| Indicator | University Z-score | Average country Z-score |
|---|---|---|
|
Multi-affiliation
|
-0.845 | -0.119 |
|
Retracted Output
|
0.098 | -0.208 |
|
Institutional Self-Citation
|
0.281 | 0.208 |
|
Discontinued Journals Output
|
-0.451 | -0.328 |
|
Hyperauthored Output
|
-0.582 | 0.881 |
|
Leadership Impact Gap
|
1.193 | 0.809 |
|
Hyperprolific Authors
|
-0.947 | 0.288 |
|
Institutional Journal Output
|
-0.268 | -0.139 |
|
Redundant Output
|
2.453 | 0.778 |
Nagaoka University of Technology presents a robust yet nuanced scientific integrity profile, with an overall score of -0.100 indicating a performance that is generally aligned with sound practices but with specific areas requiring strategic attention. The institution demonstrates commendable strengths in its operational governance, showing very low risk in the selection of publication venues, the concentration of authorship, and the use of institutional journals. However, this is counterbalanced by medium-risk indicators related to a higher-than-average rate of retractions, a dependency on external collaborations for impact, and a notable tendency towards redundant publications. According to SCImago Institutions Rankings data, these integrity metrics underpin a strong research portfolio, with national leadership demonstrated in key areas such as Earth and Planetary Sciences (ranked 22nd in Japan), Biochemistry, Genetics and Molecular Biology (26th), and Environmental Science (54th). This profile presents a complex alignment with the university's mission to "cultivate future engineers who can lead in the global community." While foundational integrity is strong, the identified risks—particularly those that suggest a prioritization of quantity over substance or a reliance on external leadership—could challenge the institution's ability to model the highest standards of scientific excellence and responsibility. By proactively addressing these specific vulnerabilities, Nagaoka University of Technology can fortify its global reputation, ensuring its graduates are not only technically skilled but are also exemplars of scientific integrity.
The institution presents a Z-score of -0.845, which is significantly lower than the national average of -0.119. This demonstrates a prudent and rigorous approach to managing affiliations, surpassing the already low-risk standard observed across Japan. This very low rate indicates a healthy and transparent collaborative ecosystem, effectively avoiding strategic practices like “affiliation shopping” that can be used to artificially inflate institutional credit. The data suggests that collaborations are managed with clarity and integrity, reflecting positively on the institution's governance.
With a Z-score of 0.098, the institution shows a moderate risk level that deviates from the low-risk national benchmark of -0.208. This suggests the university is more sensitive to factors leading to retractions than its national peers. While some retractions result from the honest correction of errors, a rate significantly higher than the norm alerts to a potential vulnerability in pre-publication quality control mechanisms. This discrepancy warrants a qualitative review to determine if it stems from isolated incidents or indicates a systemic weakness in methodological rigor or integrity culture that requires managerial intervention.
The institution's Z-score of 0.281 is slightly higher than the national average of 0.208, both of which fall within the medium-risk category. This indicates that the university is more exposed to this risk factor than its peers, reflecting a pattern that is already present in the national system. A certain level of self-citation is natural, but this elevated rate warns of a potential 'echo chamber' where research is validated internally without sufficient external scrutiny. This dynamic could lead to an endogamous inflation of academic impact, where influence is oversized by internal citation practices rather than by broader recognition from the global scientific community.
The institution's Z-score of -0.451 is in the very low-risk category, consistent with the low-risk national average of -0.328. This excellent result demonstrates a consistent and effective policy of due diligence in selecting publication channels. The complete absence of risk signals in this area confirms that the institution's researchers are successfully avoiding predatory or low-quality journals, thereby protecting the university's reputation and ensuring that scientific output is channeled through credible and enduring media.
With a Z-score of -0.582, the institution exhibits a low-risk profile that contrasts sharply with the medium-risk national average of 0.881. This highlights a notable institutional resilience, as internal control mechanisms appear to successfully mitigate a systemic risk prevalent in the country. The university's ability to maintain low rates of hyper-authorship suggests a culture that values clear accountability and distinguishes effectively between necessary, large-scale scientific collaboration and questionable practices like honorary or political authorship, which can dilute individual responsibility.
The institution's Z-score of 1.193 is higher than the national average of 0.809, placing it in a position of high exposure within a medium-risk national context. This wide positive gap signals a significant dependency on external partners for achieving citation impact. While collaboration is vital, this result suggests a potential sustainability risk where the institution's scientific prestige may be more exogenous and dependent than structural. It invites a strategic reflection on whether its high-impact metrics are a product of genuine internal capacity or a result of strategic positioning in collaborations where it does not exercise primary intellectual leadership.
The institution shows a Z-score of -0.947, a very low-risk value that signifies a preventive isolation from the medium-risk dynamics observed at the national level (0.288). This result indicates that the university does not replicate the risk of extreme individual publication volumes found elsewhere in the country. The absence of hyperprolific authors suggests a healthy institutional balance between quantity and quality, effectively avoiding risks such as coercive authorship or the assignment of credit without meaningful intellectual contribution, thereby upholding the integrity of its scientific record.
With a Z-score of -0.268, the institution demonstrates a total operational silence on this indicator, performing even better than the very low-risk national average of -0.139. This exceptional result points to a strong commitment to independent, external peer review. By avoiding reliance on in-house journals, the university effectively eliminates potential conflicts of interest and risks of academic endogamy, ensuring its research is validated through standard competitive channels and maximizing its potential for global visibility and impact.
The institution's Z-score for this indicator is 2.453, a medium-risk value that indicates high exposure when compared to the national average of 0.778. This significant difference suggests the university is more prone to practices of data fragmentation or 'salami slicing' than its peers. Such a high value serves as an alert for the potential practice of dividing coherent studies into minimal publishable units to artificially inflate productivity metrics. This pattern not only overburdens the peer-review system but also distorts the scientific evidence base, signaling a need to reinforce policies that prioritize the generation of significant new knowledge over sheer publication volume.
