1,720,978 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
Strongyloides stercoralis hyperinfection in an immunosuppressed dog from France
No full textStrongyloides stercoralis is a threadworm, whose adult females parasitize the small
intestine of mammals causing severe clinical presentations in immunosuppressed animals and
puppies. A 10-month-old male Chihuahua dog was referred due to chronic diarrhoeic haematochezia,
hematemesis, weight loss, pruritus and cough. During the clinical examination, severe
weight loss and alopecia on the abdomen were observed. Stool examinations revealed the
presence of alive larvae of S. stercoralis, as well as cysts and trophozoites of Giardia duodenalis.
The negativity to S. stercoralis infection was achieved only after administration of
ivermectin. Results of this study confirm that routine copromicroscopic methods may fail to
diagnose S. stercoralis infection. In addition, although fenbendazole is considered the drug of
choice for the treatment of canine strongyloidiasis, ivermectin may be a valid alternative
Neuropsychiatric disorders in hip fracture patients
No full textHip fractures in elderly patients are a major health problem in the industrialised world. Italy records more than 85,000 hip fractures/year; 77% of these occur in women, 79% of whom are aged over 75 years (data from Italian Health Ministry discharge records for 2005).Hip fractures generate 30% of overall hospitalisation costs. It is calculated that, in the over-65s alone, the annual cost of fractures exceeds 1 billion euros.The incidence of this disease is increasing constantly, and it is predicted that by 2030 there will be around 750,000 new cases in Europe each year (data from Italian Health Ministry discharge records for 2006).This is an extremely interesting phenomenon, not only from the economic and organisational perspectives, but also as regards the profile of healthcare required, given that hip fractures are often associated with a worsening of quality of life and increased mortality.Elderly fracture patients generally have comorbidities that need to be assessed before and after surgery. Recommendations for the care of these patients include: early surgical intervention, use of prophylactic antibiotics and thromboembolic prophylaxis, good control of perioperative pain to improve ambulation, prevention of malnutrition, urinary tract management, osteoporosis management and the promotion of early mobilisation to improve functional recovery; it is also necessary to detect and manage delirium and other cognitive disorders in order to reduce the risk of complications and of institutionalisation.Neuropsychiatric disorders such as dementia and delirium increase the mortality of these patients in the six months following hip fracture, while depression can have a negative effect on functional outcome and survival in the longer term. Delirium in hip fracture patients seems to be different from that observed in other types of patient, showing a different clinical course.Delirium is a frequent post-operative complication in elderly patients treated for hip fracture. Several fundamental factors have been identified in the genesis of this comorbidity. The use of psychotropic drugs in the preoperative period seems to significantly increase the risk of developing postoperative delirium.Hyperactive delirium, characterised by increased pyschomotor activity, agitation and behavioural disturbances, is the delirium subtype most often encountered in patients with proximal femur fractures.In short, cognitive and mood disorders in elderly hip fracture patients are associated with an increased risk of poor functional outcome and of reduced survival. Therefore, identification and treatment of these conditions is central to a correct therapeutic approach to the fragile elderly patient with hip fractur
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
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
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