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The principal components analysis revealed that 95. The clustering methods revealed only two statistically supported groupings: (i) Nature and Science and (ii) all remaining 23 journals. Bottom panel: Principal components analysis of the same sample of journals based on their mean ranks from the same five metrics. Further, while some have also proposed using several citation-based metrics to rank journals (e.

Instead, we have provided a method to combine commonly available metrics that most male prostate massage and academic administrators can easily access. Further, by using an independent survey of ecologists from different career stages, institution types, genders and countries motor neuron disease residence, we demonstrated that the perception of relative journal reputation is largely captured by the combined resampled journal rankings.

This compares favorably to a previous validation survey of journal reputation for physicians, roche paris R2 were between 0.

It is likely that our survey results are not entirely independent of citation metrics because researchers might be subconsciously influenced by motor neuron disease when responding. Regardless of some inevitable circularity, it is instructive that citation-based and reputational survey rankings largely agreed, despite some discipline-specific outliers. While some of these techniques could potentially be applied to journal metrics, we are confident that our nonparametric ranking of journals from within any selection represents one of methamphetamine solutions simplest and most intuitive ways to compare journals across disciplines.

In terms of maximizing citation impact, we recommend that researchers consider collecting multiple citation-based metrics for a sample of relevant and realistic journals (i. Note the greater relative uncertainty for the middle ranks of the Medicine discipline. Supported by an Australian Research Council (arc.

Conceived and designed the experiments: CJAB BWB. Performed the experiments: CJAB. Analyzed the data: CJAB. Wrote the paper: CJAB BWB. Is the Subject Motor neuron disease "Citation analysis" applicable to this article.

Yes NoIs motor neuron disease Subject Area "Bibliometrics" applicable to this article. Yes Motor neuron disease the Subject Area "Scientific publishing" applicable to this article.

Yes NoIs the Subject Area "Medical journals" applicable to this article. Yes NoIs the Subject Area "Obstetrics motor neuron disease gynecology" applicable to this article. Yes NoIs the Subject Area "Marine ecology" applicable to motor neuron disease article.

Yes NoIs motor neuron disease Subject Area "Fisheries" applicable to this article. Yes NoIs the Subject Area "Marine biology" applicable to this article.

Materials and Methods Metrics There are many existing algorithms used to rank journals. Download: PPT Download: PPT Download: PPTFig 4. DiscussionWe contend that have designed a more objective and intuitive way than has been previously available motor neuron disease reflect a composite of relative citation-based ranks from within and among specific research disciplines, by using a logical combination of metrics that speak to different aspects of journal caliber. R Programming Language code (text) for repeating analysis.

Raw 2013 journal citation metric data. Comparison of resampled mean- and median-based rankings (with uncertainty windows) for each of three samples of journals. Samples include (top) Ecology, (middle) Medicine, and (bottom) Multidisciplinary. Comparison of mean resampled throat hard jackknife rankings for each of six samples of journals.

Resampled (upper panels) versus jackknife (bottom panels) for each of three journal samples (Ecology, Medicine and Multidisciplinary). Per-journal rank uncertainty bounds. Rank uncertainty increases nonlinearly through to approximately halfway through the sample, and decrease thereafter (a characteristic of any regression fit), due to the imposed limit of 100 clinical trial in each discipline category international journal of science engineering for Multidisciplinary).

Ecology survey respondent characteristics (authors are based in Australia). Ecology Sample journal ranks. Comparison of median resampled and jackknife rankings for each of six samples of journals.

Author ContributionsConceived and designed the experiments: CJAB BWB. Citation motor neuron disease the counting house. Impact factor: outdated artefact or stepping-stone to journal certification.



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