1,720,993 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Get PDFWe 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
Thoracoscopy in thoracic diseases in young children
Get PDFSummary.
The authors report a clinical case of a 35-day-old infant with
multiloculated thoracic empyema successfully operated upon by the surgical
team. The infant was transferred from a regional medical institution with fever,
low productive cough and dyspnea. The disease started 7 days earlier, but
despite the antibiotic treatment for 5 days in the hospital at his place of
residence, the child's condition continued to worsen, therefore he was
transferred to the pediatric intesive care unit in our institute. After admission,
CT investigation revealed massive closed fluid collections with subpleural
localization in the right hemithorax and in projection of anterior mediastinum
associated with subtotal atelectasis of the right lung, closed pleurisy without
signs of destruction of lung tissue, suspected intrathoracic cystic lymphangioma. The patient underwent video-assisted thoracoscopic surgery which
identified several purulent localized collections which were opened and drained
in a volume of about 200ml of viscous purulent fluid. The postoperative period
evolved difficultly, but favorable. 6 months later, the CT and scintigraphy
revealed some insignificant residual lung changes and diffuse perfusion
changes which confirmed the slow regression of the septic inflammatory
process of the pleural cavity after the resolution.The authors conclude that the
presented case highlights the difficulties of imaging differential diagnosis and
suggests that VATS is an effective and safe treatment option for infants with
pleural empyema, especially in multiloculated fibrinopurulent forms, which
allows a favorable evolution with a low duration of thoracostomy with tube and
comparatively short recovery and hospitalization period.Rezumat.
Autorii raportează un caz clinic al unui copil de 35 de zile cu empiem
toracic multiloculat operat cu succes de echipa chirurgicală. Copilul a fost
transferat de la o instituție medicală regională cu febră, tuse slab-productivă și
dispnee. Boala a debutat cu 7 zile mai devreme, dar în ciuda tratamentului cu
antibiotic timp de 5 zile în spitalul de la locul de trai, starea copilului a
continuat să se agraveze, fapt pentru care a fost transferat în secția de Terapie
intensivă din Institutul Mamei și Copilului. După internare, tomografia
computerizată a toracelui a evidențiat colecții lichidiene masive închistate cu
localizare subpleurală în hemitoracele drept și în proiecția mediastinului
anterior asociate cu atelectazie subtotală a plămânului drept, pleurezie
închistată fără semne de distrugere a țesutului pulmonar, suspiciune la
limfangiom chistic intratoracic. Pacientul a fost supus unei intervenții
chirurgicale toracoscopice video-asistate prin care au fost identificate mai multe
colecții purulente localizate care au fost deschise și drenate într-un volum de
circa 200 ml de lichid purulent vâscos. Perioada postoperatorie a evoluat greu,
dar favorabil. 6 luni mai târziu, tomografia computerizată și scintigrafia au
evidențiat unele modificări pulmonare reziduale nesemnificative și modificări
difuze de perfuzie care au confirmat regresia lentă a procesului inflamator
septic al cavității pleurale după rezoluție. Autorii concluzionează că cazul
prezentat evidențiază dificultățile diagnosticului diferențial imagistic și
sugerează că VATS este o opțiune de tratament eficientă și sigură pentru
sugarii cu empiem pleural, în special în formele fibrino-purulente multiloculate,
ceea ce permite o evoluție favorabilă cu o durată redusă a toracostomiei cu tub
și o perioadă de recuperare și spitalizare relativ scurtă
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
Scientific concepts into clinical application of amniotic membrane in reconstructive surgery (literature review)
Get PDFLaboratorul «Infecţii chirurgicale la copii», USMF ”Nicolae
Testemiţanu”, Secţia chirurgie septică a IMSP Institutul Mamei și CopiluluiÎn lucrare autorii prezintă caracteristicile biologice ale membranei amniotice umane ca o sursă valoroasă de materiale pentru ingineria tisulară, inclusiv de
celule stem cu un potențial scăzut de imunogenitate și cu proprietăți imunomodulatoare. Sunt descrise domeniile de utilizare ale membranei amniotice în
chirurgia reconstructivă, inclusiv în plastia defectelor abdominale congenitale și a celor dobândite, avantajele utilizării membranei amniotice ca substituent
al pielii constând în faptul că epiteliul amniotic oferă o protecție acceptabilă împotriva modificărilor patologice determinate de evaporare, precum și funcția
de barieră, în timp ce fibronectina și colagenul matricei oferă unele funcții dermice. Dezavantajele utilizării membranei amniotice sunt: dificultatea obținerii,
pregătirea și păstrarea, potențialul semnificativ de transmitere a unor boli infecțioase.The authors present the biological characteristics of human amniotic membrane as a valuable source of material for tissue engineering, including stem
cells with a low potential for immunogenicity and immunomodulatory properties. The areas of use of amniotic membrane in reconstructive surgery are
described, including plastic surgery of congenital and acquired abdominal defects. The advantages of using the amniotic membrane, as a substitute for
skin, are that the amniotic epithelium provides an acceptable protection against pathological changes caused by evaporation and barrier function, while
fibronectine and matrix collagen provide some dermal functions. The disadvantages of using the amniotic membrane are: difficulty to obtain, prepare and
preserve it, as well as a significant potential for transmission of some infectious diseases
Aspecte biologice şi consideraţiuni clinico-evolutive în chistul hidatic pulmonar
Get PDFUniversitatea de Stat de Medicină şi Farmacie „Nicolae Testemiţanu”,
IMSP Institutul Mamei şi Copilulu
- …
