Niigata University

EXECUTIVE SUMMARY AND STRATEGIC VISION

Niigata University demonstrates a robust overall scientific integrity profile, reflected in a global risk score of -0.098. This indicates a performance that is not only sound but slightly exceeds the expected baseline, showcasing a strong commitment to responsible research practices. The institution's primary strengths lie in its exceptionally low rates of retracted output, publications in discontinued journals, and output within its own institutional journals, signaling effective quality control and a commitment to external validation. However, areas requiring strategic attention have been identified, particularly a significant rate of hyper-authored output and a medium-risk gap between its overall research impact and the impact of work where it holds intellectual leadership. According to SCImago Institutions Rankings data, the university exhibits notable thematic strengths, ranking among the top national institutions in areas such as Dentistry (10th in Japan), Psychology (30th), and Biochemistry, Genetics and Molecular Biology (37th). These results align well with the university's mission to contribute to global development through research and expand international partnerships. Nevertheless, the identified risks—particularly the dependency on external leadership for impact—could challenge the long-term sustainability of its own "globally" recognized excellence. To fully realize its mission, it is recommended that the university investigates its authorship and collaboration patterns to ensure they foster genuine internal capacity and transparent accountability, thereby reinforcing its foundation of scientific integrity.

ANALYSIS BY INDICATOR

Rate of Multiple Affiliations

The institution's Z-score is -0.296, which is lower than the national average of -0.119. This prudent profile suggests that the university manages its collaboration and affiliation processes with more rigor than the national standard. While multiple affiliations are often a legitimate result of researcher mobility or partnerships, the university's controlled rate indicates a well-managed approach that effectively avoids the risk of strategically inflating institutional credit or engaging in "affiliation shopping," ensuring that credited outputs genuinely reflect institutional contributions.

Rate of Retracted Output

The university demonstrates an exceptionally low Z-score of -0.447 for retracted publications, well below the already low national average of -0.208. This result demonstrates low-profile consistency, where the absence of risk signals aligns with the national standard for research integrity. Retractions are complex events, but such a minimal rate strongly suggests that the institution's quality control mechanisms and supervisory processes prior to publication are highly effective, preventing the kind of systemic failures that can lead to recurring malpractice or a lack of methodological rigor.

Rate of Institutional Self-Citation

With a Z-score of -0.264, the institution shows a significantly lower rate of self-citation compared to the national average of 0.208. This demonstrates institutional resilience, as the university's control mechanisms appear to successfully mitigate the systemic risks of academic insularity observed at the national level. A certain level of self-citation is natural, reflecting the continuity of research lines. However, by maintaining a low rate, the university avoids signals of concerning 'echo chambers' and ensures its work is validated by the broader scientific community, reinforcing the external recognition of its academic influence rather than relying on internal dynamics.

Rate of Output in Discontinued Journals

The institution maintains a Z-score of -0.360, which is slightly below the national average of -0.328. This indicates a low-profile consistency, with the university's practices aligning with the national standard in avoiding problematic publication venues. This strong performance suggests that institutional researchers exercise excellent due diligence in selecting dissemination channels. By effectively avoiding journals that fail to meet international ethical or quality standards, the university protects itself from severe reputational risks and demonstrates a high level of information literacy, preventing the waste of resources on 'predatory' or low-quality practices.

Rate of Hyper-Authored Output

Niigata University presents a Z-score of 1.583 in this area, a figure that is notably higher than the national average of 0.881. This pattern suggests a risk accentuation, where the institution amplifies vulnerabilities already present in the national system regarding authorship practices. While extensive author lists are legitimate in 'Big Science' contexts, a high Z-score outside these fields can indicate author list inflation, which dilutes individual accountability and transparency. This serves as a critical signal to distinguish between necessary massive collaboration and potential 'honorary' or political authorship practices that could compromise research integrity.

Gap between Impact of total output and the impact of output with leadership

The institution's Z-score for this indicator is 1.788, which is considerably higher than the national average of 0.809. This reveals a high exposure to dependency risk, suggesting the center is more prone to showing alert signals in this area than its environment. A wide positive gap, where global impact is high but the impact of institution-led research is comparatively low, signals a potential risk to sustainability. This high value suggests that a significant portion of the university's scientific prestige may be dependent and exogenous, inviting reflection on whether its excellence metrics result from genuine internal capacity or from strategic positioning in collaborations where it does not exercise primary intellectual leadership.

Rate of Hyperprolific Authors

The university's Z-score of 0.125 is below the national average of 0.288. This reflects a differentiated management approach, where the institution appears to moderate risks related to extreme publication volumes that are more common in the country. While high productivity can evidence leadership, extreme volumes often challenge the limits of meaningful intellectual contribution. By maintaining a lower rate, the university mitigates the risks of imbalances between quantity and quality, such as coercive authorship or the assignment of authorship without real participation, thereby prioritizing the integrity of the scientific record over sheer metrics.

Rate of Output in Institutional Journals

With a Z-score of -0.268, the institution's rate of publication in its own journals is even lower than the national average of -0.139. This signals a state of total operational silence, with an absence of risk signals that is even more pronounced than the national baseline. While in-house journals can be valuable for local dissemination, the university's minimal reliance on them avoids potential conflicts of interest and the risk of academic endogamy. This practice ensures that its scientific production consistently undergoes independent external peer review, maximizing global visibility and competitive validation.

Rate of Redundant Output

The institution has a Z-score of -0.063, in stark contrast to the national average of 0.778, which indicates a medium-risk environment. This demonstrates strong institutional resilience, as internal control mechanisms appear to effectively mitigate a systemic risk prevalent at the national level. A high rate of bibliographic overlap can indicate 'salami slicing,' where studies are fragmented to inflate productivity. The university's very low score is a positive indicator that its research culture prioritizes the publication of significant new knowledge over artificially increasing publication volume, thus upholding the integrity of the scientific evidence base.