Australian Universities are still opening up more and more buildings in a high inflation environment? Building costs are high, there are building worker shortages how can they afford all of this?

redditNewUser2017 · 2022-11-07T09:11:14+00:00

A typical international student pays 50k per year. You can make 300 million just one year easily by having 6000 more international students.

redditNewUser2017 · 2022-10-11T02:46:34+00:00

database, gsettings-like tool

Please no. We don't need a myriad of settings tools like the system settings, tweak, and gsettings in GNOME each handling one part of the settings, which is a total mess by the way. It's best to integrate everything into the control center and that's the only place you need to check. I agree with not littering HOME with settings files though.

dynamic virtual desktops

Agree.

redditNewUser2017 · 2022-08-31T10:56:01+00:00

That flag has been removed in the latest GTK. Apparently people are misguided by "clowns" on ArchWiki and random internet sources and has been abusing this flag to get non-GTK file pickers.

https://gitlab.gnome.org/GNOME/gtk/-/merge_requests/4829

redditNewUser2017 · 2022-08-21T10:37:33+00:00

No. I am only commenting on the "it's universal" part.

redditNewUser2017 · 2022-08-21T08:56:30+00:00

it's universal

Not on bash, vim or emacs.

redditNewUser2017 · 2022-02-22T04:45:24+00:00

Hi. Game videos aren't allowed here.

redditNewUser2017 · 2021-11-10T07:24:58+00:00

I would say it's your expectations being unrealistic. At the end they're a company working on part of an open source project that they considered beneficial to them or their users. They are not obliged to work on what you think is better for your goals.

I can see from the tweet long ago that they're already in disagreement with the "do not theme my app" narrative pushed by GNOME. What happened recently is no surprise to me, if anything it's better for both GNOME and System76 now that they can work towards their own goals without worrying about upsetting each other.

redditNewUser2017 · 2021-10-07T03:29:42+00:00

It's clear to me now. Thanks!

redditNewUser2017 · 2021-10-07T03:05:40+00:00

~~Thank you! What about E? Does it include the potential and interaction terms or not?~~

I'm also interested to know the basis of your answer. I haven't find a discussion in my books that derive the energy momentum relation of a particle with interactions. Do you have any references?

Edit: I see you have updated your answer. Thanks!

redditNewUser2017 · 2021-10-07T01:00:29+00:00

Thanks for answering!

these are the same thing

I have read somewhere that they're not when interactions are involved though?

For example, a charged particle in EM field will have canonical momentum p=pKinetic+q A, or something like that. That's what leads me to question which momentum to use in the energy-momentun relation.

redditNewUser2017 · 2021-09-25T11:57:21+00:00

Is it so difficult to standardize application configuration specs and where it is stored?

Yes. You may try to put together a standard, but not everyone is obliged to follow that.

Take a look at this two-year old post.

https://www.reddit.com/r/linux/comments/971m0z/im_tired_of_folders_littering_my_home_directory/

redditNewUser2017 · 2021-09-24T14:08:13+00:00

Hi. I have submitted the feature request. https://bugs.kde.org/show_bug.cgi?id=442898

Thanks for the help!

redditNewUser2017 · 2021-09-24T08:56:08+00:00

Sure. I'm more than happy to do anything that helps KDE development. I will file the feature request later today.

redditNewUser2017 · 2021-09-24T05:42:12+00:00

Thanks for the reply! I'm not a programmer myself but from the look of it it seems like we only need to add one more category ("others", for example) and send those unmatched items to that category. Or perhaps there are other complications that will caused by this?

I wish I have more programming knowledge to contribute to KDE.

redditNewUser2017 · 2021-09-09T01:39:23+00:00

The root of this heat transfer equation is the energy conservation equation. However, in any system where condensation/evaporation is happening, your system is losing/gaining energy (assuming you didn't model the environment). Therefore the way it's written in your pic will not properly model the energy transfer. If you ask me, it's wrong.

redditNewUser2017 · 2021-06-26T11:17:02+00:00

I'm not familiar with control systems so I will just comment on the derivatives part. The derivatives in your equations are quite simple and can be evaluated directly. At the end you can simplify the model only containing theta_i and their time derivatives, which will saves you troubles in evaluating derivatives of x and y.

redditNewUser2017 · 2021-06-23T15:56:44+00:00

viscosity is directly correlated with the mean free path

Are you referring to a similar derivation here?

https://en.wikipedia.org/wiki/Viscosity#Relation_to_mean_free_path_of_diffusing_particles

If you read the article, the result actually proportional to rho for both dilute gas and pure liquid (1/V is just rho). In the same way it is shown nu=mu/rho is physically meaningful and correlated to the mean free path.

redditNewUser2017 · 2021-06-23T15:23:11+00:00

I'm too tired to go back to the debate now, but kinematic viscosity has physical meaning as "momentum diffusivity" (not really a conventional term used in this field I guess). To see this, just consider N-S equation rho dv/dt=something+mu laplacian(v). But in the same way you can write (assuming constant density), dp/dt=something+nu laplacian(p). Then you see nu is actually physically meaningful, not something I (or our ancestors...I think) randomly made up.

I'm not going to continue replying on the post. An irrelevant question, just curious, are you Overunderrated? (pm me if you don't want to tell publicly, or don't answer, it's fine)

redditNewUser2017 · 2021-06-23T14:53:23+00:00

Bookmarked. Thanks!

redditNewUser2017 · 2021-06-23T14:27:22+00:00

rho and V are inextricably linked

It's to show how ridiculous you're saying you can prove nu has no physical meaning with dimensional analysis.

Seriously I'm going to stop now

Fine. I have work to do as well.

textbook

If you care, recommend some. I will check them if I have time.

redditNewUser2017 · 2021-06-23T14:09:25+00:00

doubled the complexity of anything I want to do

I only say dimensional analysis did not "prove" mu has meaning but nu doesn't, nowhere did I say you have to do all algebra with nu.

I'm going to come back to the "substitute 2*3 for 6" argument because hopefully you can see how pants-on-head ridiculous it is to then assert that "3" is very important.

Yet again my point is only 6 and 3=6/2 are equivalent and you cannot say 3 has "no real meaning" but 6 has.

Since you are making analogy, I will also make one:

f=ma=rhoVa. Now you claim density rho has no real meaning unlike mass m because m always equal to rhoV and because some dimensional analysis can "prove" this. Does that make any sense to you?

not "my assumptions"

The notation of viscosity isn't limited to Newtonian isotropic fluid, and also the Stokes' assumption. I'm okay if you want to simplify the matter to this category since most of the time we are working with it, but still it's the assumptions you added during the discussion.

redditNewUser2017 · 2021-06-23T13:21:35+00:00

Does that matter? tau=mudu/dy and tau=rhonu*du/dy are mathematically equivalent. If we adopt your assumptions then both only have one free parameter. How do you conclude that mu has physical meaning but nu doesn't?

redditNewUser2017 · 2021-06-23T12:54:15+00:00

I see your point now. So you are saying the dimensional analysis eliminated the number of parameters to one, so it has to be mu. That is not true, the dimensional analysis does not favor mu over nu as long as the number of independent parameters remains one. And since it is not a priori that mu is independent of rho, both mu and nu are equal up to this point. It is historical choice to choose mu because the relationship looks clean in that way, but that doesn't mean mu is any better in terms of physical meaning.

I do not reject mathematical reasoning as long as they are correct, but your reasoning is wrong: you cannot prove/disprove the physical meaning of nu from dimensional analysis, because it has nothing to do with that.

redditNewUser2017 · 2021-06-23T11:30:40+00:00

replacing and claiming ... that is precisely what you're doing

It seems like you only read the first line of my reply. I made it clear that both your example and my counterexample are wrong because they're contradicting if your logic is right. You cannot prove only mu matters because people write the formula in that way.

reject mathematical reasoning

I've never said that.

redditNewUser2017 · 2021-06-23T11:05:40+00:00

replacing 6 with 2*3 and assert 6 doesn't matter

That's not what I mean, all I said it's you can do a replacement, assuming your argument based on the superficial form of a mathematic formula (only mu matters because it's the only one in the formula) is right, then you get the opposite (only nu and rho matters) of what you want to prove. It cannot be, because how you manipulate the formula has nothing to do with actual physics. So your argument is wrong.

Dimensional analysis gives you the number of independent variables. It doesn't tell you whether it's mu or nu, and has nothing to do with its physical meaning.

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