d**o
发帖数: 79 | 1 1.G. F. Homicz and J. A. Lordi, ''A note on the radiative directivity
patterns
of duct acoustic modes,'' Journal of Sound and Vibration. 41, 283-290 1975
2.Y. ANDO. On the sound radiation from semi-infinite circular pipe of
certain wall thickness. Acustica, 1969. 22: p. 219-225.
3.M. Bernard and B. Denardo. Re-computation of ando's approximation of the
end correction for a radiating semi-infinite circular pipe. Acustica, 1996.
82(4): p. 670-671.
非常感谢！ 我邮箱：d****[email protected] |
|
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j********2
发帖数: 4438 | 3 推荐ZFS下用RAIDZ，相当于RADI-5，不需要硬RAID，重装系统之后都能自动导入volumn |
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o****i
发帖数: 1706 | 4 作业，里面有一个要求父类实例调用子类的方法..call a Cylinder method on a
Circle，不知道怎么搞，代码如下，谢谢大家..：
import java.text.*;
public class Circle {
DecimalFormat format=new DecimalFormat("#,###.00");
final double PI=3.1415926536;
double radius=0;
public Circle(){
radius=0;
}
public Circle(double r){
radius=r;
}
public void setRadius(double r){
radius=r;
}
public double getRadius(){
return radius;
}
public String toString(){
return "Radi |
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y****i
发帖数: 1504 | 9 没看懂为啥radiative decay一定上升，这个是自发辐射项。 |
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C********5
发帖数: 194 | 10 which book said it? Non-radiative decay should contain a lot of processes.
Maybe the book meant one of them, e.g., internal conversion, is inversely
proportional to the energy gap. |
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C********5
发帖数: 194 | 11 To be strict, the radiative decay rate is only relevant to the transition
dipole integration. However, the large pi-system, the lower energy gap, and
also larger molecular orbital overlap thus larger transition dipole
integration.
These should be on books about molecular spectroscopy. |
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r****y
发帖数: 1437 | 12 hehe, are you studying radiative transfer or spectroscopy?
cm^{-1} for wavenumber
\mum for micron
个 |
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发帖数: 1 | 13 https://aeesp.org/jobs/2203
Job Type:
Graduate
.
Job Rank:
PhD student
.
Job Institution:
University of Calgary
.
Job Description:
Dr. Ke Du from University of Calgary is seeking for a motivated Ph.D.
student in the area of air quality science and engineering for Fall 2017or
Winter 2018 enrollment. The successful candidate will be nominated to
receive the prestigious “Eyes High” scholarship http://grad.ucalgary.ca/faculty/eyeshigh. To be eligible for this award, you must (1) Have MSc degree in... 阅读全帖 |
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O*********r
发帖数: 1835 | 14 JIM HANSEN的CAREER是很有趣的，他的早年做了很多RADIATIVE TRANSFER方面的东西，
又精致又实用。70年代初，JIM兴趣开始转变，DEVELOP起 GCM。首先雇了老同学ANDY
LACIS来掌管RADIATION。LACIS是他们IOWA帮的，就是卢刚那个系(幸好先走掉了)。
然后再找了隔壁邻居COLUMBIA的两个DYNAMICISTS，即DAVE RIND和GARY RUSSEL，
来写GCM 的DYNAMICAL CORE。82年左右，NASA/GISS发生“政变”，JIM执掌大权。
84年，JIM领衔发表了GISS GCM的JGR PAPER，从此走上GLOBAL MODELING的不归路。
现在大多数人讲到HANSEN，一定会说“GLOBAL WARMING HANSE”。难得ALLIGATOR还
记得这些旧事，JIM知道了一定很欣慰。 |
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r****y
发帖数: 1437 | 15 e.g., in real radiative tranfer, you want to describe
lines as many as you can, as detailed as you can. you want to
specify variables at as many atmospheric layers as you can afford.
A toy model, you only have one or two lines, you only have a
very limited representation of atmospheric profiles, say 3-10 layers of
atmosphere. No fancy scattering, just two streams.
If something cannot make sense from a toy model, the chance to get
it from complicated model is little. |
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d**o
发帖数: 79 | 16 1.G. F. Homicz and J. A. Lordi, ''A note on the radiative directivity
patterns
of duct acoustic modes,'' Journal of Sound and Vibration. 41, 283-290 1975
2.Y. ANDO. On the sound radiation from semi-infinite circular pipe of
certain wall thickness. Acustica, 1969. 22: p. 219-225.
3.M. Bernard and B. Denardo. Re-computation of ando's approximation of the
end correction for a radiating semi-infinite circular pipe. Acustica, 1996.
82(4): p. 670-671.
万分感谢！ 我邮箱：d****[email protected] |
|
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w******8
发帖数: 7 | 18 羡慕楼主MM match 到了radi onc |
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k*******0
发帖数: 355 | 19 Just surgery, not radi onc, hehe.
And 30+, may be 楼主JJ ^-^ |
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A***g
发帖数: 1816 | 20 放射科的确很不错，不过大家可能想象不到，十几二十年前放射科毕业的曾经找不到工
作，逼得回去再念内科。
五六年前，放射科也曾经大大地心惊了一把，因为保险公司和一些医疗机构号称要外包
读片到印度去。当然，后来没成。
总体而言，radi很不错。那些担心什么辐射的，根本是瞎担心。在美国这里的放射科医
生都不需要直接自己动手的。 |
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A***g
发帖数: 1816 | 21 放射科的确很不错，不过大家可能想象不到，十几二十年前放射科毕业的曾经找不到工
作，逼得回去再念内科。
五六年前，放射科也曾经大大地心惊了一把，因为保险公司和一些医疗机构号称要外包
读片到印度去。当然，后来没成。
总体而言，radi很不错。那些担心什么辐射的，根本是瞎担心。在美国这里的放射科医
生都不需要直接自己动手的。 |
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h***y
发帖数: 834 | 22 ☆─────────────────────────────────────☆
kindregard (none) 于 (Thu May 19 12:40:46 2011, 美东) 提到:
在美国，Radiology应该算是个挺热门的专业吧，life style好，pay的高。虽然近年来
受经济的影响，job market有下降的趋势，但如果不挑地方，还是不太难找的——认识
一个土耳其医生，考过board之后，在Ohio找到一份工作，年薪37.5万，没有call，每
年一个月的假期。Private practice和Interventional radiologist还会高些......
这些优点，也导致了大量优秀AMG涌入这个专业，使得IMG很难申请Radiology的住院医
位置。曾经看到过一所大学医院的ranking list，很多AMG candidate是名校毕业、
double 99，有research experience，有paper，整个package很强。
与此同时，还有另外一个有趣的现象：做这个专业的印度人、土耳其人从来就没少过，
住院医、fellow，... 阅读全帖 |
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m**********e
发帖数: 80 | 23 主要是希望能从未来职业发展前景上听听有经验也见多识广的前辈们的意见。请不吝赐
教。 |
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w******e
发帖数: 285 | 24 阅读能力差的表示没看懂是你申请，还是你老公申请。。。。 申请人是AMG, 还是IMG
。。。 |
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w**h
发帖数: 62 | 25 其实这个科他叫做radonc
或者叫radiation oncology. 你老公想申什么他应该有数吧，如果他是在这里毕业的
amg的话。 |
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t***5
发帖数: 1057 | 27 如果你老公自身条件很强，能拿到Radiation Oncology的位置，这是首选。每年只培养
一百多，绝大多数不做fellowship都能找到工作。
Radiology每年培养一千多一点，这几年就业形势不乐观。绝大多数都需要做1-2年
fellowship。现在热门是Interventional Radiology，很多人竞争。最大问题是在大中
城市和好地方比较难找到工作。 |
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D*********r
发帖数: 371 | 28 radonc不容易申请，但也不是不可能的，要早下手，需要的条件包括：step 1>avg (
240+ or 245+), class rank ideally 1st 25%, at least top half (which implies
that 3rd yr as many honors as possible) etc. AOA helps, and research and
connection with home dept. definitely helps a ton! radonc对科研可能是所有科
室里最高的，而且md/phd比例也最高。
你老公的兴趣到底是啥？rad/radonc说实话差别很大，radonc life style和收入都没
得说，你愿不愿意每天面对癌症病人？rad还是以看片做诊断为主，哪怕是private得IR
，都要做一些诊断的工作，这个是要干20-30年的营生，他自己的兴趣很重要？他是第
几年得？申请radonc要早点动手去建立关系
oncology |
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D*********r
发帖数: 371 | 29 这不会是坑吧，他们学校没有advisor吗？以前没有人申请吗？呵呵，本校没有program
确实有些影响，估计得做3-4个away rotation而且一定要拿到很好的信，第四年这几个
月很关键了。他有没有做一些相关的研究？任何研究？
我在读研究生的时候碰到过一个penn毕业的哥们专门做了一年的研究来增强自己的申请
到radonc，许多申请皮科、整形、radonc得人选择这条路来增强自己，但是首先它们实
力都很强，我知道的好几个都是aoa，不过只要争取肯定会有收获。
oncology |
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m**********e
发帖数: 80 | 30 不是坑，是我比较反对他申这个，觉得风险太大，申radiology他就没啥风险，而且上
很好program的可能性非常大。我实在不放心来这里听听前辈们意见。看起来他有他的
道理。多谢了！
program |
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D*********r
发帖数: 371 | 31 如果硬件条件都够了，真的可以考虑去名校做一年的相关研究，尤其是没有本地的prog
的情况下，这样可以保证很强的信，另外他本人性格如何？如果能很快和人打成一片的
话可以考虑多做几个away然后拿很好的信，他第几年了？最好做一些相关的研究，不需
要一定是radonc的，但是越相关当然越好，而且越好的prog对这个可能越看中，还有就
是没有必要小看所谓“一般的prog”，美国这里训练非常标准化，绝大多数（没有亮红
灯的）prog都能给你很好的训练，进门是最难的一步，加油！ |
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m**********e
发帖数: 80 | 32 马上第三年了。万一落到排名靠后的program也不会影响未来么？不是很善于和人打交
道，人倒是很实在。：）
prog |
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D*********r
发帖数: 371 | 33 ...他的职业目标是啥？private？academia? 去学校当然出身很重要，而且说实话，收
入方面各个科室相差不是很多，而且都比private低不少呵呵，去private往往你的本地
的关系很重要，很多地方都是从本地毕业生招的，对radonc的就业市场不是很了解。
我觉得他需要好好想想自己到底想要啥，自己的长处、短处等等，good luck! |
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D*********r
发帖数: 371 | 34 do not forget to talk to his dean, advisor, etc. sometimes they have the
best insight of what specialty your husband is competitive for and how to
work for it. good luck! |
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d***y
发帖数: 59 | 36 借楼问一下，请问DreamChaser,申请AOA的话要做哪些事情？
看了AOA的网站的要求包括GPA啊，leadership啊。我秋季入学，学校的前两年都是pass
/fail, 那是否leadership或者services,比如去免费诊所工作等等就更重要了？
另外，即使第一第二年是true pass/fail, 你觉得是不是学校里仍然会有一个学生所不
知道的排名或者前25%学生的名单呢？然后这个排名会寄给AOA或者resident program?
implies |
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l********y
发帖数: 53 | 37 每个学校评aoa的条件不一样。
具体你要问自己学校，一般来说是step1，rotation的honor，以及leadership也就是你
说的services。
权重看学校。
顺便，aoa你没法申请，是学校的决定，不存在申请不申请，就跟dean's list一样。
一般1，2年级是true pass/fail就是true pass/fail，aoa不看这个。学校也不会吃撑
了给每个program邮寄排名，学校的目标是把你们每个人都卖出去卖到好地方去，邮寄
排名给自己学生填堵砸自己的牌子。
pass |
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S*M
发帖数: 104 | 38 Hi there,
Sorry for bothering. I have a question about E-beam heating on STM machine.
We currently plan to use E-beam heating at the machine but it seems like the
machine has only radiative heating function. Now we need to modify the
power supply and filament a little bit to realize E-beam heating. The way is
to float the current power supply and bias the filament. Does anyone have
relative experience before? It will be perfect if you also use Omicron's
STM or Delta's power supply. Thanks a lot |
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v*****m
发帖数: 66 | 39 Nanowires seem to be able to solve all kinds of problem. I know lots of
people are working on nanowire solar cells, nanowire LEDS, nanowire FET.....
My question is that:
Is it a really good idea to use nanowire for making semiconductor devices.
Here are my arguments:
1. surface to volume ratio is so damn high for a nanowire.
2. Surface is a 2 dimensional defect, which creates electric field, non-
radiative combanation centers, unwanted energy states, etc. All these are
killers for semicondut |
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S*M
发帖数: 104 | 40 【 以下文字转载自 NanoST 讨论区 】
发信人: STM (STM), 信区: NanoST
标 题: floating power supply
发信站: BBS 未名空间站 (Mon Jul 2 11:05:23 2007)
Hi there,
Sorry for bothering. I have a question about E-beam heating on STM machine.
We currently plan to use E-beam heating at the machine but it seems like the
machine has only radiative heating function. Now we need to modify the
power supply and filament a little bit to realize E-beam heating. The way is
to float the current power supply and bias the filament. Does anyone |
|
a*******r
发帖数: 7558 | 41 那我替朋友贴一个
德国不来梅大学的 懂些radiative transfer基本原理（对物理专业很容易）/c
fortran就可以
pdf附件 |
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s***e
发帖数: 5242 | 42 by Freeman Dyson
12/2010
In 1946 Subrahmanyan Chandrasekhar gave a talk at the University of Chicago
entitled “The Scientist.” 1 He was then 35 years old, less than halfway
through his life and less than a third of the way through his career as a
scientist, but already he wa reflecting deeply on the meaning and purpose of
his work. His talk was one of a series of public lectures organized by
Robert Hutchins, then the chancellor of the university. The list of speakers
is impressive, and included ... 阅读全帖 |
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a*****n
发帖数: 136 | 43 The latest Impact Factor figures for Elsevier's Physics and Astronomy
journals have just been released and highlights include...
Physics Reports-Review Section Of Physics Letters
2009 Impact Factor WAS 17.752
2010 Impact Factor NOW 19.438
Surface Science Reports
2009 Impact Factor WAS 13.462
2010 Impact Factor NOW 18.593
Progress In Surface Science
2009 Impact Factor WAS 7.913
2010 Impact Factor NOW 10.368
Progress In Quantum Electronics
2009 Impact Factor WAS 4.091
2010 Impact Factor NOW 5.250
... 阅读全帖 |
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M*********m
发帖数: 2024 | 44 I think this experimental result is a slap in the face to the MSSM, SUSY, M-
theory, blahblahblah theorists since even the Higgs mechanism is not
understood. MSSM radiative correction for Higgs boson is not valid in the
sub-TeV range. Anyway, we've got too many cheap theorists. |
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l**********n
发帖数: 72 | 45 Elliptic function should be considered as analytic function. It has two
periods, one is real, the other one is complex and they expand a parallelogram
in the complex plane. Generally the notations are sn, cn, tn as similar cases
in trigonometric functions. There are extensive literatures talking about
this, such the books by Watson's "Special functions" or similar books.
As to the problem of the radiation power under lorentz transformation. My
answer is negative. Assuming that n photons are radi |
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i*******n
发帖数: 166 | 46
Radiative Decay is one of the energy sources |
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d**o
发帖数: 79 | 47 1.G. F. Homicz and J. A. Lordi, ''A note on the radiative directivity
patterns
of duct acoustic modes,'' Journal of Sound and Vibration. 41, 283-290 1975
2.Y. ANDO. On the sound radiation from semi-infinite circular pipe of
certain wall thickness. Acustica, 1969. 22: p. 219-225.
3.M. Bernard and B. Denardo. Re-computation of ando's approximation of the
end correction for a radiating semi-infinite circular pipe. Acustica, 1996.
82(4): p. 670-671.
万分感谢！ 我邮箱：d****[email protected] |
|
f*******n
发帖数: 588 | 48 Sociologists in gender and those in family field have a long debate over how
to account for the function of family. Some experts in gender are more radi
cal and maintain we should give up the social institution of family as a sor
t of male domination on women. However, many students of family field hold a
conservative attitude and indicate that family benefit women a lot. How do
u think of this debate? Can u identify some common weaknesses of both perspe
ctives and how can u improve them? |
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P*****r
发帖数: 1308 | 49 去试开了一下这个车子，感觉不出来大毛病。加速爽，刹车换档啥的都还算smooth。车
子外观无大碍，左后bumper有几道浅刮痕。各个电子部件都work。排气管没什么积碳，
踩油门尾气也没什么特殊。
不好的地方：
1. 车子确实开得很少，这也是为什么才7.5k里程。车主有四辆车，这辆车都没地方停，
就露天停在公共地方，风吹日晒的。
2. 车主没留什么service records，看样子不是很爱惜这个车，整了半天我就开见两张
收据，一张是换了两根accessory belt，一张是换油。
3. 车子应该有段时间没换油了，stick抽出来是浅棕色的。车主却说最近换那两根belt
的时候换过油。
4. 车主说去过dealership两次，一次是换了radio unit因为好像display不能显示radi
o台名（说是和别的车比较了一下，发现有这个问题），换了两次但是其实问题好像还在
。不过radio和climate control都正常工作。另外一次是说自动车窗每到春天就出毛病
，roll up到顶后老是会drop back 一小段，去dealer那搞了好几次，每次都是次年春就
出毛病。说... 阅读全帖 |
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