1,721,186 research outputs found
Neobruchidius lovie, new genus and new species from Latin America (Coleoptera: Chrysomelidae: Bruchinae)
No full textJohnson, C. D., Romero-Napoles, J. (2006): Neobruchidius lovie, new genus and new species from Latin America (Coleoptera: Chrysomelidae: Bruchinae). Zootaxa 1123: 57-68, DOI: 10.5281/zenodo.17175
FIGURE 4 in Neobruchidius lovie, new genus and new species from Latin America (Coleoptera: Chrysomelidae: Bruchinae)
No full textFIGURE 4. Neobruchidius lovie, median lobe, FIGURE 5. Neobruchidius lovie, lateral lobes, male genitalia, ventral view. male genitalia, ventral view.Published as part of Johnson, C. D. & Romero-Napoles, J., 2006, Neobruchidius lovie, new genus and new species from Latin America (Coleoptera: Chrysomelidae: Bruchinae), pp. 57-68 in Zootaxa 1123 on page 67, DOI: 10.5281/zenodo.17175
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
Surgical excision alone is adequate treatment for primary colorectal cancer
No full textThis debate examines the arguments for and against the proposal that surgical excision alone is adequate treatment for primary colorectal cancer. The arguments in faviour are that the results from curative surgery are excellent and that despite many trials of adjuvant chemotherapy, radiotherapy and immunotherapy, the proposed benefits remain unproven. Recent improvements in surgical technique, particularly for dissection of rectal tumours, have shown the way towards further improvement using surgery alone, and it is clear from a national survey that technical factors related to individual surgeons play a large part in determining recurrence rates. With optimum primary treatment, surgical excision alone is indeed adequate therapy. The arguments against this motion are that although a considerable number of patients do survive with surgery, the 5-year survival rate is poor when there is extensive local invasion of lymphatic metastases. Surgery starts therapy by reducing the tumour load, but other modalities are required to destroy the cells which might subsequently develop into metastases. Trial results with adjuvant therapy are encouraging, although many contain too few patients. We cannot be content with the results of treatment of Dukes' Stage B and C tumours; more trials are needed to determine the best treatment for these patients.</p
Clinical, emotional and social factors associated with quality of life in chronic pancreatitis.
No full textBackground: In chronic pancreatitis (CP), a debilitating, progressive and incurable disease, patients' wellbeing is considerably impaired, but the different factors affecting quality of life (QoL), have not been identified yet. Methods: 69 patients with CP were evaluated (M/F 55/14; mean age 46.6 +/- 10.05 years). Different degrees of pancreatic damage were defined using the Cambridge classification; pain intensity and frequency were assessed using pain index. QoL was measured using EORTC QLQ-C30 and the PAN26 questionnaire. Although developed for pancreatic cancer, the C30/PAN26 has been validated for chronic pancreatitis.Results: Digestive symptoms, financial difficulties, fear of future health and general pain scales showed considerable effects of CP on QoL. We observed significant negative correlation between mean QoL scores and pain index in almost all domains (p < 0.001, p < 0.05). Pain intensity affects QoL scales more often than pain frequency. BMI correlated positively with QoL in global health status, altered bowel habits, body image and satisfaction with health care domains (p < 0.01, p < 0.05). Conclusion: Pain index, BMI, Cambridge classification and disease duration are the most important factors adversely affecting QoL in CP. Measurement of QoL is essential in the disease management and improves the knowledge of psychosocial functioning of these patients. and IAP
An aqueous formulation of gamma-linolenic acid with anti-proliferative action on human pancreatic cancer cell lines
No full textEssential fatty acids, especially [gamma]-linolenic acid (GLA), have been shown to directly inhibit the growth of cancer cell lines in culture. The aim of this study was to see whether an aqueous formulation of GLA works as well as the lithium-based salt. We evaluated the effect of the 1-deoxy-1-methylamino-D-glucitol salt of GLA (MeGLA) on the growth of two human pancreatic cancer cell lines (Panc-1 and MIA PaCa-2) in vitro, and compared its effects with a previously studied formulation, lithium GLA (LiGLA). The effect of time exposure (2-7 days) and difference in concentration (0-1000 [mu]mol/l) were studied using 96-well culture plates. Cell growth was assessed by MTT assay. Control experiments were performed with meglumine alone in similar concentrations. MeGLA had cytostatic and cytotoxic effects on pancreatic cancer cell lines with 50% growth inhibition at 30-100 [mu]mol/l and cytotoxic effects at 60-250 [mu]mol/l. The degree of growth inhibition increased with time of exposure to MeGLA. The anti-proliferative effects of MeGLA were similar to those previously observed with LiGLA. We conclude that MeGLA has equivalent anti-proliferative activity to LiGLA when tested in vitro against pancreatic cancer cell lines and is therefore a suitable alternative to LiGLA for investigation of the in vivo activity of GLA against pancreatic adenocarcinomas
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
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