Service Assurance with Partial and Intermittent Resources : First International Workshop SAPIR 2004 Fortaleza Brazil August 1 6 2004. Proceedings This book constitutes the refereed proceedings of the First International Workshop on Service Assurance with Partial and Intermittent Resources SAPIR 2004 held in Fortaleza Brazil in August 2004. The 28 revised full papers presented were carefully reviewed and selected from numerous submissions. The papers are organized in topical sections on bandwidth allocation policy based operations service monitoring intelligent architectural systems mobility and wireless protocol mechanisms and performance across domains