Every day thousands of individuals in the greater DC area use the WMATA Metro system to get from place to place. The Metro has collected a lot of information on riders including when and where they pass through turnstiles. In “the spirit of open data and collaboration,” the Metro has released data on stationto-station rider counts (1). The release was an open invitation for the public to analyz...

This study is to examine UX design patterns depending on touch gestures on smart-phones for mobile web service. As for user experiences regarding touch gestures on a smart-phone, directional motions such as horizontal or vertical movements were more frequent than zoon-in/out and rotation, and such motions were often combined for navigation and invitation functions. Dragging was directional both...

We exploit regional variation in the availability of breast cancer screening policies and variations in age eligibility criteria across European regions to estimate the causal eff ect of home invitation on mammography uptake. We link administrative public data about regional breast cancer screening policies from various sources to individual Survey of Health Ageing and Retirement in Europe (SHA...