RecoFit: Using a Wearable Sensor to Find, Recognize, and Count Repetitive Exercises Exercise repetition detection for resistance training based on smartphones A large scale study of daily information needs captured in situ KnowMe and ShareMe: Understanding Automatically Discovered Personality Traits from Social Media and User echoes from the past- how technology mediated reflection improves well-being A Contextual Inquiry of Expert Programmers in an Event-Based Programming Enviroment Interactive sketching for the early stages of user interface design The Design and Field Observation of a Haptic Notification System for Timing Awareness During Oral Presentation