M**1
发帖数: 162 | 1 Which one is Chromatin? Is there difference in chemical composition? |
|
n*******r
发帖数: 60 | 2 Could somebody kidly tell me what is the difference between takeover,
acquisition, and buyout? Thanks very much! < |
|
y***n
发帖数: 1594 | 3 Are the essay topics same for the same school for different years?
Thanks, |
|
t******d
发帖数: 376 | 4 Just discuss the focus in different area as far as I know, welcome to
provide anything that you know.
In New England/New York Area, due to limited spaces in those old towns, lots
of tunnels/bridges.
In Central West (CO, NM...) mining industry provides many works for civil/
geotechnical engineers
In West (CA), earthquake related work.
In South (TX), petro/offshore related work. |
|
R**********n
发帖数: 1109 | 5 Dear Friends:
Sorry I can not input Chinese from this computer. My boss gave me half of a
day to do some research and tell him what is the difference between column
and wall (I think he meant shear wall, not retaining wall). He ask me to
research it from structural engineering view instead of geometrical view.
What come to my mind is: column mainly support axial compression force and
governed by compression; shear wall mainly support lateral force and
governed by shear.
Could you give me some su |
|
d****i
发帖数: 360 | 6 建了一个模型，要用finite devided difference method 来解出来。有没有人给建议本
好的参考书？THANKS A LOT！ |
|
r****y
发帖数: 1437 | 7 For same-order schemes of finite difference and finite volume,
which one is more numerically diffusive?
Thanks in advance. |
|
s***t
发帖数: 195 | 8
i knew this. but i don't know too much about finite difference. so pardon
my ignorance. this is kind of an interview question.
then what's special about "parabolic" and "explicit"? |
|
l***o
发帖数: 390 | 9 what is the difference between the two? Which library to link if I want to
compile MPI programs? |
|
n****e
发帖数: 135 | 10 Nice Job!!!
The problem you raised is different from which I gave. However, it's very
interesting.
I just had a brainstorming, might not be correct.
If the regular gas price was keeping rising, then the X axis can be
substituted by time. This will make things easier.
1). Before the $1.30 time point, the price rising was dominantely driven by
demand side, especially premium gas demand. During this time, the interest
rate is low, new car purchase increases, the price of all gases increases,
lots o |
|
t*****e
发帖数: 224 | 11 wow, pretty wild, applaud on your imagination!
since our interest is on the putative dependence of price difference on
average price, there is no need to keep track of the time. if one is more
comfortable working with time series data, he can just first sort the data. :)
regular
the
price
consumers'
regular |
|
n****e
发帖数: 135 | 12 Would you plot average gas price vs. time (by month) for me? Thanks.
Suppose average gas price is correlated to time, it can be expressed as a
function of time. I need to know if my assumption is correct, please give it a
try or let me know the data source so I can do it by myself.
Yes, we can assume a dependence of price difference on average price.
Unfortunately, time may be a confounding effector of average gas price, only
after we take out this effect, we can make the assumption. So, please |
|
e********I
发帖数: 693 | 13 ☆─────────────────────────────────────☆
marsala (marsala) 于 (Thu Jul 12 18:13:45 2007) 提到:
My under major is Economics focusing on Finance,and want to apply a PHD
program in either Economics or Finance,but I am not quite clear about the
difference between their research path, and even career path after
graduation.Can someone help me out? Big Bow~~~~ Big Thanks~~~~
☆─────────────────────────────────────☆
UnameMe (家里蹲-扫地僧-树上男爵) 于 (Thu Jul 12 23:34:24 2007) 提到:
从研究讲，去哪个系没有本质区别，关键是你的导师要有能力 |
|
b********6
发帖数: 295 | 14 A friend got an offer phd in economics(finance area). is there any
difference from phd in finance?I mean job
market. |
|
c*******7
发帖数: 1 | 15 I read a lot articles here and got so much valuable informations. Thank you
guys.I am on my way to achieve M.ed in Esl or bilingual education.cause i am
new here,I don't know much about the difference of them. So thanks for help |
|
d********g
发帖数: 2 | 16 假设我有impulse response, 想做curve fitting，求出difference equation, 有办法
吗?
多谢。 |
|
l*****n
发帖数: 1679 | 17 how the total energies for the different crystal structures are evaluated(A3C60,A6C60,A4C60)? |
|
|
m*******s
发帖数: 22 | 19 I have a rainfall map and a NDVI map of US.
Now, I want to overlay the rainfall map on the NDVI map
so that I could identify the change of the rainfall
distribution with different types of vegetation.
In other words, I want the rainfall map to be
semi-transparency so that I could see through it
to reach the NDVI map under it. Now, the problem is
that I cannot see the NDVI distribution any more
after I put the rainfall map over it. Could anyone give me
some suggestions about how do this? Thanks a |
|
r****y
发帖数: 1437 | 20 You use matlab?
If so, it's easy.
In matlab, even you draw a 2-D plot, it's actually a 3-D plot.
You played with the handle, set its z=different values. For your case,
set NDVI map with z = -10, and rainfall map with z= 0 will do it. |
|
m*******s
发帖数: 22 | 21 Thank you for your suggestions.
I use matlab. So, I guess your idea actually is to display these two maps
at a different position along the vertical axis of z, just like that
shown in the attached figure(Suppose the top image is the rainfall
map, while the bottom is the NDVI map), right? |
|
d****i
发帖数: 360 | 22 建了一个模型，要用finite devided difference method 来解出来。有没有人给建议本
好的参考书？THANKS A LOT！ |
|
a***n
发帖数: 578 | 23 【 以下文字转载自 Physics 讨论区,原文如下 】
发信人: argon (哼,看怎样整你), 信区: Physics
标 题: how to measure the ratio of different
发信站: Unknown Space - 未名空间 (Thu Mar 10 16:51:14 2005) WWW-POST
surface orientation of a Nanoparticle?
By XRD? thanks. |
|
a***n
发帖数: 202 | 24 how to solve the difference equation:
X(t+1)=aX(t)-bX(t)^2, where a and b are positive.
How to get the steady state and the time path?
3x! |
|
d*********g
发帖数: 49 | 25 做随即控制问题做到一个高维的两次parabolic type PDE,想要用有限差分做一个
数值解试试。现在两次导数前面的系数有state variable, 符号不定，导致
一般做法下得到的finite difference scheme没有单调性。不知道这种
情况是不是还有希望，请教熟悉的同学推荐一些书或者论文。 |
|
m****n
发帖数: 45 | 26
What is "monotonicity" for a finite difference scheme? |
|
c*******e
发帖数: 8624 | 27 你把问题贴出来吧,包括bc,
finite difference和finite element两回事
fe里面的数学背景要高一个数量级 |
|
w**d
发帖数: 2334 | 28 It is very tricky for Chebyshev collocation, because the weight function.
You can check David Gottlieb's work. He did some work about 20 years ago.
It surely has the issue of stability, no matter it is onestep or multistep.
For finite difference, if the problem is periodic, you can use Von Neumann
stability analysis; if the problem is IBVP, things become much more
complicated, but we still have general ways to check the stability of the
boundary conditions (which is essentially due to the fact |
|
c****n
发帖数: 2031 | 29 It surely has the issue of stability, no matter it is onestep or multistep.
For finite difference, if the problem is periodic, you can use Von Neumann
stability analysis; if the problem is IBVP, things become much more
complicated, but we still have general ways to check the stability of the
boundary conditions (which is essentially due to the fact that the
corresponding discrete linear operator is diagonalizable, e.g. by Fourier-
Laplace transform). What I'd like to know is that for Chebychev s |
|
c*******e
发帖数: 8624 | 30 你把问题贴出来吧,包括bc,
finite difference和finite element两回事
fe里面的数学背景要高一个数量级 |
|
g******a
发帖数: 69 | 31 This is not the point.
The problem is convergence or stability...
Also, finite difference solution is linear in each intervals???
You must mess it up with FEM. |
|
c****n
发帖数: 2031 | 32 It surely has the issue of stability, no matter it is onestep or multistep.
For finite difference, if the problem is periodic, you can use Von Neumann
stability analysis; if the problem is IBVP, things become much more
complicated, but we still have general ways to check the stability of the
boundary conditions (which is essentially due to the fact that the
corresponding discrete linear operator is diagonalizable, e.g. by Fourier-
Laplace transform). What I'd like to know is that for Chebychev s |
|
w**d
发帖数: 2334 | 33 It will be very beneficial to read some book.
For time dependent problem, the definition of stability
should be the same for whatever schemes. It basically means
the energy is bounded.
Assume the final time is T, the time step dt = T/N.
Let u_n be numerical solu at t=t_n. For finite difference/element,
u_n is mostly piecewise polynomials, not necessary linear.
For spectral methods, u_n will be a global polynomial.
Just like for u, we can define some norm(energy) for u_n. Then
the stability means |
|
w**d
发帖数: 2334 | 34 It is very tricky for Chebyshev collocation, because the weight function.
You can check David Gottlieb's work. He did some work about 20 years ago.
It surely has the issue of stability, no matter it is onestep or multistep.
For finite difference, if the problem is periodic, you can use Von Neumann
stability analysis; if the problem is IBVP, things become much more
complicated, but we still have general ways to check the stability of the
boundary conditions (which is essentially due to the fact |
|
g**********4
发帖数: 14 | 35 I have heard that people mentioned that not apply two different programs (
like path and IM or psychiatric and IM) for same university or hospital. I
am wondering is it should be absolutely avoided or is it OK? |
|
w*****a
发帖数: 24 | 36 Chances are that you are screwed if PDs from different programs exchange
information... |
|
b***u
发帖数: 746 | 37 don't waste you time waiting or counting for your IV. Schedule Step3 and pass it ASAP. I mean pass,
not good score. Step3 score doesn't matter that much as 1 or 2. Get it done
before interview, you will see the difference.
FYI. you can schedule it once you got your certificate. Connecticut is the
state that requires no PGY to take Step 3 as I remember. |
|
d****2
发帖数: 118 | 38 Do you mean that it will make a difference for all applicants whatever visa
is needed or not?
Thanks! |
|
s*******i
发帖数: 44 | 39 what is the difference between confounding bias and effect modification?
thanks! |
|
s****d
发帖数: 69 | 40 正在报名住院医的学科，发现internal medicine/family practice。 请前辈们解答一
下！
1。What is the difference between internal medicine/family practice and
family medicine?具体做什么，看得病人有何不同，fellowship,申请医院的容易程度
都有什么不同？
2。internal medicine/family practice的就业前景和收入与internal medicine，
family medicine的医生比较如何？ |
|
l**n
发帖数: 1861 | 41 Thanks.
I have a paper. I don't know which journal is better for this paper.
Who can tell me the difference between them? which is better? |
|
t***m
发帖数: 13 | 42 what's the difference between physical therapist and occupational therapist?
Thanks. |
|
T*R
发帖数: 36302 | 43 Totally different.
卫生兵is soldier, and if you are BSN and go to Army Nurse Corp, you are army
officer.
What Lucky9 said is not army nurse. |
|
c*******n
发帖数: 1214 | 44 I do not have a Sanford in hands now. Could anyone help to see if there are
any spectrum coverage difference among Cipro, Avelox, and Levaquin? Thanks a
lot! |
|
u*****d
发帖数: 1009 | 45 Ciprofloxacin doesn't have gram postive coverage, like MSSA, MRSA, PSSP,
PRSP, group strep, enterococci and viridans strep, while levofloxacin and
moxifloxacin have coverage in those areas.
The only major difference between levofloxacin and moxifloxacin that i can
think of is moxi has some BDA (below the diaphragm) coverage while levo
doesn't. One last thing, levo covers p. aeruginosa, n. gono, and n. mening
but moxi doesn't.
Hope this helps.
are
a |
|
l*****n
发帖数: 1679 | 46 how the total energies for the different crystal structures are evaluated? |
|
T*********r
发帖数: 11175 | 47 没看懂问题
你不是都说了一个是vector一个是pseduoscalar了吗
那difference当然就是spin不一样呗。。。。
到底是要问什么？ |
|
j****e
发帖数: 245 | 48 【 以下文字转载自 PsychoAnalysis 讨论区,原文如下 】
发信人: JGrace (奕儿), 信区: PsychoAnalysis
标 题: Re: 请教the difference
发信站: Unknown Space - 未名空间 (Tue Nov 2 17:20:42 2004) WWW-POST
Obsession generally refers to irrational, intrusive thoughts, while compulsion
irrational, uncontrollable behavior.
Below is more information about OCPD (Obsessive-Compulsive Personality
Disorder) and OCD (Obsessive-Compulsive Disorder)
OCPD - Obsessive-Compulsive Personality Disorder
Diagnosis Criteria
http://www.mentalhealth.com/dis1/ |
|
r******s
发帖数: 2155 | 49 Harvard Chief Defends His Talk on Women
January 18, 2005
By SAM DILLON
The president of Harvard University, Lawrence H. Summers,
who offended some women at an academic conference last week
by suggesting that innate differences in sex may explain
why fewer women succeed in science and math careers, stood
by his comments yesterday but said he regretted if they
were misunderstood.
"I'm sorry for any misunderstanding but believe that
raising questions, discussing multiple factors that may
explain a |
|
r*****t
发帖数: 286 | 50 ☆─────────────────────────────────────☆
Shinew (小牛) 于 (Fri Mar 23 15:22:40 2007) 提到:
I applied intern positions for two different divisions at an IB. Already got
an offer from one division, but I really like the position at the other
division and that's actually my first option in my application. Now the
second division contacted me and asked that if I am still interested. What
shall I tell them?
I was planning to tell them that I already got an offer from the other
division but I am stil |
|
