1,721,184 research outputs found
Review of sterlet (Acipenser ruthenus L. 1758) (Actinopterygii: Acipenseridae) feeding habits in the River Danube, 1694-852 river km
No full textDjikanovic, V., Skoric, S., Lenhardt, M., Smederevac-Lalic, M., Visnjic-Jeftic, Z., Spasic, S., Mickovic, B. (2014): Review of sterlet (Acipenser ruthenus L. 1758) (Actinopterygii: Acipenseridae) feeding habits in the River Danube, 1694-852 river km. Journal of Natural History 49 (5): 411-417, DOI: 10.1080/00222933.2013.87799
Figure 2 in Review of sterlet (Acipenser ruthenus L. 1758) (Actinopterygii: Acipenseridae) feeding habits in the River Danube, 1694-852 river km
No full textFigure 2. Relative abundance of food items (bottom fauna taxa) found in the stomach contents of sterlet sampled from the River Danube.Published as part of Djikanovic, V., Skoric, S., Lenhardt, M., Smederevac-Lalic, M., Visnjic-Jeftic, Z., Spasic, S. & Mickovic, B., 2014, Review of sterlet (Acipenser ruthenus L. 1758) (Actinopterygii: Acipenseridae) feeding habits in the River Danube, 1694-852 river km, pp. 411-417 in Journal of Natural History 49 (5) on page 414, DOI: 10.1080/00222933.2013.877991, http://zenodo.org/record/400412
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
DEXAMETHASONE INJECTION IN SURGERY OF LOWER THIRD MOLARS: A RETROSPECTIVE CLINICAL STUDY
No full textAim: the aim of this study is to evaluate the efficacy of two different dosages of dexamethasone, i.e. 2 and 4 mg injected
submucosally to reduce postoperative discomfort after mandibular third molar surgery.
Methods: the study was conducted on 150 patients subjected
to surgical removal of an impacted third molar. Patients were
randomly divided into three groups: G1 (n = 50) received 4 mg/1
ml dexamethasone submucosally; G2 (n = 50) received 2 mg/0,5
ml dexamethasone submucosally; G3 (n = 50) received saline
submucosally. The drug was administered after wound closure
through silk sutures. Pain, swelling, trismus, analgesic consumption and operation time were comparatively evaluated at
three different time point: T0 before surgery, T1
on 3rd and T2
on
7th day after surgery. The sutures were removed on the 7th day.
Results: G2 showed statistically significant reduction in swelling
considering male gender. The differences between the time points
where statistically significant in G2 under 25 years old when trismus was analyzed. Difference between G2 and G3 was statistically significant at T1 when compared in painkillers assumption.
Conclusion: it can be concluded that better post-operative values were obtained with 2 mg dexamethasone infiltration in order
to reduce trismus in subjects under 25 years old. The statistical
analysis showed positive effects in female patients with 4 mg dose of dexamethasone in the aperture evaluation and oedema
CROWN-TO-ROOT RATIO IN ENDODONTIC SURGERY: A SURVIVAL STUDY
Full text linkAim: to assess the influence of the crown height (CH), root length (RL) and crown-to-root ratio (CRR) on the survival of te- eth subjected to surgical endodontic retreatment and classi- fied as periapically healed.
Methods: a single operator performed all the endodontic mi- crosurgery interventions. The present analysis selected the te- eth classified as ‘‘complete periapical healing’’ according to the Molven-Halse-Grung scale. The periapical radiographs were analyzed by two independent calibrated examiners, who measured CH and RL in a blind manner. The CRR was calcula- ted as the ratio of the two variables CH and RL. The measure- ments were performed by comparing the post-operative radio- graphs (t0) with those taken for a previous retrospective analysis (t1) and the most recent available (t2). An independent
statistician conducted a survival analysis using Kaplan-Meier plots and a log-rank test (a = 0.05).
Results: thirty-eight patients were evaluated, each one contri- buting to the study with a single tooth. The mean follow-up pe- riod was 5,96 ± 3,36 years. Comparing the CRR and RL values between t1 and t2, the difference was found statistically signifi- cant (p = 0.03). Survival was improved for the teeth with roots longer than 7 mm. There were no statistically significant diffe- rences among the remaining comparisons.
Conclusions: root length ≥ 7mm exhibited better chances of long-term survival. Over time, a risk of further decrease of cli- nical RL due to periodontal disease and consequent increase of CRR could be critical by a mechanical point of view. Other studies are needed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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