s*******2
发帖数: 47 | 1 请哪位大侠帮忙找一下这篇文献： Journal of biomolecular structure & dynamics
，
1994，12:355–366. 万分感谢～！ |
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d********s
发帖数: 23 | 2 【 以下文字转载自 Macromolecules 讨论区 】
发信人: dendrimers (xiaoqiu), 信区: Macromolecules
标 题: 审稿机会 方向是Molecular Dynamics Simulation and Characterization of Graphene-Cellulose Nanoccomposites
发信站: BBS 未名空间站 (Sun Feb 17 18:48:38 2013, 美东)
有兴趣并且方向match的同学请速速站内和我联系一下，如果方便的话给我一个简单的
CV |
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E*******r
发帖数: 370 | 3 2nm对于DLS来说，direct measurement行不通，
但是indirect measurement有戏，毕竟叫dynamic LS. |
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j********0
发帖数: 73 | 4 molecular dynamics, force filed, drug design。。。
本广告长期有效^_^ 欢迎站内联系
新年快乐！ |
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e********I
发帖数: 693 | 5 ☆─────────────────────────────────────☆
cavaliere ( the Griffins ) 于 (Tue Apr 15 23:12:19 2008) 提到:
最近因为课题需要解differential games，必须掌握分析的技术，看到多个论文里面引
用T. Basar & G. Olsder 的 dynamic noncooperative game theory，已经借来了准备
看。
不知道版上了解这本书的大侠多么，需要什么样的数学背景知识。 以前没有怎么接触
过variational analysis，会看起来很累么？ 多谢指点啊
☆─────────────────────────────────────☆
zjhtqf (Human, all too human) 于 (Tue Apr 15 23:29:48 2008) 提到:
这本书只是看到过，但没见谁在读，所以我也没去读。很多论文里面引用？
☆─────────────────────────────────────☆
DreamCity (神) |
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c*****u
发帖数: 4 | 6 最近读了几篇实证文章，发现这个模型用的很多，很想学习一下,感觉这个方法要
是掌握了，应该可以攒出篇文章来。看了一篇paper，这个模型应该是来自于统计中的
因子分析（Factor Analysis)，我理解就是假设这个不可观测到的因子有一个滞后项，
当然后来又有很多变形。
我主要迷惑是：这个模型跟Kalman filter，state-space model是什么关系？这两
个模型我只是大概知道一点，但感觉好像有关系（有篇文章里说是用Kalman filter方
法来估计这个dynamic factor model）。估计这种模型的常用软件是什么？
请高手指点，或者应该看哪些材料就可以更清楚？不盛感激！
|
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s*****n
发帖数: 12 | 7 很多变量是unobservable的，比如inflation target，建立state－space model可以用
kalman filter估计出来。这些unobserved variables可以写成dynamic factor model
的形式，比如F_t=Phi*F_t-1+e_t.
建议你去看Kim and Nelson的书（可以直接用google搜），这本书比较好懂，而且他们
的书上有gauss 的code。你如果熟悉matlab的话，用matlab直接写也是不错的选择。 |
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D******n
发帖数: 2965 | 8 此类game是否有唯一解的结论啊？在single agent的dynamic decidsion 下有吗？
本来想翻一翻文献，但开头的介绍都太繁了。后来问了一个小伙（不是做这个的），坚
定的告诉我没有。这里有没有大牛帮我confirm一下啊。 |
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T******n
发帖数: 3180 | 9 如果dynamic current总变就会出问题了 |
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d******d
发帖数: 2210 | 10 不好意思，能详细说说为什么吗？
对adc不熟
只是想当然如果analog输入很小的话至少adc里头digital部分没什么switch
dynamic电流应该小一点 |
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s***f
发帖数: 226 | 11 那是charge leakage problem，怪不得我一开始也被你搞混了。charge sharing那是
dynamic circuit的另一个问题。 |
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l**t
发帖数: 452 | 12 【 以下文字转载自 ME 讨论区,原文如下 】
发信人: leot (leot), 信区: ME
标 题: 哪位大虾能给我简要介绍一下Dynamics of Measurement
发信站: Unknown Space - 未名空间 (Mon Dec 22 16:54:10 2003) WWW-POST
我自己看了看书，我的理解就是关于在测量中仪器对输入的响应。不知道这样理解对吗？
我自己在看Physical Measurement and Analysis（Nathan Cook & Ernest Rabinowicz,
Addison-Wesley Publishing,1963）这本书。
书上介绍说所有的仪器的响应基本上都可以归结为两个微分方程。这个我基本能够看懂。
我的问题是，
1）我如果知道这个仪器的响应，这对我的测量工作用什么用呢？
2）我应该如何根据这个仪器的响应去改进我的测量方法？
3）我应该如何利用这个仪器的响应去分析数据？
但是在书上去没有找到这几个问题的答案。请大虾们给我言简意赅的介绍一下。
谢谢！ |
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k********y
发帖数: 1 | 13 I just started learning fluid dynamics,I am so stuck,:( please help!
if a body is immersed in fluid,and it is in equilibrium,what force is exerted
on it?and what force is exerted on fluid?
if a body is immersed in fluid,and moving with velocity V,what force is
exerted on it?what force is exerted on fluid?
IF the mass of a barge is M,and it is moving with speed U,it travels along a
canal of depth H,and the distance from the surface to the bottom of the barge
is h' when is it moving with speed U,t |
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s*****y
发帖数: 37 | 14 【 以下文字转载自 Macromolecules 讨论区,原文如下 】
发信人: spindly (Rice killer), 信区: Macromolecules
标 题: 谁有dynamic light scattering的资料阿
发信站: Unknown Space - 未名空间 (Tue Mar 22 19:02:21 2005) WWW-POST
introductory的，选了化工的一门课，真上当啊，要做这个题目的project，现在还不知
道怎么回事。明白的大人们指教指教俺，救命啊 |
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d*******1
发帖数: 1 | 15 有3个Ph.D.的RA机会
1. Dynamics and Controls of Umanned Air Vehicle (UAV) 在BYU, 是ECE. 主要是做
一些动力学及控制方法,还有硬件实现.老板是老美少壮派,学术水平应该还可以.
2. Data fusion/Processing, Sensing, 模式识别及一些简单的硬件设计用在医疗领域
. 在Univ of Utah, 是ME. 先让当TA, 老板刚毕业不久,具体项目还没拉到
3. Digital human modeling,好像叫数字(虚拟)人建模和仿真,主要做人的动力学,运动
学建模和一些优化吧, 这个似乎方向比较新,在Univ of Iowa, 是ME, 老板是
distinguished,应该还比较牛吧. 就是这个方向感觉...
不知道这三个方向哪个相对好些? 对将来工作来说呢? 请大家指点迷津, 矬子里拔将军
也拔一个出来. |
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c*****e
发帖数: 238 | 16 My opinion is that dynamic issues are about the relations between forces and
motions, while kinetics deal with velocities,speeds or motions only. |
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a****h
发帖数: 19 | 17 right,dynamics 强调动力。
kinetics强调运动。 |
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m***n
发帖数: 266 | 18 dynamics决定反应能不能发生，即使需要1000万年。
kinetics决定这个反应能有多快，即使只有0。000001%的转化率。
and |
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s*****y
发帖数: 27 | 19 is there anybody who is learning protein dynamics ? and protein folding and
binding something like that . |
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o**********y
发帖数: 1041 | 20 【 以下文字转载自 Physics 讨论区 】
发信人: orientalruby (Math is for young, amusing), 信区: Physics
标 题: 板上有研究Nonlinear dynamical systems的大牛？
发信站: BBS 未名空间站 (Fri Aug 6 22:11:25 2010, 美东)
能否推薦一兩本經典的入門書籍。。
下學期，my boss要我脩讀這個方嚮。。。應該是物理系或數學系課程
謝謝 |
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g****t
发帖数: 31659 | 21 Guckenheimer, J., and Holmes P. (1983).
Nonlinear oscillations, dynamical systems, and bifurcations of vector fields
google引用数5581
另外Lyapunov的博士论文有英文版. |
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f*******g
发帖数: 55 | 22 Consider a dynamic process { Q[t] } evolving on the set of M-by-M positive
semi-definite matrices. In particular, { Q[t] } follows the recursive
equation:
Q[t+1] = Q[t] - Q[t] a[t] a[t]' Q[t] / (a[t]' (c I + Q[t] ) a[t]) + d I
where:
a[t] is an M-by-1 vector, which can be adjusted;
c and d are fixed positive real numbers; and
I is an M-by-M identity matrix.
Note that by normalization, we can consider a[t] to be a unit vector without
loss of generality.
The "total reduction" at time t
... 阅读全帖 |
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s*******6
发帖数: 50 | 23 求review:
dynamical systems, invariant manifolds, 以及各种与其相关的applications
如有机会请站内信件联系。万分感谢！ |
|
x**u
发帖数: 21 | 24 我尝试了降低minimum increment time to 1e-9, 这样一来STANDARD 倒是给我算了. 可
是需要3 MILLION INCREMENTS 才能算完, 只好做罢.
我不太清楚如何调整mesh. 现在采用了LINEAR PERTURBATION 的FREQUENCY 和DYNAMICS
步骤, 反而能够得到结果了. 搞得我也不清楚这个STRUCTURE 到底是不是NONLINEARITY.
Explicit应该很强, 只可惜我不会用.
谢谢指点. |
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h**m
发帖数: 1 | 25 Do anyone have ever done the research about
using molecular dynamics to
simulate the process of nanometric cutting?? |
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i****0
发帖数: 1 | 26 有个类似关节转动的system
运动频率不高，有个变化的外力使其转动
我想知道转动的同时，关节连接出的变形和应力场
请问这个是用quasi-static还是dynamic？
似乎quasi-static就可以把？这两个有什么区别的优缺点么？
谢谢了！ |
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l***7
发帖数: 960 | 27 想用dynamic implicit模拟一个棒棒在水中振动,但只是想简化地加一个damping
coefficient,比如0.5. 我看manual上有很多种方式,有material damping 也可以加
dashpot, 还有什么viscous damping.
因为我方向不是振动,所以没什么经验,不知道哪一种比较合适? 谢谢! |
|
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h*****i
发帖数: 6 | 29 We are currently seeking a postdoctoral research fellow to work in the field
of strong field dynamics and attosecond spectroscopy. A qualified candidate
should hold a doctorate degree in chemistry or physics. Working experience
with ultrafast lasers is required for a successful candidate. Atomic/
molecular spectroscopy background is highly desired. The compensation will
be competitive and commensurate with experience. If interested, please write
to w*[email protected]. |
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l*********o
发帖数: 88 | 30 我的基本情况：
1. PhD in Applied Mathematics, 2009
2. First author on 8 papers.
3. Reviewer for Chinese Physics B and PLoS Neglected Tropical Diseases
求如下领域的审稿机会：
statistical physics,complex network, epidemic dynamics，game-theoretic
modeling, etc.
多谢。
email: j*********[email protected] |
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s*******6
发帖数: 50 | 31 求review:
dynamical systems, invariant manifolds, 以及各种与其相关的applications
如有机会请站内信件联系。万分感谢！ |
|
l********V
发帖数: 178 | 32 Dynamic programming也满重要的吧 |
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b******k
发帖数: 58 | 33 A quick google search shows more than 5 articles on the first page about
dynamic mean-variance hedge, lazyass.
PS, I doubt the mean-variance has any practical uses in the industry due to
its flawed assumption in the return distribution. |
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M**T
发帖数: 314 | 34 generally, static hedging of options is more expensive than dynamic hedging
of stocks. b/c option mkt is not as deep and complete as stock mkt.
in some extremity, the above relation could be be broken. |
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c**********e
发帖数: 2007 | 35 I want to dynamically allocate int Q[L+1][M+1]. I tried the following.
How to fix it?
int **Q = new int*[L+1]; // allocate the rows
for (i = 0; i < (L+1); i++) // now allocate the columns
*Q[i] = new int[M+1];
The error: cannot convert from 'int *' to 'int' |
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l*******3
发帖数: 186 | 36 question:
1. given the choice between two different static replication portfolios
that
match an option's payoff, what criteria would you use to decide between
the
two?
2. what are some of the practical problems of dynamic replication?
transaction cost (so we cannot replicate too frequently).
any other concerns?
Thank you! |
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S******y
发帖数: 1123 | 37 I have written a function (see below) which encloses a boxplot. My
function "xbox" takes in a variable name (such as "age"), and do a boxplot.
Now I would like to add a title for the graph dynamically displaying the
variable name as part of title.
But, in reality, the title displays VALUES of my variable.
Obviously, sprintf does not work.
Can somebody shed light on how to solve my problem in properly displaying a
title ?
Thanks. |
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p********0
发帖数: 186 | 38 Hi,
In SQL server, I can construct a dynamic SQL annd execute
like sqlstatement ='select '+variable_name+'from '+table_name. then I exec(
sqlstatement)
In R I tried to specify text = paste('logitdd <- glm( Y ~ ', 'Xs', variable_
name,
'..).
then eval(expression(text))
there is no error, but the logitdd didnot get assigned. I tried to copy the
text and execute in command line, everything works. Does anyone know how to
do it?
Thanks in advance
' |
|
y*****y
发帖数: 98 | 39 The dynamic is described by the latent process theta[1:T]. In other words,
theta is of interest. Usually the transition matrix G is unknown, whose
inference certainly involves theta. |
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S****t
发帖数: 2183 | 40 借人气问一下谁用Fathom Dynamic Data Software？请帮个忙转化一下数据。给学生上
课要用。文件是ftm格式的，但我没有这个软件。
请联系我：m******[email protected]，我把文件发给您！
谢谢了！ |
|
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w*******y
发帖数: 60932 | 42 6/10/2010 Only 7 am - 9:30 pm.
Link:
http://www.6ave.com/shop/InStoreSpecials.htm
Specs:
Video Screen Size 54.6" 1
Aspect Ratio Widescreen
Resolution 1920 (H) x1080 (V)
Dynamic Contrast Ratio 100,000:1
Response Time 4ms
LCD 120Hz Yes
Native Resolution 1080p
Audio
Sound Effect System SRS TruSurround HD
Sound Output(RMS) 15Wx2
Input & Output(Wireless)
Bluetooth No
802.11 Yes (with adapter)
Input Output
HDMI 4 (1 side 3 back)
Composite (AV) 1
Comp |
|
w*******y
发帖数: 60932 | 43 I-inc iH-252HPB 25" Widescreen LCD Monitor - 1080p, 1920x1080, 15000:1
Dynamic, 800:1 Native, 2ms, 16:9
For 169.99 - 25.84 BingCash Back( Search Key Word " Tigerdirect Cashback" =
15.3% BCB ) - 20$ ebillMe rebate:
http://www.ebillme.com/rebates/ebillme_rebate_201006_tiger.pdf
= 124.15
Save $20 off $100 with eBillMe rebate, looks like its good even for those
who have redeemed in the past.Good for everyone i.e. first time as well as
past users but for only 1 rebate for offer( I called and che |
|
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w*******y
发帖数: 60932 | 47 Link:
http://www.adorama.com/LOT47LD500.html
The LG 47LD500 is 47" 1080p LCD HDTV with an aspect ratio of 16:9. It has a
response time of 8ms and a vertical refresh rate of 120Hz. Additional
features include a 100,000:1 dynamic contrast ratio and many connections to
make sure your television can handle any tasks you throw at it.
|
|
w*******y
发帖数: 60932 | 48 US Appliance is carrying the 55" Sony KDL-55HX800 3D Dynamic Edge LED
Backlit LCD 1080p HDTV with Motionflow 240Hz & Bravia Internet - Energy Star
for $1649.
Link:
http://www.us-appliance.com/kdl55hx800.html
Discounted price will show up only after added to cart.
Is this a good deal?
|
|
w*******y
发帖数: 60932 | 49 Amazon has Sennheiser HD595 Dynamic High-Grade Premiere Headphones for $129.
40 ships for FREE with Super Saver Shipping.
Link
Link:
http://www.amazon.com/Sennheiser-HD595-High-Grade-Premiere-Head
Price isn't as good as J&R deal during X'mas/New Year ( $117 ) but I haven't
seen the price drop since then .
|
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w*******y
发帖数: 60932 | 50 I just noticed there's a free theme on the ps store. It's pretty cool if you
like sackboys driving cars. To find it, it's under newest dynamic themes in
the ps store.
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