153 research outputs found
Nonlinear Variational Inequalities Depending on a Parameter
This paper develops the results announced in the Note [14]. Using an
eigenvalue problem governed by a variational inequality, we try to unify the theory
concerning the post-critical equilibrium state of a thin elastic plate subjected to
unilateral conditions
Разработка системы удержания персонала предприятия по производству электрооборудования
Объектом исследования являются причины текучести персонала на предприятии и методы их устранения.
Цель работы – разработка системы удержания сотрудников на предприятии.
В процессе исследования проводился анализ системы удержания персонала на предприятии АО «Узэлектроаппарат».Object of research are the reasons for staff turnover at the company and ways to address them .
Purpose - to develop a system of retention of employees in the enterprise.
The study analyzed personnel retention system at the enterprise JSC " Uzelektroapparat
Bolus residue scale: an easy-to-use and reliable videofluoroscopic analysis tool to score bolus residue in patients with dysphagia
Background. We aimed to validate an easy-to-use videofluoroscopic analysis tool, the bolus residue scale (BRS), for detection and classification of pharyngeal retention in the valleculae, piriform sinuses, and/or the posterior pharyngeal wall. Methods. 50 randomly selected videofluoroscopic images of 10 mL swallows (recorded in 18 dysphagia patients and 8 controls) were analyzed by 4 experts and 6 nonexpert observers. A score from 1 to 6 was assigned according to the number of structures affected by residue. Inter- and intrarater reliabilities were assessed by calculation of intraclass correlation coefficients (ICCs) for expert and nonexpert observers. Sensitivity, specificity, and interrater agreement were analyzed for different BRS levels. Results. Intrarater reproducibility was almost perfect for experts (mean ICC 0.972) and ranged from substantial to almost perfect for nonexperts (mean ICC 0.835). Interjudge agreement of the experts ranged from substantial to almost perfect (mean ICC 0.780), but interrater reliability of nonexperts ranged from substantial to good (mean 0.719). BRS shows for experts a high specificity and sensitivity and for nonexperts a low sensitivity and high specificity. Conclusions. The BRS is a simple, easy-to-carry-out, and accessible rating scale to locate pharyngeal retention on videofluoroscopic images with a good specificity and reproducibility for observers of different expertise levels.Nathalie Rommel, Charlotte Borgers, Dirk Van Beckevoort, Ann Goeleven, Eddy Dejaeger, and Taher I. Omar
Automatische Impedantie Manometrie (AIM): objectieve diagnostiek van oro-faryngale dysfagie
Dit overzichtsartikel wil het klinisch potentieel aantonen van Automatische Impedantie Manometrie (AIM) als nieuwe, nietradiologische
techniek voor screening en diagnostiek van faryngale dysfagie, zijnde slikstoornissen in de mond, keelholte en
bovenste slokdarm. Deze AIM-techniek maakt gebruik van een katheter met druksensoren en impedantie-elektroden om
slikken kwantitatief te beschrijven. Een geïntegreerde – eerder dan afzonderlijke – analyse van de gemeten druk- en
impedantiepatronen die ontstaan bij het doorslikken van een voedselbolus, kan een zinvolle aanvulling zijn op de dynamische
beeldvormingsonderzoeken die vandaag de dag als gouden standaard worden gezien. Belangrijke voordelen zijn het
objectieve karakter van de techniek en de geautomatiseerde berekening van diverse slikparameters. Een globale maat voor
de slikfunctie kan worden bekomen (Slik Risico Index, SRI) en houdt verband met (de ernst van) het aspiratierisico van de
patiënt en de aanwezigheid van bolusresidu. Zo kan een accurate detectie van aspiratie met een sensitiviteit van 0,88 en
specificiteit van 0,96 niet via radiologisch onderzoek bereikt worden. Verschillende slikparameters zijn ook voldoende gevoelig
om veranderingen in voedselconsistentie te detecteren en om de effecten van slikmanoeuvres objectief te beschrijven.
Recent werd ook aangetoond dat deze AIM-analyse snel en betrouwbaar kan worden uitgevoerd door clinici met variërende
ervaring en opleiding. Bovendien worden in verschillende patiëntengroepen andere patronen van afwijkende slikparameters
aangetroffen. Of deze observatie aanleiding kan geven tot specifieke slikdiagnoses en dus meer gerichte behandelingen is
momenteel onderwerp van onderzoek
Study protocol for a randomized controlled trial: Prophylactic swallowing exercises in head-and-neck cancer patients treated with (chemo)radiotherapy (PRESTO trial)
FACES—A database of facial expressions in young, middle-aged, and older women and men: Development and validation
Human and machine validation of 14 databases of dynamic facial expressions
With a shift in interest toward dynamic expressions, numerous corpora of dynamic facial stimuli have been developed over the past two decades. The present research aimed to test existing sets of dynamic facial expressions (published between 2000 and 2015) in a cross-corpus validation effort. For this, 14 dynamic databases were selected that featured facial expressions of the basic six emotions (anger, disgust, fear, happiness, sadness, surprise) in posed or spontaneous form. In Study 1, a subset of stimuli from each database (N = 162) were presented to human observers and machine analysis, yielding considerable variance in emotion recognition performance across the databases. Classification accuracy further varied with perceived intensity and naturalness of the displays, with posed expressions being judged more accurately and as intense, but less natural compared to spontaneous ones. Study 2 aimed for a full validation of the 14 databases by subjecting the entire stimulus set (N = 3812) to machine analysis. A FACS-based Action Unit (AU) analysis revealed that facial AU configurations were more prototypical in posed than spontaneous expressions. The prototypicality of an expression in turn predicted emotion classification accuracy, with higher performance observed for more prototypical facial behavior. Furthermore, technical features of each database (i.e., duration, face box size, head rotation, and motion) had a significant impact on recognition accuracy. Together, the findings suggest that existing databases vary in their ability to signal specific emotions, thereby facing a trade-off between realism and ecological validity on the one end, and expression uniformity and comparability on the other
DAVID: An open-source platform for real-time transformation of infra-segmental emotional cues in running speech
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