| Indicator | University Z-score | Average country Z-score |
|---|---|---|
|
Multi-affiliation
|
-1.064 | -0.119 |
|
Retracted Output
|
-0.334 | -0.208 |
|
Institutional Self-Citation
|
0.214 | 0.208 |
|
Discontinued Journals Output
|
-0.498 | -0.328 |
|
Hyperauthored Output
|
0.653 | 0.881 |
|
Leadership Impact Gap
|
3.265 | 0.809 |
|
Hyperprolific Authors
|
-1.413 | 0.288 |
|
Institutional Journal Output
|
-0.268 | -0.139 |
|
Redundant Output
|
2.915 | 0.778 |
The National Defense Academy of Japan presents a complex integrity profile, with an overall risk score of -0.122 indicating a near-neutral position that masks significant internal contrasts. The institution demonstrates exceptional strengths and robust governance in several key areas, showing very low-risk levels for Rate of Multiple Affiliations, Rate of Hyperprolific Authors, Rate of Output in Discontinued Journals, and Rate of Output in Institutional Journals. These results point to a solid foundation of ethical practices and a commitment to transparency. However, this strong performance is counterbalanced by two critical vulnerabilities: a significant risk in the Gap between the impact of total output and the impact of output with leadership, and a similarly high risk in the Rate of Redundant Output. Thematically, the institution excels nationally, with SCImago Institutions Rankings placing it among Japan's top performers in Mathematics (29th), Computer Science (33rd), Engineering (42nd), and Earth and Planetary Sciences (47th). While the institution's specific mission statement was not available for this analysis, the identified risks—dependency on external partners for impact and potential data fragmentation—directly challenge universal academic goals of excellence and social responsibility. A reputation for leadership cannot be sustained if intellectual leadership is primarily external, and the practice of 'salami slicing' contradicts the ethical obligation to produce meaningful, non-redundant scientific knowledge. A strategic focus on rectifying these two high-risk areas is therefore recommended; by doing so, the Academy can leverage its considerable strengths to ensure its research integrity fully aligns with its outstanding disciplinary performance.
The institution's Z-score of -1.064 is significantly lower than the national average of -0.119. This demonstrates a commendable level of clarity and control in how author affiliations are reported, positioning the Academy well ahead of the national standard. While multiple affiliations can be a legitimate outcome of collaboration, the institution's exceptionally low rate provides strong assurance against any perception of strategic "affiliation shopping" or attempts to artificially inflate institutional credit, reflecting a culture of transparency in its partnerships.
With a Z-score of -0.334, the institution maintains a low rate of retractions, performing with slightly more rigor than the national average of -0.208. This prudent profile suggests that its pre-publication quality control and supervision mechanisms are effective. Retractions can signify responsible correction of honest errors, and the Academy's controlled rate indicates that such events are managed appropriately without pointing to systemic failures or vulnerabilities in its broader integrity culture.
The institution's Z-score of 0.214 is nearly identical to the national average of 0.208, indicating that its self-citation practices align with a systemic pattern common throughout the country's academic landscape. A certain level of self-citation is natural, reflecting ongoing research lines. However, this moderate level warrants observation, as it can be an early signal of scientific isolation or "echo chambers" where work is validated internally, potentially leading to an endogamous inflation of impact rather than recognition from the wider global community.
The institution shows an exemplary Z-score of -0.498, far below the already low-risk national average of -0.328. This near-absence of publications in discontinued journals demonstrates a robust and consistent due diligence process in selecting dissemination channels. This practice effectively insulates the Academy from the severe reputational risks associated with predatory or low-quality publishers and highlights a strong commitment to channeling its scientific output through credible and ethically sound venues.
At a Z-score of 0.653, the institution's rate of hyper-authored publications is moderate and notably more controlled than the national average of 0.881. This suggests a differentiated management approach that moderates a risk more common in its environment. While extensive author lists are legitimate in "Big Science" disciplines, this moderate signal serves as a reminder to continually distinguish between necessary massive collaboration and practices like "honorary" authorship that can dilute individual accountability and transparency.
This indicator presents a significant concern, with the institution's Z-score of 3.265 critically accentuating the moderate national average of 0.809. This extremely wide positive gap reveals a structural vulnerability: while the institution's overall scientific impact is high, this prestige appears heavily dependent on external collaborators, as the impact of research led by its own authors is comparatively low. This signals a sustainability risk, suggesting that its reputation for excellence may be derived from strategic positioning in partnerships rather than from its own structural and intellectual leadership, a situation that requires urgent strategic review.
The institution's Z-score of -1.413 marks a stark and positive contrast to the national average of 0.288. This result demonstrates a preventive isolation from a risk dynamic present elsewhere in the country. The complete absence of authors with extreme publication volumes indicates a healthy institutional culture that prioritizes quality and meaningful intellectual contribution over sheer quantity. This effectively mitigates risks such as coercive authorship or credit assigned without real participation, reinforcing 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 negligible reliance on in-house journals for publication underscores a strong commitment to independent, external peer review and global visibility. By avoiding internal channels, the Academy successfully sidesteps potential conflicts of interest and the risk of academic endogamy, ensuring its research is validated through standard competitive processes.
This indicator is a critical red flag, as the institution's Z-score of 2.915 represents a severe accentuation of the moderate risk seen at the national level (0.778). Such a high value points to a systemic practice of data fragmentation, or "salami slicing," where coherent studies are artificially divided into minimal publishable units to inflate productivity metrics. This practice is highly problematic as it distorts the scientific evidence base, overburdens the peer review system, and prioritizes publication volume over the generation of significant, cohesive new knowledge, requiring immediate and decisive intervention.
