian Consortium

We are proud to announce a major milestone for MDPI Canada and an important step forward for OA in North America.

In July, our Toronto office finalized MDPI’s first North American consortium agreement with the Federal Science Libraries Network (FSLN). This is a significant achievement that strengthens our expansion in Canada and reinforces our global commitment to supporting Open Science.

This two-year agreement gives Canadian federal agencies access to MDPI’s IOAP, including discounted article processing charges for affiliated researchers across our portfolio of over 475 OA journals. It lowers barriers for Canadian scientists to share their work more openly and reach a global audience.


Ryan Siu, Institutional Partnerships Manager at MDPI.

“The Open Science landscape in Canada is rapidly evolving, with the Tri-Agency Open Access Policy set for renewal by the end of 2025. This reflects ongoing efforts to foster greater scientific transparency and accessibility at a national policy level,” says Ryan Siu, Institutional Partnerships Manager at MDPI.

“Our new agreement with FSLN represents our shared commitment to further these efforts and foster wider readership. By aligning with these initiatives, we make progress towards research that’s both inclusive and impactful, benefiting local and global communities alike.”

Participating FSLN institutions include:

  • Agriculture and Agri-Food Canada
  • Environment and Climate Change Canada
  • Health Canada
  • National Research Council Canada
  • Natural Resources Canada

By partnering with some of Canada’s largest science-based agencies, we reaffirm our goal of advancing OA across continents. We look forward to developing our support for Canadian researchers and continuing to drive progress in Open Science across North America and beyond.

Stefan Tochev
Chief Executive Officer
MDPI AG

30 July 2025
Recruiting Early Career Editorial Board Members for Symmetry

In order to further enhance the international influence of Symmetry (ISSN: 2073-8994), promote the academic exchange of young scientists, and support the Editorial Board with additional expertise, the journal would like to invite interested and eligible early career researchers to apply for Early Career Editorial Board (ECEB) membership.

Recruitment:
A total of 50 Early Career Editorial Board Members will be recruited; the position can be held for two years, with the possibility of renewal for a second term.

Application eligibility:

  • Candidates must have completed their doctorate/PhD degree in the past 10 years (considering exceptions for career interruptions, including medical and family leave);
  • There must be evidence that they have made significant research achievements in the field of computers, mathematics, physics, chemistry, life sciences, engineering and materials;
  • Willingness to dedicate their time to the development of the journal with enthusiasm;
  • Active and engaged in their community (e.g., experienced at presenting at academic conferences or involved in professional organizations).

Benefits of an Early Career Editorial Board Member:

  • A certificate of appointment as an Early Career Editorial Board Member will be provided;
  • The achievements of Early Career Editorial Board Members are publicized on the journal’s media platforms to improve their academic visibility;
  • There is an opportunity to be promoted to Editorial Board Member based on contributions;
  • The journal will regularly acknowledge those who participate in the peer-review process on the journal’s website;
  • There will be opportunities to participate in, or host annual meetings and online seminars organized by the Editor-in-Chief and Editorial Board Members.

Responsibilities of an Early Career Editorial Board Member:

  • Publicizing and promoting the journal at academic conferences and among peers;
  • Selecting high-quality articles and preparing bilingual media content for promotion;
  • Reviewing at least four manuscripts per year;
  • Providing input on any new initiatives for the journal’s development;
  • Garnering submissions from local and overseas world-leading scientists in relevant research fields.

Applications:
Please fill in the application form here.

Please send the application form and your academic resume to symmetry@mdpi.com with the subject of “Symmetry Early Career Editorial Board Application + Name + Institute + Research Expertise”.

Application deadline: 31 March 2026.

Selection process and announcement:
The selection process: initial screening of application materials → selection by the Editor-in-Chief and Editorial Board Members → email notification → issuing a certificate of appointment.

The selection process will be completed within one month of the application deadline, and the results will be announced on the journal’s website.

24 July 2025
MDPI Webinar | 7th MDPI Guest Editor Club 2025, 30 July 2025


MDPI would like to invite all Guest Editors, as esteemed experts in their respective disciplines, to participate in the 7th MDPI Guest Editor Club. This forum intends to highlight exciting topics in a comprehensive yet efficient manner to allow Guest Editors from all over the world to present their experiences and discuss their achievements.

The Guest Editor Club will bring together a worldwide group of multi-disciplinary Guest Editors to present and exchange their breakthrough ideas which have been reported in MDPI’s Special Issues. We have, therefore, put together this platform to facilitate your interactions with the journal and lead you through the most important aspects of the role and what you can expect from the process of editing a Special Issue. We are pleased to provide an excellent opportunity for all our Guest Editors to propose and develop new approaches, exchange perspectives, and encourage new lines of research.

We will record the presentations, with prior consent obtained from the lecturers, and upload them to our online database. We will continue to build this database with brief introductions and summaries of topics and will open an online discussion group for each GE. We hope that this event will be of interest to you, and we welcome you to join us at this forum.

We are very much looking forward to seeing you at the 7th MDPI Guest Editor Club 2025. Please find below an up-to-date outline of the presenters.

Date: 30 July 2025 at 9:00 a.m. CEST | 9:00 p.m. EDT | 3:00 p.m. CST Asia
Webinar ID: 889 2623 3305

Register now for free!

Program:

Speaker/Presentation

Time in CEST

Time in CST Asia

MDPI Introduction

9:00–9:10 a.m.

3:00–3:10 p.m.

Dr. David Campbell
The Process of Designing and Implementing a Conceptually Driving Special Issue

9:10–9:30 a.m.

3:10–3:30 p.m.

Dr. Roberto Teggi
To Be a Guest Editor: Tasks and Pitfalls

9:30–9:50 a.m.

3:30–3:50 p.m.

Dr. Konstantin Zioutas
From The Dark Universe: The Harbinger of a Major Discovery to Cross-Disciplinary Footprints in Astro-Particle Physics

9:50–10:10 a.m.

3:50–4:10 p.m.

Ms. Mary O'Sullivan
Introduction to Special Issue Management

10:10–10.30 a.m.

4:10–4.30 p.m.

Q&A Session

10:30–10:55 a.m.

4:30–4:55 p.m.

Closing of Webinar

10:55–11.00 a.m.

4:55–5.00 p.m.

After registering, you will receive a confirmation email containing information on how to join the webinar. Registrations using academic institutional email addresses will be prioritized.

Unable to attend? Register anyway and we will inform you when the recording is available.

Keynote Speakers:

  • Dr. David Campbell, University of Vienna, Vienna, Austria;
  • Dr. Roberto Teggi, San Raffaele Scientific Institute, Milano, Italy;
  • Dr. Konstantin Zioutas, University of Patras, Patras, Greece;
  • Ms. Mary O'Sullivan, Journal Relations Specialist, MDPI.

23 July 2025
Meet Us at the Conference on Complex Systems 2025, 1–5 September 2025, Siena, Italy


MDPI will be attending the Conference on Complex Systems 2025 held in Siena, Italy, which will take place from 1 to 5 September 2025. This is the flagship annual conference for the complex systems research community, operating within the framework of the Complex Systems Society. The purpose of the Society is to promote the development of all aspects of complex systems science among the international scientific community as a whole.

The following MDPI journals will be represented:

If you are attending the conference, please feel free to visit our booth. Our delegates look forward to meeting you in person and answering any questions that you may have. For more information about the conference, please visit the following link: https://ccs25.cssociety.org/.

23 July 2025
Join Us at the 2nd Physical & Mathematical Sciences Summit—Quantum Artificial Intelligence, 22–24 August 2025, Haikou, China


The MDPI (China) Physical & Mathematical Sciences Committee was officially established in 2024, with Prof. Chang-Pu Sun, an Academician of the Chinese Academy of Sciences, serving as its chairman. The Committee is dedicated to providing scientific strategic guidance and advice to MDPI and promoting cooperation and academic exchanges with the scholarly community. The first MDPI Summit on Physical and Mathematical Sciences was successfully held in 2024, and the second summit will focus on the cutting-edge interdisciplinary field of quantum computing combined with artificial intelligence (AI), while further expanding academic discussions.

As the core of next-generation computing technology, quantum computing is developing rapidly and is expected to trigger a new round of quantum technological revolution. Its integration with AI has given rise to entirely new fields. Quantum circuit models and the quantization of classical algorithms can efficiently process large-scale data, demonstrating broad application prospects in various sectors, including production, daily life, and economic development. At this summit, we will conduct in-depth discussions—through keynote speeches and oral presentations—on the integration of quantum computing with machine learning algorithms, the application of quantum computing in AI, and the technical challenges and development trends faced by quantum artificial intelligence. We sincerely invite all scholars from relevant fields to participate in the summit.

Date: 22–24 August 2025 (registration on 22nd August)
Location: Hainan University (Haidian Campus), Haikou, China
Organizations:

  • Organizer: MDPI;
  • Co-Organizers:
    • Center for Theoretical Physics, Hainan University;
    • Graduate School of China Academy of Engineering Physics (GSCAEP).

Website: https://sciforum.net/event/PMSS2025
Registration: https://www.surveymonkey.com/r/ZG7PY7L

Conference chair: Prof. Dr. Chang-Pu Sun, Graduate School of China Academy of Engineering Physics, China.

Executive chairs: Prof. Dr. Qingyu Cai, Center for Theoretical Physics, Hainan University, and Dr. Ying Li, Graduate School of China Academy of Engineering Physics, China.

Science committee:

  • Prof. Dr. Jiping Zhang, School of Mathematical Sciences, Peking University, China;
  • Prof. Dr. Gang Zhao, National Astronomical Observatories, Chinese Academy of Sciences, China;
  • Prof. Dr. Bingsong Zou, Department of Physics, Tsinghua University, China;  
  • Prof. Dr. Wenhui Duan, Department of Physics, Tsinghua University, China;  
  • Prof. Dr. Yaxiang Yuan, Academy of Mathematics and Systems Science, China.

To learn more about the conference and registration details, please click on the official website below, or register directly. We look forward to your participation.

If you have any questions, please contact MDPI Marketing Department.

8 July 2025
MDPI’s Journal Cluster of Mathematics and Its Applications


Mathematics plays a pivotal role in all academic disciplines. From a methodological standpoint, research depends heavily on statistical testing and modeling. From a technical standpoint, math is critical in applied disciplines, such as engineering and architecture. From a theoretical standpoint, the rich history of logic and philosophy of mathematics has built the foundation for all scientific inquiries.

MDPI’s journal cluster of mathematics and its applications promotes the open exchange of contemporary ideas and developments in mathematical science. MDPI offers journals with broader scopes and readership, such as Mathematics (IF 2.2), as well as more specialized outlets for subdisciplines in pure and applied mathematics. Together, the aim is to provide more options to authors of varying situations.

The nine member journals in the cluster are the following:

  • AppliedMath (ISSN: 2673-9909) focuses on studies that apply mathematical concepts, theories and methods to other subjects, such as physics, engineering, medicine, chemistry, biology, information science, energy, environmental science, finance, business, computer science, industry and social sciences. AppliedMath is led by Editor-in-Chief Prof. Dr. Takayuki Hibi (Osaka University, Japan);
  • Axioms (ISSN: 2075-1680) focuses on studies related to mathematics, mathematical logic and mathematical physics. Axioms is led by Editor-in-Chief Prof. Dr. Humberto Bustince (Public University of Navarra, Spain);
  • Computation (ISSN: 2079-3197) focuses on computational science and interdisciplinary applications, including computational engineering, computational chemistry, computational biology, and computational social science. Computation is led by Editor-in-Chief Prof. Dr. Ali Cemal Benim (Düsseldorf University of Applied Sciences, Germany);
  • Fractal and Fractional (ISSN: 2504-3110) focuses on fractals and fractional calculus and their applications in different fields of science and engineering. Fractal and Fractional is led by Editor-in-Chief Prof. Dr. Carlo Cattani (University of Tuscia, Italy);
  • Geometry (ISSN: 3042-402X) focuses on the diverse theories and applications of geometry. Areas of special interest include Euclidean geometry, differential geometry, algebraic geometry, complex geometry, discrete geometry, computational geometry, geometric group theory, geometric analysis, and convex geometry. Geometry is led by Editor-in-Chief Prof. Dr. Yang-Hui He (Royal Institution, UK);
  • International Journal of Topology (IJT, ISSN: 2813-9542) focuses on differential topology, algebraic topology, manifolds, geometry, and related applications. Its purpose is to provide a platform for research and development in various fields of topology, expand topology to a wider range of applications, and promote the development of mathematics. International Journal of Topology is led by Editor-in-Chief Prof. Dr. Michel Planat (Université de Franche-Comté, France);
  • Logics (ISSN: 2813-0405) focuses on all aspects of logic, including logical systems, methods and theories, mathematical logic, computational logic, philosophical logic and the history of philosophy of logic and mathematics. The journal also encompasses applications of logic to the sciences, such as computer science, cognitive science, and linguistics. Logics is led by Editor-in-Chief Prof. Dr. Valentin Goranko (Stockholm University, Sweden);
  • Mathematics (ISSN: 2227-7390) focuses on studies related to mathematical sciences, including all areas of pure and applied mathematics. Mathematics is led by Editor-in-Chief Prof. Dr. Francisco Chiclana (De Montfort University, UK);
  • Symmetry (ISSN: 2073-8994) focuses on research on symmetry/asymmetry phenomena wherever they occur in all aspects of natural sciences. Symmetry is led by Editor-in-Chief Prof. Dr. Sergei Odintsov (Institute of Space Sciences, Spain). Meanwhile, Prof. Dr. Ronggen Cai (Ningbo University, China) and Prof. Dr. Jiping Zhang (Peking University), Academicians of CAS, are serving as Honorary Editors-in-Chief.
Journals Launch Year Impact Factor (2024) CiteScore (2024) First Decision (Median Days) Acceptance to Publication (Median Days) APC (CHF)
2021 0.7 1.1 23.5 6.9 1200
2012 1.6 / 21.6 2.8 2400
2013 1.9 4.1 16.7 5.6 1800
2017 3.3 6.0 19.9 2.7 2700
2024 / / 19 4 1000
2024 / / 19 4 1000
2023 / / / / 1000
2013 2.2 4.6 18.4 2.4 2600
2009 2.2 5.3 17.1 2.8 2400

MDPI’s mission and values:

As a pioneer of academic open access publishing, MDPI has been serving the scientific community since 1996. Our aim is to foster scientific exchange in all forms across all disciplines. MDPI's guidelines for disseminating open science are based on the following values and guiding principles:

  • Open Access—All of our content is published in open access and distributed under a Creative Commons License, providing free access to science and the latest research, allowing articles to be freely shared and content to be re-used with proper attribution;
  • Timeliness and Efficiency—Publishing the latest research through thorough editorial work, ensuring a first decision is provided to authors in under 32 days and papers are published within 7-10 days upon acceptance;
  • Simplicity—Offering user-friendly tools and services in one place to enhance the efficiency of our editorial process;
  • High-Quality Service—Supporting scholars and their work by providing a range of options such as journal publication at mdpi.com, early publication at preprints.org, and conferences on sciforum.net to make a positive impact on research;
  • Flexibility—Adapting and developing new tools and services to meet the changing needs of the research community, driven by feedback from authors, editors, and readers;
  • Rooted in Sustainability—Ensuring the long-term preservation of published papers and supporting the future of science through partnerships, sponsorships, and awards.

By adhering to these values and principles, MDPI remains committed to advancing scientific knowledge and promoting open science practices.

Selected Topics:

Selected articles:

AppliedMath
“Some Comments about the p-Generalized Negative Binomial (NBp) Model”

Geometry
“Rigidity of Holomorphically Projective Mappings of Kähler and Hyperbolic Kähler Spaces with Finite Complete Geodesics”

International Journal of Topology
“Persistent Homology on a Lattice of Multigraphs”

Logics
“Logics for Epistemic Actions: Completeness, Decidability, Expressivity”

Mathematics
“Fractional Differential Equations with the General Fractional Derivatives of Arbitrary Order in the Riemann–Liouville Sense”

Computation
“Computational Modelling and Simulation of Scaffolds for Bone Tissue Engineering”

Axioms
“Integrable Couplings and Two-Dimensional Unital Algebras”

Symmetry
“Uniform in Number of Neighbor Consistency and Weak Convergence of k-Nearest Neighbor Single Index Conditional Processes and k-Nearest Neighbor Single Index Conditional U-Processes Involving Functional Mixing Data”

Fractal and Fractional
“An Overview of Mathematical Modelling in Cancer Research: Fractional Calculus as Modelling Tool”

4 July 2025
MDPI’s Newly Launched Journals in June 2025

Six new journals covering a range of subjects launched their inaugural issues in June 2025. We are excited to be able to share with you the newest research rooted in the value of open access. We are pleased to present the latest research and to make it accessible to all.

We extend our sincere thanks to all the Editorial Board Members for their commitment and expertise. Each journal is dedicated to upholding strong editorial standards through a thorough peer review process, ensuring impactful open access scholarship.

Please feel free to browse and discover more about the new journals below.

Journal Founding Editor-in-Chief Journal Topics (Selected)
Prof. Dr. Chang-Pu Sun,
China Academy of Engineering Physics, Beijing, China; Computational Science Research Center, China
Editorial | View inaugural issue		 quantum information and phenomena; condensed matter physics and statistical physics; atomic, molecular, and optical physics; computational physics and mathematical methods
View journal scope | Submit an article
Prof. Dr. Hualiang Lin,
Sun Yat-sen University, China;
Prof. Dr. Jose L. Domingo,
Universitat Rovira i Virgili, Spain
Editorial | View inaugural issue		 green and organic food; green infrastructures; green exercise; environmental impact of the healthcare sector; effects of climate change on human health |
View journal scope | Submit an article
Prof. Dr. Francesco Veglio,
University of L’Aquila, Italy
Editorial | View inaugural issue		 ultra-pure substances; water purification; air purification; gas purification; inorganic chemical purification; purification technologies
View journal scope | Submit an article
Prof. Dr. Junxing Zheng,
Huazhong University of Science and Technology, China
Editorial | View inaugural issue		 computer-aided design and engineering; artificial intelligence and machine learning; building information modeling (BIM) and digital twins; robotics and automation in construction; smart sensors and Internet of Things (IoT); intelligent control systems and facilities management
View journal scope | Submit an article
Prof. Dr. Assunta Di Vaio, University of Naples Parthenope, Italy
Editorial | View inaugural issue		 sustainability, managerial, and biodiversity accounting; carbon management accounting; corporate social responsibility; artificial intelligence and disclosure
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Prof. Dr. Changjun Liu,
Sichuan University, China
Editorial | View inaugural issue		 bioeffects of electromagnetic waves; electromagnetic science and engineering; microwave, millimeter-wave, and terahertz technologies; metamaterials and metasurfaces; communication, sensing, and networks; energy, power, and sustainable applications; quantum and emerging technologies; artificial intelligence and advanced fabrication
View journal scope | Submit an article
We wish to thank everyone who has supported the development of open access publishing. If you are interested in launching a new open access journal with us, you are welcome to send an application here.

2 July 2025
MDPI INSIGHTS: The CEO's Letter #24 - 2024 Impact Factor & CiteScore, MDPI Summits France & USA, Tu Youyou Award

Welcome to the MDPI Insights: The CEO's Letter.

In these monthly letters, I will showcase two key aspects of our work at MDPI: our commitment to empowering researchers and our determination to facilitating open scientific exchange.


Opening Thoughts

MDPI’s 2024 Impact Factor Highlights

For those of our readers who are new to academic publishing, you may have heard some news in June around the Impact Factor release. Every year, typically in June, Clarivate releases its annual Journal Citation Reports (JCR), which include Journal Impact Factors (JIF). This metric is widely used in academic publishing to reflect the average number of citations received by recent articles in each journal.

While Impact Factor is just one of many indicators of journal influence, it remains a major milestone for authors, editors, and publishers. It’s used to assess journal visibility, researcher recognition, and scholarly reach. Throughout our international meetings and events, it’s clear that the Impact Factor is something many of our authors and editorial board members care about, as it can influence where they choose to submit an article and the funding they receive for their research.

“These results reflect the trust that the scholarly community places in MDPI”

MDPI’s 2024 Impact Factor Highlights

  • 298 MDPI journals received a Journal Impact Factor.
  • 60 journals earned their first-ever Impact Factor
    • To put this in perspective: MDPI’s 60 new journal acceptances into the Web of Science was the second highest number of any publisher in 2024, behind Elsevier and ahead of Springer Nature. Our 87% acceptance rate for journals submitted to Web of Science shows the strength of our editorial process and our proven ability to develop journals aligned with Clarivate’s 24 evaluation criteria.
    • Notably, Textiles, Mathematics, International Journal of Neonatal Screening, Smart Cities, Systems, and Pharmaceutics ranked in the top 10% in their respective categories, highlighting their growing influence and prestige within their academic fields. This shows that high-quality indexing goes beyond visibility; it upholds credibility and trust.
  • 193 MDPI journals are now ranked in the top 50% (Q1/Q2) of their subject categories.
    • What does this mean, and why is it important? Journals are ranked by quartiles within their field, based on their Impact Factor. Q1 represents the top 25% of journals in their category, Q2 the next 25%, and so on. Being in Q1 or Q2 shows that a journal is performing well relative to other journals in its category. Authors and institutions often look at quartile rankings when choosing where to publish – it’s an important indicator of visibility and recognition, within its respective category.
  • 116 of our previously ranked journals increased their Impact Factor.
  • 14 MDPI journals achieved an Impact Factor of 5.0 or higher, suggesting a high degree of influence and visibility.

These results reflect our staff's hard work: from our editorial and production teams to our indexing, communications, and data teams, and beyond. This also reflects the trust that the scholarly community places in MDPI, reinforcing the message that when researchers publish with MDPI, they publish with impact.

Open Access with Impact

As the leading fully open access publisher, our journals have received a total of 18.4 million citations in the Web of Science by the end of 2024, reflecting the growing reach and engagement of research published with MDPI. We are committed to making scientific research freely accessible to everyone, everywhere. With the support of more than 4.2 million contributing authors, we’re proud to support the global shift toward open access.

Further Reading

If you’d like to better understand how journals get indexed and why Impact Factors matter, please read this recent interview with Dr. Constanze Schelhorn (Head of Indexing). It gives you a behind-the-scenes look at the role our indexing team plays in supporting journal indexing and visibility.

You can also read our official news announcement shared last week: MDPI Journals in the 2024 Journal Citation Reports.

Thank you to everyone, from our authors and reviewers to our editors and internal teams, who contributed to the progress of our journal indexing in 2024. We’re continuing to build journals that are recognized and trusted across disciplines.

Impactful Research

MDPI Journals See Continued Growth in 2024 CiteScore Results

Continuing our indexing updates, I’m pleased to share that MDPI has achieved strong results in the latest CiteScore metrics, released on 5 June by Scopus. These results reflect the collective efforts of our editors, reviewers, authors, and internal teams, with their dedication to quality and visibility in scientific publishing. You can read the full announcement here.

2024 Highlights:

  • 322 MDPI journals received a CiteScore (up from 274 last year).
  • 283 journals (88%) are ranked in Q1 or Q2 of their subject categories.
  • 237 journals (85%) saw an increase in their CiteScore compared to last year.
  • 48 journals received a CiteScore for the first time.
  • 39 journals are now placed in the top 10% of their subject areas.

“This growth highlights our commitment to supporting open, trusted science”

What is CiteScore and how is it measured?

CiteScore metrics are developed by Elsevier as an alternative to the Impact Factor. They measure the citation impact of journals and can be accessed freely on Scopus. The metric represents the yearly average number of citations to recent articles published in a journal. If you’re interested in learning more about citation metrics and how we use them, check out this blog post.

Why is this important?

These results show the growing recognition for, and impact of, MDPI journals across disciplines. CiteScore rankings help researchers, institutions, and funders assess where high-quality work is being published. This growth improves our journals’ positioning in the publishing landscape and highlights our commitment to supporting open, trusted science.

Inside MDPI

Highlights from the MDPI USA Summit in Boston (5–6 June)

With several Summits already behind us, I think this is a good time to reflect on the purpose of these Summits.

Why do we organize MDPI Summits?

These one-and-a-half-day, invite-only gatherings are designed to improve our relationships with Chief Editors who lead our journals and are respected voices in their fields. The Summits aim to:

  1. Share MDPI’s values, achievements, editorial practices, and local market collaborations.
  2. Collect feedback on MDPI operations and journal practices.
  3. Empower Chief Editors to confidently represent MDPI beyond the Summit.

While Chief Editors know their journals well, these events help them better understand MDPI. We want them to be ambassadors for our brand. The aim is for them to walk away informed, engaged, and equipped to share positively about MDPI.

About the Boston Summit

Held on 5–6 June, our first USA Summit gathered over 25 Chief Editors to learn more about MDPI’s activities and collaborations in the USA. The program included presentations, Q&A, and a panel discussion.

Agenda Highlights:

Moderated by Summer Huggard (Operations Manager [Toronto], MDPI), the program featured:

  • MDPI Overview and USA Collaboration – Stefan Tochev (CEO, MDPI)
  • AI in Publishing and MDPI's Actions – Feichi Lu (Junior Data Scientist, MDPI)
  • MDPI Editorial Process and Research Integrity – Dr. Giulia Stefenelli (Scientific Communications Lead, MDPI)
  • Panel Discussion – Stefan, Feichi, Giulia, Claudia
  • Society Partnerships – Dr. Clàudia Aunós (Society Partnerships Senior Manager, MDPI)
  • Voice of the Customer and Closing Remarks – Stefan Tochev (CEO, MDPI)

MDPI & the USA: Facts and Figures

  • With over 216,000 publications, the USA is MDPI’s second-largest contributor after China.
  • In 2024, the USA ranked 2nd in total submissions and 2nd in total MDPI publications, with more than 28,200 publications.
  • As of 2020, the cumulative number of authors from the USA until April 2025 was 352,099.
  • As at April 2025, there are more than 12,035 active Editorial Board Members (EBMs) from the USA, with 55% having an H-index over 26.
  • Among them, 96 serve as Editors-in-Chief (EiC) and 218 as section-Editors-in-Chief (SEiC)
  • MDPI has more than 920 Institutional Open Access Program agreements worldwide, with over 130 from the USA.

A special thanks to our Toronto team, and everyone who worked behind the scenes to make this event run smoothly.

Coming Together for Science

Highlights from the MDPI France Summit in Paris (12–13 June)

We completed our first MDPI France Summit in Paris last week, and it was a special event. Attendees were engaged from beginning to end, remaining after hours to network and collaborate.

Why a France Summit?

We chose to host a France Summit in view of the recent challenges MDPI has faced with the National Centre for Scientific Research (CNRS). What we took away from the event is that our authors and editors very much appreciate and enjoy working with us, but we need to address the concerns raised by CNRS, around Article Processing Charges (APCs) and the funding of gold open access publications.

“Our authors and editors very much enjoy working with us”

Some of the claims made in the June 2023 interview with Alain Schuhl, the Deputy CEO for Science at the CNRS, are simply not factual. For example, they state that MDPI’s “average APC charges per article are now around the same as Springer Nature’s.” Here is the relevant passage, reproduced verbatim:

This is not accurate.

A recent preprint analysing APC data from Elsevier, Springer Nature, Wiley, PLOS, MDPI, and Frontiers (2019–2023) shows that MDPI’s average APCs remain significantly lower than those of Springer Nature and several other major publishers.

The MDPI Summits are part of our outreach and communication efforts to address misconceptions and clarify MDPI’s position as one of the most accessible and affordable major gold open access publishers in the world.

Summit Overview

Held on 12–13 June, the France Summit gathered over 20 Chief Editors to learn more about MDPI’s activities and collaborations in France. Many of these editors are influential in their institutions and professional societies. Several also have connections to CNRS, which makes this an important opportunity to clarify how we operate and build trust through open and transparent communication and hopefully turn our editors into informed advocates of MDPI.

Summit Feedback

The feedback has been very positive, with most attendees completing the post-event survey and all rating the experience as Excellent or Good. A few highlights:

  • “The whole thing was highly professional and, above all, provided quantified details that will allow us to better answer questions surrounding MDPI.”
  • “The summit was an opportunity to meet personally various people directly engaged in the organization and policies of MDPI, which made it possible to clarify some important points concerning publishing with MDPI.”
  • “Very well organized! A great opportunity to see all French MDPI partners and editors.”

Program Highlights:

Moderated by Miruna Adelina Nicolcioiu (Senior Conference Producer), the program featured:

  • MDPI Overview and France Collaboration – Stefan Tochev (CEO)
  • MDPI Editorial Process and Peer-Review Quality – Dr. Marta Colomer (Public Affairs Specialist)
  • Institutional Partnerships and Open Access Funding Models – Becky Castellon (Institutional Partnerships Manager)
  • AI in Publishing and MDPI's Actions – Daniele Raimondi (Data Scientist)
  • Publication Ethics: Global Trends – Diana Cristina Apodaritei (Research Integrity Specialist)
  • Closing Remarks – Stefan Tochev
  • Panel Discussion – Diana, Becky, Prof. Dr. Patrick Da Cost, and Stefan

MDPI & France: Facts and Figures

  • With over 51,000 publications, France is MDPI's tenth-largest contributor, and fifth largest among EU countries after Italy, Spain, Germany, and Poland.
  • As of 2020, the cumulative number of authors from France until April 2025 was 87,592.
  • As at April 2025, there are more than 2,800 active Editorial Board Members (EBMs) from France, with 59% having an H-index over 26.
  • Among them, 22 serve as Editors-in-Chief (EiC) and 61 as section-Editors-in-Chief (SEiC)
  • In 2024, IJMS, JCM, and Molecules were the top three MDPI journals in terms of submissions from French-affiliated authors.

Special thanks to our colleagues from Romanian offices for organizing this successful event.

Closing Thoughts

Richard DiMarchi and Rolf Müller Share the 2024 Tu Youyou Award

As we wrap up this month’s newsletter, I’d like to take a moment to recognize the winners of the 2024 Tu Youyou Award, presented by our journal Molecules. I am pleased to share that the 2024 Tu Youyou Award has been conferred upon Richard DiMarchi and Rolf Müller, in recognition of their significant contributions to natural products chemistry and medicinal chemistry.

I invite you to read the editorial co-authored by the Tu Youyou Award Committee, which highlights the significance of the award and the remarkable impact of the recipients’ research.

A sincere thank-you to the 2024 Award Committee for their dedication and selection process, and congratulations once again to this year’s honourees. Your work exemplifies the kind of research MDPI is proud to support and amplify.

About the Tu Youyou Award
The 2024 Tu Youyou Award includes a total monetary prize of 100,000 Swiss Francs and a medal for each recipient. Established in 2016 to honour the pioneering spirit of Nobel laureate Tu Youyou, the Tu Youyou Award is an international award recognizing exceptional scholars dedicated to the fields of natural products chemistry and medicinal chemistry.

For further information about the award and the winners, please visit the Tu Youyou Award website.
Stefan Tochev
Chief Executive Officer
MDPI AG


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