Effect of Sr substitution on superconductivity in Hg2(Ba1-ySry)2YCu2O8-d (part2): bond valence sum approach of the hole distribution

The effects of Sr substitution on superconductivity, and more particulary the changes induced in the hole doping mechanism, were investigated in Hg2(Ba1-ySry)2YCu2O8-d by a "bond valence sum" analysis with Sr content from y = 0.0 to y = 1.0. A comparison with CuBa2YCu2O7-d and Cu2Ba2YCu2O8 systems suggests a possible explanation of the Tc enhancement from 0 K for y = 0.0 to 42 K for y = 1.0. The charge distribution among atoms of the unit cell was determined from the refined structure, for y = 0.0 to 1.0. It shows a charge transfer to the superconducting CuO2 plane via two doping channels pi(1) and pi(2), i.e. through O2(apical)-Cu and Ba/Sr-O1 bonds respectively.Comment: 13 pages, 5 figures, accepted for publication in Journal of Physics: Condensed Matte

Multisensory experiences in virtual environments: The role of sense of power, cognitive flexibility and personality traits

The technological advances such as Virtual Reality are creating opportunities for business. However, there is a lack of studies that consider tactile, smell and taste senses found in literature. Thus the aims of this study are: (i) explore how cognitive flexibility influences sense of power and consequently the intention to return in a context of a virtual reality coffee shop; (ii) analyze the moderating effect of the different sensory experiences in the relationship between sense of power and the intention to return (iii) analyze personality traits as moderator of cognitive flexibility and sense of power. Results show that cognitive flexibility positively explains sense of power and personality traits moderates the relationship between the two. However, results show that sense of power does not significantly explains return intentions. Furthermore, there is no impact of the insertion of the variable Sensory experience on the relation between sense of power and return intentions.info:eu-repo/semantics/publishedVersio

Virtual reality and gamification in marketing higher education: A review and research agenda

Purpose – The purpose of this paper is to review studies on the use of virtual reality (VR) and gamification to engage students in higher education for marketing issues to identify the research topics, the research gaps and to prepare a future research agenda. Design/methodology/approach – A literature review is performed based on two search terms applied to Web of Science, resulting in a final pool of 115 articles. A text-mining approach is used to conduct a full-text analysis of papers related to VR and gamification in higher education. The authors also compare the salient characteristics presented in the articles. Findings – From this analysis, five major research topics are found and analysed, namely, teaching methodologies and education, experience and motivation, student engagement, applied theories in VR and gamification. Based on this and following the theory concept characteristics methodology framework, the paper provides directions for future research. Originality/value – There is no comprehensive review exploring the topics, theories, constructs and methods used in prior studies concerning VR and gamification applied to higher education services based on all the articles published in well-regarded academic journals. This review seeks to provide deeper insights, to help scholars contribute to the development of this research field.info:eu-repo/semantics/publishedVersio

Creating memories and engagement in college student through virtual reality

This study intends to extend the understanding of drivers of student engagement in the educational context and analyse mindfulness as a moderator of the different associations in the proposed model. The proposed model regards VR experiences as stimuli, telepresence, pleasantness of the experience and memory as an organism and student engagement as the response. A sample of 136 participants allowed us to test the model. Findings revealed that all hypotheses were supported except H6 linking pleasantness of the experience with student engagement. Only the relationship between pleasantness and memory is higher for mindful students than nonmindful ones. These findings mean that students do not need to feel pleasure about what they are learning to be engaged.info:eu-repo/semantics/acceptedVersio

The impact of massclusivity campaigns on perceptions and brand love of Gucci online brand communities’ members

The current research aims to understand the impact of Massclusivity (massive and exclusive) campaigns on the brand love through online brand communities (OBC) interactions. Authors designed a netnography research with the purpose of analysing the interactions between a brand - the luxury fashion brand Gucci – and its online brand community on Facebook, during a specific period of time defined according to the launch of a Massclusivity campaigns of this brand. We collect a total of 10,689 interactions from March 2017 to March 2018. Findings highlight that the development of massclusivity campaigns have several impacts, such as generate awareness towards the brand, increases consumers’ engagement on SNP, and promotes communities’ expansion. These are directly connected to the interest that this type of marketing strategies generates towards the brands, which may be considered powerful to luxury brands who intend to diversify their audience and become more competitive

An empirical study on influencers and their engagement factors: The YouTubers' perspective

The current marketing arena is witnessing that the use of influencers or third-party content-generators is an efficient practice. Adding the fact that one of the arising-stars platforms in the social media spectrum is YouTube, the current research aims to understand how YouTube influencers can contribute to the process of customer engagement. The present research methodology is based on a qualitative approach through in-depth interviews of 22 female Youtubers devoted to the lifestyle categories. The questionnaire was built upon existing literature, aiming to understand what are the engagement factors that influencers should rely on to promote engagement from followers with the focal advertised object (i.e., product, brand). But this time from the Youtubers perspective. From the development of this study, a set of customer engagement factors arise. Based on the results we can claim that having an informal relationship with brands, presenting different content from others in the industry, or having a well-connected relationship with followers are engagement factors that contribute to customer engagement.info:eu-repo/semantics/publishedVersio

Exploring young artists’ digital performance: the impact of online community engagement and co-creation on brand love

New music artists have been emerging in recent years through new digital platforms and streaming services. These platforms allow artists to build a community and interact with members who share the same tastes and ideas. Hence, new artists find success through their communities’ support and engagement. The current paper explores the everexpanding connection between digital media and music – allowing fans and/or consumers to naturally build a sense of belonging to a community of a single artist and/or band (Brodie et al., 2013). Brand communities are also a place where artists and fans can develop a long-term relationship (Baldus et al., 2015) and in turn create valuable personalised experiences together (Prahalad and Ramaswamy, 2004) that will result in higher levels of engagement, or brand love (Carroll and Ahuvia, 2006; Vernuccio et al., 2015).info:eu-repo/semantics/publishedVersio

How influencers and digital interaction can impact customer-brand relationship and engagement

This research seeks to unveil how YouTube influencers and digital interaction can contribute to the process of customer-brand relationship and engagement. Based on in-depth interviews of female Youtubers devoted to the lifestyle categories, we aim to comprehend the engagement factors that influencers should rely on to promote engagement between their followers and the brands they advocate.info:eu-repo/semantics/publishedVersio

The use of biomarkers to evaluate the toxicity of metaldehyde and methiocarb baits to the terrestrial isopod porcellionides pruinosus Brandt, 1833

Biochemical indicators (biomarkers) are known to provide early warning signs of environmental pollution or stress conditions to the organisms, by measuring cellular or molecular responses of the target organism to xenobiotic agents. In this study, the terrestrial isopod Porcellionides pruinosus was exposed to these two molluscicides and three different enzymes, glutathione Stransferase (GST), acetylcholinesterase (AChE) and catalase (CAT) were analyzed to evaluate the effects of the application of the two molluscicides in single exposures and binary mixtures tests. Results indicate that the carbamate methiocarb inhibited significantly AChE activity, but no effects were observed in CAT and GST levels. The exposure to the metaldehyde had no effects on AChE, but a decrease in the higher exposure period was observed in GST levels as well as a general increase in CAT activity. The combined exposure of the two molluscicides resulted in a general decrease in AChE and CAT activity, but no visible effects were observed in terms of GST. The use of several biomarkers was a suitable tool to understand the mode of action of these two molluscicides in this isopod species