Make Your Own Six-Month Duration Images of the Sun’s Path Across the Sky

By Phillip Torrone, MAKEWednesday May 12, 2010

Project 1 Fig 1 May 2010 Rc Clifton Cathedral
Make Your Own Six-Month Duration Images of the Sun’s Path Across the Sky, Justin writes –

Pinhole photography suffers the illusion that, as its science is simple, it should be easy to master. In practice, creating an effective pinhole image requires learning many variables including: hole size, exposure times, digital vs analog and focal length–all topped off with a fear of getting the math right.

What follows is a simple and effective design of a pinhole camera that enables the user to capture six-month duration images of the sun known as solargraphs without the need for any chemicals or a darkroom.

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Wonder why we don’t crash like computers? Yale explains

By (author unknown), Gizmag Emerging Technology MagazineMay 11, 2010 at 07:55PM

The control network of bacterium E Coli, left, and the Linux operating system, right

Whether right or for wrong, the human brain is often compared to a computer, and vice-versa. They both receive data, process it, store it, and output new data. Unlike computers, however, the human brain doesn’t crash. Yes, people have nervous breakdowns, but that has more to do with psychological stress than with data management. Now, researchers from Yale University have figured out why our brains succeed where computers fail…
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ThreatFire – Free Zero Day Realtime Virus, Trojan & Malware Protection

By Saikat Basu, MakeUseOfMay 11, 2010 at 03:31PM

free virus protectionA name like ThreatFire unambiguously points towards a security tool. For the sake of world peace, thankfully it’s a computer security tool. In more precise terms, ThreatFire is a behavior based anti-malware protection system.

Still confused? Worry not, as in this post we look at what the free ThreatFire virus protection software is and what makes it a must have in your defense arsenal against the hordes of web based threats out there.


In a previous post on the Best Programs to Keep Your Computer Secure, ThreatFire deservedly got its space in the lineup of some really great free virus protection applications. But it has been two years since that post. Since then, security concerns have multiplied, bandwidth has quadrupled, and so have the complexity of the attacks against your lone computer.

So it’s time again to remind ourselves of the need to protect ourselves against multiple threats with multiple layers of computer protection. ThreatFire fits right in the scheme of multi-tier computer security.

What ThreatFire Is

Usually, anti-virus applications work on recognizing known threats. Known threat have signatures or ‘footprints’, which is the key information we download with the updates. A lot of anti-virus software cannot protect you against zero-day attacks. Zero-day attacks are brand new virus files against which security tools have no known protection. Against this, ThreatFire works by homing in on behaviors or patterns which suggest malicious intent.

free virus protection

So, ThreatFire has an ActiveDefense technology which offers real time PC protection by using sophisticated real-time behavioral analysis. ThreatFire protects against spyware, adware, key loggers, viruses, worms, Trojans, root kits, buffer overflows, and other malware.

There are programs like AVG Identity Protection which work similarly, but it is a paid download. Avast 5 has improved its behavior analysis engine and it has a real time behavior shield in its free anti-virus program.

What ThreatFire Is Not

free virus protection

ThreatFire is not a standalone anti-virus tool or a firewall. It is meant to be one part of your computer’s security set up that includes an anti-virus, firewall, and a spyware. ThreatFire is more geared towards active real time protection. It is not meant for cleaning up a computer which is already infected with malicious software.

Take for instance, a virus which is lying dormant waiting for a trigger. As it is inactive, ThreatFire’s technology based on recognizing behavior will miss the lurking threat. Though it can catch any malicious program that’s active, and quarantine it.

ThreatFire Works Behind The Scenes

ThreatFire (ver.4.7.0) from PC Tools is a small 8.59MB download. It is a no hassle set up and right away you will notice the features that are really likeable.

The first concern on installing another security app on top of the ones you already have makes you reach for the Task Manager and look at the memory being eaten up. With ThreatFire, the memory footprint is small. In fact, it’s smaller than running another browser or messaging app.

You, the user, do not need to configure anything. ThreatFire sits quietly in the System Tray and does its watchdog act. Advanced users can set their own rules via the Advanced Rule Settings. The rules can be easily set up using the wizard.

virus protection

Additional configuration options include a sensitivity slider for threat alerts. The default setting is good enough for less in-the-face actions from ThreatFire.

virus protection

As it is a real time security shield, you do not need to actively scan your computer. But if you are really paranoid, you can start up the Rootkit scanner. You can choose for a quick check with the Intelli-scan or go the whole hog with a Full Scan.

virus protection

The Threat Control Center is the place where you can manage the permissions for the processes. You can allow certain processes to run, deny selective ones, and manage the ones that are quarantined. The program maintains a protection log for all activities.

anti virus protection

Get Active Protection From The Community

anti virus protection

If Community Protection is switched on, you can send feedback via the program on any threats encountered. This information is automatic and helps to increase the real time efficiency of the program. The ThreatFire Secure Community is made up of active ThreatFire users who have volunteered to participate in the community program. The Protection Statistics screen above shows the numbers that go into the community screen.

The site is pretty informative on various aspects of the program. There is also a Submit a File or Report a False Positive page where you can upload a suspicious file for a check. The running blog also makes for a good read if you are into the stuff on computer security and prevention.

The free virus protection software is completely free for home use. It is compatible with Windows 7 (32-bit and 64-bit), Windows Vista (32-bit and 64-bit), Windows XP SP1, SP2 or SP3 (Home, Pro & Media Center Editions), Windows 2003, or Windows 2008.

ThreatFire is a well rounded security application that should sit well next to your anti-virus and firewall. Let us know if it should.

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German High Court Declares All Software Patentable

By StoneLion, SlashdotMay 20, 2010 at 10:40AM

FlorianMueller writes “Long gone are the times when Europe was that bastion of resistance against software patents and patents on such things as file systems were ruled invalid. In a decision published today, the Federal Court of Justice of Germany upheld a patent on the automatic generation of structured documents (such as XML/HTML) in a client-server setting. The ruling lays out general principles that go beyond the patent at stake: they tear down all barriers to software patentability in the largest EU member state, even though a European patent treaty has been adopted that was intended to exclude software from the scope of patentable subject matter. EU patent examiners recently warned against a drift toward software patents. Software patent critics in Europe fear this will spark more litigation on their continent and increasingly call for defensive measures.”

Read more of this story at Slashdot.

BCArchive – Quickly Create Compressed Files With Iron Clad Password Encryption

By Saikat Basu, MakeUseOfMay 19, 2010 at 03:31PM

Archive software that compresses and password protects a bunch of files with just a right click can be called uncomplicated. BCArchive deserves that virtue. Its speedy no hassle way to password protect a compressed file is appealing.

We have started off with speed. But it also has very powerful encryption algorithms which make it iron clad.

BCArchive is an unheralded and relatively lesser known file security tool. When it comes to file archiver tools, there are plenty to pick from. WinRAR is top of the pile among sharewares while 7-Zip might be the freeware choice. Every program does its own bit.


BCArchive’s facet is that it makes it easy for a newbie to create password protected archives without getting into the whys and how’s of encryption protocols.

To start off, BCArchive (v.2.02.7) is a free 2.93MB download. It is supported on Windows 7, Vista, XP, 2008 Server, 2003 Server, 2000, NT, ME, 98. It installs in a jiffy and you can access it from the desktop or take one of its three functions via the right click menu.

Let’s Archive & Encrypt A Bunch Of Files

The quickest way to archive and password protect a single file or bunch of files is from the right click menu. You can also do it from the main program window. Drag and drop is also supported. Select the files you want to compress and right click to see three options –

Create A BCArchive

Create and store your files in a secure encrypted BCArchive file. While creating a new archive file, you need to put in your password twice. Advanced users can set other encryption parameters and also choose public key encryption.

BCArchive prompts you to make random movements by mouse to generate a unique encryption key (random seed buffer) to complete the archiving.

Once your archive is created, you can keep on adding files to it. BCArchive encrypts them on the fly. BCArchive dynamically compacts the files. In case, you are adding or modifying the files in a large archive, you can turn it off and choose manual compact when you are done.

You can send the archive to your email program as an attachment.

Create A Self Extracting Archive

Create a self-extracted program containing the encrypted archive. You can take this with you or mail it to someone. You don’t need the program to extract all the files, just the password to unlock the executable file.

Create An Archive Using Public/Secret Keys

A key is a piece of code that locks or unlocks using a specific rule i.e. the encryption algorithm. BCArchive allows the use of key pairs (a public key and a secret key) to securely transfer files between two or more people. A Public key is used to encrypt data so that only an owner of the corresponding private key can decrypt the data.

With your own public/secret key pair, others can send you data encrypted by your public key which only you can open with your secret key.

To better explain it, here’s an example – You want to send a file to Mr. Smith. Mr. Smith has a public key which he sends to you or you can also access it from an internet location where public keys are stored. Once you have the public key, you can encrypt the data with it and send it to Mr. Smith. Mr. Smith then proceeds to open it with his unique secret key.

Public/secret key pairs are an extremely secure way of transmitting files. In case this is the first time, BCArchive helps you to create your own public/private key pairs.

Among other key algorithms, BCArchive supports PGP (Pretty Good Privacy). It’s not a pun, but probably the best military grade privacy and data encryption method you can depend on.

You don’t need to go to public key servers to get the encryption keys everytime. BCArchive has a local database (BC Key Manager) which stores the public keys of your contacts.

The highlights of the freeware make this an appealing option for compressing and transferring files. BCArchive has a detailed Help file which you can fall back upon. BCArchive mentions that it is limited to compressing up to 2 terabytes of data. But I think it would be a rare need for everyday use.

BCArchive is not only for the paranoid but also for us, as data hacking is almost a side industry. Let us in on your opinion on this freeware.

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3 Google Tricks When You Don’t Know What to Search For

By Ann Smarty, MakeUseOfMay 19, 2010 at 01:31PM

Google search tricksSometimes you are totally sure which terms to use to search Google to find the information you need.

However more often than not, you have to try dozens of various search phrases to accidentally come across a good result.

Today’s short search tutorial will show some Google search tricks you can use to search when you actually don’t know what you are going to find.

The tips will turn useful in a number of cases:

  • When you are looking for random inspiration and thus have no idea which words to use to search (actually what you really need to get inspired is to know those words);
  • When your topic is broad and you are unsure which one of related words and synonyms best describes your question;
  • When you have found a page, can’t define it properly but need more of the kind (especially, if you have landed on some wicked tool and want to know if there are more tools like this).

Now, let me share the Google search operators that will help you in any of the above cases:

1. Wildcard Search Operator

Search engines may treat a wildcard (*) differently. Google substitutes it for one or more words that would normally occur in the phrase. Thus, if you, for example, search [“reliable * provider”], search results will include: “reliable television provider”, “reliable webhosting provider”, “reliable VoiP provider”, etc.

Possible Usage

Thus two of the most obvious ways to take advantage of the search operator are:

  1. Use it when you remember the phrase but can’t remember the word;
  2. Use it to research various word combination with one or more base words (for keyword research or language learning);

Practical Example

Now, a more creative way to use it is to get some (content) inspiration. I described the method in my earlier post on finding linkbait inspiration: use a wildcard in between classic Digg headings to find which articles are being created to target social media sites. Examples include:

Google search tricks

2. ~ Synonym Search Operator

The Google ~ operator allows you to broaden the scope of your search to related terms and synonyms.

Possible Usage

The operator may turn particularly handy when:

  • Your search term is very broad and you are unsure which of the related words is used to describe the phenomenon.
  • You want to research related terms excluding the one you use (e.g. [~search -search])

Practical Example

When searching for guest post opportunities, the synonym ~ operator lets you include all possible blog topics in one search:

Google search tricks

3. Related: URL Search Operator

The Related: search operator allows to find more similar pages to the provided one. It used to be strictly based on co-citation: it looked for pages with the same set of backlinks to the above one. But since then it has been noticed that it also applied some thematic relevance.

Possible Usage

It is thus clear that the search operator should be used when you need to find more similar pages (especially when you can’t formulate the contents or define the concept of the current page).

Practical Example

The operator may turn very useful for bloggers who often create tool lists and overviews (for a website like MUO). As an example, here are the related results for a popular broken link checker: Xenu’s Link Sleuth.

google tricks

Also, be sure to check out Tina’s overview of all Google search operators to get more creative search ideas.

Which advanced Google search tricks do you use on a daily basis?

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Top 10 Backup Software Apps For Your PC

By Justin Pot, MakeUseOfMay 19, 2010 at 12:31PM

backup software for pcNot backing up your files regularly? You really should. There’s nothing worse in the computer world than losing all of your hard work – like your documents and projects – or your collection of fun – like your music and movies. You can do a lot to protect these files of course, but sometimes hard drives do fail. In those moments having a backup is crucial.

PC owners have a wide variety of options when it comes to backup software. We’ve documented most of them in the past, but they’ve never been compiled in a single list. It’s always easier to figure out what you’re interested if everything’s in one place, so without further adieu I give you the top ten free PC backup solutions.


I’m a coward, as usual, so I will not be ranking the different solutions. You can instead read the summaries and figure out what will work best for you.

Comodo/Time Machine

backup software for pc

Comodo’s got a pretty sweet collection of free software out there, from antivirus to firewalls to backup software. In the backup space they have two main offerings: Comodo Backup, a sync based solution to the problem, and Comodo Time Machine, which offers an all-encompassing solution similar to Time Machine on a Mac.

Which of these solutions you want depends largely on whether you want a single backup of your files – in which case you should go with Comodo Backup, or an all-encompassing backup of your system including software, in which case Time Machine would be the better fit for you.

Read more about Comodo Time Machine in Varun’s article Create Snapshot Backups of Data and Files with Comodo Time Machine or read about Comodo Backup in Aibek’s piece The Best Free Backup Software for Your PC.

Dropbox

backup software for pcWhile not strictly intended to be a piece of backup software, Dropbox does a pretty good job at making sure all your current projects are safe. Here’s how: keep all the projects you are currently working on in your Dropbox. These files will not only be synced to every computer you’ve installed Dropbox on, it will also be synced to the Dropbox servers. This means your current work is instantly backed up to all your machines as well as to the cloud the second you save it.

So while Dropbox may not be a complete backup solution, it can make a great supplement to an old-fashioned hard-drive backup. Check it out at Dropbox or read more about Dropbox right here at MakeUseOf.

Clonezilla

best pc backup software

If you want to back up everything – and I mean everything – on your hard drive, consider Clonezilla your go-to tool. This exceptional live CD can make a complete clone of your hard drive, operating system and all. This is perfect for preserving not only your documents but everything about your computer in terms of software.

True, it’s obviously not an automated thing – you’ll need to boot the CD every time you want to use it. But if you’ve spent hours setting up your computer exactly the way you like it, having a fail-safe to fall back on is always a good thing. Read more about Clonezilla in Benjamin’s article Clonezilla — Free Advanced Hard Drive Cloneing Software.

FreeFileSync

best pc backup software

If you’re looking for a dead-easy way to synchronize two folders, I highly suggest you check out FreeFileSync. This free program will scan two folders and make up the difference for you; a great way to update your external hard drive backup without re-copying everything. It will even inform you of the amount of data it needs to transfer before doing so.

This solution may not be automated but it’s pretty solid. Find out more in Jim’s article How to Keep your Backups Current with FreeFileSync.

FBackup

best pc backup software

If you’re looking to backup not only your documents but also the settings and plugins you use for a few specific programs (ie Firefox) you should checkout FBackup. This solution allows you to utilize plugins capable of locating the settings of a variety of different programs in addition to backing up your documents, and is worth considering for this reason.

Check it out in Varun’s article “Backup Program Data & Personal Settings with FBackup

Crashplan

pc backup software

Most of the solutions listed here assume you have an external hard drive to backup your files to. This solution can save you from hard drive failure but it isn’t perfect. If your house burns down, for example, it’s likely your computer’s hard drive as well as your external hard drive will be destroyed. For this reason many people prefer their backups be offsite. Dropbox can do a little of this for free, but for the most part there’s no free cloud-based backup solution.

With Crashplan, however, you can make use of your friend’s computer for your backup. This gives you an off-site backup for free (assuming you can find a trustworthy friend).  Best of all, this software works on Mac, Linux and Windows.

Check out Crashplan in Tim’s article How To Auto Backup Computer Files with CrashPlan.

PureSync

pc backup software

This is another synchronization option, and it’s always good to have options. PureSync can, as the name suggests, sync any two folders. These folders can be local, external or networked – even cloud-based folders can be utilized. It’s fairly easy to use and free, so you might as well check it out.

Read more about PureSync in Stefan’s article “Pure Sync: Free Backup and File Synchronization Tool.”

Hinx

pc backup software

Hinx is a another great backup service. Like most of the programs here you can automate your backup, unlike most of the options listed here, however, Hinx is a Java program. This means you can run it on just about any computer on planet earth, but it also means it won’t necessarily be the fastest piece of software you’ve ever used.

Still, it’s worth checking out if you want the same backup program on Windows as you use in OSX and Linux. Check it out in Aibek’s piece The Best free Backup Software for your PC.

Syncback

pc backup software

Yep, it’s another tool for local synchronization, though this one also supports backing up to an FTP server. Another feature that sets Syncback apart is the ability to leave out certain filetypes (ie MP3) or folders (ie C:/Documents/pron). It can be automated to backup in the background or you can use it manually.

Interested? Find out more in Mark’s article Backup your Hard Drive with SyncBack.

Mozy

pc backup software

This cloud-based backup service typically costs money, although there is a free trial version with 2 gigabytes of storage space (plus an additional gig for every friend you refer). You choose what files are backed up, and the program is good about telling you how much quota you have left.

Like Dropbox, the free version of Mozy probably isn’t good if it’s your only backup; it is however, a great instant supplement to a regularly scheduled full backup. Read more about Mozy in our directory. Jessica also reviewed Mozy for a previous giveaway.

Bonus: Windows Built In Backup (Vista and Windows 7)

Of course, if you have Vista or Windows 7, you’ve already got fairly decent backup software – both of these operating systems come with a built-in solution. If you’d rather not download a piece of software this is always something to keep in mind, although realize you can only use it to sync to an external or local network drive. We’ve not written it up here at MakeUseOf, but you can always read Microsoft’s propaganda about the feature over at Microsoft.com.

Note that while XP has a built-in backup utility as well, it’s best to avoid using it. The program is based on an old proprietary standard originally used to backup data to tapes (yes, tapes). Such backups are difficult, although not impossible, to recover on Vista and Windows 7 systems and practically impossible to recover on Linux and OSX machines.

Conclusion

There you have it: ten different backup solutions for you to choose from for your PC. Sure, many of these programs have overlapping features, but what works best for you will differ from person to person.

As such I’m certain many of you are making use of something not listed here. If that’s the case go ahead and share it in the comments below. Also feel free to share your thoughts on the software mentioned here, because I know you guys have a lot to say.

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Students accelerate cubicle arms race with PlayStation Eye-tracked, iPhone-guided coilgun (video)

By Sean Hollister, Engadget RSS FeedMay 19, 2010 at 07:37AM

DIY weaponry gets more lethal with each passing year; where once we were content with a simple foam missile launcher, technology has progressed such that our automated turrets now spew screwdriver bits, airsoft and paintballs. As progress forges ahead, two engineering students at the University of Arkansas have added injury to insult with this four-stage DIY coilgun. Using an Arduino microcontroller to actuate the firing mechanism and steer the monstrous wooden frame, they nimbly control the badass kit with an iDevice over WiFi, and line up targets using a repurposed PlayStation Eye webcam. While we’d of course prefer to have our phone SSH into the gun over 3G, we’re not going to argue with success. We’d like to keep our lungs un-perforated, thank you very much. See it in action after the break.

Continue reading Students accelerate cubicle arms race with PlayStation Eye-tracked, iPhone-guided coilgun (video)

Students accelerate cubicle arms race with PlayStation Eye-tracked, iPhone-guided coilgun (video) originally appeared on Engadget on Wed, 19 May 2010 07:37:00 EDT. Please see our terms for use of feeds.

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