search for: insulator

Displaying 20 results from an estimated 154 matches for "insulator".

2009 Mar 22
3
data analysis. R
so i am having this question what should i do if the give data file (.txt) has 4 columns, but different lengths? how can i read them in R? any idea for the following problem? Gas consumption (1000 cubic feet) was measured before and after insulation was put into a house. We are interested in looking at the effect of insulation on gas consumption. The average outside temperature (degrees celcius)
2007 Dec 12
3
lm/model.matrix confusion (? bug)
Dear List-members, Hopefully someone will help through my confusion: In order to get the same coefficients as we get from the following ## require (MASS) summary ( lm(Gas ~ Insul/Temp - 1, data = whiteside) ) ...................... we need to do the following (if we use model.matrix to specify the model) ## summary ( lm(Gas ~ model.matrix(~ Insul/Temp - 1) - 1, data = whiteside) )
2008 Mar 05
1
testing for significantly different slopes
Hi, How would one go about determining if the slope terms from an analysis of covariance model are different from eachother? Based on the example from MASS: library(MASS) # parallel slope model l.para <- lm(Temp ~ Gas + Insul, data=whiteside) # multiple slope model l.mult <- lm(Temp ~ Insul/Gas -1, data=whiteside) # compare nested models: anova(l.para, l.mult) Analysis of Variance
2013 Dec 11
0
Solar Windows Webinar - US AIR FORCE APPROVED - See thru radiant barrier
?What is an Inflector Window Insulator? http://www.youtube.com/watch?v=21DiKS5mt4k Energy Efficiency Done Right presents information on the In'Flector See Through Radiant Barrier Window and Skylight Insulator and the Energy Efficiency Industry. We will examine the growth of the energy efficiency, conservation, energy indepen...
2004 Aug 06
0
speex_denoise on non-microphone noise (static ?)
Understand that it's a *guess*. If this fixes or at least betters the situation, you're going to need to find a legit way to insulate these cards, or to switch cards. If it's for customers, I should hope you wouldn't be using enamelled aluminum foil. :D -----Original Message----- From: Tongbiao Li [mailto:tli@viack.com] Sent: Thursday, September 18, 2003 11:20 AM To:
2004 Aug 06
0
speex_denoise on non-microphone noise (static ?)
Take what I say with a grain of salt: I'm an amateur and haven't actually touched Speex in any way, yet. I'm just sort of passing on personal belief from personal experience. Also, check and make sure that the microphone line is insulated. There are a number of problems with sound cards picking up interference from the host machine. The wires that run between ICs on a card
2004 Aug 06
0
speex_denoise on non-microphone noise (static ?)
Thanks for the speedy response and detailed, enlightening explanation. Now I understand where the problem is, and will try out your suggestions just to further confirm my conjecture. When I am done, I have to take the foil out, though. This is a product for our customers to use, and although we've got budget for mulffing every sound card we developers use, most likely the company
2006 Apr 24
1
Re: Shielding of T1/E1 cables WAS RE: Pinoutsfor T1/E1 crossover
> Ever looked at the underground cable in the street outside your > building? If it's more than 20 years old, it's probably paper-insulated > gel-filled cable, with an _extremely_ thin amount of insulation between > the conductors and _zero_ insulation between the pairs. T1s seem to work > just fine on it, unless it's very old or they try to put more than 6-8 > spans
2010 Feb 08
3
What is the equivalent function in R to xyplot in S?
Page 140 of MASS uses the function xyplot. But I don't find it in R. Is there a package that I should load to use xyplot. Or there is a function with a different name in R that does the same thing as xyplot in S. xyplot(Gas ~ Temp | Insul, whiteside, panel = function(x, y, ...) { panel.xyplot(x, y, ...) panel.lmline(x, y, ...) }, xlab = "Average external temperature (deg. C)", ylab
2007 Feb 15
2
?OT? Linux 2.6: bridge + routing firewall
Hi All! I need to deploy a bridge firewall using linux kernel 2.6. I had success using kernel 2.4 plus br-nf patch. But the configuration does not work with kernel 2.6. If the default policy for the iptables FORWARD chain is ACCEPT I have a bridge. If iptables FORWARD chain is DROP I have an insulator (no packet flows). Any hint? I did some google search and in many places they say "kernel 2.6 is not recommended", "no luck with kernel 2.6", etc. Any link to a success story of a bridge firewall with kernel 2.6? Any personal experience? Thanks in advance, Edésio
2006 Nov 14
6
netmask 255.255.255.255 vs ip route add via ... (bug?)
Greetings routing folks, I want to use the netmask 255.255.255.255 to insulate (not quite isolate) machines on a shared subnet from each other. This works just fine on win XP, but Linux iproute will not acccept the gateway address in one step -- neither on the command line nor via DHCP: Here''s the interface, set up with a netmask of /32: # ip addr ... 2: eth0:
2018 Dec 15
2
Documentation examples for lm and glm
A pragmatic solution could be to create a simple linear regression example with variables in the global environment and then another example with a data.frame. The latter might be somewhat more complex, e.g., with several regressors and/or mixed categorical and numeric covariates to illustrate how regression and analysis of (co-)variance can be combined. I like to use MASS's whiteside
2005 May 14
2
different ways to disable https in apache...
Hello, I built apache+openssl+mod_ssl. It is working fine, and I have been starting the server with: apachectl startssl Recently, however, I have decided that I will not be doing anything over https (for a while, at least) with this web server, so for security reasons, I want to only run on port 80. So now I start the server with: apachectl start And it runs without SSL. My question is, is
2002 Jun 19
1
superscripts in xyplot labels
R-helpers; I tried to get a superscripted 3 in the following xyplot example but failed: >data(whiteside) >xyplot(Gas ~ Temp | Insul, whiteside, panel = function(x, y, ...) { panel.xyplot(x, y, ...) panel.lmline(x, y, ...) }, xlab = "Average external temperature (deg. C)", ylab = paste(paste("Gas consumption (1000", expression(ft^3),")"), aspect
2010 Apr 25
1
Struggling with two questions : Newbie student .
Hi , I am struggling with these two question . Any help would be appreciated ,Im looking at doing them on r ? 1. Tests for indications of asbestos in the lungs of employees at an insulation manufacturer resulted in four persons with positive indications of asbestos being sent to a medical center for further testing . if 45% of the employees have positive indications of asbestos in their lungs ,
2011 Jul 19
1
notation question
Dear list, I am currently writing up some of my R models in a more formal sense for a paper, and I am having trouble with the notation. Although this isn't really an 'R' question, it should help me to understand a bit better what I am actually doing when fitting my models! Using the analysis of co-variance example from MASS (fourth edition, p 142), what is the correct notation for the
2009 Dec 24
2
CentOS 5.4 Upgrade installation failure
CentOS 5.3 has been running fairly good except for a slow ethernet connection so I thought I would upgrade to CentOS 5.4 to see if that improved things. I had previously changed fstab and menu.lst to use UUID instead of LABEL in order to insulate myself from partition label changes I wanted to make. This worked fine in CentOS 5.3. When I attempted to upgrade from 5.3 to 5.4 using the
2006 Nov 23
0
[LLVMdev] Byte code portability (was Re: libstdc++ as bytecode, and compiling C++ to C)
Chris Lattner wrote: > Many aspects of the target compiler can leak through. So if one wants to use the LLVM system as a cross compiler, one has to configure llvm-gcc as a cross compiler? Fair enough, I guess. > One trivial example is: > > int X = sizeof(long); So I assume this also means that while getelementptr insulates llvm byte code from the details of target specific address
2006 Jul 06
6
Capistrano deployment questions == Best practice type ones
Hi everyone, I''ve been sold on the whole idea of using Capistrano for deployment of my sites and have successfully deployed three apps in three different environments all with success. As I''m trying to configure my sites I''ve encountered a number of issues/questions hence this post. 1. Database.yml Twice I''ve been stumped by apps refusing to work on
2006 Nov 23
3
[LLVMdev] Byte code portability (was Re: libstdc++ as bytecode, and compiling C++ to C)
On Wed, 22 Nov 2006, [ISO-8859-1] Pertti Kellom�ki wrote: > Aside from stuff that depends on system headers, are there any other > dependencies on the host system? In other words, will llvm-gcc produce > exactly the same byte code for a given set of source files regardless of > where compilation takes place? This has obvious implications on Yes. Many aspects of the target compiler