P. David Marshall

  • Photopigments are molecules that react to light and mediate a number of processes and behaviours in animals. Visual pigments housed within the photoreceptors of the eye, such as the rods and cones in vertebrates are the best known, however, visual pigments are increasingly being found in other tissues, including other retinal cells, the skin and the brain. Other closely related molecules from the G protein family, such as melanopsin mediate light driven processes including circadian rhythmicity and pupil constriction.  This Volume examines the enormous diversity of visual pigments and traces the evolution of these G protein coupled receptors in both invertebrates and vertebrates in the context of the visual and non-visual demands dictated by a species' ecological niche.

  • If the twentieth century has been
    dominated by discussions of the public, public life, and the public sphere, Contemporary Publics argues that, in the
    twenty-first century, we must complicate the singularity of that paradigm and
    start thinking of our world in terms of multiple, overlapping, and competing publics. In three distinct streams-art,
    media and technology, and the intimate life-this volume offers up the
    intellectual and political significance of thinking through the plurality of
    our publics. "Countering Neoliberal Publics: Screen and Space," explores how
    different artistic practices articulate the challenges and desires of multiple
    publics. "Making and Shaping Publics: Discourse and Technology" showcases how
    media shape publics, and how new and emerging publics use these technologies to
    construct identities. "Commodifying Public Intimacies" examines what happens to
    the notion of the private when intimacies structure publics, move into public
    spaces, and develop value that can be exchanged and circulated.

  • The definitive and first major text on personas in contemporary culture Modern social media and communication technologies have reshaped our identities and transformed contemporary culture, revealing an expanded and intensified reforming of our collective online behavior. Billions of people worldwide are increasingly engaged in the production, presentation, and modification of their public selves-curating personas through various social media and fundamentally altering how we interact in the twenty-first century. The study of persona is essential to understanding contemporary culture, yet literature in this emerging field is scarce. Filling a gap in current knowledge, Persona Studies: An Introduction is the first major work to examine the construction, delivery, and curation of public identities in contemporary online culture.  This timely book helps readers navigate the changing cultural landscape while laying the groundwork for further research and application of persona studies. Three case studies are included-examining personas of the artist, gamer, and professional­-to illustrate how personas continue to transform identity and reshape contemporary culture. From the historical precursors of the current iteration of persona to emerging configurations of public self, this unique work offers readers a broad introduction to the evolving theories and concepts of how persona defines the contemporary condition and its relation to technology and collective identity. To summarize, the book: Analyzes how identities linked to data are cultivated, curated and mined for various purposes Discusses the mediated blending of media and different types of interpersonal communication Explores tools for the investigation and analysis of persona, including Prosopographic field studies and information visualization Translates new research, concept, theories, methods, and approaches into clear case studies and applications Examines the personalization of public, private, and intimate information in the building of new personas Persona Studies: An Introduction is an innovative resource for students, academics, researchers, and professionals in fields covering digital and social media, technology and culture, mass media and communications, social and media psychology and sociology, and professional studies.

  • Companion to Celebrity presents a multi-disciplinary collection of original essays that explore myriad issues relating to the origins, evolution, and current trends in the field of celebrity studies.
    Offers a detailed, systematic, and clear presentation of all aspects of celebrity studies, with a structure that carefully build its enquiry Draws on the latest scholarly developments in celebrity analyses Presents new and provocative ways of exploring celebrity's meanings and textures Considers the revolutionary ways in which new social media have impacted on the production and consumption of celebrity 

empty