This book constitutes the refereed proceedings of the 20th Australian Joint Conference on Artificial Intelligence, AI 2007, held in Gold Coast, Australia, in December 2007.

The 58 revised full papers and 40 revised short papers presented together with the extended abstracts of 3 invited speeches were carefully reviewed and selected from 194 submissions. The papers are organized in topical sections on machine learning, neural networks, evolutionary computing, constraint satisfaction, satisfiability, automated reasoning, knowledge discovery, robotics, social intelligence, ontologies and semantic Web, natural language systems, knowledge representation, expert systems, applications of AI, and short papers.

John Thornton Caldwell's landmark Specworld demonstrates how twenty-first-century media industries monetize and industrialize creative labor at all levels of production. Through illuminating case studies and rich ethnography of colliding social-media and filmmaking practices, Caldwell takes readers into the world of production workshopping and trade mentoring to show media production as an untidy social construct rather than a unified, stable practice. This messy complex system, he argues, is full of discrete yet interconnected parts that include legacy production companies, marketers and influencers, aspirant online producers, data miners, financiers, talent agencies, and more. Caldwell peels away the layers of these embedded production systems to examine the folds, fault lines, and fractures that underlie a risky, high-pressure, and often exploitative industry. With insights on the ethical and human predicament faced by industry hopefuls and crossover creators seeking professional careers, Caldwell offers new interpretive frames and research methods that allow readers to better see the hidden and multifaceted financial logics and forms of labor embedded in contemporary media production industries.

In Production Culture, John Thornton Caldwell investigates the cultural practices and belief systems of Los Angeles–based film and video production workers: not only those in prestigious positions such as producers and directors but also many “below-the-line” laborers, including gaffers, editors, and camera operators. Caldwell analyzes the narratives and rituals through which workers make sense of their labor and critique the film and TV industry as well as the culture writ large. As a self-reflexive industry, Hollywood constantly exposes itself and its production processes to the public; workers’ ideas about the industry are embedded in their daily practices and the media they create. Caldwell suggests ways that scholars might learn from the industry’s habitual self-scrutiny.Drawing on interviews, observations of sets and workplaces, and analyses of TV shows, industry documents, economic data, and promotional materials, Caldwell shows how film and video workers function in a transformed, post-network industry. He chronicles how workers have responded to changes including media convergence, labor outsourcing, increasingly unstable labor and business relations, new production technologies, corporate conglomeration, and the proliferation of user-generated content. He explores new struggles over “authorship” within collective creative endeavors, the way that branding and syndication have become central business strategies for networks, and the “viral” use of industrial self-reflexivity to motivate consumers through DVD bonus tracks, behind-the-scenes documentaries, and “making-ofs.” A significant, on-the-ground analysis of an industry in flux, Production Culture offers new ways of thinking about media production as a cultural activity.

The future of humanity is urban. It might seem a bad move for a magazine named after a farm tool to bring out an issue on cities. Especially if that magazine is published by an Anabaptist community that originated in a back-to-the-land movement and still has the whiff of hayfield and woodlot to it. Why not stick to what you're good at? Why jump lanes? Because the future of humanity, pretty clearly, is urban. Urbanization is arguably the biggest change of habitat our species has ever undergone. For anyone who cares about the common good of humanity, then, cities need to matter. The modern city is an electrifying concentration of creativity, energy, and cultural dynamism. It's also still the "cauldron of unholy loves" that Saint Augustine discovered in Carthage one and a half millennia ago. It's the place where the cruelties of mammon, the hubris of power, and the perversions of lust manifest themselves most crassly. But cities have also given birth to culture and community and to remarkable movements of revival and renewal. In this issue, visit: - Belfast with Jenny McCartney - New York City with James Macklin - Medellin with Adriano Cirino - Pittsburgh with Brandon McGinley - Guatemala City with Jose Corpas - Philadelphia with Clare Coffey - Chicago with John Thornton Jr. - Paris with Jason Landsel You'll also find: - Insights on cities from Jane Jacobs, Eberhard Arnold, Augustine, and Philip Britts - reviews of books by Jonathan Foiles, Bethany McKinney Fox, J. Malcolm Garcia, Tatiana Schlossberg, Tim Gautreaux, Philip Bess, and Frederic Morton - art by Gail Brodholt, Michelangelo Buonarroti, Ben Ibebe, Brian Peterson, Chota, Raphael, Gertrude Hermes, Valentino Belloni, Tony Taj, and Aristarkh Lentulov Plough Quarterly features stories, ideas, and culture for people eager to put their faith into action. Each issue brings you in-depth articles, interviews, poetry, book reviews, and art to help you put Jesus' message into practice and find common cause with others.

John Thornton Caldwell's landmark Specworld demonstrates how twenty-first-century media industries monetize and industrialize creative labor at all levels of production. Through illuminating case studies and rich ethnography of colliding social-media and filmmaking practices, Caldwell takes readers into the world of production workshopping and trade mentoring to show media production as an untidy social construct rather than a unified, stable practice. This messy complex system, he argues, is full of discrete yet interconnected parts that include legacy production companies, marketers and influencers, aspirant online producers, data miners, financiers, talent agencies, and more. Caldwell peels away the layers of these embedded production systems to examine the folds, fault lines, and fractures that underlie a risky, high-pressure, and often exploitative industry. With insights on the ethical and human predicament faced by industry hopefuls and crossover creators seeking professional careers, Caldwell offers new interpretive frames and research methods that allow readers to better see the hidden and multifaceted financial logics and forms of labor embedded in contemporary media production industries.