search for: hydraulics

I was advised someone might be able to help me with this. Very truly yours, Dwayne E. Culp, P.E., CFM Effective February 8, 2009, my contact information becomes: Dwayne E. Culp, P.E., CFM | JACOBS ENGINEERING GROUP : North American Infrastructure | Manager: Hydrology & Hydraulics Section | 5995 Rogerdale Road- B2047B | Houston, TX 77072 | 281-776-2109 | 832.351.7766 Fax | 713.898.1977 Mobile | Dwayne.Culp@Jacobs.com <mailto:Dwayne.Culp@Jacobs.com> | ________________________________ From: Culp, Dwayne Sent: Friday, February 27, 2009 3:04 PM To: Ted Cleveland; R-c...

Dear R useRs, I have a problem with nls.lm function of minpackl.lm package. I need to fit the Van Genuchten Model to a set of data of Theta and hydraulic conductivity with nls.lm function of minpack.lm package. For the first fit, the parameter estimates keep changing even after 1000 iterations (Th) and I have a following error message for fit of hydraulic conductivity (k); Reason for

In the plot below, there are some grid cells that have values below 10, which is the lowest "cut" value I have specified. Is there a way, without adjusting the number of cuts, to tell R to fill in those cells with the lowest possible color (in this case greeen)? There is a white "hole" in the image about a quarter of the way in from the left side, this is what I would like to

...ode - Worknode - Worknode ... | Large RAID5 NAS boxes (NFS only) Thanks for any information/pointers in the right direction. (all directions are open: lvs,mosix,<???>) Regards, |^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | Leroy(dot)vanLogchem (at) wldelft(dot)nl | Systems Group | WL | Delft Hydraulics - http://www.wldelft.nl |________________________________________

Greetings, I have a groupedData (nmGroupedData) object created with the following syntax: Soil <- groupedData( ksat ~ conc | soil_id/sar/rep, data=soil.data, labels=list(x='Solution Concentration', y='Saturated Hydraulic Conductivity'), units=list(x='(cmol_c)', y='(cm/s)') ) the original data represents longitudinal observations in the form of:

I am trying to fit a nonlinear regression to infiltration data in order to determine saturated hydraulic conductivity and matric pressure. The original equation can be found in Bagarello et al. 2004 SSSAJ (green-ampt equation for falling head including gravity). I am also VERY new to R and to nonlinear regressions. I have searched the posts, but am still unable to determine why my data come up

John Rosatti, Excavators, 3D, NASA and Why Should I care? Well, because! There are two definitions for excavator; one is any person engaging in excavation is called an excavator. The second definition of excavator is, of course, the vehicles called excavators, which are sometimes called diggers, trackhoes, fronthoes, and 360-degree excavators or just 360. This is not to be confused with

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Dear Sir, My name is ChenHua, and I'm writing on behalf of the China-Lutong mechanical company. Located in the south east of China, we specialize in hydraulic heads for the VE distributor pump. We can supply standard, good quality units at a very competitive price. The following types are available: Engine model VE PUMS code NO UNIT PRICE(EX WORKS) ISUZU) NP-VE4/11L

Dear all, I am new to R and to it's programming philosophy. The following function is supposed to work on a vector, but I can't figure out how to do that without looping through every element of it. Is there a more elegant way? Note: I have shortened it, so it is NOT correct from the pipe hydraulics point of view # Calculate wall friction factor # reynolds: Reynolds number # dk: relative roughness of pipe lambda_wall <- function (reynolds, dk) { z <- 1 result <- 0 for (Re in reynolds) { if (Re <= 2320) { # Laminar flow lambda <- 64/Re } else if (Re &l...

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Dear Sir, My name is ChenHua, and I'm writing on behalf of the China-Lutong mechanical company. Located in the south east of China, we specialize in hydraulic heads for the VE distributor pump. We can supply standard, good quality units at a very competitive price. The following types are available: Engine model VE PUMS code NO UNIT PRICE(EX WORKS) ISUZU) NP-VE4/11L

Dear Sir, My name is ChenHua, and I'm writing on behalf of the China-Lutong mechanical company. Located in the south east of China, we specialize in hydraulic heads for the VE distributor pump. We can supply standard, good quality units at a very competitive price. The following types are available: Engine model VE PUMS code NO UNIT PRICE(EX WORKS) ISUZU) NP-VE4/11L

...lease reply directly to my e-mail address. Best regards, Dirk De Wachter *--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--* Dirk De Wachter, MScEE, MScBME, PhD mailto:Dirk.DeWachter at rug.ac.be postdoctoral fellow, systems administrator http://navier.rug.ac.be Hydraulics Laboratory, Ibitech, University of Gent voice:+32 9 264 3281 Sint-Pietersnieuwstraat 41, B-9000 Gent Belgium faxto:+32 9 264 3595 ~--~--~--~--~--~--~--~--~--~--~--~--~--~--~--~--~--~--~--~--~--~--~--~--~ -------------- next part -------------- A non-text attachment was scrubbed... Name: auth-p...

hello mailing list! i still consider myself an R beginner, so please bear with me if my questions seems strange. i'm in the field of biology, and have done consecutive hydraulic conductivity measurements in three parallels ("Sample"), resulting in three sets of conductivity values ("PLC" for percent loss of conductivity, relative to 100%) at multiple pressures

Hello LLVM team, our software FluidSIM (www.fluidsim.de) simulates pneumatic, hydraulic and electric circuits. For the mathematical models we use the language Modelica (www.modelica.org). We developed our own Modelica simulator which solves the dynamical created algebraic differential equation systems. One tool is our small JIT compiler, which compiles mathematical expressions like “2*x0 +

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I have a main fortran program and within a loop of this program i would like to call R. I need to transfer a rather large matrix (100 by 25000) between the two codes. Can anyone suggest me the most efficient way to do this or give me more general information on how i can call R from my fortran program or where i can find some related information. luc Luc Feyen Department of Hydrology and

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