Hi everyone
I am finishing the last problem for a DSP problem set and just frankly have no idea where to start this one. I'm thinking I could compute the magnitude of each filter and then compare, but again am not sure. Can anyone point me in the right direction?
Thanks
Summary:: I'm about to take my first course in DSP. It is a one term graduate course using the 4th edition of Proakis.
I'm about to take my first course in DSP. It is a one term graduate EE course using the 4th edition of Proakis. Does anyone with experience in this have useful advice for such...
My school does not require any such thing. The course requirements are actually quite small, and there is a much larger emphasis on publication and attracting funding.
My school is in Canada and it is CAMPEP accredited. I should mention that I am actually not interested in pursuing a clinical physics residency, but am attempting an MD-PhD program, and I intend to work in the public healthcare system.
I am aware that the nucmed scene is small, but that there...
Hey all
I'm finishing up my master's degree in medical physics this year, specifically working in PET-MR data analysis. I have a definite professional interest in medical imaging, and am planning on pursuing this. I have an interesting choice where I've been offered a position as a PhD student...
Thank you very much Choppy. So from what I'm hearing, as far as my particular position goes, the different titles are largely equivalent. Especially if I have an MSc in medical physics?
I have two paths I can take in my graduate studies. I'm currently an MSc student studying hybrid PET-MR systems in a medical physics program. My advisor is adjunct to the department of biomedical engineering, as well as the medical physics department. We were discussing doctoral work and it came...
I am unsure *how* to do this integrla with the incomplete gamma function. My thought hit a dead-end at
$$ z_{can} = \int_0^\infty \theta(E-\Delta)\left(\frac{1}{\Delta}\right)\left(\frac{E}{N\Delta}\right)^N exp[-\beta E] dE $$
$$ z_{can} = \int_\Delta^\infty...
I'm given the following density of states
$$ \Omega(E) = \delta(E) + N\delta(E-\Delta) + \theta(E-\Delta)\left(\frac{1}{\Delta}\right)\left(\frac{E}{N\Delta}\right)^N $$
where $ \Delta $ is a positive constant. From here I have to "calculate the canonical partition function as a function of $$...
So for the 1D infinite well with the states above, I have
## \psi_{symmetric} = \frac{2}{L} [sin[\frac{\pi x_1}{L}]sin[\frac{2\pi x_2}{L}] + sin[\frac{2\pi x_1}{L}]sin[\frac{\pi x_2}{L}]] ##
## \psi_{antisymmetric} = \frac{2}{L} [sin[\frac{\pi x_1}{L}]sin[\frac{2\pi x_2}{L}] - sin[\frac{2\pi...
I checked out Franklin's book on Scribd and it looks very solid. Thank you. I thought it funny that the cover, font, typesetting, tone, and contents all remind me of Griffiths.
So this coming semester I'm taking my first courses in graduate level EM and statmech using Jackson and Pathria. My first term was softer academically, so I've taken the time to review certain mathematical subjects - vector calculus, DEs, and linear algebra. Does anyone have any particular...
If anyone could help me understand how Peebles gets from line one of the autocorrelation to the second line, I'd be most grateful. I don't understand what identity or property is being used to go from a product in the expectation value to a sum in the expectation value.
Thank you all for the wonderful replies.
I will specify my question further. I am reading Easton's "Fourier Methods in Imaging" and on page 479 I have the following statement that I am having a hard time visualizing.
"...I'd the spatial frequency of the cosine is infinitesimally smaller than...
What does the reconstructed wave look like if we sample the input an infinitesimal amount under the Nyquist limit? I can intuitively picture how we can (ideally) reconstruct an input sampled at the Nyquist limit (and appropriate phase) because we are able able to get the extreme values of the...
I'm trying to solve the vector potential of a solid rotating sphere with a constant charge density. I'm at a point where I'm performing the final integral that looks like
$$ -\left( \frac {\mu_0 i} {3} \right) \sqrt{\frac 3 {2\pi}} \frac {q\omega}{R^3} Y_{1,1} \int_0^R (r')^3 \frac {r_<}...
I feel as though you are completely neglecting the actual purpose of this post. Regardless of how you feel my problem is stated, you are pedantically distracting attention away from the actual question.
But yes, you are right in your assumptions.
Rudeman all the information is present in the problem statement, and the use of arbitrary points to determine a potential difference is acceptable with infinite cylinders since the potential does not behave at zero or infinity.
So I'm trying to solve for the field and potential inside and outside of an infinite cylinder with uniform charge to length density.
Using Gauss' law I am able to do this very easily and get the answers.
## V = \left(\frac {-\lambda} {2\pi\epsilon} \right) \ln\left(\frac b a \right)## for...
So I got an assignment returned to me with fewer marks than I had expected. One part in particular is confusing to me. The professor is only available on Monday for a tutorial, but I'd like to see what is wrong before then.
Can anyone spot why this is incorrect?
I found out what is going on. Turns out that since tri(x,y) => tri(x) * tri(y) the equation is separable and can be written as two 1d convolutions like
(f(x) ** h(x)) * (f(y) ** h(y))
I have some confusion about this question.
I am asked to do the 1D convolution of a function that is clearly 2-dimensional
tri(x,y) ** (step(x) * 1(y)) where ** is the convolution.
Furthermore my professor is not available for questions (have tried). I'm wondering if I simply ignore the bits...
I can't for whatever reason figure out where the sin(theta) term is coming from in the attached picture of page 306 of Griffiths' 4th edition EM text. The paragraph says it comes from the dot product, but I just don't see where it's coming from.
So I'm on page 67 of Marion/Thornton's "Classical Dynamics of Particles and Systems" and I'm in need of some help. I understand that so far there's is an equation that cannot be solved analytically (regarding motion due to the air resistance and finding the range of the an object shot from a...
Here is my image of the integral I've computed. Barring an extra parentheses I've clearly dropped by accident at the end, I am trying to run it from sqrt(1/2) to 1. Looking at the graph above provided by vela (thank you) I see where everything intercepts, but I do not understand why the given...
So I can push this integral all the way to the end and see I get a negative volume.
I solve for the intercepts of the cone and sphere at r^2 = 1/2. Seeing this cone is inside the sphere and the sphere is around it, I figure I should integrate from sqrt(1/2) to 1 since we're dealing with a unit...
In my own country I can suggest the follow thoughts.
1. Raising the bar for teachers
Entrance requirements for teacher's colleges should include *actual teaching experience* - camp counselling, coaching, babysitting, mentoring, being a lab assistant or teaching assistant, outreach volunteer...
As someone who has spent the last four years teaching at a private elementary school...
The major difficulty facing elementary teachers, and specifically those who teach the lower grade levels, is that you are often working with developing a person rather than a student. Many first graders come...
I haven't read much apart from what's happened inside the lab I'll be working at. Do you know the journals of the field? That's be helpful information.
I did find a paper on hyper-polarisation for increasing resolution to be pretty fascinating. Some complicated process involving the surface of...
It's looking like I'm going to get funding for a research MSc in medical physics, working specifically with MRI technology on in-vitro rat brains looking at models of diagnosing disorders of the nervous system. I was just wondering if anyone had any useful advise or guidance for some things to...
I also graduated with very little prospects and two degrees (one in physics and the other in music). I tried to stick it out and even moved to another city where I eventually found employment using my music degree at a preschool. My wife and I are not above poor, but we always have enough for...
I think most people use Griffiths book because it is "simple" and "conversational" and doesn't put too much work into prerequisites. I found this a bloody disaster and my confusion was immediately cleared-up when I switched to Zettili.