1,720,977 research outputs found
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
A case-control study on cigarette, alcohol, and coffee consumption preceding Parkinson's disease
No full textObjective: To investigate the association between cigarette smoking, alcohol drinking, coffee consumption and Parkinson's disease (PD). Methods: We selected subjects affected by idiopathic PD, with a Mini-Mental State Examination of ≥ 24, and controls matched 1 to 1 with cases by age (± 2 years) and sex. Controls were randomly selected from the resident list of the same municipality of residence of the cases. We assessed cigarette smoking, alcohol drinking, and coffee consumption preceding the onset of PD or the corresponding time for controls using a structured questionnaire, which also evaluated the duration and dose of exposure. Using conditional logistic regression analysis, we calculated adjusted OR and 95% CI. Results: We interviewed 150 PD patients and 150 matched controls. Cigarette smoking (ever vs. never smokers OR = 0.66, 95% CI = 0.41-1.05, p = 0.08) did not show a statistically significant association with PD. We observed an inverse association between alcohol drinking (ever vs. never OR = 0.61, 95% CI = 0.39-0.97, p = 0.037) and coffee consumption (ever vs. never OR = 0.16, 95% CI 0.05-0.46, p = 0.0001) and PD. These associations remained significant after adjustment for other covariates: OR for ever vs. never alcohol consumption was 0.62 (95% CI = 0.43-0.89, p = 0.009) and that for coffee drinking 0.19 (95% CI = 0.07-0.52, p = 0.001). Heavy coffee consumption confirmed the inverse association between coffee and PD (more than 81 cup/year vs. none: OR = 0.20, 95% CI = 0.08-0.47, p ≤ 0.0001). Conclusions: Consistent with previous studies, our results suggest an inverse association between coffee drinking, alcohol consumption and PD. The multiple inverse association observed may indicate a complex interaction between genetic and environmental factors. Copyright © 2003 S. Karger AG, Basel
Modulation of gluteus medius strength by Yang Qiao Mai stimulation: a multiple case report
No full textModulation of Gluteus Medius Strength by Yang Qiao Mai Stimulation: A Multiple Case Report
No full textYang Qiao Mai, one of the eight channels known as extraordinary meridians, is used in traditional Chinese medicine (TCM) to relieve tension in the lateral muscles of the legs.
According to TCM, each extraordinary vessel has main points, coalescent points, and one single master point (BL62 Shenmai for Yang Qiao Mai), which can influence the entire path of the meridian.
We performed a test which involved measuring the changes in abduction strength of the gluteus medius following stimulation with a new type of photobiomodulation device, which delivers a very low level of modulated light on the BL62 Shenmai acupuncture point. Twenty-two healthy volunteers were measured, stimulated, and the measurement repeated 30 minutes after the first measurement. In addition to showing a regulatory effect of the stimulation, the test confirmed that a modulated red-light emission with a stimulus duration of 20 s for a total delivered energy of 0.35 mJ can induce an acupuncture-like response, even in the short term. The difference between the two body sides generally results as being around 6 Kg: this figure appears to be a physiological limit, probably due to an anatomical compensation of the body asymmetries.
These results offer a new insight into the interpretation of the signaling process along the meridians, and appears to involve the return to homeostasis of the extracellular soft tissue matrix promoted by the photon flow
Diagnosis, treatment planning and orthodontic treatment in patients with ameloblastoma
No full textAim: The aim of the study is basically to underline the advantages of the digital approach for the diagnosis, the treatment plan and the surgical and orthodontic treatment in the patients affected by ameloblastoma. Materials and methods: A patient affected by ameloblastoma of the upper maxilla underwent to a digital approach for the exact diagnosis and the virtual planning of the post-surgery orthodontic treatment using aligners. A 3D computer tomography was used to a precise detection of the anatomical limits of the neoformation. A concomitant myofunctional therapy was performed with a complete occlusal and functional restoration.Results: A complete alignment of the residual dentition was achieved. The functional and esthetic outcome was completed using a temporary removable prosthesis waiting for a bone grafting and implant supported fixed restoration.Conclusion: In patients with ameloblastoma the digital approach for a correct diagnosis and treatment planning with aligner can be extremely useful for a detailed control of the orthodontic movements together with an accurate virtual and clinical control of all the aspect that can interfere with the occlusion
Diagnosis, treatment planning and orthodontic treatment in patients with ameloblastoma
No full textAim: The aim of the study is basically to underline the advantages of the digital approach for the diagnosis, the treatment plan and the surgical and orthodontic treatment in the patients affected by ameloblastoma. Materials and methods: A patient affected by ameloblastoma of the upper maxilla underwent to a digital approach for the exact diagnosis and the virtual planning of the post-surgery orthodontic treatment using aligners. A 3D computer tomography was used to a precise detection of the anatomical limits of the neoformation. A concomitant myofunctional therapy was performed with a complete occlusal and functional restoration. Results: A complete alignment of the residual dentition was achieved. The functional and esthetic outcome was completed using a temporary removable prosthesis waiting for a bone grafting and implant supported fixed restoration. Conclusion: In patients with ameloblastoma the digital approach for a correct diagnosis and treatment planning with aligner can be extremely useful for a detailed control of the orthodontic movements together with an accurate virtual and clinical control of all the aspect that can interfere with the occlusion
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
- …
