Welcome to the Journal of Grey System, a distinguished publication dedicated to the advanced study of decision sciences, applied mathematics, and statistical theories. Published by Research Information Ltd, this journal has carved out a niche within the academic community, focusing on innovative methodologies and interdisciplinary approaches that foster a deeper understanding of complex systems. Although open access options are not currently available, the journal has been recognized for its scholarly contributions, achieving impressive Scopus rankings—including a notable #47 in Decision Sciences and a 60th percentile rank in Applied Mathematics. With coverage spanning from 2008 to 2019, the Journal of Grey System remains an essential resource for researchers and practitioners aiming to enhance their knowledge in statistics, probability, and system optimization. As a result, it serves not just as a platform for academic discourse but also as a catalyst for future research endeavors in the evolving landscape of mathematical and statistical sciences.

Operations Research and Decisions is a highly accessible, peer-reviewed journal published by Wroclaw University of Science and Technology, Faculty of Management. Established in Poland, this open access journal has been disseminating cutting-edge research since 2010 and focuses on the vital intersection of operations research and decision-making processes. With an ISSN of 2081-8858 and an E-ISSN of 2391-6060, it serves as a platform for both theoretical advancements and practical applications in various fields, including management science, modeling and simulation, and statistics. Although currently categorized in the Q4 quartile in multiple relevant subject areas in 2023, the journal is committed to promoting innovative research that addresses contemporary challenges in technology and decision sciences. Researchers, professionals, and students alike will find valuable insights within its pages as they contribute to the evolving landscape of operations research. The journal is available for all interested readers, ensuring that knowledge is freely shared and disseminated across the globe.

Systems is an esteemed, peer-reviewed academic journal published by MDPI, focusing on the multifaceted fields of Computer Networks and Communications, Control and Systems Engineering, Information Systems and Management, Modeling and Simulation, and Software. Since its inception in 2013, this Open Access journal strives to disseminate high-quality research that addresses contemporary challenges in system design, analysis, and management across various disciplines. With a dynamic impact factor emerging from its Q3 ranking in several categories and notable Scopus rankings, *Systems* offers a valuable platform for academics, researchers, and industry professionals to share innovative ideas and solutions. Operating from its base in Basel, Switzerland, the journal facilitates unrestricted access to its content, ensuring that pivotal research remains available to a global audience. By fostering collaboration and knowledge exchange, *Systems* plays a crucial role in advancing the theory and application of systems thinking in today’s complex technological landscape.

International Journal of Mechanical System Dynamics, published by WILEY, is a premier open-access journal dedicated to advancing the field of mechanical engineering and control systems. Launched in 2021, this journal has rapidly established itself as a vital resource for researchers, professionals, and students by providing a platform for high-quality research and innovative methodologies in mechanical systems and dynamics. With an impact factor that reflects its significant contributions to the field, the journal is positioned in the Q2 quartiles of both the Control and Systems Engineering and Mechanical Engineering categories. Accessible online, it offers a transparent publication process and engages a global audience, making it a crucial venue for disseminating cutting-edge research findings. As of 2023, the journal boasts notable Scopus rankings, including 292nd in Mechanical Engineering and 148th in Control and Systems Engineering, positioning it favorably among its peers. With plans for continued growth through 2024, the International Journal of Mechanical System Dynamics stands at the forefront of mechanical innovation and interdisciplinary collaboration.

Health Systems is a vital journal dedicated to advancing the understanding and application of health system dynamics, innovations, and policies. Published by Taylor & Francis Ltd, this journal has established a reputation as a significant contributor in the fields encompassing Computer Science Applications, Health Informatics, and Health Policy, among others. With a Q3 category ranking in various relevant disciplines and notable percentile rankings in health policy and management sciences, Health Systems serves as a robust platform for researchers and practitioners to publish their findings and foster interdisciplinary dialogues. The journal attracts a diverse audience committed to improving health systems through empirical research and theoretical developments. It continuously evolves, reflecting contemporary challenges and innovations from 2012 to 2024, making it an indispensable resource for those invested in the future of healthcare.

Modelling and Simulation in Engineering is a pioneering open-access journal, published by HINDAWI LTD, and established in 2007. With a focus on advancing the fields of engineering, computer science applications, and modeling and simulation, this esteemed journal serves as a vital platform for researchers, professionals, and students alike. The journal has made significant strides in its academic contributions, reflected in its current categorization within the Q3 quartile in Computer Science Applications, Engineering (miscellaneous), and Modeling and Simulation as of 2023. With a Scopus ranking of 133 out of 307 in General Engineering and 183 out of 324 in Mathematics' Modeling and Simulation, it emphasizes the crucial interplay between theoretical research and practical applications. Each article published in Modelling and Simulation in Engineering undergoes a rigorous peer-review process, ensuring high-quality research dissemination. By maintaining an open-access format, the journal promotes global collaboration and accessibility, supporting the dissemination and advancement of engineering knowledge worldwide. With its headquarters located in the United States, the journal is truly positioned at the convergence of innovation and research.

The International Journal of System Dynamics Applications (ISSN: 2160-9772; E-ISSN: 2160-9799), published by IGI Global, serves as a premier platform for scholars, professionals, and students in the field of system dynamics. This journal aims to promote the advancement of theory and practice in system dynamics, providing critical insights and innovative methodologies that address complex real-world systems across various disciplines, including engineering, economics, and social sciences. Although not an open-access journal, it ensures a rigorous peer-review process, maintaining high standards of scientific integrity and quality in every published paper. With its commitment to disseminating cutting-edge research and practical applications in system dynamics, this journal plays a vital role in shaping contemporary discourse and fostering collaborative efforts within this essential field. The address for correspondence is 701 E Chocolate Ave, Ste 200, Hershey, PA 17033-1240.

The Technology Innovation Management Review is a renowned journal published by Carleton University Graphic Services, focusing on the dynamic intersection of technology and innovation management. This open-access journal, established in 2007, facilitates the dissemination of cutting-edge research in the fields of Computer Science Applications and Management of Technology and Innovation. With a commendable Q3 ranking in Computer Science Applications and a Q2 ranking in Management of Technology and Innovation for 2023, the journal positions itself as a vital resource for researchers, professionals, and students seeking to explore the latest advancements in technology innovation. The review aims to foster an interdisciplinary dialogue and disseminate insights that can propel both academic inquiry and practical applications in various industries. Based in Canada, the journal ensures that high-quality, peer-reviewed articles are readily accessible, contributing to the global conversation on technology and management. By bridging theory with practice, the Technology Innovation Management Review plays an essential role in shaping the future of innovation across disciplines.

International Journal of Simulation Modelling, ISSN 1726-4529, published by DAAAM INTERNATIONAL VIENNA, is a premier academic journal dedicated to the fields of modeling and simulation in computer science and applied mathematics. Situated in Austria and housed at the renowned TU WIEN, the journal stands out for its commitment to advancing research and dissemination of innovative simulation methodologies. With an impressive Q2 ranking in both Computer Science Applications and Modeling and Simulation categories as of 2023, it is recognized for its substantial contributions to these domains. This journal, spanning from 2005 to 2024, provides a platform for cutting-edge research that is essential for professionals, researchers, and students seeking to deepen their understanding of simulation techniques and their applications in real-world scenarios. While it is not openly accessible, its invaluable insights and research findings make it a must-read for anyone serious about the advancement of knowledge in simulation modeling.

The Japan Journal of Industrial and Applied Mathematics, published by Springer Japan KK, is a pivotal platform for disseminating cutting-edge research in the fields of applied mathematics and engineering. With an ISSN of 0916-7005 and an E-ISSN of 1868-937X, this journal has been a cornerstone in the academic community since its inception in 1991 and will continue to contribute pivotal insights through 2024. Positioned in the Q3 category for both Applied Mathematics and Miscellaneous Engineering according to 2023 rankings, it is recognized for its diverse range of topics and interdisciplinary approaches. Despite its competitive ranking, the journal fosters valuable contributions that challenge conventional methodologies and inspire innovation. Researchers, professionals, and students alike will find the journal’s contents invaluable for advancing knowledge and exploring new methodologies in industrial and applied mathematics.