search for: mathematician

Hi all. A friend of mine asked me to assist with an R presentation to the Penn State LUG in a few weeks. The audience will be predominately computer scientists and/or engineers (I suspect) and they are just looking for presentations of good open source software and my friend volunteered R. We are both relatively new to R, so I thought it would be best to ask the list for your opinion....what do

> -----Original Message----- > From: asterisk-users-bounces@lists.digium.com > [mailto:asterisk-users-bounces@lists.digium.com]On Behalf Of Andrew > Kohlsmith > Sent: Thursday, September 29, 2005 2:23 PM > To: asterisk-users@lists.digium.com > Subject: Re: [Asterisk-Users] Best echo canceller? > > > On Thursday 29 September 2005 17:04, Claudio Canseco wrote: >

Hi, This may belong more to r-develop, but general discussion may be useful (for the how many-th time ?) seq(2,5,-2) seq(5,2,2) both result in Error in seq.default(2, 5, -2) : wrong sign in 'by' argument But often, if not always, mathematicians and programmers want a behaviour e.g. in for loops, where this statement results in an empty statement, that is for (ii in seq(2,5,-2)) print(ii) were equivalent to for (ii in NULL) print(ii). The relevant part in seq.default is now if (n < 0) stop("wro...

Dear R-devel mailing list, I am wondering whether the "theta" and "phi" parameters of the "persp" function in the graphics commands are named in error (the names seem to have been swapped). Also, in the documentation to "persp", reference is made to "colatitude" when the effect in the image is actually that of "latitude". Thank you,

Hello List, If I have a module and the address looks like / admin/:controller/:action and I want to create a link to /:controller/:action, how do I have to specify that in a ''link_to'' or in a ''redirect :controller =>'' statement. It doesn''t strip the /admin part from it, which makes sense, but I need to go to a controller in the root. TIA,

...an extensive analysis because I did not suspect (and therefore did not read the documentation) that round was implemented as "for rounding off a 5, the IEC 60559 standard is expected to be used, 'go to the even digit'", resulting in round(1.5) = 2 round (2.5) = 2. As a non-mathematician I am both puzzled and intrigued by this rule as it is against what I have learned in my math courses, i.e. round(1.5) = 2 round (2.5) = 3. I would like to understand the reason behind this rule. Thanks for your comments. Markus -- Markus Didion Waldökologie Forest Ecology Inst. f. Terr...

...hough then with 100 observations one has 54% negative correlations). Creating T1 and T2 so they are related (and not correlated 1 as in the crude simulation) attenuates the effect. A more advanced simulation is provided below for those interested. Can anyone explain why this occurs in a way a non-mathematician is likely to understand? Thanks, Paul ############# # Crude simulation ############# > (T1<-rnorm(3)) [1] -0.1594703 -1.3340677 0.2924988 > (T2<-c(T1[2:3],NA)) [1] -1.3340677 0.2924988 NA > cor(T1,T2, use="complete") [1] -1 > (T1<-rnorm(3)) [1] -0.842585...

On Sun, Jul 16, 2017 at 06:02:15PM +0100, Pete Biggs wrote: > > > > The physicists and mathematicians who count there need high durations. > > Yes. I too run HPC clusters and I have had uptimes of over 1000 days - > clusters that are turned on when they are delivered and turned off when > they are obsolete. It is crucial for long running calculations that you > have a stable OS - y...

...conferencing project and faces some problems with it. First of all the projects in Visual-C++ doesn't work. I don't mean the path an dependecy problems. That is easy. But there are some errors. First i want to say that libspeex produce defently too much errors. I think it was written by a mathematician, right ;-)). We are very sensitive aboutr warning in the automoive section so in my opinion, all of these warning should be treated as errors and aditionale checks with a tool like PC-Lint should be made. However, here are the errors i got from the current CVS: libspeex: - File denoise.c is m...

...uot;Observations" (but no line) and directly below that a line for "Overall Mean" (that is all the three items in one legend)? For that I tried to assign the same names to the legends but this did not work either. So any help would be highly appreciated. Kind Regards, Thorn Thaler Mathematician Applied Mathematics Nestec Ltd, Nestl? Research Center PO Box 44 CH-1000 Lausanne 26 Phone: +41 21 785 8220 Fax: +41 21 785 9486

...;> Mathematics Teacher > > >> SAIL High School > > >> Tallahassee, Fla. > > >> > > >> mikE wohlgemutH > shred@m21.sail.leon.k12.fl.us > > >> sail higH schooL > http://www.sail.leon.k12.fl.us/ > > >> > > >> Mathematicians are like Frenchmen: whatever you say to them they > > >> translate into their own language, and forthwith it is something > > >> entirely different. > > >> -- Johann Wolfgang von Goethe > > > > > >-- > > >Mike Wohlgemut...

...reference(s) for how these probabilities and quantiles are calculated. I have already calculated the normal probability values using a Taylor expansion (http://www.sisweb.com/math/tables.htm). I realize these calculations must be very difficult, but I think it is insulting to our intelligence by mathematicians to hide the solutions to the CDFs from us like this. steve ps please reply to my e-mail address: sarthur at protogene.com, or I may not receive your reply. Thanks. -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien...

...explain a little bit the use of s.window and t.window in STL. If I decompose a series using the default values, I get a very irregular trends, but if I play with the options, I get less rare trends. If anybody can explain me the concepts behind these options I will appreciate a lot. I'm not a mathematician ;-) Thanks in advance Cheers, Antonio Antonio Rodr?guez Verdugo C.I.C.E.M. "Agua del Pino" Delegacion Provincial de Agricultura y Pesca P.O. Box 104 21071 HUELVA (Spain) -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://...

I would like to calculate a first and second derivative and am having problems finding a simple solution. My syntax may be off as I am not a mathematician, so pardon ahead of time. data: t<-seq(0,4, by=.1) The function is: H(t) = t^3-6*t^2+5*t + 30 from here I plot the curve: plot(x,y ,xlab="x-values", ylab="f(x)", type="l") But would like to similarly plot the curve for both the first and second derivatives. I can c...

Hi all, I am not a mathematician and I am trying to fit a function which could fit my observed data. Which function should I use and how could I fit it to data in R? Below are the data: x <- c(0, 9, 17, 24, 28, 30) y <- c(500, 480, 420, 300, 160, 5) I use R for Mac OS, version 2.10-1 2009-08-24 Thank you for your help. Vin...

Dear all. First of all, my english isn't verry good, but I hope I can convey my concern. I've a general question about the Amelia algorithm. I'm no mathematician or statistician, but I had to use R and impute and analyse some data, and Amelia showed results that fitted my expectations. I'll have to defend my choice soon, but I haven't totally grasped what Amelia does. I'm particularly interested in a simple as possible explanation in how Amelia...

...re it is mentioned that rsync replaces destination > files rather than updating them in-place. I'm not sure > where it would go in the current manpage. > > I'm no writer but i have been toying with the idea of a > practical "how the rsync utility works for the > non-mathematician" document. This wouldn't be a how-to but > would instead describe in broad terms what the rsync > internals are doing, the three processes involved and a > general sketch of the protocol. Something that wouldn't be > obsoleted by enhancements. OK. Having receive tepid e...

...ered out of date. Why is this? Everything in them is accurate for contemporary Debian, modulo one minor detail. If it's merely endorsement, I'm pretty Debian saavy and willing to vouch for their accuracy. -- Ross Vandegrift ross at kallisti.us "The good Christian should beware of mathematicians, and all those who make empty prophecies. The danger already exists that the mathematicians have made a covenant with the devil to darken the spirit and to confine man in the bonds of Hell." --St. Augustine, De Genesi ad Litteram, Book II, xviii, 37

...l a node (tftp / http) - To relieve the internal network printing, I create rpm packages that are installed on the nodes. All this happened about 3 years ago. Centos 1511 was established as a stable variant for the environment. It was one of my many different tasks in my work. The physicists and mathematicians who count there need high durations. My decision much on Centos because: - free - Maintaining until the year 2024, longer than the cluster will live. My way in the beginning was hard, because I had to learn everything from the scratch and I'm no longer the youngest, but my feeling gave m...

Hello folks, Let me first apologize: I'm not a professional nor a mathematician, just an ordinary guy, fooling around with the excellent R-package. I know the basic principles behind statistics, but haven't read anything more advanced than the ordinary first probability and statistics courses. Enough disclaimers? Good! I was examining the multinom-function (in the nnet-pa...