Am working a bit on CUDA, most of the examples and tutorials i see deal with implementing mathematical functions on the GPU ( Like some vector / matrix calculations).
I was wondering if we can directly use the GPU to work on strings, no mathematical functions. maybe something like matching a bu...
Hey does anybody know a place where a person could get a VGA to composite cable to hook a computer up to a tv for display, seems I've got a capacitor going in my monitor as I get the shimmering black lines on startup for a minute or 2, on that note anybody know of a good place to buy capacitors
many laptops can only transmit WiFi at 32 milliwatts; many standard desktop cards can only transmit at 100 milliwatts, and 500 milliwatts is a typical cellular phone tx power
so yeah, 1 Watt is a relatively large amount of electromagnetic frequency in the air. on a wire it's a very low power, but in the air it's a lot
I am in awe, sir. You are a time traveler. I'd upvote this by the number of years between the last time OS/2 was popular and 2013 if I could, but unfortunately I can only meagerly +1 it. — somequixotic7 secs ago
@Bob ionization isn't relative to the tx power, but the frequency, I think. I think.
you could send several megawatts at a low frequency and it wouldn't ionize crap. see for example, a shockwave from a traditional bomb
the difference between a conventional bomb and a nuclear one is that the nuclear one emits EMF at extremely high frequencies, while the conventional emits EMF at low frequencies
@Bob how? that doesn't make much sense to me. you're saying you could create a really powerful low-frequency shockwave (think of an elephant stomping his foot, times, I don't know, a million) that would ionize stuff?
@Bob I think if you took an oscillator and started at 1 Hz and kept increasing the frequency of the oscillations higher and higher, eventually your mechanical waves that depend on a medium to propagate would become so high frequency that they reach the electromagnetic spectrum, and they can then "fly" without depending on a medium
> Even microwave radiation, which has a photon energy well below that of visible light and is usually considered non-ionizing, can be considered ionizing if it is intense enough
there's a breakaway frequency somewhere in there, there has to be, because waves are waves are waves, fundamentally they're the same, it's just that under a certain threshold they can't propagate without a medium to carry them
@Bob categorization is useful insofar as it has some practical explanatory power for our daily lives, but on a purely physics/mathematics level, if two putatively "different" phenomena can be proven to operate under the same set of rules or equations, they aren't objectively in different categories
Before closing my browser on a shared computer, I usually clear the browser data. On StackExchange, I am still logged after clearing my data.
open http://superuser.com/users/login
log in with google
visit http://chat.stackexchange.com/rooms/118/root-access
click login link on bottom ( http://ch...
for instance there's no physics reason to separate out 10 pound bags of luggage from 20 pound bags of luggage, but an airline might care because one can be carried on the plane and the other can't
@ruda.almeida my problem is a little different, on the chat.stackexchange.com/users page, there is no logout button, I logged out of SU and main SE site but nothing
well EMR is "visualized" as a wave because of the way that the particular electrons involved are moving through space, but the key observation is that the waves occur that way because there are actual moving particles (which particles? electrons) moving at the speed of light to produce those waves.
the way they're represented and the actual instantaneous physical occurrences are two different things
what happens when EMR is emitted? electrons are moving through space
how do we explain it in terms of our physical models? usually via the propagation of waves
@Bob but how can something (electrons) produce something which is going faster than itself? if the thing that's traveling at the speed of light is going faster than the thing that's producing it, there's a bit of a conundrum there... and also, if the wave itself isn't made up of electrons moving in a wave-like fashion, then what is the wave?
I think the whole EMF theory about waves propagating at the speed of light is idealized and not taking into account special relativity
that is to say, the actual speed of the electrons moving as part of a propagating wave phenomenon, whether in a vacuum or not, are moving at relativistic speeds, but not at actual c
okay; so you have a vacuum, i.e. a region of space with no matter (nothing that has mass) in it; and you send EMR through this region of space. we already know and accept that the EMR will propagate through this vacuum even though nothing was there preceding it. the EMR is matter, though, because it's not simply a massless vacuum that we're sending, right?
Take electricity for example. The electric field is effectively instantaneous (i.e. very very fast), while the electron movement is measured in centimetres per second.
the EMR is composed of an extremely small amount of matter; particles (electrons) made up of quarks, etc. otherwise it wouldn't exist. you'd see nothing.
@ruda.almeida: I think there's a clear difference between tasks that need processor power, and fundamental rendering. I think I can get SU chat or discource working on a hypothetical PII, but not say youtube
I encountered a thought provoking article suggesting that electrons are electromagnetic waves. Is this possible? I may not agree with their entire model, but surely there is the possibility that an electromagnetic wave might impersonate a some aspects of a point charge through aligning its electr...
Yes you are completely right, but it took an intellectual revolution for physicists to realise that it made sense to have a wave that wasn't the motion or jiggling of some physical medium, a wave that could exist equally well in empty space.
All light is electromagnetic radiation. But to ask « ...
Light is an oscillating electric and magnetic field, so it is electrical and magnetic.
Later: re the edit to your question, I think there are two issues. Firstly the interaction with electric charge and secondly the interaction with magnets.
Light does not carry any charge itself, so it does no...
This has been adressed ad-nauseum. Photons have energy, which is "relativistic mass" (meaning just energy divided by c^2 so that it gets units of mass) and "relativistic mass" is the source of gravity, not "rest mass". The rest mass is zero, but the energy is not, and energy is the source of gravity. There are at least two other questions here about this, but I don't remember which. — Ron MaimonDec 30 '11 at 13:33
General relativity, or the general theory of relativity, is the geometric theory of gravitation published by Albert Einstein in 1916 and the current description of gravitation in modern physics. General relativity generalises special relativity and Newton's law of universal gravitation, providing a unified description of gravity as a geometric property of space and time, or spacetime. In particular, the curvature of spacetime is directly related to the energy and momentum of whatever matter and radiation are present. The relation is specified by the Einstein field equations, a system of ...
I strongly suspect a rogue application (or service or bug) in my Windows 8 laptop which kills my explorer process and at times makes the taskbar unresponsive showing the busy icon all the time. Hence I have to use Alt+Tab to switch over between application. When the taskbar becomes unresponsive ...
From my point of view, there's really nothing to be done
It's a pretty horrible troubleshooting question and one user gave you a list of troubleshooting tools while the other did some troubleshooting with your dumps, yay
@Bob I find the highlighting terribly annoying and not useful actually :P Maybe I should disable it... I can never see which one is the selected process
@Bob sure - if you're having problems with the .NET Framework improperly loading an executable, using the wrong .net framework version, or crashing very early (in a class loader or assembly)
@Bob It's so that when you want to see what is using up all your resources and you open the Process Hacker that you can go "Oh Jesus effing Christ!!! It's one of those stupid .NET applications again!!!"
it's funny too because you can actually load a .NET Framework Runtime into an ordinary native process, and the process hacker tool would be none the wiser if it's just reading the PE header
it would be awesome if you could load .NET into a SUA executable (POSIX subsystem)
then again i have no idea what kind of weird restrictions and environmental parameters are assumed when you declare an application to be in the POSIX subsystem
it might not even be able to map native Win32 images into the same process space as a POSIX executable
they should make the POSIX subsystem a default, builtin feature of all versions of Windows ... to make the Linux/UNIX guys happy... Cygwin would become fairly pointless once the userland tools built up around the POSIX subsystem (provided they were open source tools, of course)
I don't think it would take Microsoft all that long to re-write any software they ship to customers either in Windows or in one of their other products that uses VBScript -- they could rewrite it pretty easily in C# or PowerShell. that said, it would indeed break a crapton of third-party software, and ALL of our testing framework written in VBScript
would I miss our VBScript testing framework though? NO
@Bob I gradually learned how to write C#-equivalent-stuff in PowerShell, thereby making most of PowerShell's syntax irrelevant, and only using a very sparingly few cmdlets
the array unrolling is my least favorite feature in PS
@somequixotic Well, you'd just end up with something even more broken. Probably written in JavaScript running in IE with additional privileges through an ActiveX control.
@Bob no. actually, no. not at all. we have actual sane people here, a small number of them, who are using Selenium with PhantomJS and WebDriver, and writing a separate test framework in Java, although it can be interfaced to with C# and a few other languages
I once wrote some script, don't even know what it was anymore, and then I got to some point where the documentation said "not supported for JScript, lol"
Dim originally (in BASIC) stood for Dimension, as it was used to define the dimensions of an array.
(The original implementation of BASIC was Dartmouth BASIC, which descended from FORTRAN, where DIMENSION is spelled out.)
Nowadays, Dim is used to define any variable, not just arrays, so its mea...
implicit declaration is in PS too, and type inference, but you can also explicitly declare a variable of a certain type in PS, and it's necessary to do so on rare occasions when using .NET
@Bob you know what's even better? (and this is COM in general) -- if you just "Let" (the default operator for =) a variable to an object, you get an error, but if you wrap the object in a Variant, you can Let the variable to the variant
Dim a 'implicit type: Variant
a = CreateObject("foo") 'error
set a = CreateObject("foo") 'success
a = Variant(CreateObject("foo")) 'success, but you pay for it with a variant wrapper, which is slow
So i need to delete Program Files (x86) folder.
It won't happen because some dll cannot be deleted. First of them is common/.../dao360.dll
Like in this tutorial http://www.001easytricks.com/2012/06/delete-program-files-x86-from-windows-7.html
I've tried to change ownership to my Admin user usi...
Just mount the volume read-write on another operating system that can read and write NTFS (for example, Linux's ntfs-3g, or another Windows computer), then delete the directory. Done.
kind of a sarcastic answer; I don't actually expect that deleting that folder is going to do him any good :)
I strongly suspect a rogue application (or service or bug) in my Windows 8 laptop which kills my explorer process and at times makes the taskbar unresponsive showing the busy icon all the time. Hence I have to use Alt+Tab to switch over between application. When the taskbar becomes unresponsive ...
> Though you did a clean install from Windows 7 (64 bit) to Windows 7 (32 bit), you still had a "Program Files (x86)" folder and a "Windows.old" folder. You are able to delete the "Windows.old" folder but the "Program Files (x86)" folder will not be deleted without trusted installer permission.
I don't think that would break many programs, since almost all programs will automatically dereference the symbolic link (NTFS symlink, not a Windows Shell Shortcut; very different) or indeed not even be aware of the fact that it is a symlink
it seems weird but I don't think it's outside the realm of semi-reasonability to try to do that
But, yeah, we got pretty low flag handling times and no complaints really. It would probably be nice to have some more diversity in active time zones, as Daniel, slhck and myself are in the same one
my activity on the main site dropped off a lot since i realized how fun / easy / casual chat is, so i'm an awful candidate :P would being a mod motivate me to do more? probably yes, but for the long haul? dunno, maybe, maybe not
and i'm already effectively a chat moderator by being a room owner :D
I have had minor problems with my emails, sending messages to contacts emailing me saying " email not received. But i am getting them. I am on XP and run my emails through outlook.
I was told XP is going obsolete and Windows 8 means i will need anew processor and mother board. Am i better getting...
Being a site mod is very stressful, at least for me. It's just crap after crap and people starting fights and flagging stuff for stupid reasons. So, yeah, you should definitely run! :D
A few things:
Windows XP is not going obsolete; it's obsolete. Right now. It's flat-out ancient software. It has unresolvable security flaws. It has reliability problems that are solved in newer versions of Windows. New programs, and new versions of old programs, are starting to drop support fo...
My mother is buying a new car. My car is new-ish (July 2012), but hers are well over 12 years old, and very undesirable to drive, as well as somewhat precariously balanced in that part of their lifecycle when they're over 100,000 miles, but somehow miraculously able to continue running without any obvious problems.
I'm going to take her to pick it up tonight, she already did all the paperwork.
The car she's buying is a lot better than mine (as far as sheer features, and safety package and stuff), but worse gas mileage. It's a full-sized sedan.
I have a 2012 Honda Civic EX. She is buying a 2014 Chevy Impala. They completely re-did the Impala in 2014. It has a new engine, a new safety package including all sorts of incredible things that let you know before you get blindsided, etc.
I live with her, so I'll get to drive it occasionally, but to work and back every day I'll still be driving my car. The only techie safety feature my car has is the backup sensor, which provides a low-tech "beep! beep! beep!" noise if I'm within a few feet of hitting an object behind me.
hers has the backup camera, plus a lane drift warning, plus a "you are trying to merge into a lane where a car is in your blindspot, dummy!" warning, plus a "whoa, the people ahead of you are slowing down but you're not!" warning
Personally, for my uses, I would rather have my current car than the one she's buying, because I get much better MPG, which is good for the environment and good for my wallet. And my car is much cheaper, too, let alone the gasoline savings.