search for: d_t

Hello, I am solving a set of ODEs using deSolve and have run into a problem I would appreciate some advice on. One of the parameters (m) in the ODEs changes between two states when one of the variables (D) crosses a threshold (D_T) for the first time in either direction. Additionally, when the variable crosses the threshold (either by increasing or decreasing), there is a time delay (delay) before the parameter shifts values. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Toy model: # define parameters P <- c(m = 10, R_1...

...rmeredith12 at gmail.com> wrote: > > Hello, > > I am solving a set of ODEs using deSolve and have run into a problem I > would appreciate some advice on. One of the parameters (m) in the ODEs > changes between two states when one of the variables (D) crosses a > threshold (D_T) for the first time in either direction. Additionally, when > the variable crosses the threshold (either by increasing or decreasing), > there is a time delay (delay) before the parameter shifts values. I think you migh not have fully reviewed the available functions in that package. Doing a...

Hi, I am trying to figure how to use dlm with constant terms (possibly time-dependent) added to both equations y_t = c_t + F_t\theta_t + v_t \theta_t = d_t + G_t\theta_{t-1} + w_t, in the way that S-PLUS Finmetrics does? Is there any straightforward way to transform the above to the default setup? Thanks, Tsvetan -------------------------------------------------------- NOTICE: If received in error, please destroy and notify sender. Sender does not i...

Hi I Have a very large dataset that I would like to conduct ANOVA tests on. Im not a very strong programmer so any help would be appreciated. the format is Identifier             A1       A2        B1      B2       C1   C2      Norm1         Norm2 1234                  1        1            NA     NA      4       3        NA               NA 4567                  2        2              4     

...nel: : exe="?" (sauid=81, hostname=?, addr=?, terminal=?)' Oct 5 20:16:11 orion kernel: audit(1223252171.572:8): policy loaded auid=4294967295 ses=4294967295 Oct 5 20:16:41 orion kernel: audit(1223252201.673:9): user pid=2172 uid=81 auid=4294967295 subj=system_u:system_r:system_dbus d_t:s0 msg='avc: received policyload notice (seqno=3) Oct 5 20:16:41 orion kernel: : exe="?" (sauid=81, hostname=?, addr=?, terminal=?)' Oct 5 20:16:41 orion kernel: audit(1223252201.676:10): policy loaded auid=4294967295 ses=4294967295 Oct 5 20:17:51 orion kernel: audit(122325227...

Hi,guys, HTML help is not right for math formula: For example: I got the following formula in help page of ca.jo in urca package: <p align="center"><i><B>X</B>_t = <B>Pi</B>_1 <B>X</B>_{t-1} + ... + <B>Pi</B>_k <B>X</B>_{t-k} + <B>&mu;</B> + <B>Phi D</B>_t +

...ystem - fix ocaml binding due to libxl API change - lot''s of tidy-ups too numerous to mention Please consider and apply :) -----8<--------------------------------------------------------------- Introduce python binding for libxl. The binding is not yet complete but list_domains, domid_to_name, domain_shutdown and domain_destroy methods are implemented and tested. These functions provide examples of the two basic patterns that all future methods should follow. About 5,000 lines of boilerplate is automatically generated to wrap and export all relevant libxl structure definitions. T...

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The series introduces auto-generation of the type definitions used in the libxl interface followed by auto-generation of a destructor function for each type. In the future it may be possible to use the related data structures for other purposes, for example auto-generation of the functions to marshal between C and language binding data types. tools/_libxl_types.h should be identical both before

I have data that looks like this: > df1 group id 1 red A 2 red B 3 red C 4 blue D 5 blue E 6 blue F I want a list of the groups containing vectors with the ids. I am avoiding subset(), as it is only recommended for interactive use. Here's what I have so far: df1 <- data.frame(group=c("red", "red", "red", "blue",