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
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
Cocaine and aortic dissection: the need for collaboration to overcome the underreporting bias
Full text linkThe dissection of the aorta is a serious and potentially fatal consequence of cocaine use. Nonetheless, the underlying mechanisms and characteristics of this phenomenon remain to be deeply studied. The autopsy case of a 46-year-old white male found irresponsive and unconscious in his house and had a history of abusing cocaine is presented. Autopsy findings showed aortic arch and thoracic aorta of regular calibre, with evidence of a mid-adventitial dissecting aneurysm of the ascending intrapericardial portion of the aorta. Forensic toxicological analyses evidenced a positivity to cocaine and its main metabolite, benzoylecgonine, in all fluids (peripheral blood, bile and urine), liver and brain homogenates. Data also evidenced a positivity to alcohol, confirming a past history of intake. The presented case confirms the connection between cocaine addiction and the risk of aortic dissection, emphasizing the need for increased knowledge about the risks connected to this drug. It is emphasized the need of prompt examination and effective treatment of patients exhibiting cardiac symptoms linked to cocaine use, as well as the need of an accurate anamnesis to evidence use/abuse of other cardiotoxic substances
Proteomics for forensic identification of saliva and vomit in a case of alleged rape
No full textIn crime investigations, the unambiguous identification of biological traces can be decisive for framing the events. In this study, we applied proteomics to analyze scant amounts of biological residues in the context of an alleged rape case, focusing on the detection of traces of vomit. We used high-performance liquid chromatography-tandem mass spectrometry (HPLC–MS/MS) and two distinct proteomic workflows to identify proteins and possible proteolytic peptides in biological residues from clothing, bedding, and car upholstery from the alleged crime scene. Specifically, a fragment of pillowcase contained a protein pattern indicative of human saliva and a complex panel of peptides resulting from extensive hydrolysis of salivary proteins. The presence of partly digested proteins from bovine meat, wheat, and eggs, along with salivary and gastric enzymes, demonstrated the presence of vomit on the alleged victim’s trousers, also providing insights into the recently consumed meal. A drop of cow’s milk on the seat of the suspect’s car was likely irrelevant to the criminal act. Other fabric samples showed only common contaminants, excluding significant biological traces or food-derived proteins. These findings support the judicial decision regarding consent to sexual intercourse, for which DNA individualization lacks evidentiary power, and establish a reference for annotating saliva and vomit traces in forensic investigations
Limits and pitfalls in a lethal infant cocaine intoxication
Full text linkThe case concerns the first Italian report of a fatal cocaine intoxication
in an 8-month-old baby girl found dead in the cradle by her
parents at 6 am on a summer day. At arrival to the emergency
department, the doctors declared the baby dead and the
Prosecutor Office ordered an autopsy and toxicological analyses.
Despite no history of cocaine use/abuse by both parents, toxicological
analyses evidenced a positivity to cocaine in the post-mortem
blood, brain and liver. The legal physician concluded for a fatal
cocaine intoxication. A crucial aspect to the Court was to discriminate
between administration (accidental or voluntary) and intake
(almost accidentally), due to different legal consequences for parents
(i.e. voluntary homicide or inadequate supervision). In the here
presented case discriminating the exact intake was almost impossible
in terms of certainty. Such difficulty mainly derived from lacks
in the investigation activities in the first hours following the death.
Among all possible intake routes, the ‘most probable’ was the
accidental one, mostly attributable to a cradle contamination.
A lack in the site inspection protocol could strongly affect the
case solution making it impossible to offer the Court a definitive
‘scientific’ solution to the case (based on scientifically irrefutable
data)
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
- …
