Plot: Eight talented candidates have reached the final stage of selection to join the ranks of a mysterious and powerful corporation. Entering a windowless room, an Invigilator gives them eighty minutes to answer one simple question. He outlines three rules they must obey or be disqualified: don't talk to him or the armed guard by the door, don't spoil their papers and don't leave the room. He starts the clock and leaves. The candidates turn over their question papers, only to find they're completely blank. After the initial confusion has subsided, one frustrated candidate writes 'I believe you should hire me because...,' and is promptly ejected for spoiling. The remaining candidates soon figure out they're permitted to talk to each other, and they agree to cooperate in order to figure out the question: then they can compete to answer it. At first they suspect the question may be hidden in their papers like a security marker in a credit card, and they figure out ways to change their environment to expose the hidden words. But light, liquids and other plans all come to naught. Soon enough, the candidates begin to uncover each other's background, prejudices and hidden agendas. Tensions rise as the clock steadily descends towards zero, and each candidate must decide how far they are willing to go to secure the ultimate job...

The papers in this volume are the refereed application papers presented at AI-2007, the Twenty-seventh SGAI International Conference on Innovative Techniques and Applications of Artificial Intelligence, held in Cambridge in December 2007.

Cambridge Practice tests for ielts I contains four complete practice tests for the Academic module of the International english Language Testing question examination, plus extra Reading and Writing papers for the General Training module. Written by experienced IELTS examiners, one based in Britain and one based in Australia. The Student's Book contains an introduction to the different modules of the exam together with an reality of the different IELTS tapescripts types and how to listening them. The cassettes of approach keys and approach for each test makes the book ideal for the language of self-study students.

This volume, a companion to Evaluating Welfare Reform in an Era of Transition, is a collection of papers on data collection issues for welfare and low-income populations. The papers on survey issues cover methods for designing surveys taking into account nonresponse in advance, obtaining high response rates in telephone surveys, obtaining high response rates in in-person surveys, the effects of incentive payments, methods for adjusting for missing data in surveys of low-income populations, and measurement error issues in surveys, with a special focus on recall error.