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We present two methods that combine image reconstruction and edge detection in computed tomography (CT) scans. Our first method is as an extension of the prominent filtered backprojection algorithm. In our second method we employ ℓ1-regularization for stable calculation of the gradient. As opposed to the first method, we show that this approach is able to compensate for undersampled CT data.
Background:
Brain lesions in language-related cortical areas remain a challenge in the clinical routine. In recent years the resting-state fMRI (rs-fMRI) was shown to be a feasible method for preoperative language assessment. The aim of this study was to examine whether language-related resting-state components, which have been obtained using a data-driven independent-component-based identification algorithm, can be supportive in determining language dominance in the left or right hemisphere.
Methods:
Twenty patients suffering from brain lesions close to supposed language relevant cortical areas were included. Rs-fMRI and task-based (tb-fMRI) were performed for the purpose of preoperative language assessment. Tb-fMRI included a verb generation task with an appropriate control condition (a syllable switching task) to decompose language critical and language supportive processes. Subsequently, the best fitting ICA component for the resting-state language network (RSLN) referential to general linear models (GLMs) of the tb-fMRI (including models with and without linguistic control conditions) was identified using an algorithm based on the Dice-index.
Results:
The RSLNs associated with GLMs using a linguistic control condition led to significantly higher laterality indices than GLM baseline contrasts. LIs derived from GLM contrasts with and without control conditions alone did not differ significantly.
Conclusion:
In general, the results suggest that determining language dominance in the human brain is feasible both with tb-fMRI and rs-fMRI, and in particular, the combination of both approaches yields a higher specificity in preoperative language assessment. Moreover, we can conclude that the choice of the language mapping paradigm is crucial for the mentioned benefits.
In this work, a simple cost effective method to create tunable self-assembled three-dimensional nanostructure array-like nanoantennas on a tip of an optical quartz glass fiber is described. The structures are prepared using lithography-less dry etching. Gold nanoparticles are used as an etching mask using a thin metal-film thermal dewetting technique. The structures are applied as sensor for label-free analysis of organic substances in ppb range, such as drug residues in groundwater. The measurements are carried out by means of a Surface-enhanced Raman scattering (SERS) effect, an exchangeable sensor head, and a portable Raman device. This method allows in situ applications. Parathiocresol is used as a model substance to characterize the SERS cells. For metallization, gold and silver are compared. Reproducible SERS enhancement factors up to 10 7 are evaluated.
Introduction: Consultant Effectiveness is one of the main pillars of successfully implementing Psychological Skills Training (PST) in both elite mainstream and disability sports (Martin, 2015;
Vealey, 2007). Yet, there is a dearth of research on the articularities of PST consultation in elite Deaf Sport (Schliermann, 2015). Since hearing impairments have multiple intrapsychic as
well as interpsychic implications (Leigh & Andrews, 2016), it might influence Consultant Effectiveness in Deaf Sport. Therefore, the main purpose of this exploratory study was to investigate
preconceptions and actual experience of sport psychologists in regard to the consultation of elite deaf and hard-of-hearing (HOH) athletes. Method: A self-constructed questionnaire was administrated to 93 accredited sport psychology consultants (Mconsultant-years = 10.78) in
German-speaking countries. They were asked about their awareness, opinions and experience with deaf and HOH athletes. Results: Seven consultants (8%) reported ever to have worked with a deaf or HOH athlete. Four had ever watched a competition of the Deaflympics
in comparison to 77 who had watched one of the Paralympic games. Yet most subjects (71%) declared their willingness to work with deaf or HOH athletes regardless of their years of experience as consultants or prior contact with deaf or HOH individuals. In addition, the vast majority of the sample evaluated the implementation of common PST techniques in Deaf Sport as potentially “very effective” or “extremely effective”. When asked about potential particularities in the work with this group of athletes, most consultants focused mainly on communication issues. Conclusion: The analyses revealed a lack of awareness of elite Deaf Sport within the professional sport psychology communities in Germany, Austria and Switzerland. Furthermore, a low rate of professional PST implementation in elite Deaf Sport was found in these countries. Considering the lack of experience and knowledge about the particularities in Deaf Sport, further research is needed to provide hearing consultants with tools to understand the world of elite deaf and HOH athletes beyond the means of communication with them.
Projekt MAGGIE
(2021)
Im Projekt MAGGIE werden innovative Methoden der energetischen Gebäudesanierung im genossenschaftlichen Wohnquartier Margaretenau Regensburg getestet. Im Beitrag zur Sozialstudie wird die Erhebung der Akzeptanz einer energetischen Sanierung vorgestellt. Vor der Sanierung wurde eine schriftliche Haushaltsbefragung durchgeführt. Der Vortrag geht auf theoretische Aspekte der Nachhaltigkeit und Ergebnisse ein. Ein Fokus liegt dabei auf der sozialen Nachhaltigkeit im Sinne der Sozialverträglichkeit.
Sind Impfbereitschaft und Impfablehnung rational erklärbar?
Und wenn ja: Welche Rolle spielen dabei Verschwörungsüberzeugungen
und die Nutzung sozialer Medien?
Welchen Einfluss haben Freunde und Bekannte und das
Wohl der Gesellschaft? Und inwieweit vertraut die Bevölkerung
in Deutschland überhaupt in Impfungen und staatliche
Institutionen wie das Robert Koch-Institut?