1,720,988 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
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
La capsulite adesiva della spalla post traumatica nello sciatore
No full textShoulder adhesive capsulitis is a pathological condition characterized by an involvement of the glenohumeral
capsula and ligaments with a progressive and severe reduction of the range of motion.
Frozen shoulder often comes on for seemingly no reason at all (primary type) but may follow a
trauma or shoulder sugery (secondary type). There are three phases to frozen shoulder:
- Freezing (painful phase, 1-8 months)
- Frozen (stiff phase, 9-16 months)
- Thawing (recovery of mobility, 12-40 months)
Methods
Authors refer their experience from 2002 to 2005 with 25 severe frozen shoulders. Fifteen patients (6
males and 9 females with a mean age of 57 years: range 26 to 68 years) underwent arthroscopic
capsular release and closed manipulation (group A). A second group of 10 patients (6 females and 4
males with a mean age of 52 years, range 35 to 65 years) were treated with intra-articular corticosteroid
injections and rehabilitation (Group B).
In group A this syndrome followed a shoulder trauma in only two patients and a rotator cuff tear with
progressive loss of motion in four patients; no etiologic cause was found in nine patients. Among
these patients, authors report a case of a 37 years female who developed a frozen shoulder after a great
tuberosity fracture occurred during alpine skiing.
In group B one patient present a MRI with a partial supraspinatus tear and one snowboarder
developed frozen shoulder after surgical treatment for a partial articular tear.
All the patients were evaluated by international functional scoring scales (American Shoulder and
Elbow Surgeons Standardized Shoulder Assessment Form –ASES-, Constant and Murley, Simple
Shoulder Test and UCLA).
Results
The pre-operative range of motion of the shoulder in group A was measured with goniometry (side to
side); the mean abduction of the involved shoulder was 60°; the mean external rotation 20°, the mean
flexion 75°; during the internal rotation patients were never able to reach the lumbo-sacral vertebra.
Under general anesthesia, twelve patients underwent shoulder manipulation and arthroscopic capsular
release, while in three patients authors performed a mobilization of the shoulder after the arthroscopic
release. A subacromial bursectomy was executed in all cases; an acromioplasty was done only in three
patients with subacromial impingement and a tenotomy of the long head of biceps was done in one
patient because of sever tendinosis. All the patients with a rotator cuff tear (four) underwent an
arthroscopic suture (in two cases delayed after recovery of full range of motion).
At a mean follow-up of 15 months (range 3 to 45 months) were reviewed all the patients of group A.
They all referred an improvement in range of motion and a decrease of pain. Post- operative physical
examination showed a mean abduction of nearly 150°, a mean ER of 45° and a mean flexion of 165°;
fourteen patients were able to reach the lumbo-sacral junction during the internal rotation. All the postop
functional evaluation scales also showed relevant improvements. There was any case of fracture,
dislocation or other complication.
Results of group B are still under review because of their short follow up; however preliminary results
are encouraging.
Conclusion
In patients with severe adhesive capsulitis, the goal of treatment is pain reduction and recovery of
shoulder mobility. Patients with frozen shoulder unresponsive to traditional conservative treatment can
be effectively treated with arthroscopic capsular release and closed manipulation. Anyway, the second
group of patients treated by intra-articular corticosteroid injections seems to show encouraging
preliminary results, resolving in some cases the frozen shoulder and avoiding surgical treatment. More
detailed studies are necessary to establish if gleno-humeral infiltrations may represent first choice
treatment in severe adhesive capsulitis of the shoulder
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
Failure: Analysis of an Engineering Concept
No full textThis thesis is an attempt to clarify a concept we are all familiar with, engineers and non-engineers alike. It shows that, behind the first impression of familiarity, there is a wide range of intuitions about failure which are not easily reconciled. While the ensuing ambiguities and lack of clarity may be tolerated in ordinary circumstances, engineers strive for precision and efficiency. These qualities become even more relevant given that engineering activities are increasingly carried out by multidisciplinary and multicultural teams. The chapters included in this thesis illustrate that pursuing conceptual clarification may result in valuable contributions to the existing literature. The identification of tacit assumptions that, so far, have gone undetected can help bringing some degree of order and unity to discussions that have shown a tendency towards fragmentation along disciplinary boundaries. As a whole, these chapters constitute the preliminaries of a conceptual framework that, once supplemented with additional engineering and philosophical contributions, may embrace the multiple facets of failure; a rather complex tangle of phenomena which, despite engineers’ efforts to rein it in, is not going to disappear from the engineering agenda anytime soon.Values, Technology and InnovationTechnology, Policy and Managemen
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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