|
A***l
发帖数: 302 | 2 The principle of vaccine is based on two key elements of adaptive immunity,
namely specificity and memory(1,2,3).
Memory cells allow the immune system to mount to a much stronger response on
a second encounter with antigen. This secondary response is both faster
to appear and more effective than the primary response. The aim of the
vaccine is to alter a pathogen or its toxins in such a way that they
become innocuous without losing antigenicity. This is possible because
both B cells and T cells |
|
M******7
发帖数: 2904 | 3 principle 和 principal
这两个单词的区别。
大家说说。
俺是今天才发现，其实是两个不同的词。土。 |
|
M******7
发帖数: 2904 | 4 Should it be
"The principle ingredients of love are..."
or
"The principal ingredients of love are..."
You can either answer the question,or complete the sentence. Hoho. |
|
C****e
发帖数: 12294 | 5 女儿说：
Anyway, a princiPAL is someone who works at a school. A princiPLE is an idea
or notion. The first is a person, the second is an abstract noun.
这不和字典说的一样吗？还用着着她说吗？可气。 |
|
M******7
发帖数: 2904 | 6 还有一个区别就是：
Principal can also be an adjective.
Principle can only be a noun.
字典在手的时候，俺是明白的。字典一关上，俺就糊涂了。
就像这几个词：
flammable
inflammable
nonflammable
第二个词，好多老美都搞错意思。
所以，the Simpson里有一集就拿这个词开涮。
当然，凡是上过新东方GRE的xdjm，都应该不会搞错（如果记忆力冇丧失的话）
idea |
|
M******7
发帖数: 2904 | 7 这就是俺犯的错误
俺写成了 The principle ingredients of ... |
|
u****u
发帖数: 229 | 8 【 以下文字转载自 JobHunting 讨论区 】
发信人: uuiiuu (无), 信区: JobHunting
标 题: Job opportunity for Principle Software Engineer
发信站: BBS 未名空间站 (Wed Jul 1 16:02:39 2009, 美东)
This full-time job is with a world class, reputed company in the medical
device/pharmaceutical industry in the Chicago area. The employer is
looking for experienced Software Engineers to design, develop and test
software for medical devices. Required skills include C/C++, C#, .Net, Java,
XML, database design in SQL, and experience in ful |
|
w****g
发帖数: 44 | 9 Any body here developed the program for first-principles calculations ?
Such as DFT, HF ?
How are those programming compared to MD ? any books/other materials to
start with ?
Thanks |
|
k**********g
发帖数: 989 | 10
不是拆解，而是让对象按照其特性实现多於一个介面。
For example, if there is a Writeable and Readable interface, then each
implementation X can choose from these combinations:
(1) X implements Writeable
(2) X implements Readable
(3) X implements Writeable, Readable
The main difficulty solved by this design pattern:
In some standard library designs, Writeable must imply Readable, because the
designer has chosen to make Writeable inherit from Readable. This
assumption may fail for some use-cases, for which the standard lib... 阅读全帖 |
|
N*****8
发帖数: 253 | 11 【 以下文字转载自 DataSciences 讨论区 】
发信人: Nicam08 (Nicam), 信区: DataSciences
标 题: 求Big Data Principles and best practices of scalable realtime data systems MEAP电子版
发信站: BBS 未名空间站 (Thu Oct 30 13:05:58 2014, 美东)
请问各位朋友，如果谁有的话能发一份给我吗？十分感谢。
[email protected]
(function(){try{var s,a,i,j,r,c,l,b=document.getElementsByTagName("script");l=b[b.length-1].previousSibling;a=l.getAttribute('data-cfemail');if(a){s='';r=parseInt(a.substr(0,2),16);for(j=2;a.length-j;j+=2){c=parseInt(a.substr(j,2),16)^r;s+=String.fromCh... 阅读全帖 |
|
t**r
发帖数: 3428 | 12 Big Data: Principles and best practices of scalable realtime |
|
T****2
发帖数: 82 | 13 normally we are talking whether the accounting policy is in consistent or
not in one accounting period, it could be same with fiscal year or different
, this accounting period is generally refer to one year instead of one month
.If every year ur company choose to make provision on matching principle in
year ending, that could be fine, of course, if u do every month same way,
could be best. but i don't think it's a trouble either for external audit
and tax audit. that's my opinion, if i m wrong, |
|
y*******3
发帖数: 659 | 14 I got the reply from the cpa today as follows:
"The date that goods or services are accepted is the most appropriate date
for recording the expense and subsequent liability to the vendor, not the
date of the invoice or statement (we discussed this in reference to
developing a “receiver” system).
Your desire to match revenue and expense is correct. This would not
constitute a change of accounting principle just an increase in accuracy.
As I said in our discussion of a receiver system, dating th |
|
n*****t
发帖数: 231 | 15 卖电子版的course smart ebook subscription.只要$30。我一个月前买的，花了75
136-day subscription of (Coursesmart)从今天开始还有136天可以看和打印
Principles of Taxation for Business and Investment Planning,
2011 Edition
Publisher: McGraw-Hill/Irwin; 14 edition (April 13, 2010)
ISBN-10: 0078136687
ISBN-13: 978-0078136689
I paid $75 for the subscription. There is 136 days subscription left.
ONCE YOU PURCHASE THIS eBOOK A LINK & PASSWORD WILL BE SENT TO YOU VIA
E-MAIL.
THE eBOOK is accessible for both Mac and Windows users.
CONTAINS |
|
C*********2
发帖数: 76 | 16 请问大家：在哪里可以下载：生物化学课本 Lehninger Principles of biochemistry
5th 中文翻译版？
非常感谢！！ |
|
G***G
发帖数: 16778 | 17 any article about sequencing principle?
next generation sequencing.
easy to understand |
|
h*y
发帖数: 208 | 18 求文章: Three-Dimensional Folding and Functional Organization Principles of
the Drosophila Genome
请将文章发到邮箱: s******************[email protected]
多谢了! |
|
|
|
m*******s
发帖数: 3142 | 21 Molecular Electronics: From Principles to Practice
Mike Petty
ISBN: 978-0-470-01307-6
Hardcover
544 pages
January 2008
Wiley List Price: US $240.00
唯一available链接http://hk.chem8.org/bbs/thread-12048-1-1.html
不过我没有帐号，看不到下载地址，
刚才看到有人说chem8的老大在此出没，就麻烦老大帮帮忙吧。
谢谢！ |
|
k*******n
发帖数: 2399 | 22 Halliburton 的principle scientist也是比entry高一点而已 |
|
l****k
发帖数: 16 | 23 返回的是一个COEFF matix， 看不懂... 根据这个matrix, 怎么知道那些是principle
components? |
|
|
r****y
发帖数: 1437 | 25 This is up to your input matrix, as mentioned in manual,
row of X is obs, column of x is variable
then coeff(:, 1) is the first PC (in decreasing component variance),
and so on.
scores are then in row manner again, scores(1, :) is the score for
the
first obs vector, and so on.
principle |
|
w****g
发帖数: 44 | 26 Any body here developed the program for first-principles calculations ?
Such as DFT, HF ?
How are those programming compared to MD ? any books/other materials to
start with ?
Thanks |
|
s*****s
发帖数: 28 | 27 PRINCIPLES OF ECONOMICS
Contents
Have An Agenda, and Know Why It's Important
Be Awake; Look Around
Be Ambitious, But Not Too Ambitions
Have Staying Power
Decide Who Is the Audience, and Learn How to Reach It
Keep Things in Perspective
Most kinds of intellectual endeavor hold out the prospect of a particular
satisfaction, that associated with expanding the possibilities for thinking
about ourselves and the world in which we live. Economics is no exception. To
be sure, economics does have i |
|
p*********d
发帖数: 136 | 28 Does the Supply - Demand Principle still work or apply at all? Look at the
oil price, it's hitting $92/barrel, and it keeps climbing. Any news about
supply downfall? What are the demand increase? |
|
i*********e
发帖数: 783 | 29 转两本经济学的书,一本是mankiw的principles of Microeconomics,还有一本是
Krugman的 macroeconomics, 都 是最新版本
要的同学给个价 |
|
u****u
发帖数: 229 | 30 【 以下文字转载自 JobHunting 讨论区 】
发信人: uuiiuu (无), 信区: JobHunting
标 题: Job opportunity for Principle Software Engineer
发信站: BBS 未名空间站 (Wed Jul 1 16:02:39 2009, 美东)
This full-time job is with a world class, reputed company in the medical
device/pharmaceutical industry in the Chicago area. The employer is
looking for experienced Software Engineers to design, develop and test
software for medical devices. Required skills include C/C++, C#, .Net, Java,
XML, database design in SQL, and experience in ful |
|
e***7
发帖数: 118 | 31 老板下学期教communications要用Principles of Communications by Rodger E.
Ziemer，让我扫描书上所有的图，书700多页，图无数，而且扫出来也不是很清楚，希
望有此书的大侠能给小弟发一份，感激不尽。老板用的是第六版，如果您有第五版，也
可以。
感谢感谢。
小弟邮箱是c***[email protected] |
|
m******n
发帖数: 18 | 32 Principle Engineer/Senior Engineer
Duties:
• To coordinate IC design and package design teams to implement new
technologies for various CMOS image sensor products;
• To develop and implement new circuits for enhancement of
electrical and optical performance of CMOS image sensor module;
• To work with the process development team to realize the CMOS
image sensor prototypes for various applications;
• To establish the design guidelines for CMOS image sensor chi... 阅读全帖 |
|
k*******d
发帖数: 1523 | 33 我没写全....
是 Senior Staff engineer 和 Principle Engineer 比.. |
|
m*****n
发帖数: 38 | 34 broadcom的title是注水的。超过50%的都是principle |
|
k*******d
发帖数: 1523 | 35 我没写全....
是 Senior Staff engineer 和 Principle Engineer 比.. |
|
m*****n
发帖数: 38 | 36 broadcom的title是注水的。超过50%的都是principle |
|
发帖数: 1 | 37 Location : Boston suburb.
Level: principle software engineer
Job Description: Setop box related.
With security background would be perfect fit.
I will help send your resume to hire manager directly. |
|
T*******5
发帖数: 2 | 38 A Group Leader/Principle Scientist position in Antibody Drug Discovery is
available at Shanghai Hengrui Pharmaceuticals Co. Ltd.
Responsibility:
- Design and perform research to advance cancer immunotherapy drug discovery
programs. Provide hands-on experimental support.
- Develop and perform in vitro immunoassays including primary lymphocyte
cultures, tumor-lymphocyte co-cultures, etc.
- Establish and run ex vivo tumor models.
- Stay abreast of latest scientific and technology advancements in t... 阅读全帖 |
|
c******a
发帖数: 159 | 39 很多书（到目前为止我看过的所有的书）谈到Hysenberg natural linewidth的时候（
in a two-level decay system, from excited state to ground state），用了这个
公式Delta E * Delta t = hbar. Delta E定义为FWHM,Delta t为激发态的mean life.
我很纳闷大于号去哪儿了??为什么直接取了等于号???为什么不是Delta E * Delta t >
= hbar,而是Delta E * Delta t = hbar？ Delta E * Delta t = hbar是正确的吗？
In other words, under what condition is equality in uncertainty principle
reached? (BTW, when equality is reached, the state is called minimum
uncertainty state, or 'squeezed' state.) |
|
h*********6
发帖数: 103 | 40 米国一课本上说的。
讲化学里的原子的量子力学模型。
提到The uncertainty principle时说的一个实验。
电子通过双狭缝后形成干涉。这个实验就是想观察那么电子到底通过哪个狭缝？或者一
个单独电子可以同时同时通过两个狭缝（则laser beam会有两个flashes)
然后说实验发现一个单独电子只能通过一个狭缝，a或者b狭缝。但是一旦通过laser
beam后，就没有干涉现象发生了。这时候发现两条正对狭缝的亮线，说明电子通过狭缝
后就behaves like a particle.
我对这个实验不大明白。
(算明白你问啥了)
谁说的啊? 没做过这个实验,理论上就是两个缝都防了激光或者别的,屏上也还是该有干
涉吧
(补一句,除非你把一缝合上了,去掉干涉哪那么容易?你想当然了吧.) |
|
f******e
发帖数: 198 | 41 Please help to distribute, thanks!
The Computational Materials Research Group in Materials Science and
Engineering Department at Michigan Technological University (Houghton, MI
49931) is seeking highly qualified applicants for a postdoctoral researcher
position in First Principles computations. The successful candidate will
work on Density Functional Theory calculations of nanoscale ferroic
phenomena. A Ph.D. in Physics or Materials Science and working experience in
Vienna Ab-initio Simulation P... 阅读全帖 |
|
|
w*****e
发帖数: 197 | 43 The classic problem is following:
B(t) is a brownian motion and determine the probability
F( X, T ) = P{ B(t) <= X for 0 <= t <= T }
where X > 0
This one has a very nice solution using reflection
principle. So my question is how to generalize this?
How about Y(t) = mu * dt + sigma * dw, where mu and sigma
can be state/Y dependent, again calculate:
F( X, T ) = P{ Y(t) <= X for 0 <= t <= T }
I vaguely recall we can use some kind of PDE and then
go back to integration to solve it. But I can't work |
|
j******n
发帖数: 91 | 44 当有drift的时候（constant），reflection principle该怎么用？ |
|
s***a
发帖数: 7 | 45 if you mean "ab initio" in computational science. it basically means that you
start from schrodinger equation.and don't use any emperical things.
for example, if you want to do molecular dynamics to a ion-electron system.
let's set ions as classical particles ( of course in some meaning this
treatment
is not "ab initio") then you need to solve the equation : mx''=-dV. if you
treat
dv as the empirical interaction among the ions then it is not first principle,
but if you solve dv from the schrodin |
|
b**g
发帖数: 335 | 46 人本原理(anthropic principle)
作者:高涌泉
2006/5/12
克普勒(Johannes Kepler，1571-1630)在提出
令他永垂不朽的行星运动三大定律之前，曾经著
迷于一个问题∶「为什么太阳系有六个行星（当
时人们所知道的行星只有看得见的水星、金星、
地球、火星、木星、土星等六个）？」一五九五
年的某一天，他正在对学生上数学课，忽然间得
到了灵感，认为答案是「因为能够同时具有外接
球与内切六个行星运动的各个球之间。」只有不寻常
的头脑能够想到这样有意思的问题与答案。
以今天的「后见之明」来看，克普勒的问题与
答案都是没有意义的∶第一，我们今天已经知道
行星其实不只六个，还有天王星、海王星、冥王
星等等。第二，从柏拉图立体所推论出的行星半
径，根本与真实的观测结果不符。第三，我们今
天已经有了一套很成功（由牛顿首先创立）的古
典力学体系，在这个体系之中，行星的半径是由
所谓的起始条件(initial condition)决定的，半
径的大小本身并没有什么独特性可言，不需要特
别的解释。如果地球的半径比目前还要小一些，
一点也没有违背牛顿力学原理。又例如， |
|
n*****n
发帖数: 3123 | 47 principles of biostatistics (second etition)
Author: Marcello Pagano and Kimberlee Gauvreau
多谢！ |
|
n***m
发帖数: 292 | 48 Design of Experiments: Statistical Principles of Research Design and
Analysis by R. O. Kuehl (Aug 13, 1999)
不知道版上的大侠们有没有这本书的pdf版 多谢多谢~ |
|
f***n
发帖数: 254 | 49 Title：Design of Experiments: Statistical Principles of Research Design and
Analysis
Statistics Series
Author R. O. Kuehl
Edition 2
求第二版。
谢谢。
20包子酬谢。 |
|
s*x
发帖数: 3328 | 50 发信人: SmallX (A.S.Wahlen|对爱人要宽容，对SB更要宽容), 信区: Piano
标 题: Basic Principles in Pianoforte Playing I
发信站: 北大未名站 (2009年10月13日10:43:17 星期二), 转信
Chapter I
The Modern Piano
The possibilities of the piano have been a matter of
continual development. The highly developed instrument of
today is the descendant of many attempts at perfection. When
Bartolomeo Cristofori, in the early years of the eighteenth
century, sought to improve the keyboard instruments he wa |
|
