1,721,065 research outputs found
Entrapment of the Temporal Horn as a cause of pure Wernicke aphasia: case report.
No full textEntrapment of the temporal horn is an extremely rare pathologic condition occurring as a result of surgery for tumors, intraventricular infections, hemorrhage, or traumatic events involving the peritrigonal area. We report a case of a 58-year-old man who presented with pure Wernicke aphasia (never described before in the albeit rare cases of isolated temporal horn dilatation) that regressed completely following successful ventriculoperitoneal shunting. The relevant literature is also briefly reviewed
Practical importance of CT scan in the treatment of intracranial aneurysm. Report on one case [LE ROLE PRATIQUE DE LA TDM DANS LE TRAITEMENT DES ANEVRYSMES INTRACRANIENS. A PROPOS D'UN CAS]
No full textThe author reports on a case of MCA aneurysm for which the decision to operate was based above all on the CT examination. In this regard the practical importance of the CT in diagnosis and treatment of subarachnoid hemorrhage (SAH) is again emphasized
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
Subependymoma of septum pellucidum presenting with cough and exertional headache: a case report of spontaneous regression after incomplete surgical removal.
Full text linkSubependymoma is a rare intraventricular tumor usually located in the fourth (50–60%) and lateral ventricles (30–40%), less frequently in the septum pellucidum and spinal cord 1,2. Symptoms are related to CSF obstruction with headache as main symptom. Valsalva-related headache and transient altered mental status were rarely described 3. Headache induced by Valsalva manoeuvre is usually considered an alarm symptom of intracranial lesions4. Here, we report a case of Valsalva-related headache due to subependymoma of septum pellucidum
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
Medical treatment of subarachnoid hemorrhage due to rupture of an intracranial saccular aneurysm [LA TERAPIA MEDICA NEL TRATTAMENTO DELL'EMORRAGIA SUBARACNOIDEA DA ROTTURA DI ANEURISMA SACCULARE INTRACRANICO]
No full textThe author has reviewed the problem of conservative care of subarachnoid hemorrhage (SAH) due to ruptured intracranial aneurysms. A retrospective study was performed, comparing two different antifibrinolytic therapeutic modalities, in order to investigate whether one of the two would have led to lower complications rate. 131 patients with recently ruptured intracranial aneurysms were treated according to two different methodics: AMCA, 3 gm/day, combined with Aprotinine, 3-400,000 K.I.U./day; and AMCA, 6 gm/day. Patients of both differently treated groups showed similar rate of rebleeding and of thromboembolic complications, while those treated with the modality 'B' showed a higher rate of ischemic complications and of post-SAH hydrocephalus. The fact that this study is retrospective leads to consider carefully the above results. Nevertheless, there are reasonable preliminaries in order to support a larger use of this modality 'A'. The question of surgical timing is also briefly discussed. In the last years most surgeons were used to operate not less than 8-10 days after SAH. However, recently several authors have supported early surgery, mainly on the basis of pathophysiological considerations. A New Multicenter International Cooperative Study has been organized in order to correlate the results of surgical management of intracranial aneurysms to the interval SAH-operation. This would possible give an important contribution to the clarification of this debated problem
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