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geospatial matters

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Thursday
Jan312008

Keeping Up with Science

If you're an academic, or even a pseudo-academic like me, you need to stay current on the research in your field. You could just go to the library and grab journals off the shelf (boo), or perhaps steal your advisor's copy of Science every week and and peruse it over an Americano at your coffee shop of choice (yay), OR you could harness the awesome power of the Intertron. Well, you could, if there was some kind of killer app to help you out. As it is, there are only a few apps that range from impotent to mildly threatening, but some of them might be useful.

Feeds

Big feed iconA feed is a machine readable log of frequently updated content on the Internet (you might have heard of feed formats like Atom or RSS). Say you have a favorite website, like the Kelly Lab Blog. Instead of coming back here every day to see if things have changed, you could subscribe to the site feed (or the comment feed) with your favorite feed reader, and check that instead. That way you could check to see if lots of resources had been updated in one place. Many journals that have their digital act together publish feeds of their content (Nature, Science, TREE, PLoS), so you can always know when new content is available, and/or peruse titles and abstracts. Feeds are a good way to keep up to date, but they might not let you do much cataloguing or recommending. Google Reader (my feed reader of choice) let's you "share" items publicly (and with your GTalk contacts), but doesn't let you specify who you're sharing them with (my shared items are mostly just things I find both amusing and not incriminating, but you could use them for papers). You can also "star" things, which is like bookmarking, and there are tags, but stars lack specificity and I feel like their interface for tags could get unwieldy if you use a lot of them. Other feed readers might be different (Bloglines, Firefox, Thunderbird, NetNewsWire, heck even Outlook 2007).

del.icio.us

del.icio.us logoThe premier online bookmarking site isn't a bad tool for keeping track of articles. It won't tell you when resources are updated, but you could use it to save and organize articles you find interesting, by bookmarking and tagging them. Perhaps more importantly, you can recommend papers to other people using del.icio.us by using a tag like for:kueda, and likewise receive recommendations. Used in combo with a feed reader, it could be pretty useful. I actually use del.icio.us a lot for web resources in general. For instance, here's my limited collection of GIS data sources (tagged "gis" and "data"): http://del.icio.us/kueda/gis+data

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Connotea

Connotea logoNow we're entering the realm of specialized sites. Connotea is a sort of social bookmarking site specialized for journal articles, created by the Nature Publishing Group. It's got tagging, like del.icio.us, but it also lets you form explicit groups, and it will auto-extract citation information from the Web versions of articles (they even have a video). You could use Connotea to keep on top of what people are bookmarking by perusing tags (e.g. methane), or by subscribing to a tag's feed. I've found some interesting stuff browsing around the tags, but I haven't benefited from any of the social features like groups, because I don't know anyone else who uses Connotea. It also does some decent citation export in different formats, but it doesn't seem to export in different styles (Chicago vs. APA, for instance). citeUlike is another site very similar to Connotea, but I don't have as much experience with it. Also worth mentioning is Zotero. Zotero is an awesome plugin for Firefox that helps you manage citations. It's a local app without any social functionality (yet), so it's not really for keeping up to date, but it is great for extracting and exporting citations from papers and web pages. I've used it a bunch for writing papers. When it gets some network functionality it will be truly amazing. Ok, that's it for now. Anyone have any other favorite tools for keeping on top of academic literature?

Friday
Jan252008

New Mission; New Sensor

Just heard this story on "Talk of the Nation." NASA is embarking on a new mission, the Orbiting Carbon Observatory to monitor atmospheric carbon dioxide. A new sensor will be launched in 2008 and will have a few interesting features. First, this sensor contains three separate spectrometers, each capturing a different band. Second, the sensor will detect three distinct bands in the near infrared. Two of these bands are carbon dioxide bands, which measure the wavelength ranges that are absorbed by carbon dioxide, but little else on the earth's surface. As far as I know, this may be the first sensor designed to directly detect atmospheric gases.

Friday
Jan252008

Our Space category

I am adding a new category for postings that are relevant to the Our Space project. Right now, we are particularly interested in any topics regarding mapping behavior and accessibility. Walk Score utilizes Google Maps to calculate a neighborhood walkability index. Such an index could also be used as a measure of access.

Friday
Jan252008

Publish/Present GoogleDocs online

I found this presentation on the Google Maps API blog. Aside from the relevance of the content, I was really excited about this means to present powerpoints.

Thursday
Jan242008

Landsat 5 is back!

The USGS is pleased to announce that Landsat 5 resumed imaging on January 10, 2008. Landsat 5 imaging was suspended on October 6, 2007 due to a battery cell failure with one of its two working batteries. The Flight Operation Team determined that 1 of 22 cells failed in one of the batteries. This reduces the overall power available from the batteries and requires a new battery charging procedure to avoid overheating. In November 2005, Landsat 5 transitioned to operations using a fixed solar array due to a failed motor which reduces the efficiency of battery charging. This, combined with the reduced power available from the batteries, increases the complexity of maintaining a safe power balance while collecting imagery.Over the next few weeks, the team will continue to increase collection of imagery while closely monitoring power. Data collected will be available soon following analysis and calibration of the data.

Tuesday
Jan222008

Mikel Maron’s blog: building digital technology for our planet

Here find another related blog: Brainoff.com. Mikel is an advocate of open collection and distribution of geographic data, particularly with OpenStreetMap the "free and openly editable map of the entire world". Using Wiki concepts and GPS units, They are rapidly mapping using entirely voluntary contributions.  There are some great examples of participatory mapping on this site, among many other interesting ideas.
Tuesday
Jan222008

Really Check it: Watch This Video

This is very cool. See old-school geo-referencing/image matching tools bring "jaw-dropping" results in this TED video.
Friday
Jan182008

10 Challenges in Data Mining Research

From Qinghua: the 10 challenging problems in data mining research that resulted from an IEEE Conference. The 10 challenging problems are listed below (where the order of the listing does not reflect their level of importance):
  • Developing a Unifying Theory of Data Mining
  • Scaling Up for High Dimensional Data and High Speed Data Streams
  • Mining Sequence Data and Time Series Data
  • Mining Complex Knowledge from Complex Data
  • Data Mining in a Network Setting
  • Distributed Data Mining and Mining Multi-agent Data
  • Data Mining for Biological and Environmental Problems
  • Data-Mining-Process Related Problems
  • Security, Privacy and Data Integrity
  • Dealing with Non-static, Unbalanced and Cost-sensitive Data
Thursday
Jan172008

Check it: Mash-up of CA New Deal Projects (or what you didn’t know about the Rose Garden)

See this article on UCB front page about Gray Brechin's project to re-discover New Deal sites in CA. There are many around the Bay Area (including the Rose Garden), and the project (which is affiliated with Prof. Walker in Berkeley's Geography Dept) includes a mash-up map.
Thursday
Jan172008

Geography Tools

Free Geography Tools is a great blog for finding exactly that, free widgets to enhance your geographic and mapping-related work. A couple of recent posts highlighted these tools: This post highlights a tool to edit .dbf files. While this post introduces a desktop utility to convert DMS to Decimal-Degrees. Another cool utility that Maggie recently introduced me too is the GeoPDF toolbar, which allows users to explore map layers within Adobe Reader. The format is very similar to that of ArcMap, allowing for searches by attributes and for layers to be turned on and off. An additional tool, Map2PDF, allows users to export GeoPDF from ArcMap. If you want to download the GeoPDF toolbar, I have attached a map as an example.