1,720,995 research outputs found
Intravenous drug dose optimization and drug effect monitoring in anaesthesia
Full text linkDit proefschrift onderstreept het belang van het optimaliseren van de dosering van anesthetica en geeft een beschrijving van de middelen die de anesthesiologen hebben om dit doel te bereiken. Twee belangrijke onderwerpen komen hierbij aan bod. Ten eerste hebben we onderzocht wat de invloed is van hersentumoren in de frontale hersenkwab op de pharmacokinetiek (de manier waarop het lichaam medicatie verwerkt) en pharmacodynamiek (de invloed van medicatie op het lichaam) van propofol bij patiënten die hieraan geopereerd werden. Op basis van ons onderzoek concluderen wij dat hersentumoren wel invloed hebben op de farmacokinetiek, maar niet op de farmacodynamiek van propofol. Ten tweede hebben we beoordeeld hoe effectief verschillende hypnose en analgesie monitors (BIS, CVI, CI, CS) zijn als hulpmiddel bij het optimaliseren van een anesthetische dosis in de algemene populatie. Uiteindelijk concluderen wij dat de huidige generatie hypnose en analgesie monitors anesthesiologen wel beter in staat stellen om de medicatie dosis te optimaliseren dan de huidige praktijk (standaard dosering schema’s en doseren op geleide van hemodynamische variabelen), maar dat ze nog steeds belangrijke tekortkomingen hebben
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
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
Optimising motor evoked potentials for spinal cord monitoring
Full text linkDuring complex surgery, during which the nervous system is at risk, intraoperative neurophysiological monitoring (IONM) is used to detect and prevent neurologic injury. Surgical procedures during which IONM is used range from intramedullary tumour resection to scoliosis correction and endovascular aneurysm repair to vestibular schwannoma resection. The goals of IONM can be divided into 'mapping' and 'monitoring' of the nervous system. During 'mapping' the goal is to localise anatomical structures during surgery. The goal of 'monitoring' is to (continuously) monitor neurological functions. For monitoring of the spinal cord, the motor tracts can be monitored using muscle motor evoked potentials (mTc-MEPs) and spinal motor evoked potentials (D-waves) elicited by transcranial electrical stimulation. For monitoring of the sensory tracts, somatosensory evoked potentials (SSEPs) can be used. It is recommended that both sensory tracts and motor tracts are monitored during surgical procedures where the spinal cord is at risk. IONM is increasingly used worldwide. The amount of clinical evidence demonstrating the added value of IONM is increasing. It is generally accepted that IONM can predict the post-operative neurological outcome, but whether the use of IONM can also help to prevent post-operative neurological damage has still to be proven. The primary aim of this thesis is to optimise motor evoked potentials for spinal cord monitoring by optimising elicitation and recording of mTc-MEPs (Part 1) and investigating the effects of physiological and pharmacological parameters on mTc-MEPs (Part 2). Furthermore, the clinical applications of spinal cord monitoring were explored (Part 3)
- …
