Teen Tech Tip of the Week #23: Geographic Information Systems 
Welcome back! This week we have an exciting topic at hand, mostly because of how powerful the tools are. In this post you will learn how to make interactive maps to study and compare geographic information.

Take some time to let this map load, and be sure to check out all its features. This week's topic is a rather difficult one, so take some time and explore all that it has to offer.


View Larger Map
(Map relating the proximity of farmers markets to the types of crops harvested in each region. NOTE: Click Legend in the top right corner and give the map a moment to load)

What is GIS?!


Geographic Information Systems, or GIS, are systems that store, analyze, and graphically present geographic data, called spatial data. Map presentations (like the one featured above) are created by adding layers of data onto a base map.

In the example above, I started with a map of the US, and then I added a shapefile containing a map of all the counties of KY. Next, I added a layer containing all of the farmers markets in the US and a final layer that shows the diversity of crops harvested per county in the US. This simple map shows the relationship between the density of farmers markets and the agricultural productivity of KY counties.

Maps like this one can be analyzed to better understand that relationship, and information like this may be important to farmers looking to corner new markets. In fact, GIS is a very large field that encompasses many disciplines of study like science, the environment, infrastructure, business, social studies, history, geography, and geology. Many jobs are available to people with strong GIS skills, as well.

Below are some resources to get you started in this exciting field.

Free Map Making Software


Here are some free applications that allow you to access data and make maps:

ArcGIS Online
ArcGIS Explorer Desktop
ArcGIS Explorer Online

Data Sources


Your map is only as good as the data that you have to display. Whether or not you realize it, KY is in the top 5 states in the nation for GIS data! Here are bunch of great place for fast, free data:

KY Geological Survey - offered through the University of KY, the KGS is the repository for a wide range of KY Geospatial data

Geospatial Data Library - this is the KGS library of data including links to the KY Geonet, Office of Geographic Information Systems, KY Dept Fish and Wildlife, University of Louisville GIS, the US Geological Survey, and more.

Tutorials


You've got all the tools you need, now what?! Watch some of these videos to get you started:

Getting Started with ArcGIS Online
ArcGIS Explorer Quick Start Tutorial

If you are looking to take these skills to the higher level, be sure to check ot some of the GIS courses offered through My Library University.

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Teen Tech Tip of the Week #22: Crowdsourcing 
Interested in auditioning for the role of a guinea pig?? What if it were for a good cause, like science?



Amateur researchers and science enthusiasts have aided in scientific research projects for quite a long time. For example, members of the John James Audubon society have participated in bird counts to aid in conservation efforts for over a century.

This method called 'citizen science,' or 'crowdsourcing,' is the systematic collection and analysis of data. It can work in several different ways, like citizens collecting data for researchers to analyze or citizens analyzing the data that researchers have collected.

Below are some web applications that let you be the guinea pig and help science--consider it micro-volunteering!

EteRNA
Solve puzzles by shaping RNA nucleotides and help scientists unlock the secrets of genetics.

Polymath Blog
This one is for all you math-letes out there. This project posts mathematical equations and relies on the crowd to solve them.

Encyclopedia of Life
We looked at EOL in Tip #15. Now you can help by contributing or checking the accuracy of species photos.

Foldit
This science-project-turned-gamed aims to study the nature of protein structures with the hope of classifying new virus-fighting or CO2-cleaning proteins.

Zooniverse
Here you will find more than a dozen research projects broken into the following categories: space, climate, humanities, nature, and biology.

As a sneak peak, Facebook will soon release an app that let's members 'like' a certain whale shark and track conservation efforts.

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Teen Tech Tip of the Week #21: Making Your Own Video Games 
Welcome back to the blog. We took a week or so off to wrap everything up with the Louisville Young Filmmakers Festival, and we had a blast! This week we are looking at some cool sites that allow you to make you own video games.



Game Makers


Here are some websites that allow you to make and share games with friends:

Scratch
Sploder
Alice

Resources to Get You Started


Some of the sites above require you to know a little computer coding, so here are some resources to get you started in the right direction:

Game Maker Academy
Learn Scratch

For more on coding, be sure to check the library's event calendar online.

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Louisville Young Filmmakers Festival 


One last Quick Note:


There has been a time and date change for the event so that we can include as many people in the festivities as possible.

The festival premier will now be held Saturday, March 16 at 2pm.

We hope to see you all there!


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Teen Tech Tip of the Week #20: Green Screen Fun 
Welcome back to the blog after a bit of a break. Today we will discuss how to use a green screen and make some movie magic.


(Patrick Fitzgerald, Beargrass Media Director, giving a discussion on green screen magic at this past weekends' community-led workshop as part of the Louisville Young Filmmakers Festival)

Using Chroma Key


Using a green screen is a fairly simple process that can be done with a green cloth or brightly painted wall.

First, record a person or subject in front of the green screen and add it your video editing software. Next, you will need to utilize a tool called chroma key to remove the green leaving just the subject. (Tip: don't wear clothing that is the same color as the green screen, or else the background will bleed through.)

Next, add another background image or video clip in the same time frame on the storyboard of your video editing software to place the actor in a new background. (If you zoom in on your actor, be sure to zoom in on the background to match.) Adjust your sound levels and export your clip.

Free Video Editing Software


Here are some freely-downloadable software programs that have a chroma keyer:

Lightworks
Wax 2.O

For more information, be sure to check out some of the many video tutorials available on YouTube.

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