# Ruiming Zhang

## 57 Flips | 2 Magazines | 13 Followers | @ruimingzhang | Keep up with Ruiming Zhang on Flipboard, a place to see the stories, photos, and updates that matter to you. Flipboard creates a personalized magazine full of everything, from world news to life’s great moments. Download Flipboard for free and search for “Ruiming Zhang”

### Getting Values From Quaternions

I'm using the Quaternion package:<p>Very simply, I would like to be able to get the individual components of the quaternions by themselves.<p>My problem …

### Map function on the specified location

I am sure there is a better way do this, could you give any better ideas?<p>If there's no formula or pattern to the colors, then you have to somehow …

### How can one write a robust ListableQ function?

I would like to have a test that determines if a particular function is Listable. In the case of Symbols this is merely a matter of checking …

### Removing Abs from Abs[a + Exp[I*c]b]^2

Title says it all. Mathematica produces sometimes expressions of the form<p>where all three quantities a, b and c are positive real numbers. That …

### How to include Mathematica animation in a PowerPoint presentation?

<b>Note: Cross-posted at Wolfram Community</b><p>I want to include a Mathematica animation in PowerPoint presentation. My code is:<p>I want to place the animation …

Hurry - once it's sold this opportunity will be gone!<p>Besides being memorable, .com domains are unique: This is the one and only .com name of it's …

### Efficient way to utilise Parallel features to make use of many cores

Let's say I have 100 cores/kernels as my disposal and want to compute a function of two variables f[x,y] over {x,1,10}, {y,0,59}. So in total 600 …

### Dell's 'Sputnik' Ubuntu Linux ultrabook: First in a new line?

Linux fans may recall the excitement that greeted the launch of Dell's “Project Sputnik” earlier this year.<p>Made possible through an internal skunkworks effort, the project aimed to create an Ubuntu-preloaded laptop targeting developers, in particular, with what Dell has called a “client to cloud” …

### Top Five Linux Contributor: Microsoft

While you shouldn't expect Windows to be open-sourced in your life-time, Microsoft—yes, Microsoft—is the fifth largest code contributor to Linux …

### Yahoo: The Linux Company

Everyone knows that Google runs on Linux, but at Linux Foundation Collaboration Summit, Yahoo revealed just how much it too replies on Linux.<p><b>San</b> …

### Google Drive for Linux Is on the Way

The Google Drive launch has been one of the big announcements of the week, but it was a fairly unequivocal disappointment for one vocal category of users: Linux users are justifiably miffed that the new cloud storage service doesn't support the free and open source operating system.<p>Such has been …

### Coming Soon: A 'Pure GNOME' Ubuntu Linux

Linux fans in general and Ubuntu users in particular are already well-acquainted with the many desktop environments that are available for distributions of the free and open source operating system.<p>While Ubuntu Linux has embraced the Unity desktop in recent iterations, there have long been …

### Microsoft unexpectedly ships a new version of Skype for Linux

Here's a surprise! After years of neglect, Microsoft ships a new major version of Skype, the popular VoIP program, for Linux.<p>Out of the blue, …

### Microsoft to Run Linux on Azure

After years of battling Linux as a competitive threat, Microsoft is now offering Linux-based operating systems on its Windows Azure cloud service.<p>The Linux services will go live on Azure at 4 a.m. EDT on Thursday. At that time, the Azure portal will offer a number of Linux distributions, including …

### The ultimate Linux starter kit for small business

Microsoft did its best to usher in a new era of desktop computing with the launch of Windows 8, but many businesses and individuals are opting out. Linux-based operating systems, meanwhile, present an increasingly compelling alternative. Benefits include tougher security and superior …

### How To: Switch From Windows to Linux

Are you geek enough for Linux?<p>Though it first earned a reputation as a platform for hobbyists and hackers, Linux has come a long way since Linus …

### Kali Linux Cracks Passwords and Finds Security Exploits on the Enterprise Level

Popular Wi-Fi password cracking tool Backtrack—used for security testing purposes only, of course—gets a special release today in the form of Kali …

### People's Republic of Open Source: China Preps National Linux Distro

The British Linux company Canonical is teaming with the Chinese Ministry of Industry and Information Technology to create Ubuntu Kylin, a Linux …

### Have an older PC? Try the new Ubuntu Linux-based LXLE

For users of Microsoft Windows, frequent hardware upgrades tend to be a fact of life in order to keep each new iteration of the resources-hungry operating system running smoothly.<p>Not so Linux, however, which is renowned for its generally small footprint and minimal hardware demands.<p>Some Linux …

Linux

### Parallella: The \$99 Linux supercomputer

Move over Raspberry Pi, here comes Adapteva's Parallella, a low-cost parallel chip board for Linux supercomputing.<p>Chip-company Adapteva announced on …

### More experiments with Linux-only UEFI Secure Boot installation

UEFI BIOS and Secure Boot work perfectly well with only Linux installed according to the experiments I have conducted on my own PC.<p>My recent series …

### This Cheat Sheet Makes Learning Your Way Around Linux Easy

Whether you're experimenting with Linux or making the switch, you'll need to get your bearings. This Linux cheat sheet runs you through common and …

### It just works: Dell XPS 13 Developer Edition Linux Ultrabook review

Dell's substantial investment in making a functional Linux Ultrabook pays off.<p>I've been terribly curious about the Dell XPS 13 Developer Edition …

### Ubuntu 13.04 Review: Linux for the average Joe or Jane

Hard core Linux fans won't care for it, but for the average user the new Ubuntu desktop Linux has a lot to offer.<p>The new Ubuntu Linux distribution, …

### Ubuntu 13.04: The Linux desktop for everyone (gallery)

Say hi to Ubuntu 13.04<p>Ubuntu 13.04's Unity interface is attractive and very easy to use even if you've never used Linux before in your life. Power …

Linux

### Linux 3.9 kernel release offers SSD caching and server performance improvements

The Linux 3.9 kernel brings with it an SSD caching, improved performance for multi-threaded network server applications and a host of other …

### Linux kernel 3.9 adds full Chrome OS support

Linux creator Linus Torvalds on Monday released version 3.9 of the Linux kernel, and particularly intriguing among numerous new features and improvements is support for laptops running Google's Chrome OS.<p>“Whatever the reason, this week has been very quiet, which makes me much more comfortable doing …