Profile cover photo
Profile photo
Andrew Meir
452 followers -
Trust me, I am an engineer...
Trust me, I am an engineer...

452 followers
About
Posts

Post has attachment
Somehow this passed me by unnoticed until now. Risc OS is open source, since last month.

Post has shared content
I've been out of the Netherlands for a year and I have to admit that it's been tough. For the first time, I find myself more than a little homesick - which is pretty bloody funny since I'm not actually Dutch. However, I’m lucky enough to have a few paintings from Wim van de Wege in my house. The subject matters are often quintessentially Dutch, which for a homesick-virtual-expat is like a small piece of home from home.

https://www.wimvandewege.com/
Add a comment...

Post has attachment
Ooooph. I've just realised that I've been working for three decades. Time flies. I thought that I might celebrate by sharing a few trade secrets. Not really secrets, more like tricks. I'm an electronic engineer who gradually drifted into software. However, I started out working with a small research team, producing mathematical models. One of the best early tricks that I learned - this one kept me in beer for several years - was regularised least squares. It's the usual linear least squares solution with a small quantity of extra coupling in the model/solution vector - often between neighbouring elements. It's useful when computing solutions for ill-posed systems - those where small changes in the observation space lead to large changes in the model space. It also has an interesting side effect that it allows a model space larger than the observation space - i.e. one can solve systems with more unknowns than knowns. To a luddite engineer like myself, that's the equivalent of black magic 😎.
Add a comment...

Post has attachment
The contents of the garden are going out in style.
Photo
Photo
11/11/2018
2 Photos - View album
Add a comment...

Post has shared content

Post has shared content
+John Wehrle shared this earlier. It's an interesting analysis on the fashion for antidemocratic nutjobs that we're currently encountering. The causes are pretty depressing. My take on it is basically human greed. Growth slowed and people wanted something and someone to blame. No matter that the election of nutters will make things worse.
The outlook for tackling this disease is much more positive and well proven - resistance.
Well worth the 17 minutes.
Add a comment...

Post has attachment
The idea behind self encrypting drives is that stored data is encrypted using keys that are randomly generated, and then wrapped (i.e. the key itself is encrypted) using a token based on a user's password or pin. To protect the contents, all you need do is assign the password.
This makes self-encrypting drives pretty bullet-proof, in terms of protecting the stored data at rest. Neither the manufacturer nor the fed's can get at the data without the user's password.
There's even a suite of standards that govern how these storage devices should present themselves to the host, in terms of protocols and meta-storage entities that maintain a standard encryption state model.
TCG drives also mandate a separate locking mechanism that stops any data access until the user has authenticated with their password.
That an implementor would store data keys unprotected, have empty/null default passwords protecting the keys, and a bloody wide open UART/JTAG on such a device... that's going to be one of life's eternal mysteries.
And I say this as someone who's produced several TCG storage implementations, none of which ever had these features 😎.
Add a comment...

Post has attachment
My houseguest.
Photo
Add a comment...

Post has attachment

FT Editorial on WTO and the UK.
(I can summarise it in four words: Global Britain my arse.)
The underlying phenomenon here is one that appears to have been severely overlooked or misunderstood by the more gung-ho Brexiters. The governance of the global trading system, as well as being fiercely technical, is frequently brutal and unsentimental. The UK can forget the idea that it will get an easy ride even from countries with whom it considers itself to have historical and political affiliations, like the US and Australia.
Britain faces a bumpy road ahead at the WTO - https://www.ft.com/content/e93b7abc-ddc7-11e8-8f50-cbae5495d92b via @FT
Add a comment...

Post has shared content
For some, if they're lucky, working during the commute and remote working in general will be valuable productivity boosters.
For others - and I'm thinking primarily of the poor chap who squatted at my feet in the vestibule of a packed Greater Anglia train riding into London last year whilst attempting to manhandle a colossal spreadsheet into some semblance of order - for those it will be a living hell.
If there happen to be any laptop designers reading this, let me tell you there are plenty of people who are lucky and - given chance - would pay good money for a device that works in full outdoors' sunlight and that is sand-proof :-).
This futuristic Dutch train finally renders your office obsolete http://tnw.me/3KXTpYY
Add a comment...
Wait while more posts are being loaded