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Estimado Edward Lee, celebro que su charla, por demás interesante, esté en nuestro universal castellano y que su infancia le brinde la memoria de nuestra lengua compartida, con el particular acento portoriqueño. Le agradezco también, por la enorme cantidad de materiales educativos suyos que empleo en mi labor educativa como profesor universitario. Saludos cordiales desde Argentina.

Rust vs. openheid

~43:00 I am really not surprised that Google reinvented the technique, because if you tell these people that a technique exists from the "cyber physical systems field" they will immediately stop listening and not care, because they don't recognize the buzz words from their line of work.

Pabably the best philosophical, scientific, and practical presentation...i have been looking for videos about Laplace demon via AI, and this is such a gem ❤❤❤

is lf seen as a tool in industries!?

Consistency is really 'the degree of Consensus of the Current State among participants in a system' in RT terms, co dependent w/ availability , each with some degree of 'designed in' elasticity to get 'the system' to work more or less as expected without 'hurting' any of the participants. great post thanks.

Hello! Could you please give some student task to compile ResettableServer for me - with PortParameter "reset" of type BOOLEAN which will call initialize(). I can't copily it there is bunch of errors on my system

Thanks for a really wonderful talk, Edward. Those two arXiv papers are really great and I'm quite surprised that they have been rejected for publication. Clearly the folks that reviewed them either don't have the necessary background to grasp the materials or perhaps just too incompetent to do so. Also, it is good to hear from Marjan at the introduction. Haven't chatted with her in a long time and looks like she moved from Iceland to Sweden. Best wishes to you for your sabbatical there in France as well as your travels around Europe. Also best wishes to Rhonda and hope she is enjoying her sabbatical as well. Will be in touch very soon. Take care.

Thanks for sharing

Thanks for posting the talk Prof. Edward Lee!

Excellent talk 👍

Hi, Doc. This is one of the best talks on the subject ever. I worked in the field for a few years but I gave up. Nobody working in cyber-physical/control systems has theoretical preparation in the subject. Most people have backgrounds in web development, or something else completely unrelated to timing. Tools like Ptolemy, Modelica and Simulink are not only unused, they are frowned upon. Maybe it's different in the States.

я не хочу писать эссе

regarding the thoerem 1, where I could read the section 3.2 and definition 2,3,4 thank you

In different target language, how does it declare a new data type?

There've been a lot of hardwork done. Thank you, professor. But the tool interface itself is counterintuitive and sort of crunch-based. Unfortunately we have tasks based on this tool without tutorial but the short introduction.

can u solve this question please and quick? - Build an actor model that recognizes the difference between single and double mouse clicks. The actor should have an input port named click, and two output ports, singleClick and doubleClick. When a true input at click is followed by N absents, the actor should produce output true on singleClick, where N is a parameter of the actor. If instead a second true input occurs within N ticks of the first, then the actor should output a true on doubleClick.

real-time, embedded, database, web server, deterministic... looks like the academician world is a bit aside from the practice. It would be nice to provide a case study from practice for this theoretical talk... otherwise, it sounds like an attempt to solve the conflict-resolution problem for a badly designed system... and do it by low-level languages (C, Python, etc.) with a fuzzy-defined wrapper to process a transport problem in the network (the deadline operator). Is it possible to demonstrate an advantage of the R/LT on the case study? case study description -- requirements -- design -- implementation in the R/LF(C) -- verification?

🌹🌹🌹🌷🌷🌷

oeeys5 #von.ong

thanks for the information, the quality of the video is low

great...thanks Mr lee

very great...thanks Mr lee

This is brilliant. I know this video is old, but the problem is shocking relevant. The video game industry needs this even more than the control system engineers... so many game-play and physics issues are critically timing dependent! Many games lock on to the monitor vsync or other signals in a desperate attempt normalize timing across different computers, but it's far from a perfect solution. Try running Skyrim on a 120Hz monitor instead of 60Hz... the first thing that happens is the horse flies into the air because the physics is getting its timing signals from the vertical blank. If the timing is wrong, the game explodes. If game timing could be reliably guaranteed in the compiler instead of by janky work-arounds, it could save millions of dollars in effort especially when porting between PC and console.

Dear Dr. Lee, on the Koptez principle slide, you say that those properties are in fact properties of the model and it makes no sense to assign them to the physical world. Could you please bring some reason for your claim?

How can one know, if the universe is not deterministic?

This talk is inspiring! Thank you professor!

A small correction at 52:34 - Typescript is being developed and maintained by Microsoft.

Oh, thank you so much, Edward Lee, thanks for God we heard you again. I have an MSc in Computer Science my interest area is Cyber-Physical, your video about CPS helped me a lot for my final project.

challenge #1 20:03 challenge #2 20:40 challenge #3 24:12

In reference to your comment @13:45 about a transistor in nature: www.tandfonline.com/doi/abs/10.1080/0020721031000147624

sounds like the movie minority report

You cannot observe the observer.

thanke you. how we can add simulink block into ptolemy?

laplace demon is basically reverse psychology where people who wants to "LOOK and SOUND SMART" creates a new "dimension of reality" in terms of words, terminology, etc..... that's why living on earth day by day is making it more and more difficult for everyone. imagine a GUN that shoots bullets where BULLETS is spelled B for boy U for ultra L for lion L for lion E for elephant T for tango S for sex is pronounced and spelled as it shows where in GUN for example is G for goat U for APPLE and N for nancy. imagine how stupid can one get? if you wanna pronounce GUN e.i. GAN then why not spell it as GAN as in G for goat A for apple and N for nancy. laplace demon as far as i've read in totality is something in which determining an absolute equilibrium's sudden and possible changes. therefore making it seem like a rocket scientist should have a very vast knowledge and money to continue research instead of spending money created from chopped up trees to buy new seeds and create more trees is much more important per se. and of course at the end of the day more and more people who thinks otherwise might call me stupid for not knowing red from white or black from blue where in retrospect is absolutely correct. people who wants to look smart believes in laplace demon, theory, whatsoever. in reality its just how you determine a routine of absolute value and how to change the course of it.

Excellent talk, thanks Mr Lee

This is such an excellent talk! I loved the part about not being able to execute multi-threaded software, because it will simply break the RT timing constraints.

appreciate your video on ptolemy. I was wondering if you have more video tutorials on ptolemy..

This is an excellent talk. I noticed some abrupt interruptions. I hope we did not miss any important information

wow, thanks for uploading this, Prof. Lee!

Excellent talk. Note that control engineers have been looking at these problems for many years, e.g. for embedded system timing read Motus & Rodd (1994).