**3 degree of freedom system**how to build 3 d.o.f of system comprising of mass,spring,damper using
simulink.
...

**Patent: Apparatus and method for loading a system reference diskette image from a system partition in a personal computer system**http://www.freepatentsonline.com/5128995.pdf
A personal computer system according to the present invention comprises
a system processor, a random access memory, a read only memory, and at
least one direct access storage device. A direct access storage device
controller coupled between the system processor and direct access
storage device includes a protection mechanism for protecting a region
of the storage device. The protected region of the storage device
includes a master boot record, a BIOS image and a system reference
diskette image. The BIOS image includes a section know...

**degrees of freedom**
Hi there,
I misstyped frnd(32.5,14.2,1,1) and yet I got an output.
What is the interpetation of a d.f. when it is non-integer??
Thanx!!
"leo nidas" <bleonidas25@yahoo.gr> wrote in message <gbn9vl$2km$1@fred.mathworks.com>...
>
> Hi there,
>
> I misstyped frnd(32.5,14.2,1,1) and yet I got an output.
>
> What is the interpetation of a d.f. when it is non-integer??
>
>
> Thanx!!
It all depends on the underlying statistic. See http://en.wikipedia.org/wiki/Degrees_of_freedom_(statistics)#effective_degrees_of_freedom
Jos
...

**[SDMAS] ACM Transactions on Autonomous and Adaptive Systems**
ACM Transactions on Autonomous and Adaptive Systems
Special Issue on
Formal Methods for Pervasive, Self-Adaptive, and
Context-Aware Systems
Aims and Scope
Pervasive, self-adaptive and context-aware systems are increasingly
realized for safety-critical domains that include healthcare, emergency
scenarios, and disaster recovery. These domains present new challenges
that include expressing, verifying and validating requirements and
ensuring functional correctness. Formal methods are one approach to
address these challenges. Pervasive, self-adaptive and context-aware
system...

**Degrees of Freedom in Regression**What is the definition of the quantity "Degrees of Freedom"
in multiple linear regression that results in the relation
DOF = N - (p+1) = N - Nw
where Nw is the number of estimated weights?
How is the concept and equation modified for
multiple nonlinear regression?
How are the concepts and equations modified
for multivariate linear regression and
multivariate nonlinear regression?
Please post replies to all three newsgroups.
TIA,
Greg Heath
"Greg Heath" <heath@alumni.brown.edu> wrote in message =
news:a5db2ac2-cb2a-4b50-a4c7-5751650ded57@q35g2000hsg.googlegrou...

**chi2pdf degrees of freedom**I am trying to convert a chi-square error surface to a pdf using chi2pdf. I have a series of measurements (dataMeas) and corresponding estimates (dataEst) which I generate over a grid using a model of the measurement system (awgn with sigma "sig" assumed for everything). I compute the normalized chi-square error surface for each grid point as follows:
resid = (dataMeas-dataEst(:,gridVal));
csErr(gridVal) = (resid*resid')/(sig^2*numDf);
where numDf is the number of degrees of freedom computed as the number of samples in the data vectors minus the number of parameters used...

**Template systems**I'm looking for a good idea or ready library for templates. HTML with
PHP isn't the best solution (it's more difficult for end-users of CMS
to edit them). Perhaps, everything I need is:
- variables - e.g. {var}
- sections or conditions (some elements won't be printed out)
- loops or selecting fragments*
- cache (recommended for speed)
The template system must be fast and efficient. Most probably I will
create own library for CMS requirement. However, i think about
existing scripts, e.g. XT (XHTML Templates) and OPT (Open Power
Templates).
XT
+ based on XML (DOM functions)
+ t...

**question about the system method**Hi, all
I want to use system method to run a background process, like
system("ruby deamon.rb") # the deamon.rb runs a dead loop
When my main process ends, I want to end the background process
too.
How can I do it?
If I can get the pid of background process, I can use
Process.kill. But the system method dosen't return the pid.
Does anyone here know the solution?
Thank you
Jarod Zhu
On Mon, Dec 1, 2008 at 12:29 PM, Jarod Zhu <zhujie2003info@gmail.com> wrote:
> Hi, all
>
> I want to use system method to run a background ...

**Euler method for a system**I have the two equations:
dx/dt = -2x
dy/dt = 5x - y
x(0) = 5
y(0) = 1
for t values between 1 and 200
I want to use the Euler method to solve this system and then graph each x and y vs t.
Could someone point me to a code that could do this? Don't worry, I don't need to come up with the code myself, so helping me out here isn't contributing to cheating in anyway. Thanks,
Jim
> I have the two equations:
>
> dx/dt = -2x
> dy/dt = 5x - y
>
> x(0) = 5
> y(0) = 1
>
> for t values between 1 and 200
>
> I want to use the Euler method to solve t...

**linhyptest and degrees of freedom**Happy new year all,
I'm using nlinfit to parameterize an exponential function
and want to run an F test on the fit of the model. It
appears that I can do this with linhyptest, but the P values
returned by linhyptest are much smaller than expected. I'm
confused about what degrees of freedom for error i should be
specifying. Does this appear correct for a 2 parameter model?:
expon_fit = @(b,x) b(1)*exp(b(2)*x);
beta=[guess1, guess2]
[b,r,J,COVB]=nlinfit(X,Y,expon_fit,beta);
dfe=length(Y)-2;
H=[1 0;0 1];
c=[0;0];
[p,t,r]=linhyptest(b,COVB,c,H,dfe);
thanks,
Jeff
...

**Degrees of Freedom in GLM**I ran a 7 by 2 GLM on 554 cases with two dependent variables. I
obtained the following results for the overall test.
Work category 1 F=14.95 with 14, 1074DF
Time F=317.06 with 2,537DF
Interaction Work category by Time F=4.54 14,1074DF
There were not an equal number of observations in each cell.
If I run separate univariate anovas for each of the IV for work
category I get
variable 1 N=371 F=22.19 7,363DF
variable 2 N=366 F=28.54 with 7,358DF. (missing 5 values from N=371)
I dont understand why the DF are so high for the first analysis.
Can someone explain this for me, pl...

**exit() method in System class**There is a method exit(int) in System class. what is the parameter
int refers to?
jayanthi.tkc@gmail.com wrote:
>There is a method exit(int) in System class. what is the parameter
>int refers to?
<http://java.sun.com/javase/6/docs/api/java/lang/System.html#exit(int)>
Which part of the second sentence are you having trouble
understanding? 'abnormal'? 'nonzero'?
--
Andrew Thompson
http://www.athompson.info/andrew/
Message posted via http://www.javakb.com
Andrew Thompson wrote:
> jayanthi.tkc@gmail.com wrote:
>
>>There is a method exit(int) in...

**Degree of freedom in Neural Networks**Hi Neural Network people,
I have a question about some posts on the Newsreader concerning the degree of freedom for adjusting the weights.
The following conditions for adjusting the weights properly is made:
Neq > Nw
with
Neq = N*O = N % Number of training equations
Nw = (I+1)*H + (H+1)*O % Number of unknown weights to estimate
Nw in this case applies to I-H-O structure. Does the rule Neq>Nw also apply to structures with more hidden Layers? I am not asking about the rule for calculating nw for a multilayered network.
Is it possible for one trainingequation to adjust weigths pr...

**degrees of freedom in proc mixed**Hi All,
I am having some difficulty understanding the way that proc mixed is
computing degrees of freedom with a repeated measures model. The total
degrees of freedom add up to more than the number of replicates
(subjects), hence my confusion.
My design includes three fixed treatments with 33, 31, and 31
replicates, respectively. The response of each replicate is measured
twice (the repeated component). I also have several covariates and
their interactions with the treatment (irrig) and the repeated effect
(season) in the model.
In all there are 95 subjects and 190 observations.
The who...

**Question about Ruby system() method**I have a Ruby application running in a Qtopia enviornment. One method I
have opens up word processing documents. In order to do so I have to
issue a qcop wrapped in a Ruby system() call. This qcop command causes
Hancom Word to open up to the specific document I pass along as an
paramter. Like so:
system("qcop QPE/Application/HancomMobileWord 'setDocument(QString)'
'/path/to/myDocument.doc'")
This works fine, except when I close the word processing document the
Qtopia application I wrote disappears. I can see the Ruby script still
running actively as a background pro...

**degree of freedom for b-splines**Hello everyone,
I have a mesh of control points in 3D with some uniform spacing that
defines a b-spline. Say, the mesh has dimensions 10 * 10 * 10 = in the
three directions.
I am looking at some computer code that says that the degree of
freedom of this b-spline is 3 * 1000 = 3000. I am struggling to
understand why this is so.
Does someone here know what might explain this?
Many thanks,
Luca
"Luca" <luca.pamparana@gmail.com> wrote in message
news:d2d0c4c4-583b-4bea-b3fd-326b7d6b826a@d4g2000vbm.googlegroups.com...
> Hello everyone,
>
> I have a mesh of control po...

**degrees of freedom in smoothing splines**Hello everyone,
I've the following problem with using spline toolbox in matlab:
I want to use matlab's csaps smoothing spline function to fit noisy brain data.
To optimize the fit (and avoid overfitting) a further smoothness constraint input parameter p is neccessary. Furthermore, I want to estimate this smoothness parameter in dependence of AIC criterion of the current fit. For this, the degrees of freedom of the used smoothing spline is needed, but I don't know how to access this value in matlab. I read that it is related to the trace of the smoothing matrix (also called hat m...

**Degrees of Freedom, aggregate data**I have a question on degrees of freedom.
Consider that I aggregate my data using three dichotomous factors into 8
strata. If I run a Poisson regression, say using GENMOD, do I not have 8
degrees of freedom? What if I repeat this study, but double the person-
time under observation. I still have 8 DoF, no?
Does using the offset account for this?
I would appreciate any comments and references, especially with regards to
rates (person-time data).
Thank you,
Kevin
...

**Degrees of freedom in chi squared**Hi,
I am doing a chi squared test for a genetics problem where I have the
numbers of three different genotypes and I know their predicted
proportions.
The degrees of freedom in such a problem is 1.
When I use SPSS (selecting chi square from the list of
non parametric tests) it automatially uses df=2.
Is there a simple way I can set df to my required value of 1.
Thanks,
Inf.
On 19 May 2007 02:58:10 -0700, Inf <infinitysquared@gmail.com> wrote:
> Hi,
>
> I am doing a chi squared test for a genetics problem where I have the
> numbers of three differ...

**Conjugate Gradient Method and system solver**I’m writing because I have a couple of problems and I can�t
find a method to solve it efficiently.
So I ask for your help to solve my problems.
Here they are:
� Solve the system Ax=b where A∈Mn, with n>100, symmetric
and sparse with less than 6 non-zeros elements per line. x and b
∈Mn*3.
� Find a minimizer of the function g=1/2xSx-bx where S∈Mn,
with n>100, symmetric and sparse with less than 6 non-zeros
elements per line. x and b ∈Mn*3.
Waiting for your answer.
Best regards,
vsc
...

**Seek method in File System object**How can i use seek method in FSO(File System Object)
Following is my code:
Const ForReading = 1
Dim AppStr As String
Dim i As Integer
Dim Pos As Integer
Dim Pos1 As Integer
Dim PosSev As Integer
Dim PosTicket As Integer
Dim Ticket As String
Dim Severity As String
Dim PagerNumber As String
Dim myText As String
'Dim s As Timer
Form1.Text3.Text = ""
Dim strNextLine As String
Dim PagerNo As String
' start of comments
Set objFSO = CreateObject("Scripting.FileSystemObject")
Set robjFSO = CreateObject("Scripting.FileSystemObject")
Set objTextFile = objFSO....

**system simulation and verification methods (NIOS)**what ways and approaches are there to do system level simulation?
i have a nios system module and a user logic which have been connected
together via the avalon bus. can simulation be done using quartus II?
Hi,
Yes, you can simulate Nios using the Quartus II simulator. For more
advanced simulation (if you want to view code execution, for example),
there is additional simulation support built into the Nios kit for
using ModelSim (both ModelSim OEM version which comes with a Quartus
subscription), or the full version. Please have a look at Altera app
note 189 (http://www.altera.com/literature/...

**enough degrees of freedom in a repeated design**Hi,
My data consists of five subjects that have been measured using five
different machines. I have several variables measured with the data
from each machine. This is a test intended to verify that I can mix
data from different machines without introducing too much error.
To test the significance of the machine factor in each of my variables,
I=B4m using proc GLM and machine as a repeated measure.
proc glm DATA =3D repeats ;
model MACH_1 MACH_2 MACH_3 MACH_4 MACH_5 =3D ;
REPEATED machine 5/ SUMMARY ;
My question whether I have enough degrees of freedom or not. Five
subjects, five mac...

**Removing variance components and degrees of freedom**Hello,
I'm running a split-plot nested model in proc mixed and have a question
concerning variance components. Some of the random effects (R) are
estimated to be 0.
I thought about removing them, but doing so inflates the fixed effect
ddfs drastically (i.e. trt ddf goes from 9 to 65). Is it better to
remove such terms, regardless of how the ddfs change, since they
explain zero variance in the data? What is the accepted standard on
this?
Any info will be greatly appreciated,
Paige
Model design:
unit - whole
site(unit) - R
rep(site unit) - R
treatment - sub
treatment*unit
treatment*si...

**Proc GLM and degrees of freedom (was: What do I do Wrong???)**Ahmed Abdel-Ghany asked "What do I do wrong???"
Dear Ahmed,
you certainly failed to add an 'interest fuelling' subject line to
your question so it may well have gone unnoticed by the group of
excellent statisticians participating here.
So I took the liberty of adding some eye-catching keywords to your
question. Hope it helps getting answers.
Robert Bardos
Ansys AG, Z�rich, Switzerland
Here are links to the OP's (original poster) question:
http://www.listserv.uga.edu/cgi-bin/wa?A2=ind0612b&L=sas-l&F=&S=&P
=38223
or (hopefully wrap-safe):
http://previ...