We will use the list of Presidents of Peru from a Wikipedia page, to
play a bit with some cool R packages (XML, dplyr, lubridate, ggplot2,
and googleVis), which will be used to extract and clean up the data,
and later make some summaries and plots.
I've been playing with some new search engines, among then Wolfram's
Alpha which promises to understand
conceptually what we are seeking and show us relevant information (for
example, try searching for "carbon monoxide"). But
one in particular I find useful to summarize a collection of results:
Google Squared. It lets you create your own collection with data from
searches, and show the various aspects you might be insterested, and if
you have a Gmail/Google account, you can also save your "Squares" to
share with others.
At the University I work
as a professor and head of Software R&D at the University IT Office, we
are implementing videoconferencing environments for small to medium
sized groups (up to 18-20 people), using off-the-shelf cheap equipment.
Basically, a good webcam (2 Megapixels at least), a cheap desktop CPU
(USD 300-500), a good room microphone, and an LCD TV with VGA input, is
all we need to implement a room.