Hood Posted June 20, 2017 Report Share Posted June 20, 2017 (edited) I'm (or am about to be in the following month) an electrical engineer. I used to convert coordinates from cartesian system to spherical one at 3 am, then I upgraded and solved power system equations using Newton Raphson Method (God! That was 9 pages long ), finally I decided I should design a transformer which was plug and chug.(someone teach me autoCAD, I would love to show some graphics). Now, I think I shall be going to a computer company writing codes in Java or Python (that's the job I got last November).It is the fate of most of non-CS engineers here. Here (in my hometown) when I say I am an electrical engineer, people assume either of the two things: i) I am an electrician with a bachelor's degree. ii) I am one of those utility section people who spend their days lying in substation control rooms (which have switchgear protection and control mechanism regarding transformers, and general supply you are receiving) and come out of their slumber only when some fault occurs. I don't mind the second, to be honest, I even like it. But the first one irritates me. Electrical engineering is just so much more than what a local electrician does. Yes, he can repair your motors and fans, but even they don't know the principles behind their work. We know why each component is there in the place. Edited June 20, 2017 by Hood Clarification 0 Quote Link to comment Share on other sites More sharing options...
Mestiv Posted June 20, 2017 Report Share Posted June 20, 2017 @Hood practice your Python so you can help with Palanaeum 0 Quote Link to comment Share on other sites More sharing options...
Silverblade5 Posted June 21, 2017 Author Report Share Posted June 21, 2017 On 6/20/2017 at 0:30 PM, Hood said: I'm (or am about to be in the following month) an electrical engineer. I used to convert coordinates from cartesian system to spherical one at 3 am, then I upgraded and solved power system equations using Newton Raphson Method (God! That was 9 pages long ), finally I decided I should design a transformer which was plug and chug.(someone teach me autoCAD, I would love to show some graphics). Now, I think I shall be going to a computer company writing codes in Java or Python (that's the job I got last November).It is the fate of most of non-CS engineers here. Here (in my hometown) when I say I am an electrical engineer, people assume either of the two things: i) I am an electrician with a bachelor's degree. ii) I am one of those utility section people who spend their days lying in substation control rooms (which have switchgear protection and control mechanism regarding transformers, and general supply you are receiving) and come out of their slumber only when some fault occurs. I don't mind the second, to be honest, I even like it. But the first one irritates me. Electrical engineering is just so much more than what a local electrician does. Yes, he can repair your motors and fans, but even they don't know the principles behind their work. We know why each component is there in the place. Nice. What's your concentration? 0 Quote Link to comment Share on other sites More sharing options...
Hood Posted June 22, 2017 Report Share Posted June 22, 2017 Bachelors of Engineering (Electrical) with standard core electrical courses (power system, machines, power electronics etc.) and some optional subjects. 0 Quote Link to comment Share on other sites More sharing options...
Silverblade5 Posted June 29, 2017 Author Report Share Posted June 29, 2017 I love this comic https://xkcd.com/730/ 0 Quote Link to comment Share on other sites More sharing options...
Oversleep Posted June 29, 2017 Report Share Posted June 29, 2017 7 hours ago, Silverblade5 said: I love this comic https://xkcd.com/730/ I think I recognized a JK flip-flop. And an integrated circuit. I never expected to make use of that knowledge. 0 Quote Link to comment Share on other sites More sharing options...
Mestiv Posted June 29, 2017 Report Share Posted June 29, 2017 26 minutes ago, Oversleep said: I think I recognized a JK flip-flop. And an integrated circuit. I never expected to make use of that knowledge. Well, I recognized a flux capacitor 0 Quote Link to comment Share on other sites More sharing options...
Silverblade5 Posted June 29, 2017 Author Report Share Posted June 29, 2017 7 hours ago, Oversleep said: I think I recognized a JK flip-flop. And an integrated circuit. I never expected to make use of that knowledge. No, the was just a simple SR-latch. JK Flip Flops have a clock signal to enable. 0 Quote Link to comment Share on other sites More sharing options...
Glamdring804 Posted July 1, 2017 Report Share Posted July 1, 2017 On 6/28/2017 at 7:09 PM, Silverblade5 said: I love this comic https://xkcd.com/730/ Holy crap. The number of Kirchoff loops in that tangle of resistors is making my head hurt. 0 Quote Link to comment Share on other sites More sharing options...
Silverblade5 Posted July 11, 2017 Author Report Share Posted July 11, 2017 10 hours ago, Hood said: Graduated. Now I am officially an Electrical Engineer. In that case, think you can explain to me why DeMorgan's theorems are able to work? 0 Quote Link to comment Share on other sites More sharing options...
Oversleep Posted July 11, 2017 Report Share Posted July 11, 2017 10 minutes ago, Silverblade5 said: In that case, think you can explain to me why DeMorgan's theorems are able to work? Is this about the boolean algebra laws? 0 Quote Link to comment Share on other sites More sharing options...
Silverblade5 Posted July 11, 2017 Author Report Share Posted July 11, 2017 Just now, Oversleep said: Is this about the boolean algebra laws? It is. ~(a+b) = ~a * ~b 0 Quote Link to comment Share on other sites More sharing options...
Oversleep Posted July 11, 2017 Report Share Posted July 11, 2017 Just now, Silverblade5 said: It is. ~(a+b) = ~a * ~b And... what is it that you want explained? I mean, if you make a table of truth, you can see why is that working: 0 Quote Link to comment Share on other sites More sharing options...
Silverblade5 Posted July 11, 2017 Author Report Share Posted July 11, 2017 Just now, Oversleep said: And... what is it that you want explained? I mean, if you make a table of truth, you can see why is that working: I've been trying to find a proof, but can't figure out a good way to google, so I figured I'd ask for one here. I understand the laws, I just want to be able to see a derivation. 0 Quote Link to comment Share on other sites More sharing options...
Hood Posted July 12, 2017 Report Share Posted July 12, 2017 18 hours ago, Silverblade5 said: In that case, think you can explain to me why DeMorgan's theorems are able to work? We did this by making Venn diagrams. You can find that easily on YouTube. 0 Quote Link to comment Share on other sites More sharing options...
Silverblade5 Posted September 9, 2017 Author Report Share Posted September 9, 2017 (edited) Challenge: Using the given values, define a function for f(x, y), then evaluate f(4, 3) Given: f(x, y) is defined recursively f(1, y) = f(2, y-1) Hint: Values can easily be found by differentiating a certain trig function many times over. f(1, 1) = 1 f(1, 2) = 2 f(1, 3) = 16 f(2, 1) = 2 f(2, 2) = 16 f(2, 3) = 272 f(3, 1) = 4 f(3, 2) = 88 f(3, 3) = 2880 f(4, 1) = 8 f(4, 2) = 416 f(4, 3) = 24576 f(5,1) = 16 f(5, 2) = 1824 f(6, 1) = 32 In 5 or 6 hours, I will post the answer. Edited September 10, 2017 by Silverblade5 0 Quote Link to comment Share on other sites More sharing options...
Oversleep Posted September 9, 2017 Report Share Posted September 9, 2017 7 hours ago, Silverblade5 said: Challenge: Using the given values, define a function for f(x, y), then evaluate f(4, 3) 7 hours ago, Silverblade5 said: f(4, 3) = 24576 Is this how it was supposed to be? 0 Quote Link to comment Share on other sites More sharing options...
Silverblade5 Posted September 10, 2017 Author Report Share Posted September 10, 2017 (edited) 55 minutes ago, Overstorm said: Is this how it was supposed to be? No, I mistyped the target. Evaluate at f(4,4) Edited September 10, 2017 by Silverblade5 0 Quote Link to comment Share on other sites More sharing options...
Oversleep Posted September 10, 2017 Report Share Posted September 10, 2017 (edited) 22 hours ago, Silverblade5 said: No, I mistyped the target. Evaluate at f(4,4) Ugh... I got the Spoiler f(x,y) = A * 2^(x+y-2) for y=1 A=1 but I haven't figured out what A is yet. Is what I got so far correct at least? I've made some progress with y=2 but not much more. Edited September 10, 2017 by Overstorm 0 Quote Link to comment Share on other sites More sharing options...
Silverblade5 Posted September 11, 2017 Author Report Share Posted September 11, 2017 6 hours ago, Overstorm said: Ugh... I got the Hide contents f(x,y) = A * 2^(x+y-2) for y=1 A=1 but I haven't figured out what A is yet. Is what I got so far correct at least? I've made some progress with y=2 but not much more. That's not what I got. Hint: try differentiating the tangent function a few times. I'll post the actual answer tomorrow 0 Quote Link to comment Share on other sites More sharing options...
Silverblade5 Posted September 12, 2017 Author Report Share Posted September 12, 2017 On September 10, 2017 at 4:25 PM, Overstorm said: Ugh... I got the Hide contents f(x,y) = A * 2^(x+y-2) for y=1 A=1 but I haven't figured out what A is yet. Is what I got so far correct at least? I've made some progress with y=2 but not much more. The function is f(x, y) = xf(x+1, y-1) + 2yf(x-1,y) 0 Quote Link to comment Share on other sites More sharing options...
Oversleep Posted September 12, 2017 Report Share Posted September 12, 2017 11 minutes ago, Silverblade5 said: The function is f(x, y) = xf(x+1, y-1) + 2yf(x-1,y) I would never solve that. I would never think that way. 0 Quote Link to comment Share on other sites More sharing options...
Caesura Posted September 13, 2017 Report Share Posted September 13, 2017 A whole thread on maths and science? I'm getting excited! I'm doing 2nd year chemistry and psyc at university (I'll fight anyone who says psyc isn't a real science) 0 Quote Link to comment Share on other sites More sharing options...
Hood Posted September 15, 2017 Report Share Posted September 15, 2017 Psych IS a real science, but in many cases it is not good at replicating some erstwhile important results. I used to see chemists as ordinary scientists. But after watching The Periodic Videos Channel, I've got a paradigm shift. Now they are more like detonation experts in white suits and crazy hairstyles. 0 Quote Link to comment Share on other sites More sharing options...
Caesura Posted September 15, 2017 Report Share Posted September 15, 2017 You know it!! Nah, they don't let us play with the good stuff yet, so if we make stuff go bang we're probably doing it wrong. We do manage to get our hands on dry ice to make bottle rockets every now and then though Psyc is a bit of an odd one at the best of times, but I've just spent the last few days wading through neuroscience articles for research, so I'm feeling the science. 0 Quote Link to comment Share on other sites More sharing options...
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