Join award-winning Great Falls Tribune reporters Erin Madison and Kristen Inbody as they visit each park and interview park managers, historians, and visitors to provide the most complete and up-to-date information about these remarkable public lands. Their unique book is packed with current information and special features, including:
Try playing with it. For instance, we see that this filter can have stability problems at low Q.
As we play, we think of questions In which regions is this filter stable? Where do we start losing the lowpass response? Intuition By the way, this frequency response is not simply plotted from the transfer function. Instead, the impulse response of the actual filter is simulated, and its FFT is shown.
To promote, protect, and preserve South Dakota agriculture for today and tomorrow. Our Work. The national parks are here for all of us, a truly American idea dependent on the support of people like you. The National Park Foundation works in the parks you love to protect them for the next generation. Learn more about our important work. Web sites, e-mails and phone numbers for SF State departments are listed below, in alphabetical order.
I think this is more honest, and would work even if we allowed the reader to change the filter topology. The z-plane pole positions are from the transfer function, however. We are shown six different ways of characterizing the filter: Each representation gives a unique insight.
By watching how they all respond to our experimentation, and how they dance with one another, we can develop a deep understanding -- of not just this filter topology, but digital filtering in general. Exploring the filter space becomes a game.
Incidentally, non-engineers may appreciate yet another representation. Flip the switch to the left, and try playing again. You may be surprised that this concern is relevant even in an engineering textbook. The formula for Fc is actually an approximation. By playing with the parameters, we can get a sense for where the approximation holds.
In fact, the entire premise of the filter, as stated in the sidebar that the parameters are separable might be considered marketing-speak. The primary point of this example -- the reason I call it an "explorable explanation" -- is the subtlety with which the explorable is integrated with the explanation.
Like the proposition example earlier, the filter description works as a static explanation -- it can be read like normal text. The reader is not forced to interact in order to learn. The reader interacts if he wants to go deeper, if he has piqued curiosity or unanswered questions.
There are no UI elements screaming for attention. The reader is not transported off to a separate "interactive" context.
Instead, the reader simply nudges the examples that the author has already presented.
Most interactive widgets dump the user in a sandbox and say "figure it out for yourself". Those are not explanations. To me, an essential aspect of the "explorable explanation" concept is that the author holds up his end of the conversation.
The author must guide the reader, and provide a structure for the learning experience. Only then can the reader respond, by asking and answering the questions that the author provokes. How do we make existing documents explorable? How can active readers ask questions and question assumptions while reading normal text?
For one simple example, consider the following passage that you might find on a typical advocacy site: Renewable Energy in California California leads the nation in installed wind generation capacity.Web sites, e-mails and phone numbers for SF State departments are listed below, in alphabetical order.
Connecting people who care with causes that matter. The North Houston Economic Development Center provides resources and support for economic development activities and serves as a regional economic hub.
CHAPTER SUMMARIES. Chapter 1. EarthEd: Rethinking Education on a Changing Planet. Erik Assadourian.
Erik Assadourian is a senior fellow at the Worldwatch Institute and director of State of the World and Worldwatch’s EarthEd Project. Baseball in Alabama. Alabama is the birthplace of some of baseball's most celebrated stars.
Long-time home run king Henry "Hank" Aaron, all-around powerhouse Willie Mays, and pitching great Leroy "Satchel" Paige all were born in the state. Montana State Parks: Complete Guide & Travel Companion by Erin Madison and Kristen Inbody. Montana’s 55 state parks are a spectacularly diverse collection of natural areas, historic sites, and fun places where visitors are welcome to hike, camp, fish, swim, .