This book describes the use of low-power low-cost and extremely small radios to provide essential time reference for wireless sensor networks. The authors explain how to integrate such radios in a standard CMOS process to reduce both cost and size, while focusing on the challenge of designing a fully integrated time reference for such radios. To enable the integration of the time reference, system techniques are proposed and analyzed, several kinds of integrated time references are reviewed, and mobility-based references are identified as viable candidates to provide the required accuracy at low-power consumption. Practical implementations of a mobility-based oscillator and a temperature sensor are also presented, which demonstrate the required accuracy over a wide temperature range, while drawing 51-uW from a 1.2-V supply in a 65-nm CMOS process.
Hip Hop Headphones is a course in Hip Hop Culture. Featuring definitions, lectures, academic essays, and other scholarly discussions and resources,Headphones documents the academic work of a self-professed scholar of the culture. In this project, Hip Hop is defined from multiple disciplinary perspectives, and then situated in a number of scholarly discourses, including pedagogy, literary studies, cultural studies and education. Headphones embraces the elemental forms of Hip Hop Culture--b-boying, dj-ing, rapping, and graffiti art--as a model for 21st-century academic scholarship and teaching. At the same time, it charts and collects the writings, research and insights of one of America's leading Hip Hop Scholars with the expressed purpose of serving as a blueprint for how academics and educators might use Hip Hop culture in the classroom.
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