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In this study, the synthesis of new 5 (2-x-phenyl)-N,N-dimethyl-2H-tetrazole-2-carboxamides (X = H and Cl) is reported coupled with the investigation of their dynamic H-1-NMR via rotation about C-N bonds in the moiety of urea group [a; CO-NMe2] in DMSO solvent (298-373 K). Accordingly, activation free energies of 17.32 and 17.50 kcal mol(-1) were obtained for X = H and Cl respectively, with respect to the conformational isomerization about the Me2N-C=O bond (a rotation). Moreover, a and b [b; 2-tetrazolyl-CO rotations] barrier to rotations in 5-(2-x-phenyl)-N,N-dimethyl-2H-tetrazole-2-carboxamides were also calculated by B3LYP/6-311++G** procedure. The optimized geometry parameters are well consistent with the X-ray data. Computed rotational energy barriers (X = Cl) for a and b were estimated to be 17.52 and 2.53 kcal mol(-1), respectively, the former in agreement with the dynamic NMR results. X-ray structures verify that just 2-acylated tetrazoles are formed in the case of 5-(2-x-phenyl)-N,N-dimethyl-2H-tetrazole-2-carboxamides. A planar trigonal orientation of the Me2N group was proven by X-ray data, which is coplanar to the carbonyl group, coupled with partial double bond C-N character. This also illustrates the syn-periplanar position of the tetrazolyl ring with C=O group. In solution, the planes containing tetrazolyl ring and the carbonyl bond are almost perpendicular to each other (because of steric effects as confirmed by calculations) while the planes containing carbonyl bond and Me2N group are coplanar. This phenomenon is in contrast with similar urea derivatives and explains the reason for the unusually high rotational energy barrier of these compounds. (C) 2020 Elsevier B.V. All rights reserved.
This chapter compares East and West African English as two distinct regional varieties of African English. First, the historical development of English in these two regions is briefly considered. It is argued that British colonial policy contributed significantly to the sociolinguistic and, indirectly, even structural differences these varieties exhibit. Then, the discussion moves on to give a short overview of the national sub-varieties. It is found that, although united by common linguistic features, West African English is far more heterogeneous than East African English, and some explanation is provided for this phenomenon. Focusing specifically on phonetic features, the chapter summarizes and contrasts the main diagnostic and distinctive features of each regional variety, with special reference to the peculiarities of the national varieties of West African English. However, despite their structural differences, West African, East African English and, for that matter, Southern African English are rooted in a shared “African culture.” Recent findings are introduced, in which common conceptual and linguistic patterns pertaining to witchcraft, expressed in the regional varieties in question, are highlighted.
The increasing prevalence and ubiquity of digital technologies is changing the needs and expectations of patients towards healthcare services. As a result, a plethora of patient-centered services edges into the healthcare market. Since digital technologies bear the potential to surmount barriers in time and space, patients increasingly demand real-time or near-time healthcare services. Amongst a cloud of related concepts in the context of digital health, one term increasingly typifies this impulse: on-demand healthcare. While this term can be noticeably found in practice, there is hardly some theoretical foundation so far. Against this background, the aim of this paper is to address this research gap and to explore the phenomenon of on-demand healthcare. Based on a design-science approach including a literature review and analysis of in-depth interviews and empirical cases, the outcome of this paper is twofold: (1) a conceptual framework and (2) a proposal for a definition of on-demand healthcare.
Due to changing customer behavior in digitalization, banks urge to change their traditional value creation in order to improve interaction with customers. New digital technologies such as core banking solutions change organizational structures to provide organizational and individual affordances in IT-supported personal advisory. Based on adaptive structuration theory and with qualitative data from 24 German banks, we identify first, second and third order issues of organizational change in value creation, which are connected with a set of affordances and constraints as the outcomes for customer interaction.
Aktenvortrag – Zivilrecht
(2020)
In materieller Hinsicht ist in diesem Aktenvortrag der praxisgerechte Umgang mit dem Deliktsrecht und dem zivilrechtlichen Nachbarrecht zu bewerkstelligen. Prozessual bietet der Sachverhalt Möglichkeit zur Bearbeitung examensklassischer Problemkreise. Es handelt sich um eine sehr umfangreiche Aufgabe. Um die vorgegebene Bearbeitungszeit einzuhalten, kann der Vortrag kaum in allen Punkten so ausführlich gehalten werden wie die hier vorgeschlagene Lösung. Das wird aber für eine gute Bewertung auch nicht erforderlich sein. Vielmehr kommt es, wie stets, auf eine überzeugende Schwerpunktsetzung an.
Gegenstand des Beitrags ist schwerpunktmäßig das im Jahr 2016 mit den §§ 155b , 155c FamFG geschaffene Rechtsbehelfssystem der Beschleunigungsrüge und Beschleunigungsbeschwerde. Bevor Grund und Grenze der Verfahrensbeschleunigung in Kindschaftssachen unter besonderer Berücksichtigung des Gedankens der Verfahrensökonomie ausgelotet werden, geht der Verfasser auf das Verhältnis zwischen Beschleunigungsgrundsatz und Prozessökonomie in gebotener Kürze ein. Anschließend liegt der Fokus auf dem Beschleunigungsgrundsatz; zunächst in familiengerichtlichen Verfahren im Allgemeinen und sodann im kindschaftsrechtlichen Verfahren im Speziellen. In Bezug auf Letzteres wird ferner aufzuzeigen sein, dass Verfahrensökonomie die kindeswohldienliche Anwendung des Beschleunigungsgrundsatzes bedeutet. Dieser Anwendungsbefehl soll abschließend am Beispiel des einleitend angesprochenen, relativ neuen Rechtsbehelfsverfahrens exemplifiziert werden, um der Frage nachzugehen, ob das Kindschaftsverfahrensrecht mehr Effektivität verträgt.
Editorial
(2020)
Increasingly, research attention is being afforded to various forms of problematic media use. Despite ongoing conceptual, theoretical, and empirical debates, a large number of retrospective self-report scales have been produced to ostensibly measure various classes of such behaviour. These scales are typically based on a variety of theoretical and diagnostic frameworks. Given current conceptual ambiguities, building on previous studies, we evaluated the dimensional structure of 50 scales targeting the assessment of supposedly problematic behaviours in relation to four technologies: Internet, smartphones, video games, and social network sites. We find that two dimensions (‘compulsive use’ and ‘negative outcomes’) account for over 50% of all scale-items analysed. With a median of five dimensions, on average, scales have considered fewer dimensions than various proposed diagnostic criteria and models. No relationships were found between the number of items in a scale and the number of dimensions, or the technology category and the dimensional structure. The findings indicate, firstly, that a majority of scales place an inordinate emphasis on some dimensions over others and, secondly, that despite differences in the items presented, at a dimensional level, there exists a high degree of similarity between scales. These findings highlight shortcomings in existing scales and underscore the need to develop more sophisticated conceptions and empirical tools to understand possible problematic interactions with various digital technologies.