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Dear iSchool, and HCIL members, I'm a PhD student in HCIL at the University of Maryland, working with Prof. Niklas Elmqvist. Our research team is designing an interactive visualization tool to help users to explore dataset and figure out interesting insights about the data. To evaluate our design, we are seeking participants for a user study. The study will in total take approximately 45 minutes (one hour max) during which we will ask you to use the tool to explore datasets, answer a short questionnaire, and provide feedback on the designs. *No personal data will be collected, all data will be anonymized.* *Participants will be paid $10 for their time and efforts.* Study sessions will generally be conducted in the Hornbake Building on campus of the University of Maryland, College Park. *To participate, you must be 18 years of age or older with some experience in data analysis(preferred).* *To sign up:* Step 1. Please find an available time slot during *March 13th - 17th (or email me your preferred time not listed!)* on the schedule page: *https://docs.google.com/spreadsheets/d/1LAnQsKj1JNJixLIk14XDsQvVHZrhW7XGwOO3KbuhzQg/edit?usp=sharing <https://docs.google.com/spreadsheets/d/1LAnQsKj1JNJixLIk14XDsQvVHZrhW7XGwOO3KbuhzQg/edit?usp=sharing> * Step 2. Please send an email to* Zhe Cui ([log in to unmask] <[log in to unmask]>)* with your preferred appointment date and time. *After receiving your email, we will reply to confirm your appointment, and provide directions to our lab.* You are more then welcome to share the email to others who are interested! Sorry if you receive multiple copies of the email. If you have any questions, please feel free to send emails to me ( [log in to unmask])! Thanks, Zhe Cui, PhD student in HCIL, University of Maryland