In a nearby forest, a young girl discovers a mysterious little creature and together, they seek to understand who or what the other is.

By the time students reach the end of a course on algorithm design, they are starting to ask questions about what computers can and cannot do: Is there a polynomial-time algorithm for every computational problem? Can every problem be solved using dynamic programming? Can every problem be formulated as a graph problem? What is a Computer and What Can It Do? takes advantage of the students' curiosity by answering their questions in the context in which they naturally arose: algorithms. What is a Computer and What Can It Do? is intended to serve as the primary textbook in an undergraduate course for computer science majors at the junior or senior level. Students should have previously taken a sophomore-level course in algorithms that includes a discussion of graph algorithms. This book may also be useful for people in fields other than computer science who have some background in algorithm design and who would like to develop an understanding of the main ideas of theoretical computer science without getting bogged down in minutiae. What is a Computer and What Can It Do? is short so that students can stay focused on understanding the problems that computers can and cannot solve rather than becoming overwhelmed by the details of automata theory and formal languages. This book is not a reference for professors. It is written for students to read ... and enjoy.

Every story I have written in this book is true. Every action by God I have recorded happened. And it is faith in the Father, His Son Jesus, and the Holy Spirit that moved the Lord. Jesus taught that faith the size of a mustard seed would bring miraculous answers to prayers. And the more one reads the Bible and hears the Word of God preached and taught, the stronger that faith becomes. The answers to prayers and the victories they brought that are recorded in this small book are a reminder to all that victories in the lives of countless numbers of people will continue as long as strong faith in our unchangeable God and His written word resides in the hearts of believers. "And this is the victory that overcometh the world, even our faith." 1 John 5:4(b)

A history of the internet, uncovering its origins in nature and centuries-old dreams of improving the quality of human life by creating thinking machines and allowing for communication across vast distances. Looks at what the internet is, where it came from, and where it might be taking us.

The underlying regularities and patterns of use within the seemingly chaotic World Wide Web are revealed.

One line straight down. One line to the right. One line to the left, then a circle. That was all—just three lines in a circle. This bold picture book tells the story of the peace symbol—designed in 1958 by a London activist protesting nuclear weapons—and how it inspired people all over the world. Depicting the symbol's travels from peace marches and liberation movements to the end of apartheid and the fall of the Berlin Wall, Three Lines in a Circle offers a message of inspiration to today's children and adults who are working to create social change. An author’s note provides historical background and a time line of late twentieth-century peace movements.