58 research outputs found
Evidence for a possible life-cycle association between <i>Syracosphaera protrudens</i> (heterococcolithophore) and <i>Syracosphaera pulchra</i> HOL <i>pirus</i>-type (holococcolithophore)
No full textAbstract. An apparently unambiguous combination coccosphere from the Eastern Mediterranean (Aegean Sea, Greece) is documented involving Syracosphaera protrudens Okada & McIntyre, 1977 and Syracosphaera pulchra Lohmann, 1902 HOL pirus-type. This finding is difficult to interpret in terms of the current understanding of Syracosphaera taxonomy and adds evidence to the hypothesis of a distinctly complex Syracosphaera pulchra life cycle.
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Comparative risk-adjusted mortality outcomes after primary surgery, radiotherapy, or androgen-deprivation therapy for localized prostate cancer
No full textHow to assess the impact of an electronic document? And what does impact mean anyway? : reliable usage statistics in heterogeneous repository communities
No full text<b>Purpose</b>
Usually impact of research and researchers is tried to be quantified by using citation data: Either by journal-centered citation data as in the case of the journal impact factor JIF or by author-centered citation data as in the case of the Hirsch- or h-index. The paper discusses a range of impact measures, especially usage based metrics. Furthermore the authors report the results of two surveys. The surveys focused on innovative features for open access repositories — with an emphasis on functionalities based on usage information.
<b>Design/methodology/approach</b>
The first part of the article analyzes both citation-based and usage-based metrics. The second part is based on the findings of the surveys: One in form of a brainstorming session with information professionals and scientists at the OAI6 conference in Geneva, the second in form of expert interviews mainly with scientists.
<b>Findings</b>
The results of the surveys indicate an interest in the social aspects of science like visualizations of social graphs both for persons and their publications. Furthermore usage data is considered an appropriate measure to describe quality and coverage of scientific documents, admittedly the consistence of usage information among repository has to be kept in mind. The scientist that took part in the survey also asked for community services, assuming these might help to identify relevant scientific information more easily. Some of the other topics of interest were personalization or easy submission procedures.
<b>Originality/value</b>
This paper delineates current discussions about citation-based and usage-based metrics. Based on the results of the surveys it depicts which functionalities could enhance repositories, what features are required by scientists and information professionals and whether usage-based services are considered valuable. These results also outline some elements of future repository research
Comparative analysis of prostate-specific antigen free survival outcomes for patients with low, intermediate and high risk prostate cancer treatment by radical therapy. Results from the Prostate Cancer Results Study Group
No full textLetter to the Editor on: A. Siegmann et al. Dose escalation for patients with decreasing PSA during radiotherapy for elevated PSA after radical prostatectomy improves biochemical progression-free survival. Results of a retrospective study. In: Strahlenther Onkol 2011;187:467-72 (No. 8) (DOI 10.1007/s00066-011-2229-3). P. Ghadjar, D. Zwahlen, D.M. Aebersold: Selection bias is not a good reason for dose intensification in patients with PSA recurrence after radical prostatectomy
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Elektronické uživatelské statistiky a jejich vývoj
No full textLibraries spend huge amounts of money on electronic resources and related services; thus it is necessary to carefully measure and evaluate their usage. The article describes development of the methods for usage data collection and analysis. Described further is the principle of usage data harvesting via SUSHI (Standardized Usage Statistics Harvesting Initiative) and methods of COUNTER (Counting Online Usage of NeTworked Electronic Resources) statistics proccessing. The author gives a brief information about a relatively new project PIRUS 2. The presumable development of the methods of measuring usage closes the contribution
Alcune considerazioni sulla valutazione della ricerca nelle scienze umane
No full textResearch assessment in the Humanities does not follow the STM paradigm: journals are not the main research output, peer-review is not widespread, Impact Factor is scarcely adopted. Notwithstanding quality control is becoming important in the Humanities too. Ex-post evaluation through overlay journals and Web 2.0 social tools may also be combined or used as an alternative to traditional peer-review to evaluate research in the Humanities. As far as the quantitative assessment is regarded new bibliometric indicators should be conceived for the Humanities. Author describes also very briefly the Usage Factor UKSG project, The European Reference Index for Humanities (ERIH) and the Publisher and Institutional Repository Usage Statistics (PIRUS) project
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