This book constitutes the proceedings of the 18th Collaboration Researchers' International Working Group Conference on Collaboration and Technology, held in Raesfeld, Germany, in September 2012. The 9 revised papers presented together with 12 short papers were carefully reviewed and selected from numerous submissions. They are grouped into five themes that represent collaborative learning, social media analytics, conceptual and design models, formal modeling and technical approaches and collaboration support in emergency scenarios.

In diesem Buch sind die Ergebnisse eines Seminars zum Thema "Programmierung von SAP-Systemen" festgehalten. Es stellt eine Einf hrung in die Programmierung mit der Programmiersprache ABAP dar.

Stalin's Loyal Executioner, drawn from still-classified Soviet archives, chronicles the meteoric and bloody career of Nikolai Ezhov, NKVD leader and security chief, revealing the tragic scope of communist terrorism under Joseph Stalin.