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Math

Ask Slashdot: Replacing a TI-84 With Software On a Linux Box? 254

Posted by Soulskill
from the can-we-get-a-modern-display-on-these-things dept.
yanom writes "I'm currently a high school student using my TI-84 for mathematics courses. It has all the functionality I need (except CAS), but saying that the hardware is dated is putting it nicely. Waiting 4-5 seconds for a simple function to be graphed on its 96x64 screen just makes me want to hurl it at the wall. Recently, I've begun to notice the absurdity of doing my math homework on a 70's era microchip when I have an i7 machine with Linux within arm's reach. I've begun looking for software packages that could potentially replace the graphing calculator's functionality, including Xcas and Maxima, but both lack what I consider basic calculator functionality — xcas can't create a table of values for a function, and maxima can't use degrees, only radians. So, does anyone know of a good software package to replace my graphing calculator (and maybe provide CAS to boot)?"
Data Storage

NoSQL Document Storage Benefits and Drawbacks 96

Posted by samzenpus
from the pros-and-cons dept.
Nerval's Lobster writes "NoSQL databases sometimes feature a concept called document storage, a way of storing data that differs in radical ways from the means available to traditional relational SQL databases. But what does 'document storage' actually mean, and what are its implications for developers and other IT pros? This SlashBI article focuses on MongoDB; the techniques utilized here are similar in other document-based databases."
Windows

Can Windows 8 Succeed In a Cloud-Based World? 213

Posted by timothy
from the where-does-your-computer-end? dept.
New submitter Nerval's Lobster writes "To say that Microsoft has a lot riding on Windows 8 is a bit of an understatement. The upcoming OS needs to prove that Windows can stay relevant in a world where desktop-based programs are increasingly giving way to cloud apps, and mobile devices are eclipsing PCs as the center of people's computing lives. Can Windows 8 succeed in that mission? The real answer will have to wait, but in the meantime I've laid out some potential success-or-failure factors over at SlashCloud."
Open Source

Comparing R, Octave, and Python for Data Analysis 61

Posted by Soulskill
from the data-analysis-just-wants-to-be-free dept.
Here is a breakdown of R, Octave and Python, and how analysts can rely on open-source software and online learning resources to bring data-mining capabilities into their companies. The article breaks down which of the three is easiest to use, which do well with visualizations, which handle big data the best, etc. The lack of a budget shouldn't prevent you from experiencing all the benefits of a top-shelf data analysis package, and each of these options brings its own set of strengths while being much cheaper to implement than the typical proprietary solutions.

Comment: Re:And none with a decent interface. (Score 5, Interesting) 185

by scialex (#38825283) Attached to: Chromium-Based Spinoffs Worth Trying
But OTOH it is consistently inconsistent. On any OS/platform you can be fairly certain that if you fire up chrome/chromium it will look almost exactly the same.
Furthermore the fact is that chrome's ui is quickly becoming the standard browser ui. Both IE 9 and Firefox whatever the hell version they are at now look very similar to it.
The Courts

+ - Supreme Court upholds copyright Extension on Golan->

Submitted by Yo_mama
Yo_mama (72429) writes "The Supreme Court has ruled on Golan v. Holder, 10-545, which sought to overturn the reclassification of previously public domain works as copywritten.

"Neither congressional practice nor our decisions treat the public domain, in any and all cases, as untouchable by copyright legislation. The First Amendment likewise provides no exceptional solicitude for works in the public domain," Justice Ruth Bader Ginsburg said in her opinion for the court."

Link to Original Source
Android

+ - Why Android smartphones are larger than the iPhone-> 6

Submitted by tripleevenfall
tripleevenfall (1990004) writes "DisplayBlog details the reasons why Android phones tend to have larger displays than the iPhone:

"When the 960×640 3.5-inch Retina Display was introduced with the iPhone 4, the rest of the smartphone industry had to do something about it. At the time most of the competition was at 800×480 on displays much larger. With the Retina Display Apple shifted the focus of attention on a smartphone display to resolution, specifically to a resolution threshold of about 300 ppi on a smartphone that’s used at a distance of about 12 inches.

Android OEMs and Google responded to the 3.5-inch 960×640 Retina display by improving the pixel format to 1280×720. But because Android renders text and graphics like desktop OSes (e.g. Windows, OS X) increasing resolution above 320 ppi means smaller UI elements. The display had to grow in size to compensate for shrinking UI elements. iOS renders the Retina display not by shrinking UI elements by one fourth but by doubling clarity and sharpness. Unless Google adds an additional “DPI level” beyond XHDPI, Android smartphones that match or beat the iPhone 4/4S in resolution will always be bigger, much bigger.""

Link to Original Source
Google

+ - Microsoft can remotely delete Windows 8 apps-> 3

Submitted by tripleevenfall
tripleevenfall (1990004) writes "Microsoft will be able to throw a "kill switch" to disable or even remove an app from users' Windows 8 devices, the company revealed in documentation released earlier this week for its upcoming Windows Store.

"In cases where your security is at risk, or where we're required to do so for legal reasons, you may not be able to run apps or access content that you previously acquired or purchased a license for," said Microsoft in the Windows Store terms."If the Windows Store, an app, or any content is changed or discontinued, your data could be deleted or you may not be able to retrieve data you have stored," Microsoft said.

Both Apple and Google can flip such a switch for apps distributed by the iOS App Store and Android Market, respectively."

Link to Original Source

+ - US Supreme Court upholds removal of works from Pub-> 2

Submitted by langelgjm
langelgjm (860756) writes "While much of the web is focused on the SOPA and PIPA blackout, supporters of the public domain today quietly lost a protracted struggle that began back in 2001.The Supreme Court, in a 6-2 decision, rejected the argument that Congress did not have the power to convey copyright upon works that were already in the public domain. The suit was originally filed to challenge provisions that the U.S. adopted when signing the TRIPs agreement. Justices Breyer and Alito dissented, arguing that conveyed copyright on already existing works defied the logic of copyright law. Justice Kagan recused herself. The text of the opinions is available here (PDF)."
Link to Original Source
The Internet

+ - Harvard Business Review comes out against SOPA->

Submitted by
hype7
hype7 writes "The Harvard Business Review has come out with an article extremely critical of SOPA. As opposed to a battle of "content" vs "technology", they are characterizing it as a battle of "giants" vs "innovators". From the article: "If you take a look at many of the largest backers of SOPA and PIPA — the Business of Software Alliance, Comcast, Electronic Arts, Ford, L'Oreal, Scholastic, Sony, Disney — you'll see that they represent a wide range of businesses. Some are technology companies, some are content companies, some are historic innovators, and some are not. But one characteristic is the same across all of SOPA's supporters — they all have an interest in preserving the status quo. If there is meaningful innovation by startups in content creation and delivery, the supporters of SOPA and PIPA are poised to lose.""
Link to Original Source

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