Meltdown and Spectre: What they are, who’s affected, and what’s being done about them

ArsTechnica has a concise, well-written article on two recently-disclosed vulnerabilities found in nearly all Intel processors and some AMD and ARM processors.   Particularly worrisome is the impact these flaws can have on virtualised environments, which includes cloud-based virtual machines and their hypervisors.  Remedying these vulnerabilities will ultimately require replacing the processors.  However, near-term software-only solutions have been developed and are already being deployed.   This article gives a good, moderately technical overview of the what, who, and how of the flaws and the fixes.

A Gentle Introduction to Quantum Computing

A very good, truly gentle intro to quantum computing.  A basic understanding of probability and complex numbers is required.  But, if you’re truly interested in gaining a basic understanding of QC’s mathematics, you’ll likely already be familiar with those.

ABSTRACT: Quantum Computing is a new and exciting field at the intersection of mathematics, computer science and physics. It concerns a utilization of quantum mechanics to improve the efficiency of computation. Here we present a gentle introduction to some of the ideas in quantum computing. The paper begins by motivating the central ideas of quantum mechanics and quantum computation with simple toy models. From there we move on to a formal presentation of the small fraction of (finite dimensional) quantum mechanics that we will need for basic quantum computation. Central notions of quantum architecture (qubits and quantum gates) are described. The paper ends with a presentation of one of the simplest quantum algorithms: Deutsch’s algorithm. Our presentation demands neither advanced mathematics nor advanced physics.

Noson Yanofsky et al.

 

What does the Quran really say about a muslim Woman’s Hijab? (TED Talk)

In recent times, the resurgence of the hijab along with various countries’ enforcement of it has led many to believe that Muslim women are required by their faith to wear the hijab. In this informative talk, novelist Samina Ali takes us on a journey back to Prophet Muhammad’s time to reveal what the term “hijab” really means — and it’s not the Muslim woman’s veil! So what does “hijab” actually mean, if not the veil, and how have fundamentalists conflated the term to deny women their rights? This surprising and unprecedented idea will not only challenge your assumptions about hijab but will change the way you see Muslim women.

Samina Ali is an award-winning author, activist and cultural commentator. Her debut novel, Madras on Rainy Days, won France’s prestigious Prix Premier Roman Etranger Award and was a finalist for the PEN/Hemingway Award in Fiction. Ali’s work is driven by her belief in personal narrative as a force for achieving women’s individual and political freedom and in harnessing the power of media for social transformation. She is the curator of the groundbreaking, critically acclaimed virtual exhibition, Muslima: Muslim Women’s Art & Voices.