Discourse and Digital Practices shows how tools from discourse analysis can be used to help us understand new communication practices associated with digital media, from video gaming and social ...networking to apps and photo sharing. This cutting-edge book: draws together fourteen eminent scholars in the field including James Paul Gee, David Barton, Ilana Snyder, Phil Benson, Victoria Carrington, Guy Merchant, Camilla Vasquez, Neil Selwyn and Rodney Jones answers the central question: "How does discourse analysis enable us to understand digital practices?" addresses a different type of digital media in each chapter demonstrates how digital practices and the associated new technologies challenge discourse analysts to adapt traditional analytic tools and formulate new theories and methodologies examines digital practices from a wide variety of approaches including textual analysis, conversation analysis, interactional sociolinguistics, multimodal discourse analysis, object ethnography, geosemiotics, and critical discourse analysis. Discourse and Digital Practices will be of interest to advanced students studying courses on digital literacies or language and digital practices.
Industrial applications of nanoparticles Stark, W. J; Stoessel, P. R; Wohlleben, W ...
Chemical Society reviews,
08/2015, Letnik:
44, Številka:
16
Journal Article
Recenzirano
Research efforts in the past two decades have resulted in thousands of potential application areas for nanoparticles - which materials have become industrially relevant? Where are sustainable ...applications of nanoparticles replacing traditional processing and materials? This tutorial review starts with a brief analysis on what makes nanoparticles attractive to chemical product design. The article highlights established industrial applications of nanoparticles and then moves to rapidly emerging applications in the chemical industry and discusses future research directions. Contributions from large companies, academia and high-tech start-ups are used to elucidate where academic nanoparticle research has revolutionized industry practice. A nanomaterial-focused analysis discusses new trends, such as particles with an identity, and the influence of modern instrument advances in the development of novel industrial products.
This tutorial review analyses where nanoparticle research has left the laboratory and today contributes to valuable products.
Understanding Digital Literacies Second Edition provides an accessible and timely introduction to new media literacies. This book equips students with the theoretical and analytical tools with which ...to explore the linguistic dimensions and social impact of a range of digital literacy practices. Each chapter in the volume covers a different topic, presenting an overview of the major concepts, issues, problems, and debates surrounding it, while also encouraging students to reflect on and critically evaluate their own language and communication practices.
Features of the second edition include:
Expanded coverage of a diverse range of digital media practices that now includes Instagram, Snapchat, TikTok, Tinder, and WhatsApp;
Two entirely new chapters on mobility and materiality, and surveillance and privacy;
Updated activities in each chapter which engage students in reflecting on and analysing their own media use;
E-resources featuring a glossary of key terms and supplementary material for each chapter, including additional activities and links to useful websites, articles, and videos.
This book is an essential textbook for undergraduate and postgraduate students studying courses in new media and digital literacies.
Digital media have the potential to foster genre innovation and change in scholarly communication, by 1) opening up new, diversified audiences to academics, and 2) facilitating the use of a range of ...multimodal semiotic resources, that combine word and image, in academic writing. However, relatively little applied linguistic research has investigated innovation in research genres, especially high stakes genres like the research article. In addition, some of the existing literature on the topic has concluded that the addition of digital elements to research articles (for example, embedded video) fails to add significant meaning to the genre, perhaps indicating a poor match between the affordances of digital media and the communicative purposes of the academic writers. This exploratory study provides a multi-dimensional genre analysis of a new research genre in the field of science: the video methods article (VMA), published online by the Journal of Visualized Experiments (JoVE). In order to understand the intertextual communicative context of this genre, community documents were reviewed and two specialist informants were interviewed. A sample of eleven VMAs from JoVE, one per year of publication from 2006- 2016, was examined. The multimodal analysis shows how the VMA genre draws on the affordances of digital video in order to meet genuine needs of academic writers. The findings also show some innovation and development in the genre over time, which moves through an initial period of experimentation before settling on a stable generic structure.
•The first integrated R744 system in a Scandinavian Hotel was evaluated.•Performance evaluation based on one year logged data.•The influence of the operating modes was determined.•DHW usage accounts ...for 52% of annual heat load.•Annual SCOP of 2.90 is obtained for the integrated R744 system.
This study investigates the performance of an integrated CO2 (R744) heat pump and chiller unit in a Norwegian hotel. The system consists of a single unit for heating, cooling and hot water with an integrated thermal storage. The thermal system of the hotel is described and data from the first year of operation are analyzed. Using the field measurements, hot water loads and COPs are calculated and averaged to 20-minute intervals. The heating and cooling capacities supplied by the R744 unit are studied on a weekly and monthly basis to evaluate the seasonal behavior of the system. The hot water storage holds an energy capacity of 350 kWh at fully charged conditions and demonstrates peak demand reductions of more than 100 kW during a 2-day period. The results show that the hot water usage accounts for 52% of the annual heat load of the hotel. Energy efficiency analysis of the integrated R744 system reveals an annual system SCOP of 2.90, and thus an untapped system potential that can be exploited by increasing the AC load delivered by the R744 unit. Other factors that greatly influence the efficiency of the system are variations in the ambient temperature and high gas cooler exit temperatures. The latter is often a result of high temperatures in the water returning from the subsystems of the hotel. This can be improved by reducing the number of starts and stops of the R744 unit and by insuring stratification in hot water tanks.
Objective: To describe seasonal variation in food intake, physical activity, and body weight in a predominantly overweight population. Design: A longitudinal observational study. Setting: Most of the ...study participants were recruited from a health maintenance organization (HMO) in central Massachusetts, USA. Additional individuals of Hispanic descent were recruited from outside of the HMO population to increase the ethnic diversity of this sample. Subjects: Data from 593 participants, aged 20-70, were used for this investigation. Each participant was followed quarterly (five sampling points: baseline and four consecutive quarters) for 1-year period. Body weight measurements and three 24-h dietary and physical activity recalls were obtained on randomly selected days (including 2 weekdays and 1 weekend day) per quarter. Sinusoidal regression models were used to estimate peak-to-trough amplitude and phase of the peaks. Results: Daily caloric intake was higher by 86 kcal/day during the fall compared to the spring. Percentage of calories from carbohydrate, fat and saturated fat showed slight seasonal variation, with a peak in the spring for carbohydrate and in the fall for total fat and saturated fat intake. The lowest physical activity level was observed in the winter and the highest in the spring. Body weight varied by about 1/2 kg throughout the year, with a peak in the winter (P<0.001 winter versus summer). Greater seasonal variation was observed in subjects who were male, middle aged, nonwhite, and less educated. Conclusions: Although there is seasonal variation in diet, physical activity and body weight, the magnitude of the change is generally small in this population. Sponsorship: US National Heart, Lung and Blood Institute.
This article considers how developments in information and communication technologies impact the field of TESOL, providing an examination of the implications of digital composition practices for ...pedagogies of writing. Adapted from the source document
Digital literacies and language learning Hafner, Christoph A; Chik, Alice; Jones, Rodney H
Language learning & technology,
10/2015, Letnik:
19, Številka:
3
Journal Article
Recenzirano
The term digital literacies refers to the practices of reading, writing and communication made possible by digital media. The articles in this special issue explore the impact of such digital ...practices on language learning, examining a) new needs of language learners in the digital age, and b) new globalized, online contexts for language learning. The topics covered include language learners' digital translanguaging in social networking sites, evidence of language learning in out-of-class YouTube comments, language socialization in Wikipedia writing projects, and the digital practices of language teachers both inside and outside of the classroom.
As a result of recent developments in digital technologies, new genres as well as new contexts for communication are emerging. In view of these developments, this article argues that the scope of ...English language teaching be expanded beyond the traditional focus on speech and writing to the production of multimodal ensembles, drawing on a range of other semiotic modes. The article describes an undergraduate course in English for science at a university in Hong Kong, which incorporated elements of digital literacies. Students were engaged in a project to conduct a simple scientific experiment, reporting their findings (1) as a multimodal scientific documentary, shared through YouTube with a general audience of nonspecialists, and (2) as a written lab report aimed at a specialist audience. This article focuses on the multimodal scientific documentaries created by students and evaluates their potential in terms of language learning by drawing on data from student interviews, student comments on a course blog, and the students' documentaries themselves. The analysis shows that students met the challenge of writing for an authentic audience by combining a range of modes (with language playing an important role) to develop an effective rhetorical "hook" and appropriate discoursal identity in their efforts to appeal to their audience.
Scientific popularization genres have attracted the attention of researchers in esp. Authors of such genres have been found to employ a variety of strategies to engage the readers. However, most ...studies of engagement in scientific popularization tend to focus on written genres. For this reason, they have mostly examined only the linguistic mode and rarely gone beyond this to take multimodal resources into consideration. the present study investigates how multimodal semiotic resources are combined in digital media to engage the online audience in an influential online scientific popularization genre, that is, TED talks. drawing on a corpus of 28 highly viewed TED talks from the area of biology, this study provides an in-depth analysis of multimodal engagement strategies in one of those talks. the analysis shows that the engagement of online viewers in a digitally mediated scientific popularization genre like TED talks tends to be achieved by the combination of multiple semiotic resources afforded by digital technologies, such as speech, gestures, gaze, visuals, distance of shot, perspective of shot and angle of shot. the study also reveals five strategic multimodal configurations employed to achieve viewer engagement, with the focus variously on engagement through visual aids, a long shot, gaze, questions and reference to personal emotions.
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