The four‐day workweek and media use: A glimpse of the future

The Medium and Message of the Introductory Mass Communication Course

Introduction to Mass Communications, Jay Black and Frederick G Whitney (Dubuque, IA: William C. Brown, 1983), 473 pp., $18.50.

Mass Media in America, Don R. Pember (Chicago: Science Research Associates, 1983), 441 pp., $16.95.

Mediamerica, Edward Jay Whetmore (Belmont, CA: Wads‐worth, 1982), 365 pp., $15.95.

Free But Regulated: Conflicting Traditions in Media Law, Daniel L. Brenner and William L. Rivers (Ames, IA: Iowa State University Press, 1982), 283 pp., $24.95.

The First Amendment Reconsidered: New Perspectives on the Meaning of Freedom of Speech and Press, Bill F. Chamberlin and Charlene J. Brown (New York: Longman, Inc., 1982), 218 pp., $27.95.

Terrorism, the Media and the Law, Abraham H. Miller (Dobbs Ferry, NY: Transnational Publishers, Inc., 1982), 221 pp., $25.00.

Readings in Mass Communication: Concepts and Issues in the Mass Media, 5th ed., eds. Michael Emery and Ted Curtis Smythe (Dubuque, IA: Wm. C. Brown, 1983), 549 pp., $17.95.

Perspectives on Mass Communications, eds. Warren K. Agee, Phillip H. Ault and Edwin Emery (New York: Harper and Row, 1982), 476 pp., $13.50.

Mass Media III: An Introduction to Modern Communication, Ray Eldon Hiebert, Donald F. Ungurait and Thomas W. Bohn (New York: Longman, 1982), 643 pp., $17.95.     

Highly selective biomechanical separation of cancer cells from leukocytes using microfluidic ratchets and hydrodynamic concentrator

The separation of cells based on their biomechanical properties, such as size and deformability, is important in applications such as the identification of circulating tumor cells, where morphological differences can be used to distinguish target cancer cells from contaminant leukocytes. Existing filtration-based separation processes are limited in their selectivity and their ability to extract the separated cells because of clogging in the filter microstructures. We present a cell separation device consisting of a hydrodynamic concentrator and a microfluidic ratchet mechanism operating in tandem. The hydrodynamic concentrator removes the majority of the fluid and a fraction of leukocytes based on size, while the microfluidic ratchet mechanism separates cancer cells from leukocytes based on a combination of size and deformability. The irreversible ratcheting process enables highly selective separation and robust extraction of separated cells. Using cancer cells spiked into leukocyte suspensions, the complete system demonstrated a yield of 97%, while enriching the concentration of target cancer cells 3000 fold relative to the concentration of leukocytes.     

Beginning teachers becoming professionals through action research

This article describes the conduct of and acquired understandings from a study designed to promote the professional growth of a group of beginning primary school teachers through participatory action research. The beginning teachers collaborated with university academic staff during the design and conduct of the study. A key component of the study was the formation of action research cells of participating teachers with each group focusing on particular aspects of teaching, for example, assessment, catering for gifted and talented students, and inclusivity in the classroom teaching programme. The overall findings from the study, from the view of the university researchers, are presented and reflected upon in this article. The implications of using action research for the professional growth of beginning teachers are also discussed.     

Business Models in Digital Book Publishing: Some Insights from Australia

This interpretive study of change in Australian book publishing, included a survey of book publishers and the conduct of 14 case studies in five categories of publisher: general trade, academic, professional, specialist and university. This paper reports in detail on the experience on one general trade publisher as it sought to face the challenges of globalization and of organizational and technological change. The major finding was that digitization is indeed, impacting on business models for book publishing, with current models comprising something of a hybrid between the traditional and the innovative. Reflecting the presence in Australia of similar trends and issues that are affecting book publishing around the world, the findings are of relevance both to book publishers and to researchers. The work is original in that relatively little recent academic research has been conducted into book publishing in Australia, particularly as regards the implications of digitization for business models.     

Re‐imagining doctoral education: Professional Doctorates and beyond

Portents of the demise of the Professional Doctorate have emerged in some recent policy and institutional circles in Australia, raising questions about the meaning and relevance of the Professional Doctorate in an era of ‘league tables’ and research assessment in Australia. This article argues that such portents, based largely on narrow market‐driven arguments, are premature, reactive and unhelpful, in that they foreclose on a set of critical questions concerning the future purpose, scope and practice of doctoral education. The article argues that the simple re‐assertion of the PhD as the default award represents a restoration of the logics and imperatives of disciplinarity and of older notions of so‐called ‘real’ research. Further, questions of the changing economies of knowledge and practice within, between and beyond the reach of the university, are subordinated and disavowed. The article presents a re‐reading of the emergence of Professional Doctorates, from the perspective of a decade‐and‐a‐half of development and change. It suggests the need to revisit that history critically in the light of the current developments in doctoral education, in knowledge production and in developing different relations around knowledge between universities and different social and professional domains. Such revisitings can bring out emerging issues for doctoral education at a time when anxieties may inhibit taking up opportunities for innovation and linking with new kinds of knowledge production that go beyond Euro‐centric and university‐centric traditions.     

Users can change their web search tactics: Design guidelines for categorized overviews

Categorized overviews of web search results are a promising way to support user exploration, understanding, and discovery. These search interfaces combine a metadata-based overview with the list of search results to enable a rich form of interaction. A study of 24 sophisticated users carrying out complex tasks suggests how searchers may adapt their search tactics when using categorized overviews. This mixed methods study evaluated categorized overviews of web search results organized into thematic, geographic, and government categories. Participants conducted four exploratory searches during a 2-hour session to generate ideas for newspaper articles about specified topics such as “human smuggling.” Results showed that subjects explored deeper while feeling more organized, and that the categorized overview helped subjects better assess their results, although no significant differences were detected in the quality of the article ideas. A qualitative analysis of searcher comments identified seven tactics that participants reported adopting when using categorized overviews. This paper concludes by proposing a set of guidelines for the design of exploratory search interfaces. An understanding of the impact of categorized overviews on search tactics will be useful to web search researchers, search interface designers, information architects and web developers.