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Abstract
This article examines the language mixing practices of Puerto Rican adolescents in various social media platforms through a framework of code-mixing and socioindexicality. Over a twelve-week period, I collected samples of online text messages from six island bilinguals of an elite community of practice (CofP) and studied the way their unique socializations in private schools and bilingual universities contributed to the ways they made sense of languages, their social meaning potentials, and uses across online interactions. Against the meaningful backdrop of colonial-dynamics of Spanish and English in Puerto Rico, the paper examines how ideologies of "nationalism" and "race" get reproduced or challenged through bilingual practice, and English takes up an equally important role for the construction of social identities in the interactions of youth. Additionally, the study discusses bilingual styles that have been enregistered as social styles specific to technological mediums of communication and youth registers, Puerto Rican netspeak, as well as emerging social styles that indicate queer gender identity, or non-binary practices. In this sense, I offer a description of the island bilingual that is dynamic, strategic, and metapragmatically conscious of the purist ideologies of Spanish in Puerto Rico, as well as the indexical potentials of appropriating variable gender forms in Spanish, bilingual language practices, and netspeak registers towards the negotiation of identities in technological interaction. The way bilinguals relate to the languages at their disposal can provide a window to impending questions on the perceived coloniality of English, potential changes in language ideologies and uses, and whether and how language policies may shift to meet current demographic attitudes and language uses of contemporary Puerto Ricans.

Service quality and the effective measurement of service quality on the Internet have been drawing much attention lately with the increasing use of the World Wide Web. Researchers and managers focus on the construction of scales to measure electronic service quality, which assess customer satisfaction and loyalty as an ultimate goal. E-S-Qual is the most recently developed and popular e-service quality measurement technique on which there are quite a number of research studies. In this study, existing literature on service quality scales and the E-S-Qual scale is reviewed. A modified scale is also proposed suitable for the online banking sector

We propose a blind interference alignment scheme for partially connected cellular networks. The scheme cancels both intracell and intercell interference by relying on receivers with one reconfigurable antenna and by allowing users at the cell edge to be served by all the base stations in their proximity. An outer bound for the degrees of freedom is derived for general partially connected networks with single-antenna receivers when knowledge of the channel state information at the transmitter is not available. It is demonstrated that for symmetric scenarios, this outer bound is achieved by the proposed scheme. On the other hand, for asymmetric scenarios, the achievable degrees of freedom are not always equal to the outer bound. However, the penalty is typically small, and the proposed scheme outperforms other blind interference alignment schemes. Moreover, significant reduction of the supersymbol length is achieved compared with a standard blind interference alignment strategy designed for fully connected networks. ; This work has been partially funded by research projects COMONSENS (CSD2008-00010) and GRE3N (TEC2011-29006-C03-02). This research work was partly carried out at the ESAT Laboratory of KU Leuven in the frame of the Belgian Programme on Interuniversity Attractive Poles Programme initiated by the Belgian Science Policy Office: IUAP P7/23 'Belgian network on stochastic modeling analysis design and optimization of communication systems' (BESTCOM) 2012–2017. The work of D. Toumpakaris was supported by the European Union (European Social Fund—ESF) and Greek national funds through the Operational Program Education and Lifelong Learning of the National Strategic Reference Framework through the Research Funding Program Thales—Investing in knowledge society through the European Social Fund. The work of Syed Jafar was supported in part by NSFgrants CCF-1319104 and CCF-1317351. ; Publicado

Death and bereavement are human experiences that new media helps facilitate alongside creating new social grief practices that occur online. This study investigated how people's postings and tweets facilitated the communication of grief after pop music icon Michael Jackson died. Drawing on past grief research, religion, and new media studies, a thematic analysis of 1,046 messages was conducted on three mediated sites (Twitter, TMZ.com, and Facebook). Results suggested that social media served as grieving spaces for people to accept Jackson's death rather than denying it or expressing anger over his passing. The findings also illustrate how interactive exchanges online helped recycle news and "resurrected" the life of Jackson. Additionally, as fans of deceased celebrities create and disseminate web-based memorials, new social media practices such as "Michael Mondays" synchronize tweets within everyday life rhythms and foster practices to hasten the grieving process.

Taking a social network perspective, the authors investigate consumers' intentions to use innovative mobile services. With a sociometric survey, they empirically assess how consumers integrate and connect through mobile social networks, as well as how their network position influences knowledge creation and intentions to use four innovative mobile services: multimedia messaging, gaming, information, and transactions. Both personal (i.e., opinion leadership and experience with the communication mode) and similarity attributes of social network members have a significant impact on network position, that is, their level of individual connectedness and integration. In addition, the impact of this network position on knowledge creation is contingent upon the type of innovative service. In three out of four mobile service categories, integration exhibits a negative effect on knowledge creation, whereas connectedness has a positive effect. Knowledge creation significantly influences intentions to use mobile services. Moreover, the authors demonstrate that carryover effects occur across the four service categories. Finally, the network's perceived ability to adopt innovative mobile services has a different impact on usage intentions across the four service categories.

AbstractMeasures of bipartite network structure have recently gained attention from network scholars. However, there is currently no measure for identifying key players in two-mode networks. This article proposes measures for identifying key players in bipartite networks. It focuses on two measures: fragmentation and cohesion centrality. It extends the centrality measures to bipartite networks by considering (1) cohesion and fragmentation centrality within a one-mode projection, (2) cross-modal cohesion and fragmentation centrality, where a node in one mode is influential in the one-mode projection of the other mode, and (3) cohesion and fragmentation centrality across the entire bipartite structure. Empirical examples are provided for the Southern Women's data and on the Ndrangheta mafia data.