1,720,999 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
Document An unusual case of excessive sweating affecting the right upper limb after bilateral endoscopic thoracic sympathectomy for primary palmar hyperhidrosis: recurrence or compensatory hyperhidrosis?
No full textVariations 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
Single Access Videothoracoscopic Biopsy and Talc Pleurodesis in Patients With Malignant Pleural Effusion
No full textAim-Background: Recurrent pleural effusion is frequently observed in clinical experience and malignancy is one of the most frequent causes. Although it is generally necessary to prevent the recurrence of effusion in patients with disseminated neoplastic disease, in others, a diagnosis is required. The aim of this study was to determine the efficacy and safety of biopsy and pleurodesis by a single access videothoracoscopic approach. Methods: We report a consecutive series of 20 patients (12 men, 8 women, aged 39 to 83 years) who underwent single access videothoracoscopy with pleural biopsy and talc pleurodesis for recurrent pleural effusion. In all cases, indication for the procedure was a recurrent pleural effusion, suspicious for malignancy.
Videothoracoscopy was performed under general anaesthesia. For pleurodesis, an average of 8g of sterile talc powder was used. A six-month follow-up was completed for all patients, and efficacy was judged by clinical examination and chest X-ray.
Results: Diagnosis was obtained in all cases. In five cases, the diagnosis was a pleural involvement by breast cancer metastasis, and in four cases, a primary lung cancer was detected. Eight were mesotheliomas and one a parapneumonic collection. In two cases, an unknown-malignancy recurrent pleural effusion was observed. No deaths, talc-induced ARDS or malignant
invasion of the scar occurred, but only a postoperative empyema and two subcutaneous emphysemas treated successfully without further operation. Conclusions: Single access videothoracoscopic pleural biopsy and talc pleurodesis is a safe and effective
method for the diagnosis and treatment of malignant pleural effusions
Correction of an end colostomy prolapse with the Delorme technique: A case report
No full text" INTRODUCTION: We report a case of correction of an end colostomy prolapse with Delorme technique in an advanced stage oncologic patient to emphasize the clinical implications and advantages of this procedure. CASE REPORT: A 51-year-old male patient with a stage IV rectal adenocarcinoma underwent laparoscopy for a palliative end colostomy at our institution. Approximately 6 months later, a prolapse of the colostomy occurred during chemotherapeutic treatment. The patient complained of progressive onset of pain and bleeding during defecation as well as difficulty managing the pouch system. Given the stage of the disease and the on-going chemotherapy, a minimally invasive approach was desirable for prolapse correction and we opted for the Delorme procedure under local anesthesia. The postoperative course was excellent with no complications, the symptoms regressed rapidly, and defecation was normal immediately after surgery. The patient was discharged on the second post-operative day. After discharge the stoma was periodically controlled, confirming the success of the procedure. The last clinical evaluation was performed 3 months after surgery and stability was observed. CONCLUSIONS: The Delorme technique is a minimally invasive procedure used to correct an end colostomy prolapse. This technique guarantees excellent results in selected patients and permits the avoidance of more invasive procedures.
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
- …
