1,720,957 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
Talamotomia stereotactică cu navigare teleradiografică intraoperatorie în tratamentul patologiilor sistemului extrapiramidal
Full text linkIntroduction: Parkinson’s disease (PD) remains a progressive disease, where both pharmacological and surgical treatment are not always successful. In Europe, the prevalence
and incidence PD is estimated at 11-19 / 100,000 per year.
2/3 of patients suffering from PD > 10 years have an advanced degree of disability. Aim: The aim of the paper is to
present our experience in stereotactic surgery in movement
disorders, new thalamotomy methods, targets, intraoperative electrophysiological control, and selection of patients
eligible for surgery. Materials and methods: Over 150 stereotactic interventions were performed at INN, among which: unilateral, staged bilateral thalamotomies. Depending
on the form of PD, the most appropriate basal nucleus was
selected: VOA; VOP; VIM. Results: In the initial stages of stereotactic surgery in PD, their efficiency reached 60%. The
development of methods and devices has allowed the study
of pathophysiological, as a system and has allowed the understanding of interconnections and the role of structures in
the occurrence and maintenance of symptoms. The results
of the operation were assessed on a 5-point scale from well
to worsening of symptoms. All patients were evaluated >1
year postoperatively. Over 70% of the results of the operations were classified as good. Conclusions: Thalamotomies
remain highly effective as a treatment option for PD. Compared to non-invasive methods such as (Gamma-knife and
Ultrasound) allow obtaining and controlling the result intraoperatively, the accuracy confirmed by teleradiography.
In addition, with DBS it does not require the implantation
of electrodes and their maintenance. At the same time, are
cost effective.Introducere: Boala Parkinson (BP) rămâne a fi o boală progresivă, unde tratamentul farmacologic cât și cel chirurgical,
nu tot timpul au succes. În Europa, prevalența și incidența
BP se estimează la 11-19/100 mii pe an. 2/3 din pacienții
care suferă de BP >10 ani prezintă un grad de dizabilitate
avansat. Scopul lucrării: Este de a prezenta experiența
noastră în chirurgia stereotactică în tulburările de mișcare. Noi metode de talamotomie, structuri țintă, controlului
electrofiziologic intraoperator și selecției pacienților eligibili pentru chirurgie. Materiale și metode: În cadrul INN
au fost efectuate peste 150 intervenții stereotactice. Printre
care: talamotomii unilaterale, bilaterale etapizate. În dependență de forma BP a fost selectat cel mai adecvat nucleu
bazal: VOA; VOP; VIM. Rezultate: În etapele inițiale ale chirurgiei stereotactice în BP eficiența intervențiilor era 60%.
Dezvoltarea metodelor și dispozitivelor au permis studierea mecanismelor patofiziologice, în ansamblu la nivel de
sistem și a permis înțelegerea interconexiunilor și rolului
structurilor în apariția și menținerea simptomelor. Rezultatele operației au fost apreciate pe o scara de 5 puncte de la
bine la agravarea simptomelor. Toți pacienții au fost evaluați
peste 1 an postoperator. Peste 70% din rezultatele operațiilor au fost catalogate drept bune. Concluzii: Talamotomiile
rămân a avea o eficiență înaltă ca opțiune de tratament al
BP. Comparativ cu metodele neinvazive precum (Gama-knife si Ultrasunet) permit obținerea și controlul rezultatului
introperator, exactitatea confirmata prin teleradiografie. Iar
cu DBS-ul nu necesită implantarea electrozilor și mentenanța acestora. În același timp, fiind cost eficiente
Stereotactic thalamotomy with intraoperative teleradiographic navigation in the treatment of extrapyramidal system pathologies
Full text linkIntroducere: Boala Parkinson (BP) rămâne a fi o boală progresivă, unde tratamentul farmacologic cât și cel chirurgical, nu tot timpul au succes. În Europa, prevalența și incidența BP se estimează la 11-19/100 mii pe an. 2/3 din pacienții care suferă de BP >10 ani prezintă un grad de dizabilitate avansat. Scopul lucrării: Este de a prezenta experiența noastră în chirurgia stereotactică în tulburările de mișcare. Noi metode de talamotomie, structuri țintă, controlului electrofiziologic intraoperator și selecției pacienților eligibili pentru chirurgie. Materiale și metode: În cadrul INN au fost efectuate peste 150 intervenții stereotactice. Printre care: talamotomii unilaterale, bilaterale etapizate. În dependență de forma BP a fost selectat cel mai adecvat nucleu bazal: VOA; VOP; VIM. Rezultate: În etapele inițiale ale chirurgiei stereotactice în BP eficiența intervențiilor era 60%. Dezvoltarea metodelor și dispozitivelor au permis studierea mecanismelor patofiziologice, în ansamblu la nivel de sistem și a permis înțelegerea interconexiunilor și rolului structurilor în apariția și menținerea simptomelor. Rezultatele operației au fost apreciate pe o scara de 5 puncte de la bine la agravarea simptomelor. Toți pacienții au fost evaluați peste 1 an postoperator. Peste 70% din rezultatele operațiilor au fost catalogate drept bune. Concluzii: Talamotomiile rămân a avea o eficiență înaltă ca opțiune de tratament al BP. Comparativ cu metodele neinvazive precum (Gama-knife si Ultrasunet) permit obținerea și controlul rezultatului introperator, exactitatea confirmata prin teleradiografie. Iar cu DBS-ul nu necesită implantarea electrozilor și mentenanța acestora. În același timp, fiind cost eficiente.Introduction: Parkinson’s disease (PD) remains a progressive disease, where both pharmacological and surgical treatment are not always successful. In Europe, the prevalence and incidence PD is estimated at 11-19 / 100,000 per year. 2/3 of patients suffering from PD > 10 years have an advanced degree of disability. Aim: The aim of the paper is to present our experience in stereotactic surgery in movement disorders, new thalamotomy methods, targets, intraoperative electrophysiological control, and selection of patients eligible for surgery. Materials and methods: Over 150 stereotactic interventions were performed at INN, among which: unilateral, staged bilateral thalamotomies. Depending on the form of PD, the most appropriate basal nucleus was selected: VOA; VOP; VIM. Results: In the initial stages of stereotactic surgery in PD, their efficiency reached 60%. The development of methods and devices has allowed the study of pathophysiological, as a system and has allowed the understanding of interconnections and the role of structures in the occurrence and maintenance of symptoms. The results of the operation were assessed on a 5-point scale from well to worsening of symptoms. All patients were evaluated >1 year postoperatively. Over 70% of the results of the operations were classified as good. Conclusions: Thalamotomies remain highly effective as a treatment option for PD. Compared to non-invasive methods such as (Gamma-knife and Ultrasound) allow obtaining and controlling the result intraoperatively, the accuracy confirmed by teleradiography. In addition, with DBS it does not require the implantation of electrodes and their maintenance. At the same time, are cost effective
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
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
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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