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Archive for January, 2012

Tracking the Mood About Gas Prices on Twitter: A Case Study

by January 25, 2012

As another test of our strategy for teasing out public opinion from social media, we explored measuring mood about gas prices on Twitter. This post summarizes the findings from this case study. Incidentally, we are set up to measure mood from Twitter on an ongoing basis, although we would need to find a partner to help defray the ongoing costs of crowdsourcing the sentiment judgments. (See this post to read more about our decision to examine the discussion about gas prices on Twitter.)

The sentiment we mapped was culled from tweets gathered from four weeks’ worth of data starting on May 22nd, 2011. This time period was chosen to coincide with Memorial Day, a holiday during which many Americans travel by car. Our team was curious to see whether there would be an uptick in either the volume of tweets about gas prices during this period or a noticeable change in sentiment about these prices. (more…)

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Monitoring Will Be Key As Minnesota Takes A Leadership Role in Managing Nutrient Runoff

by January 18, 2012

5223892647_2a55e1b7c2 Yesterday I had the opportunity to hear EPA Administrator Lisa Jackson speak at the University of Minnesota, who was in town to launch a new program along with Minnesota’s Governor Mark Dayton and USDA secretary Tom Vilsack. The new initiative, Minnesota Agricultural Water Quality Certification Program, has a goal of reducing the introduction of nutrients and soils to waterways via runoff, a process known as “non-point source pollution” (a point source is a pipe, a sewage treatment plant, etc.).

I was drawn to the talk specifically to hear what Administrator Jackson would say about the new program, which I had read about in the morning’s Minneapolis StarTribune. She did not disappoint, although the bit about this new program occurred just as the questioning period came to a close. It was clear that she has a good deal of enthusiasm about this new program and its prospects for helping to reduce pollution, such as the introduction of nitrogen into the Mississippi that can lead to low-oxygen conditions in the Gulf of Mexico. (more…)

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