Written in an accessible, conversational style, this comprehensive introduction to usability engineering takes a project-based approach to the development process. Provides detailed coverage of the fundamentals without unnecessary depth or breadth, focusing readers on understanding the goals and process of usability engineering. Covers the entire usability engineering lifecycle, emphasizing select techniques and methodologies. Illustrates the user interface development process with examples from a medium-scale development example. For anyone interested in learning more about usability and user interfaces in computer systems and software.

Have you ever seen a mathematical object that was so intriguing that anyone, regardless of mathematical background, could appreciate its aesthetic beauty? If so, did you stop to color it? Now is your chance. Explore the beauty of mathematics in this collection of intricate pictures related to complex-valued functions. Any of these images could pass for designs found in some of the many coloring books for adults seen in stores today and are displayed here for you to color. While looking at the coloring pages, you can read about the author's quest to find interesting images. Their tale includes expeditions on the complex plane, work with families of complex functions, visits to Julia sets, unexpected results from a typo, random explorations, and a final send-off from a well-known cartoon character. Grab your colored pencils and enjoy coloring these functions. There are no incorrect ways to color, and, consequently, there are no answers in the back of the book!