1,721,064 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
Disturbo psichico in periodo perinatale : analisi epidemiologica registrata presso l’ambulatorio di consulenza psichiatrica e psicoterapeutica in gravidanza e puerperio
No full textIntroduzione: Il periodo perinatale è caratterizzato da numerosi cambiamenti e fattori di stress, che incidono sulla vita della donna e la rendono maggiormente vulnerabile all'insorgenza o al peggioramento di disturbi psichici. I disturbi principali risultano essere i disturbi d'ansia e i disturbi dell'umore, in particolare la depressione; queste patologie possono manifestarsi singolarmente o in contemporanea, sia in donne che hanno un'anamnesi remota positiva sia in donne che non hanno mai avuto sintomi in precedenza. Anche altri disturbi, inclusi i disordini alimentari, gli attacchi di panico, il disturbo d'ansia generalizzata (GAD), il disturbo ossessivo- compulsivo (DOC) e il disturbo post-traumatico da stress (PTSD) possono verificarsi singolarmente o insieme alla depressione. Casi più gravi ma che si presentano più raramente sono la schizofrenia e la psicosi puerperale. Le patologie psichiatriche possono avere effetti negativi non solo sulla salute della madre ma anche sullo sviluppo fisico, cognitivo ed emozionale del bambino, per questo la diagnosi e il tempestivo trattamento sono fondamentali.
Obiettivi della ricerca: Lo scopo di questa ricerca è, in primo luogo, quello di definire le caratteristiche socio-demografiche, l'anamnesi ostetrica e l'anamnesi psichiatrica delle donne seguite presso l'Ambulatorio di consulenza psichiatrica e psicoterapeutica in gravidanza e puerperio della Fondazione IRCCS Ca' Granda – Ospedale Maggiore Policlinico. In secondo luogo la tesi si propone di individuare le figure professionali che per prime possono intuire il disagio psichico della donna, ripercorrendone l'iter diagnostico, con particolare focus sul ruolo dell'ostetrica nell'invio.
Materiali e metodi: L'indagine è stata effettuata nel periodo compreso tra luglio e settembre 2016. Il campione di donne è stato reclutato presso l'Ambulatorio di consulenza psichiatrica e psicoterapeutica in gravidanza e puerperio della Fondazione IRCCS Ca' Granda – Ospedale Maggiore Policlinico, previa consultazione delle cartelle cliniche cartacee. Sono state consultate un totale di 403 cartelle cliniche, dalle quali è stato reclutato un campione di 88 donne, che hanno frequentato l'ambulatorio nel periodo tra il 2008 e il 2016.
Risultati: I disturbi più frequentemente riscontrati nelle donne seguite presso l'ambulatorio risultano essere l'ansia e la depressione, sia che questi si presentino in contemporanea (35% sul totale delle donne), sia singolarmente (ansia= 9%; depressione 8%, depressione post partum= 11%). I sintomi vengono individuati nel 66% dei casi da professionisti che si occupano di salute materno-infantile, quali ginecologi, ostetriche e neonatologi. Nel 32% dei casi la diagnosi viene fatta da professionisti della salute psichica, quali psichiatri e psicologi. Come raccomandato dalla letteratura, la gestione di queste patologie dovrebbe avvenire mediante un approccio multidisciplinare, che preveda condivisione di protocolli d'intervento comuni, per quanto riguarda la prevenzione, la diagnosi e il successivo management
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
Pressure-flow relationship in swine ureter:effect of NO-synthase inhibition by L-NAME
No full textIntroduction: The purpose of this report is to elucidate the possible role of nitric oxide (NO) in modulating smooth muscle tone of swine ureteral wall and its hydraulic resistance to urinary flow. Materials and Methods: We performed direct monitoring of perfusion pressure for different flows in isolated fresh swine ureter. Fluid used for perfusions was saline or L-NAME 200 mu mol saline added, and relative pressure-flow relationships were obtained. Results: The general shape of pressure-flow relationships indicates a decrease of ureteral hydraulic resistance with increasing flow. NO synthase inhibition by L-NAME caused a statistically significant increase of perfusion pressures for every tested flow, hence of ureteral hydraulic resistance. Conclusions: Our data show an effective role of NO in modulating ureteral flow resistance, and suggest possible pharmacological implications. A simple mathematical approach to define hydraulic ureteral flow resistance for low and high urinary flows is also suggested. Copyright (C) 2009 S. Karger AG, Base
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
ON THE FINITE ELEMENT STABILITY ANALYSIS OF SLOPESUNDER INCREASING PORE WATER PRESSURE
No full textA discussion is presented of the influence of the hydraulic boundary
conditions on the finite element stability analysis of a river levee. The problem concerns an embankment built on a low-permeability soil layer overlying a coarse-grained deposit. It is shown that the finite element calculations could predict stable or unstable conditions of the
levee depending on the assumed distance between the river and the external boundary of the mesh where the water table is assumed undisturbed. The causes of this notable drawback are discussed, showing that they derive from the marked influence that the mentioned distance has on the calculated pore pressure distribution below the embankment. The calibration of a proper numerical seepage model, based on the back analysis of piezometer measurements, is suggested as a possible way to limit the observed boundary effects
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
- …
