A scientist’s position in the ranking is determined by their D-index (Discipline H-index), which is a specialized variant of the traditional H-index focusing exclusively on papers and citation counts within the specific discipline under examination—in this case, Environmental Sciences. This ensures that the metric accurately reflects a researcher’s influence and productivity restricted to their field of expertise.
Scope of Research and Inclusion Criteria
The ranking analysis began with 279,971 scientist profiles identified across various bibliometric sources spanning all scientific disciplines. Within this expansive dataset, 6 scientists specifically affiliated with Environmental Sciences in Slovenia were examined in detail.
To qualify for the ranking, a scientist’s D-index had to meet a minimum threshold of 30, with the majority of their tier publications concentrated in the area of Environmental Sciences. Furthermore, a researcher’s awards and recognized achievements in the field were also factored into qualification considerations, reinforcing the ranking’s focus on both quantitative and qualitative markers of excellence.
The threshold D-index value for identifying top researchers is calibrated in increments of 10, aligned with the estimated total number of scholars in each discipline, guaranteeing inclusion of the top 1% of leading experts. An additional requirement is that the proximity between a scientist’s general H-index and their discipline-specific D-index does not exceed 30%, ensuring that the ranking reflects focused disciplinary impact rather than general scientific output.
Verification and Validation Practices
Recognizing that raw bibliometric data alone cannot serve as an absolute measure of scholarly output or merit, the Research.com team conducted meticulous manual verification of all scientist profiles. This process involved cross-correlation of profile data against publications indexed in a wide array of trustworthy and authoritative sources to confirm accuracy and relevance.
Although not directly contributing to the computation of ranking positions, the volume of papers published in prominent journals and conference proceedings is acknowledged as a valuable secondary signal of a scientist’s research contribution within Environmental Sciences. The final ranking position is founded on the rigorously validated D-index calculated from OpenAlex and CrossRef data, the most prominent and well-established bibliometric databases accessible to the research community.
For a detailed description of the data collection, metrics, and verification processes underpinning this ranking, we invite readers to visit our methodology page.
Research.com’s Mission and Vision
At Research.com, our mission is to motivate researchers, organizations, and policymakers globally to monitor and understand the trajectories of leading experts in their respective fields. By providing a transparent and rigorously assembled ranking of top scientists, we aim to offer the entire scientific community—ranging from individual researchers to academic institutions and funding agencies—a reliable resource to identify who the foremost experts are in specific disciplines, geographical regions, and institutions.
We are committed to maintaining the highest standards of credibility and meticulousness in compiling these rankings, fostering informed decision-making and promoting excellence across the global research landscape.
