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kken

1,568 karma · joined January 3, 2013

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kken··on What we learned from analyzing 5000 email inboxes
median would be a more relevant metric.
kken··on Is Breakfast Overrated?
There is a lot of marketing fluff around this. "Brain Octane Oil"... ?
kken··on USBCondom
This!

I got lot's of these things from portable usb batteries.

kken··on Show HN: Pi Approximation using Monte Carlo
Small remark: The constant you are calculuating is usually denoted as a lower case pi, not upper case.
kken··on Microsoft laid me off after 15 years of service. Life after Microsoft?
I doubt that relo money plays any role in a decision for or against any candidate.
kken··on SwivelCard uses regular paper and has a USB drive embedded
Many companies have policies disallowing any foreign USB-Sticks. This diminishes the value of this concept in a professional environment significantly.
kken··on So Long Scrum, Hello Kanban
Anyone know a good comparison between Kanban and Scrum?
kken··on The Vacuum Transistor: A Device Made of Nothing
Sshhh.. It's not allowed to talk in that way about the graphene "transistor". You may upset certain funding sources.

But you know, it is really fast! Just almost useless transconductance and no off state, but we can fix it later!

kken··on The Vacuum Transistor: A Device Made of Nothing
>The problem is with carbon in general is it has a band gap

The band gap is not a function of the element alone, but mainly of the crystal structure. Different allotropes of carbon have vastly different band structures.

Diamond has a high band gap, as you mentioned. But Graphene has none, and that is one of the major obstacles of the material.

kken··on A Whirlwind Tour of ARM Assembly
"instruction set" would be more precise.

There isn't a single ARM instruction set, as it is with x86, for exmple. There are many different versions of it. Sometimes there are even significant variations within a family. e.g. Cortex M0 lacks many useful instructions that are only available in the M3/M4.

kken··on RunPee – Because movie theaters don't have pause buttons
I had to laugh
kken··on A Whirlwind Tour of ARM Assembly
There are so many different variants of ARM assembler, it is difficult to keep track of them all. Somehow ARM managed to get away with it.

I have been hacking Assembler level on many different architectures. Cortex M0 is the first one where I actively try to avoid it. It's just no fun.

kken··on Will 7nm And 5nm Really Happen?
>Secondly, having worked for semi: there's a lot of conservative force holding back development. We could have had current tech with much less worries than we have now if they didn't respond so allergically to everything that looks a little exotic in the CMOS process, like high-k dielectrics.

Such as? Getting new materials into manufacturing is only the last step. Before that there has to be a significant benefit of doing it. And yes, that is usually benchmarked against risks and capex.

kken··on Will 7nm And 5nm Really Happen?
HP and the Memristor is a good PR story. Unfortunately there is not too much beef behind it.

The Memristor is actually the same as an RRAM element (Resistive Random Access Memory). Companies other than HP have started working on it long before and are significantly ahead. For example Micron recently presented a multi-gigabit prototype chip. But there is still a lot to be done. HP lacks the funds, manpower and manufacturing muscle to really get anywhere in this area.

kken··on New Aluminum Air Battery Would Recharge By Filling It Up With Water
Title is highly misleading. The battery works by oxidizing Aluminium. So you actually recharge it by replacing Aluminium oxide with elemential Aluminium, which involves melting down the old battery and using electrolysis to seperate Aluminum from Oxygen.

I have not yet seen any estimate about the energy efficiency, but I doubt it is very good. This may be good as a emergency battery.

kken··on A new way to make laser-like beams
Misleading title. Semiconductor lasers are in general already >30% efficient there is no way to make a laser 250x more efficient. The researchers only improved a special type of laser (polariton laser)
kken··on The Pocket Handbook of Image Processing Algorithms in C (1993) [pdf]
The code style is making me nervous. Why use ++x over x++ when incrementing variables?
kken··on To protect business servicing machines, GE turns to the industrial Internet
The real reason why GE is turning to "industrial internet" is because European firms have started a similar initiative previously, called "Industry 4.0":

http://en.wikipedia.org/wiki/Industry_4.0

Of course, GE will try to establish its own standards, which are incompatible to those of their competitors (e.g. Siemens).

kken··on ‘Alien’ creator H.R. Giger is dead
>Gruyère

Also, cheese.

kken··on The Norwegian Tech Industry is All at Sea
Norway has quite a bit of hardware startups, which are otherwise rare in Europe. It's not all about Oil. Notable examples are:

- Nordic VLSI: Wireless ICs like nRF24L01, Basically responsible for the Blue Tooth Low Energy standard.

- AVR: Well known 8-Bit microprocessors. Sold to Atmel

- Energy Micro: Low Power ARM Microcontrollers. Sold to Silicon Labs.

- Phalanx: GPU Cores. Sold to ARM.

kken··on Icelandic High-Voltage Electrical Pylon Competition – Honorable Mention (2008)
Are these real? They look like concept art.

Amazing concept anyways.

kken··on Saleae, an SF hardware startup brings crafted logic analyzers
You are being really naive and unfair here.

Saleae suffered a lot from chinese copycats. People copied their hardware for pennies, while saleae was fair enough to provide their software without copy protection.

I think it is only fair they release custom hardware now.

kken··on THX Deep Note in 1kb html/JavaScript
Ok, this one definitely needs chrome to work correctly. Horrible clicking in Firefox.
kken··on Next Silicon Valley? Berlin's battle to be a tech hub
Not sure, but about that "taking down ancient buildings" thing, I believe the UK helped Germany a lot in that, although pretty much unasked for.
kken··on Next Silicon Valley? Berlin's battle to be a tech hub
€1000 per month for what? In Berlin, 1000€ would seem excessive.
kken··on Next Silicon Valley? Berlin's battle to be a tech hub
>dull, miserable, offensively expensive

None of these apply to Berlin. Flamebait much?

kken··on ARMiga – home made prototype of the next Amiga
So this is a boxed RPi with an Amiga Emulator?

There are a number of projects out there emulating an Amiga in a FPGA. That makes much more sense.

kken··on 2(048)
Too easy. Score 55200 in first game.
kken··on 50-Cent Microscope That Folds Like Origami [video]
In general, I believe the premise of this is a bit off. You often see that people from the west try to design "low-cost" devices for developing countries by introducing paradigm-shifting changes to the design. But this rarely seems to succeed. Just think of all the low cost computing device projects for Africa and India.

What won out in the end? Ultra-Low-Cost smartphones, basically offering the same functionality as the western counterparts but with cost drastically reduced by being based on completely domestic chinese designs and Android.

In this case, the problem is rather the education required to use the microscope and interpret the results. A professional will probably manage to finance a $50-$100 microscope, either second hand or as a knock-off, regardless of being in a third world country.

The paper microscope is a great toy or educational device though.

kken··on 50-Cent Microscope That Folds Like Origami [video]
Its a micro glass lens as described here:

http://arxiv.org/ftp/arxiv/papers/1403/1403.1211.pdf

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