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.

Operational Research is a premier academic journal published by Springer Heidelberg, focusing on the intersection of advanced computational theory, management science, and operations research. With an ISSN of 1109-2858 and an E-ISSN of 1866-1505, this respected journal serves as a key platform for the dissemination of high-quality research that enhances the understanding and application of quantitative methods across various fields, including technology management, simulation modeling, and statistical analysis. With its impressive performance evidenced by a Q2 ranking in multiple categories such as Computational Theory and Mathematics and Management Science, Operational Research occupies a critical role in the knowledge landscape, reflecting its 88th percentile ranking in decision sciences and numerical analysis per Scopus metrics. While currently not open access, it continues to facilitate the advancement of its disciplines through rigorous peer-review, with a commitment to publishing relevant, impactful studies from 2009 through to 2024. Researchers, professionals, and students alike will find this journal an invaluable resource for staying abreast of significant advancements in operational research methodologies and applications.

INFORMS JOURNAL ON COMPUTING, published by INFORMS, stands as a quintessential platform for disseminating cutting-edge research and innovative methodologies in the realms of computing, information systems, and operations research. Since its inception in 1996, this journal has consistently maintained a prestigious Q1 quartile ranking across multiple categories, including Computer Science Applications, Information Systems, and Management Science and Operations Research, reflecting its significant impact and relevance in the academic community. The journal serves as a vital resource for researchers, professionals, and students alike, fostering interdisciplinary dialogue and the advancement of theoretical and practical contributions in computing. With no open access restrictions, it remains accessible to those engaged in the pursuit of knowledge and innovation in a rapidly evolving field. Housed in the United States, the journal continues to thrive, enriching the discourse in technology and its applications until 2024 and beyond.

Decision Science Letters is a premier open-access journal published by GROWING SCIENCE, dedicated to advancing the field of decision sciences since its inception in 2012. With its ISSN of 1929-5804 and E-ISSN of 1929-5812, this journal serves as a vital platform for disseminating innovative research and practical applications of decision-making models and methodologies. Housed in Canada, the journal plays an essential role in bridging academic insights with real-world practices, appealing to a diverse audience of researchers, professionals, and students alike. Currently ranked in the Q3 category of Decision Sciences (miscellaneous) as per the latest evaluation, it has demonstrated an active contribution to the academic community, facilitating the exchange of knowledge over the years. Decision Science Letters emphasizes the accessibility of research, supporting the open-access model to enhance the global reach of scholarly work in the decision sciences arena. With the journal converging towards its next milestone in 2024, it continues to encourage submissions that push the boundaries of theoretical and applied research in this dynamic field.

ASIA-PACIFIC JOURNAL OF OPERATIONAL RESEARCH is a premier academic publication dedicated to the dynamic fields of operational research and management science, published by WORLD SCIENTIFIC PUBL CO PTE LTD. Located in Singapore, this journal has been pivotal in contributing to the dialogue and development of innovative strategies and methodologies within the operational research community since its inception in 1991. With a focus on practical applications and theoretical advancements, it serves as an essential resource for researchers, practitioners, and students seeking to enhance their understanding and expertise in decision sciences. The journal has gained recognition with a Q3 ranking in Management Science and Operations Research in the 2023 category quartiles, underlining its significance in the academic landscape. The Scopus ranking positions it reasonably well, attracting contributions that address both contemporary and emerging challenges in the field. Although the journal operates under a traditional publishing model, it offers vital access to a wealth of high-quality research, making it a go-to source for key findings and methodologies in operational research. Through its rigorous peer-review process, the journal aims to foster collaborative efforts that advance knowledge and practice across the Asia-Pacific region and beyond.

Medical Decision Making is a premier journal published by SAGE Publications Inc, dedicated to advancing the field of health policy through rigorous research, innovative methodologies, and comprehensive analyses. Since its inception in 1981, it has established itself as a leading platform for disseminating significant findings, and it proudly holds a Q1 ranking in the health policy category, underscoring its commitment to excellence within the academic community. With an impressive Scopus rank of 43 out of 310, the journal ranks in the top 14% of its field, reflecting its influential contributions to medical decision-making processes. Medical Decision Making serves a diverse audience of researchers, practitioners, and policymakers by providing scholarly articles that blend theoretical insights with practical applications, ultimately improving patient care and health outcomes. The journal's dedicated following and its continued relevance through to 2024 position it as an essential resource for anyone vested in the evolution and implementation of effective health policies.

MANAGERIAL AND DECISION ECONOMICS is a highly regarded academic journal published by John Wiley & Sons Ltd that serves as a vital resource in the field of business and management. With an ISSN of 0143-6570 and an E-ISSN of 1099-1468, this journal has established itself as a prominent platform for disseminating cutting-edge research from its inception in 1980 through to 2024. Currently ranked in the Q2 category across multiple fields—including Business and International Management, Management of Technology and Innovation, Management Science and Operations Research, and Strategy and Management—it highlights significant contributions within these domains. The journal is based in the United Kingdom and contributes to the ongoing dialogue and development of innovative managerial practices driven by empirical decision-making research. Although the journal does not offer open access, it remains highly influential, with noteworthy Scopus rankings showing its strong impact within the scholarly community. Researchers, professionals, and students alike will find valuable insights and advancements in management science that inform and enrich their practices and academic pursuits.

The JOURNAL OF THE OPERATIONAL RESEARCH SOCIETY, published by Taylor & Francis Ltd, stands as a premier platform for disseminating innovative research in the fields of operational research, management science, and decision-making processes. With an impressive impact factor and a robust Scopus ranking, it is recognized as a Q1 journal in multiple categories including Management Information Systems, Statistics, and Modeling and Simulation. Since its inception in 1978, this journal has been committed to advancing knowledge through rigorous research and practical applications, catering to a diverse audience of researchers, professionals, and students in the operational research community. Although currently not an open-access journal, it provides invaluable insights and analyses that shape the contemporary discourse in its field, making it an essential resource for anyone looking to stay at the forefront of operational research and its applications.

The IMA Journal of Management Mathematics is a distinguished publication that merges the realms of applied mathematics and its applications in management and economics, published by the esteemed Oxford University Press. With an ISSN of 1471-678X and an E-ISSN of 1471-6798, this journal has been a valuable resource since its inception, encompassing research disseminated from 1986 to present. It proudly holds notable quartile rankings including Q1 in Economics, Econometrics and Finance and Q2 across several related fields. The journal's commitment to advancing knowledge in areas such as management science, modeling and simulation, and operations research makes it essential reading for researchers, professionals, and students who seek to explore the integration of mathematical theories within management practices. Although not an open access journal, its high impact and widespread recognition in the academic community ensure that it remains a prominent platform for innovative research that influences both theory and practice.

JOURNAL OF BUSINESS & ECONOMIC STATISTICS is a premier academic journal published by Taylor & Francis Inc, dedicated to disseminating high-quality research in the fields of business, economics, and statistics. With an impressive impact in the academic community, the journal maintains a distinguished Q1 ranking across various categories including Economics and Econometrics, Social Sciences (miscellaneous), and Statistics and Probability, showcasing its relevance and influence in contemporary research. Since its inception in 1983, the journal has served as a vital resource for researchers, professionals, and students seeking insights into quantitative methodologies and their application in the economic domain. While the journal is not currently open access, its rigorous peer-review process ensures that published articles are of the highest scholarly standards. Researchers and practitioners alike will find a rich repository of empirical and theoretical studies that foster knowledge advancement in the intersecting realms of business, economics, and statistical analysis.