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Beyond cumulative impact: the he-index and a volume-normalized efficiency metric for research evaluation

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Beyond cumulative impact: the he-index and a volume-normalized efficiency metric for research evaluation

Mohamd Laimon · Frontiers Media S.A · 2026 · ISSN 2504-0537

Traditional bibliometric indicators such as the h-index emphasize cumulative citation impact but provide limited insight into the efficiency and concentration of that impact across a researcher's publication portfolio. T...

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Research trends and knowledge mapping of transcranial direct current stimulation in depression: a bibliometric study based on web of science, Scopus, and PubMed (2000-2025)

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Research trends and knowledge mapping of transcranial direct current stimulation in depression: a bibliometric study based on web of science, Scopus, and PubMed (2000-2025)

Dongyu Feng et al · Frontiers Media S.A · 2026 · ISSN 1664-0640

BackgroundDepressive disorders are clinically heterogeneous and mechanistically complex psychiatric conditions. Transcranial direct current stimulation (tDCS), a key non-invasive neuromodulation technique, has expanded r...

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