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News: How Parental Choice Not to Vaccinate Kids Starts and Spreads Pertussis Outbreaks

It's not always easy to get to the root of an infection outbreak. Epidemiologists study infected people, contacts, and carefully examine where the infections happened and when. In the case of a 2012 outbreak of pertussis — whooping cough — in Oregon, scientists just published an analysis of how vaccination status affected when a child became infected during the outbreak.

How To: What Is Wordpress ? [Beginner]

WordPress started in 2003 with a single bit of code to enhance the typography of everyday writing and with fewer users than you can count on your fingers and toes. Since then it has grown to be the largest self-hosted blogging tool in the world, used on millions of sites and seen by tens of millions of people every day.

How To: Get an Ivy League scholarship

Ivy League schools are a students wet dream, but not everyone can get into them. Even fewer get scholarships for them. But in recent years, Ivy League universities have raised the number of scholarships they award to students. More students are seeking awards, making the application process for these scholarships very competitive.

News: Despite Effective Vaccine, Measles Still Threaten Worldwide

Nineteen days ago, several hundred people could have been exposed by a traveler with measles in Nova Scotia, Canada. The next day, someone flying from Minnesota to Nebraska may have spread the measles to other passengers. A couple weeks ago, it's possible that a man and his six-month old child spread the measles in several Seattle-based locations. Authorities are trying to locate persons who may have been in contact with these people. None of the persons with measles were vaccinated. Why?

News: Announcing the Null Byte Suite!

Hello, everyone. If you've been following my recent articles, you'll know that I've been rather busy lately working on a project, a rather large one. I've been working with Pheonix750 and Ciuffy to build the Null Byte suite of tools! I got the green light from our admin a while ago, and we've been developing like mad ever since! I'm very excited to launch this project. So, let's start by explaining what it is...

How To: Use the constraint system when programming in Clojure

One of the most obvious perks of using the Clojure is the user community organized around it. With this clip, the fourth installment in Sean Devlin's "Full Disclojure" series of Clojure video tutorials, you'll learn how to use the new constraint system in Clojure 1.1. Constraints are certain pre and post conditions that need to be met in order for a function to execute properly. If you've used D or Eiffel you've worked with constraints before. For more information, including a detailed, step-...

How To: Create frequency distributions with Excel pivot tables

If you use Microsoft Excel on a regular basis, odds are you work with numbers. Put those numbers to work. Statistical analysis allows you to find patterns, trends and probabilities within your data. In this MS Excel tutorial from everyone's favorite Excel guru, YouTube's ExcelsFun, the 15th installment in his "Excel Statistics" series of free video lessons, you'll learn how to use create a frequency distribution, relative frequency distribution, percent frequency distribution and pie chart wi...

How To: Create a two-variable data table in Microsoft Excel

New to Microsoft Excel? Looking for a tip? How about a tip so mind-blowingly useful as to qualify as a magic trick? You're in luck. In this MS Excel tutorial from ExcelIsFun, the 255th installment in their series of digital spreadsheet magic tricks, you'll learn how to create a two-variable data table in Excel for what-if analysis. See the PMT function and learn about the formula equivalent to a data table.

How To: Keep your identity safe from thieves

In this video, presented by the experts at the St. Louis Community Credit Union, learn how to prevent thieves from stealing your identity or account information. These days, between paper bills, Internet banking, social networking and all the other ways we interact, there are many ways for crooks to get into our private lives.

How To: Edit WordPress blogs on an iPhone/iPod Touch

A new introduction into the iPhone community is WordPress which easily allows you to easily control things like your WordPress blog on the move. Start off by tapping in your blog details, start writing a new post with a single tap, setting your tabs or publishing data right from the main editor through this. This also allows you to add photos directly taken from your iPhone's camera, you can change your publish date and set a password on your posts to decide who has access to them. Finally yo...

How To: Make elegant parchment flowers

Etsy is the place to get all your handmade needs and wants met. Etsy encourages personal connections between sellers and consumers. On Etsy you can connect with the handmade and crafty communities, and learn more about the process of making handmade goods like soaps, candles, invitations and more.

How To: Slow down your video in both Live Movie Maker and Windows Movie Maker 2.6

For all of the amateur film makers at home with a Windows PC looking to make movies, one effect that seems to be really popular in the YouTube community is slowing down a video to half-speed, specifically for nut shots and the like. If you're wondering how to do it in the new Windows Live Movie Maker, or like the older version of Windows Movie Maker 2.6, this video will give a quick over view of how to achieve the effect. Although, be warned that if you export it at a slower speed it will not...

How To: Share an embedded YouTube video directly on Facebook

So, you want to post a YouTube video to Facebook? Well, believe it or not, it's a really simple task to complete. Instead of just copying and pasting the URL into your comment box, Facebook has the option to choose a "link", which you would then copy and paste the YouTube URL into that box. Then you just click "share" and your whole Facebook community can now watch the YouTube video directly on Facebook. It's the easiest way to share videos with your Facebook friends.

How To: Work with cost & selling price markup in MS Excel

As you might guess, one of the domains in which Microsoft Excel really excels is business math. Brush up on the stuff for your next or current job with this how-to. In this tutorial from everyone's favorite digital spreadsheet guru, YouTube's ExcelIsFun, the 48th installment in his "Excel Business Math" series of free video lessons, you'll learn about the basics of markup on cost and markup on selling price. Markup on cost uses the base cost. Markup on selling price uses the base selling price.

How To: Calculate markup on selling price in Microsoft Excel

As you might guess, one of the domains in which Microsoft Excel really excels is business math. Brush up on the stuff for your next or current job with this how-to. In this tutorial from everyone's favorite digital spreadsheet guru, YouTube's ExcelIsFun, the 50th installment in his "Excel Business Math" series of free video lessons, you'll learn how to make calculations for markup on selling price in MS Excel.

How To: Add and subtract numbers with Excel's SUM function

As you might guess, one of the domains in which Microsoft Excel really excels is business math. Brush up on the stuff for your next or current job with this how-to. In this tutorial from everyone's favorite digital spreadsheet guru, YouTube's ExcelIsFun, the 10th installment in his "Excel Business Math" series of free video lessons, you'll learn how to add and subtract using the SUM function.

How To: Find confidence intervals without the sigma in Excel

If you use Microsoft Excel on a regular basis, odds are you work with numbers. Put those numbers to work. Statistical analysis allows you to find patterns, trends and probabilities within your data. In this MS Excel tutorial from everyone's favorite Excel guru, YouTube's ExcelsFun, the 82nd installment in his "Excel Statistics" series of free video lessons, you'll learn how to construct confidence intervals when the sigma value (the population's standard deviation) in NOT Known using the TINV...

News: Hak5 Just Released the Packet Squirrel

Hak5's products get a lot of attention. Popping up in popular shows like Mr. Robot, their hacking tools are bold proof of concepts with space built into the design for the community to add their own tweaks and modifications. On Friday, Oct. 27, Null Byte attended the Hak5 release event in San Francisco to check out their latest devices, including the new Packet Squirrel.