International Journal of Systems Science

Top Research Topics at International Journal of Systems Science?

Control theory, Mathematical optimization, Nonlinear system, Algorithm and Applied mathematics are the subjects of interest in International Journal of Systems Science. The Control theory works featured in International Journal of Systems Science incorporate elements from Control engineering and Control (management). Control engineering study tackled is connected to the field of Control system.

Mathematical optimization research is concerned with Optimal control in particular. Nonlinear control is a key component of Nonlinear system research discussed in the journal.

• Control theory (48.32%)
• Mathematical optimization (18.53%)
• Nonlinear system (14.11%)

What are the most cited papers published in the journal?

• Operations on fuzzy numbers (2101 citations)
• Every Good Regulator of a System Must Be a Model of That System (703 citations)
• Electric load forecasting: Literature survey and classification of methods (502 citations)

Research areas of the most cited articles at International Journal of Systems Science:

The most cited papers mostly deal with topics like Control theory, Mathematical optimization, Nonlinear system, Control theory and Linear system. The most cited papers with studies in Control theory featured incorporate elements of Control engineering and Stability (probability). Algorithm and Sensitivity (control systems) are some topics wherein Mathematical optimization research discussed in the published articles has an impact.

What topics the last edition of the journal is best known for?

• Artificial intelligence
• Statistics
• Control theory

The previous edition focused in particular on these issues:

The main points discussed in the journal deals with Control theory, Nonlinear system, Control (management), Tracking (particle physics) and Event triggered. International Journal of Systems Science explores research in Control theory and the adjacent study of Class (computer programming). The studies on Nonlinear system discussed can also contribute to research in the domains of Control (linguistics), Fuzzy logic and Performance control.

The journal links adjacent topics like Control (linguistics) with Multi-agent system. The work on Tracking (particle physics) addressed in it expands to the thematically related Trajectory. Research on Actuator addressed in International Journal of Systems Science frequently intersections with the field of Fault tolerance.

The most cited articles from the last journal are:

• Recursive filtering of networked nonlinear systems: a survey (28 citations)
• Communication-protocol-based analysis and synthesis of networked systems: progress, prospects and challenges (17 citations)
• A survey on sliding mode control for networked control systems (16 citations)

Papers citation over time

A key indicator for each journal is its effectiveness in reaching other researchers with the papers published at that venue.

The chart below presents the interquartile range (first quartile 25%, median 50% and third quartile 75%) of the number of citations of articles over time.

Top authors and change over time

The top authors publishing in International Journal of Systems Science (based on the number of publications) are:

• Jati K. Sengupta (63 papers) absent at the last edition,
• Guang-Hong Yang (45 papers) published 1 paper at the last edition, 1 less than at the previous edition,
• Stephen A. Billings (40 papers) absent at the last edition,
• Spyros G. Tzafestas (39 papers) absent at the last edition,
• B. Porter (39 papers) absent at the last edition.

The overall trend for top authors publishing in this journal is outlined below. The chart shows the number of publications at each edition of the journal for top authors.

Top affiliations and change over time

Only papers with recognized affiliations are considered

The top affiliations publishing in International Journal of Systems Science (based on the number of publications) are:

• Northeastern University (China) (147 papers) published 11 papers at the last edition, 4 more than at the previous edition,
• Harbin Institute of Technology (116 papers) published 16 papers at the last edition, 8 more than at the previous edition,
• National Cheng Kung University (107 papers) absent at the last edition,
• Nanjing University of Science and Technology (94 papers) published 8 papers at the last edition, 1 more than at the previous edition,
• Beihang University (85 papers) published 3 papers at the last edition the same number as at the previous edition.

The overall trend for top affiliations publishing in this journal is outlined below. The chart shows the number of publications at each edition of the journal for top affiliations.

Publication chance based on affiliation

The publication chance index shows the ratio of articles published by the best research institutions in the journal edition to all articles published within that journal. The best research institutions were selected based on the largest number of articles published during all editions of the journal.

The chart below presents the percentage ratio of articles from top institutions (based on their ranking of total papers).Top affiliations were grouped by their rank into the following tiers: top 1-10, top 11-20, top 21-50, and top 51+. Only articles with a recognized affiliation are considered.

During the most recent 2021 edition, 3.42% of publications had an unrecognized affiliation. Out of the publications with recognized affiliations, 20.21% were posted by at least one author from the top 10 institutions publishing in the journal. Another 8.16% included authors affiliated with research institutions from the top 11-20 affiliations. Institutions from the 21-50 range included 14.54% of all publications and 57.09% were from other institutions.

Returning Authors Index

A very common phenomenon observed among researchers publishing scientific articles is the intentional selection of journals they have already attended in the past. In particular, it is worth analyzing the case when the authors participate in the same journal from year to year.

The Returning Authors Index presented below illustrates the ratio of authors who participated in both a given as well as the previous edition of the journal in relation to all participants in a given year.

Returning Institution Index

The graph below shows the Returning Institution Index, illustrating the ratio of institutions that participated in both a given and the previous edition of the conference in relation to all affiliations present in a given year.

The experience to innovation index

Our experience to innovation index was created to show a cross-section of the experience level of authors publishing in a journal. The index includes the authors publishing at the last edition of a journal, grouped by total number of publications throughout their academic career (P) and the total number of citations of these publications ever received (C).

The group intervals were selected empirically to best show the diversity of the authors' experiences, their labels were selected as a convenience, not as judgment. The authors were divided into the following groups:

• Novice - P < 5 or C < 25 (the number of publications less than 5 or the number of citations less than 25),
• Competent - P < 10 or C < 100 (the number of publications less than 10 or the number of citations less than 100),
• Experienced - P < 25 or C < 625 (the number of publications less than 25 or the number of citations less than 625),
• Master - P < 50 or C < 2500 (the number of publications less than 50 or the number of citations less than 2500),
• Star - P ≥ 50 and C ≥ 2500 (both the number of publications greater than 50 and the number of citations greater than 2500).

The chart below illustrates experience levels of first authors in cases of publications with multiple authors.