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user: rhodin (* users last updated on 10/04/2024)
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created: 2009-04-06 17:29:46
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yeah I love the posterous-way of publishing things. Maybe pinging (technorati/twingly) is the next step?

Linköping, Sweden

Yeah quite cool, hope they'll roll out this feature for all of us!

I guess it takes a lot of self-experiments to find out. I usually go with this "one habit/month-approach" from T.Ferris: http://www.fourhourworkweek.com/blog/2009/01/07/the-power-of...

Yeah, I agree on that this material is not for hardcore math geeks - I would love to see some more honors courses and maybe graduate material

Agreed, totally worth watching. This book looks promising, and it will be released together with a comic style website =)

I'm missing: "Understanding Analysis" S. Abbott - great book on the foundations of Real Analysis, esp. for an honors course "Introductory Functional Analysis" E. Kreyzig

How much have they looked at Google and how much have this culture developed "on its own" in Moscow?

It's the kind of book you can spend a few days reading or a life time, just like "Zen and the art of motorcycle repair".

I've read half of it in 8 years, so maybe it's time to redo the whole process from beginning to end.


MapleSim only implements a subset of the Modelica standard.

I did a similar report last year, focusing more on consumption (books, movies..) http://johanrhodin.se/RhodinReport/RhodinReport2011.html Hopefully this can be automated. I still have too many manual steps to perform.

"The plot [on the front page] took about three minutes to produce on a Sun 3/260 computer."

Plot3D[Abs[Zeta[x + I y]] , {x, -2, 6}, {y, 2, 35}] takes 0.213483 on my laptop :)


Depends on what you mean by recent. In the last 10 years: yes, much faster for number crunching (like SVD, Cholesky, determinant computations, etc).

"Commonly used" depends on who you ask. I use it all the time to help me look up units. It may not be 1000 calls/day, but it's still useful. Also the #/calls can be expanded with enterprise Mathematica.

It was added in Mathematica 8 (see bottom of http://reference.wolfram.com/mathematica/ref/WolframAlpha.ht..., "New in 8").

Disclaimer: I work for Wolfram Research


"Power Programming with Mathematica". It's out of print, but can be found free of charge on the Mathematica StackExchange: http://mathematica.stackexchange.com/questions/16485/are-you...

This is a great collection of resources: http://mathematica.stackexchange.com/a/606/241 (The most edited post on all of StackExchange)


No. Results can be returned as plain text, images, Instant-APIs[1], WL-code and other.

[1] http://reference.wolfram.com/language/guide/CreatingAnInstan...

(Disclaimer: I work for Wolfram Research)


Fall 2015 I've heard



Also based on the Mathematica 10 kernel is the Programming Cloud which you can try for free: http://www.wolframcloud.com/

There's a private cloud option coming, where you can link to internal databases etc.

Some ideas and hacks to use to get a lot of Wolfram language into a tweet: http://blog.wolfram.com/2010/12/17/the-mathematica-one-liner...

Attended his defense of this, it was a ton of fun! "Defending the thesis"-slide had Joe, sword in hand, defending the thesis against a comic-styled dragon.

Nice site. On the front page it would be nice to see what it looks like after a couple of weeks using: will the user see a "heat map" of activities done/not done?

Colored coins and smart contracts.

Comments from the author over at Wolfram Community: http://community.wolfram.com/groups/-/m/t/138400#_19_message... I hope he has found a job by now!

Can potentially make it very easy to build IoT apps. Two examples: http://community.wolfram.com/groups/-/m/t/453169, http://community.wolfram.com/groups/-/m/t/454226

Discoverability of functionality in the system, and common ways to put things together, is an important topic. We (I'm an employee) are constantly improving our documentation system to make it easier to see what's there. With over a hundred thousand examples there's a lot of ground covered but more initiatives in this area are rolling out.

Can you connect a keyboard and (HDMI) screen?

WeChat requires almost all permissions possible on Android :(

Will it run on a phone so that I can connect a monitor to the phone and use it as a desktop OS, and then disconnect and use it as a phone OS?

It had a disclaimer, so should be fine.

Regarding the competitiveness of the US car industry: Vaclav Smil makes a slightly different case in "Made in the USA: The Rise and Retreat of American Manufacturing", where he points out that "For too long the machines stayed too large, too inefficient, and, on average, too unreliable." Add two oil crisis to that, quality problems and high prices and you get a perfect storm.

The NUMI story from This American Life was a great listen.


I wonder if it would be possible to get the levels from BlueMoon's first game "Kosmonaut" to run in OpenRoads.

Companies dealing with large amounts of data. A list with some companies using Apache Kafka can be found here: https://cwiki.apache.org/confluence/display/KAFKA/Powered+By

Not a "big player" (yet), but we've been offering Apache Kafka as a Service since June 2015: www.cloudkafka.com.

> Estonia has quite a few disadvantages - a tiny home market, a winter that seems to go on forever (although the weather was lovely for our visit), and poor connections with the rest of Europe.

The weather? Sweden and Finland both have longer winters and it has not stopped them. Poor connections? Estonians are everywhere (London, NYC, SF) and their tech companies are all "global first", with investors from around the world and targeting the global market directly.


Yes CloudAMQP is such a service. It includes a free plan. If you are going to use Celery and CloudAMQP, I'd advice using the recommended settings[1], otherwise Celery will produce a large number of connections + messages.

(Disclaimer: I work with CloudAMQP)

[1] https://www.cloudamqp.com/docs/celery.html


No, not Matlab but Mathematica: "We were inspired originally by the excellent implementation in Mathematica" [1].

[1] http://ipython.org/ipython-doc/dev/whatsnew/version0.12.html...


There's a mention of it in the WSJ article today [1], apparently they allow other cars to do the left, but not their own.

[1] http://www.wsj.com/articles/inside-ubers-new-self-driving-ca...


Interesting footnote: "The UT Austin Office of Technology Commercialization is actively negotiating license agreements with multiple companies engaged in a variety of battery-related industry segments."

I recommend the book "The Powerhouse: America, China, and the Great Battery War"[1], it goes into some detail about the legal issues around (one) li-ion design and Thackary's work with/without Goodenough and attribution.

[1] https://www.amazon.com/Powerhouse-America-China-Great-Batter...


StreetScooter started as a research project at the RWTH Aachen University, spun out as a startup, and was later acquired by Deutsche Post[1]. Hoping Germany can produce more such startups!

[1] https://en.wikipedia.org/wiki/StreetScooter


Go with a hosted solution: CloudKarafka, Aiven, Heroku Kafka, Eventador are all available. First one has a free plan too. Disclaimer: I work with CloudKarafka.

1. Yes you can say that Modelica has some heritage from ACSL. (See https://www.modelica.org/publications/papers/esm98his.pdf) but the short story is that some simulation language creators decided to form a uniform modeling and simulation language together instead of working on their own initiatives, resulting in Modelica.

2. Not really. Usually modified versions of DASSL/CVODES and friends are used by Modelica tools. In Cellier and Kofmans's book on simulation QSS gets prominent display and some of the research at Berkley Labs has been using QSS to some extent, but it is far from mainstream.


Does anybody know what the title of the biography about Landau is?

See also "computational essay"[1]. It is written with Mathematica notebooks in mind, but many of the ideas carry over to Jupyter notebooks.

[1] https://blog.stephenwolfram.com/2017/11/what-is-a-computatio...


Didn't Joe Armstorng use this to DJ at a Erlang User Conference? Can't find it now, but at least there is this talk from a years ago: https://www.youtube.com/watch?v=4SUdnOUKGmo

It is a nice book, highly recommend it!

This might be the Achilles heel of RabbitMQ. It works so well that people forget it for years, and then they have forgotten how to upgrade it, etc. :)

Disclaimer: I work for CloudAMQP

Yeah we hear you regarding AWS IOPS: for some type of loads and smaller plans we need to offer an alarm + an easy way to scale IOPS. It is something we're working on.


Check the vendors user stories: https://www.wolfram.com/system-modeler/customer-stories/ Check the Modelica conferences (https://modelica.org/events/modelica2019/proceedings/html/Mo...) and you'll see a lot of automotive companies (Toyota, Volvo, Bosch, etc)
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