AGMODELS-L: 199702XX

is the compilation of discussion during Feb 97

via AB4EL Web Digests @ SunSITE

AGROMOMY Homepage @ SunSITE

>From LISTSERV@crcvms.unl.edu Fri Feb 21 01:01:45 1997
Date: Fri, 21 Feb 1997 00:00:46 -0600
Subject: AGMODELS-L Digest - 10 Feb 1997 to 20 Feb 1997




Date: Fri, 21 Feb 1997 00:00:46 -0600 Reply-To: Agmodels-L Discussion List <AGMODELS-L@CRCVMS.UNL.EDU> Sender: Agmodels-L Discussion List <AGMODELS-L@CRCVMS.UNL.EDU> From: Automatic digest processor <LISTSERV@CRCVMS.UNL.EDU> Subject: AGMODELS-L Digest - 10 Feb 1997 to 20 Feb 1997 To: Recipients of AGMODELS-L digests <AGMODELS-L@CRCVMS.UNL.EDU> There is one message totalling 16 lines in this issue. Topics of the day: 1. Just arrived
Date: Wed, 19 Feb 1997 17:55:37 +0000 From: James A Garratt <J.A.Garratt@NEWCASTLE.AC.UK> Subject: Just arrived Hi! I've just joined this mailbase, and would like to introduce myself. I have just started a PhD at Newcastle University (UK), and will be looking at pesticide movement models. My main interest is a Mediterranean climate, and the greenhouse environment. I don't know much about modelling at the moment, so I will just listen and learn for a while. Best wishes to everyone here, James Garratt --------------------------------

>From LISTSERV@crcvms.unl.edu Mon Feb 24 01:02:57 1997
Date: Mon, 24 Feb 1997 00:01:59 -0600
Subject: AGMODELS-L Digest - 20 Feb 1997 to 23 Feb 1997




Date: Mon, 24 Feb 1997 00:01:59 -0600 Reply-To: Agmodels-L Discussion List <AGMODELS-L@CRCVMS.UNL.EDU> Sender: Agmodels-L Discussion List <AGMODELS-L@CRCVMS.UNL.EDU> From: Automatic digest processor <LISTSERV@CRCVMS.UNL.EDU> Subject: AGMODELS-L Digest - 20 Feb 1997 to 23 Feb 1997 To: Recipients of AGMODELS-L digests <AGMODELS-L@CRCVMS.UNL.EDU> There is one message totalling 12 lines in this issue. Topics of the day: 1. Just arrived
Date: Sun, 23 Feb 1997 12:08:16 -0500 From: Chi Ho Sham <chi@CRSA.BU.EDU> Subject: Re: Just arrived my email address has changed -- the new address is csham@ziplink.net please modify your record accordingly. Chi Ho Sham --------------------------------

>From LISTSERV@crcvms.unl.edu Tue Feb 25 10:28:00 1997
Date: Tue, 25 Feb 1997 00:01:11 -0600
Subject: AGMODELS-L Digest - 23 Feb 1997 to 24 Feb 1997




Date: Tue, 25 Feb 1997 00:01:11 -0600 Reply-To: Agmodels-L Discussion List <AGMODELS-L@CRCVMS.UNL.EDU> Sender: Agmodels-L Discussion List <AGMODELS-L@CRCVMS.UNL.EDU> From: Automatic digest processor <LISTSERV@CRCVMS.UNL.EDU> Subject: AGMODELS-L Digest - 23 Feb 1997 to 24 Feb 1997 To: Recipients of AGMODELS-L digests <AGMODELS-L@CRCVMS.UNL.EDU> There is one message totalling 19 lines in this issue. Topics of the day: 1. Just arrived
Date: Mon, 24 Feb 1997 17:51:02 -0600 From: "Stites, Will" <wstites@UWSP.EDU> Subject: Re: Just arrived > >my email address has changed -- the new address is csham@ziplink.net > >please modify your record accordingly. > >Chi Ho Sham OK. --------------------------------

>From LISTSERV@crcvms.unl.edu Wed Feb 26 01:04:07 1997
Date: Wed, 26 Feb 1997 00:02:30 -0600
Subject: AGMODELS-L Digest - 24 Feb 1997 to 25 Feb 1997




Date: Wed, 26 Feb 1997 00:02:30 -0600 Reply-To: Agmodels-L Discussion List <AGMODELS-L@CRCVMS.UNL.EDU> Sender: Agmodels-L Discussion List <AGMODELS-L@CRCVMS.UNL.EDU> From: Automatic digest processor <LISTSERV@CRCVMS.UNL.EDU> Subject: AGMODELS-L Digest - 24 Feb 1997 to 25 Feb 1997 To: Recipients of AGMODELS-L digests <AGMODELS-L@CRCVMS.UNL.EDU> There are 4 messages totalling 111 lines in this issue. Topics of the day: 1. Farm models (3) 2. modeling
Date: Tue, 25 Feb 1997 10:05:00 -0800 From: "Roberto D. Sainz" <rdsainz@UCDAVIS.EDU> Subject: Farm models Dear Ag modellers, I am new to this list, and have no idea what topics have been discussed. My modelling experience has been focussed on the individual animal, so farm-level modelling is new to me. I am involved in a project that requires setting up simple models of extensive livestock (cattle, sheep, camelids) production systems in Latin America, in order to identify weaknesses in these systems. Do any of you have any suggestions about current models that could be adapted to this task? At this stage, we are looking for something simple (e.g., an Excel spreadsheet) that maybe could be added to in the future as needed. Any info would be much appreciated. Thanks! Roberto D. Sainz Dept. of Animal Science Univ. of California Davis, CA 95616 Tel. (916) 752-0526 Fax (916) 752-0175 Email rdsainz@ucdavis.edu "In theory, there is no difference between theory and practice; in practice there is."
Date: Tue, 25 Feb 1997 13:43:32 -0500 From: Aezapp@AOL.COM Subject: Re: Farm models I have a great modeling newsletter that tells you how to become a model. If you are interested in this email be at aezapp@aol.com
Date: Tue, 25 Feb 1997 13:26:08 -0500 From: Aezapp@AOL.COM Subject: modeling I have a great newsletter about modeling. If you are interested email me at aezapp@aol.com
Date: Tue, 25 Feb 1997 14:33:33 -0800 From: "Timothy J. Harsch" <tharsch@CALWEB.COM> Subject: Re: Farm models Roberto - I have something for you which I think will interest you greatly. Go to http://www.ranchvision.com to learn more about it. From your email to the AGMODELS list I think it is just what you are looking for. Sincerely, Advanced Veterinary Services Tim Harsch Computer Programmer/Technical Support (916) 759-8374 P.S. Please visit the Home Page of a revolutionary new program called "Ranch Vision." http://www.ranchvision.com ---------- > From: Roberto D. Sainz <rdsainz@UCDAVIS.EDU> > To: AGMODELS-L@crcvms.unl.edu > Subject: Farm models > Date: Tuesday, February 25, 1997 10:05 AM > > Dear Ag modellers, > > I am new to this list, and have no idea what topics have been discussed. My > modelling experience has been focussed on the individual animal, so > farm-level modelling is new to me. I am involved in a project that requires > setting up simple models of extensive livestock (cattle, sheep, camelids) > production systems in Latin America, in order to identify weaknesses in > these systems. Do any of you have any suggestions about current models that > could be adapted to this task? At this stage, we are looking for something > simple (e.g., an Excel spreadsheet) that maybe could be added to in the > future as needed. Any info would be much appreciated. Thanks! > > Roberto D. Sainz > Dept. of Animal Science > Univ. of California > Davis, CA 95616 > Tel. (916) 752-0526 > Fax (916) 752-0175 > Email rdsainz@ucdavis.edu > > "In theory, there is no difference between theory and practice; in practice > there is." --------------------------------

>From LISTSERV@crcvms.unl.edu Thu Feb 27 01:01:54 1997
Date: Thu, 27 Feb 1997 00:00:53 -0600
Subject: AGMODELS-L Digest - 25 Feb 1997 to 26 Feb 1997




Date: Thu, 27 Feb 1997 00:00:53 -0600 Reply-To: Agmodels-L Discussion List <AGMODELS-L@CRCVMS.UNL.EDU> Sender: Agmodels-L Discussion List <AGMODELS-L@CRCVMS.UNL.EDU> From: Automatic digest processor <LISTSERV@CRCVMS.UNL.EDU> Subject: AGMODELS-L Digest - 25 Feb 1997 to 26 Feb 1997 To: Recipients of AGMODELS-L digests <AGMODELS-L@CRCVMS.UNL.EDU> There are 5 messages totalling 330 lines in this issue. Topics of the day: 1. modeling 2. Farm Models (4)
Date: Tue, 25 Feb 1997 13:07:03 -0600 From: Ashok Verma <Akv4411@SUGAR.AGE.UIUC.EDU> Subject: Re: modeling send me. Ashok Verma Graduate Research Assistant Lab for Water Quality Modeling and GIS Department of Agricultural Engineering 1304 W Pennsylvania Ave University of Illinois at Urbana-Champaign Urbana, IL 61801 URL:http://www.age.uiuc.edu/students/graduate/akv/akv.html Phone 217-333-9415 217-333-7956 Fax: 217-244-0323
Date: Wed, 26 Feb 1997 07:25:40 -0800 From: Richard Brazil <rbrazil@RANCHVISION.COM> Subject: Farm Models Have you looked at Ranch Vision? I believe it is exactly the tool you are looking for. Ranch Vision creates a computer model of grazing livestock operations and tracks them up to five years into the future. It analyses up to eighteen different cattle, sheep and/or goat enterprises simultaneously. Ranch Vision provides you with outputs on virtually every facet of the ranch business including such things as herd numbers, monthly and annual cash flow, sales, purchases, enterprise gross margins, enterprise efficiency, grazing demands, profit/loss, replacement costs, break-even values, and numerous measures of profitability, solvency, financial efficiency, liquidity and much more. Ranch Vision is a fully equipped stand alone program for Windows with a complete Help system that walks you through every step. I think you'll find it is exceedingly easy to use and provides you with tremendous information concerning grazing livestock operations. Several at UCD have contributed to its development including Jim Fadel and Jim Oltjen. Check it out on the web at http://www.ranchvision.com I don't think you'll be disappointed. Richard M. Brazil, DVM Advanced Veterinary Services P.O Box 437 Potter Valley, CA 95469 http://www.ranchvision.com phone (707) 462-0408 email rbrazil@ranchvision.com > From: Roberto D. Sainz <rdsainz@UCDAVIS.EDU> > To: AGMODELS-L@crcvms.unl.edu > Subject: Farm models > Date: Martes 25 de Febrero de 1997 1:05 PM > > Dear Ag modellers, > > I am new to this list, and have no idea what topics have been discussed. My > modelling experience has been focussed on the individual animal, so > farm-level modelling is new to me. I am involved in a project that requires > setting up simple models of extensive livestock (cattle, sheep, camelids) > production systems in Latin America, in order to identify weaknesses in > these systems. Do any of you have any suggestions about current models that > could be adapted to this task? At this stage, we are looking for something > simple (e.g., an Excel spreadsheet) that maybe could be added to in the > future as needed. Any info would be much appreciated. Thanks! > > Roberto D. Sainz > Dept. of Animal Science > Univ. of California > Davis, CA 95616 > Tel. (916) 752-0526 > Fax (916) 752-0175 > Email rdsainz@ucdavis.edu > Have you looked at Ranch Vision? I believe it is exactly the tool you are looking for. Ranch Vision creates a computer model of grazing livestock operations and tracks them up to five years into the future. It analyses up to eighteen different cattle, sheep and/or goat enterprises simultaneously. Ranch Vision provides you with outputs on virtually every facet of the ranch business including such things as herd numbers, monthly and annual cash flow, sales, purchases, enterprise gross margins, enterprise efficiency, grazing demands, profit/loss, replacement costs, break-even values, and numerous measures of profitability, solvency, financial efficiency, liquidity and much more. Ranch Vision is a fully equipped stand alone program for Windows with a complete Help system that walks you through every step. I think you'll find it is exceedingly easy to use and provides you with tremendous information concerning grazing livestock operations. Several at UCD have contributed to its development including Jim Fadel and Jim Oltjen. Check it out on the web at http://www.ranchvision.com I don't think you'll be disappointed. Richard M. Brazil, DVM Advanced Veterinary Services P.O Box 437 Potter Valley, CA 95469 http://www.ranchvision.com phone (707) 462-0408 email rbrazil@ranchvision.com
Date: Wed, 26 Feb 1997 08:02:31 -0800 From: Richard Brazil <rbrazil@RANCHVISION.COM> Subject: Farm Models Have you looked at Ranch Vision? I believe it is exactly the tool you're looking for. Ranch Vision creates a computer model of grazing livestock operations and tracks them up to five years into the future. It analyses up to eighteen different cattle, sheep and/or goat enterprises simultaneously. Ranch Vision provides you with outputs on virtually every facet of the ranch business including such things as herd numbers, monthly and annual cash flow, sales, purchases, enterprise gross margins, enterprise efficiency, grazing demands, profit/loss, replacement costs, break-even values, and numerous measures of profitability, solvency, financial efficiency, liquidity and much more. Ranch Vision is a fully equipped stand alone program for Windows with an extensive Help system that walks you through every step. I think you'll find it is exceedingly easy to use and provides you with tremendous information concerning grazing livestock operations. Several at UCD have contributed to its development including Jim Fadel and Jim Oltjen. Check it out on the web at http://www.ranchvision.com I don't think you'll be disappointed. Richard M. Brazil, DVM Advanced Veterinary Services P.O Box 437 Potter Valley, CA 95469 http://www.ranchvision.com phone (707) 462-0408 email rbrazil@ranchvision.com > From: Roberto D. Sainz <rdsainz@UCDAVIS.EDU> > To: AGMODELS-L@crcvms.unl.edu > Subject: Farm models > Date: Martes 25 de Febrero de 1997 1:05 PM > > Dear Ag modellers, > > I am new to this list, and have no idea what topics have been discussed. My > modelling experience has been focussed on the individual animal, so > farm-level modelling is new to me. I am involved in a project that requires > setting up simple models of extensive livestock (cattle, sheep, camelids) > production systems in Latin America, in order to identify weaknesses in > these systems. Do any of you have any suggestions about current models that > could be adapted to this task? At this stage, we are looking for something > simple (e.g., an Excel spreadsheet) that maybe could be added to in the > future as needed. Any info would be much appreciated. Thanks! > > Roberto D. Sainz > Dept. of Animal Science > Univ. of California > Davis, CA 95616 > Tel. (916) 752-0526 > Fax (916) 752-0175 > Email rdsainz@ucdavis.edu >
Date: Wed, 26 Feb 1997 08:19:43 -0800 From: Richard Brazil <rbrazil@RANCHVISION.COM> Subject: Farm Models Have you looked at Ranch Vision? I believe it is exactly the tool you're looking for. Ranch Vision creates a computer model of grazing livestock operations and tracks them up to five years into the future. It analyses up to eighteen different cattle, sheep and/or goat enterprises simultaneously. Ranch Vision provides you with outputs on virtually every facet of the ranch business including such things as herd numbers, monthly and annual cash flow, sales, purchases, enterprise gross margins, enterprise efficiency, grazing demands, profit/loss, replacement costs, break-even values, and numerous measures of profitability, solvency, financial efficiency, liquidity and much more. Ranch Vision is a fully equipped stand alone program for Windows with an extensive Help system that walks you through every step. I think you'll find it is exceedingly easy to use and provides you with tremendous information concerning grazing livestock operations. Several at UCD have contributed to its development including Jim Fadel and Jim Oltjen. Its on the web at http://www.ranchvision.com I don't think you'll be disappointed. Richard M. Brazil, DVM Advanced Veterinary Services P.O Box 437 Potter Valley, CA 95469 http://www.ranchvision.com phone (707) 462-0408 email rbrazil@ranchvision.com > From: Roberto D. Sainz <rdsainz@UCDAVIS.EDU> > To: AGMODELS-L@crcvms.unl.edu > Subject: Farm models > Date: Martes 25 de Febrero de 1997 1:05 PM > > Dear Ag modellers, > > I am new to this list, and have no idea what topics have been discussed. My > modelling experience has been focussed on the individual animal, so > farm-level modelling is new to me. I am involved in a project that requires > setting up simple models of extensive livestock (cattle, sheep, camelids) > production systems in Latin America, in order to identify weaknesses in > these systems. Do any of you have any suggestions about current models that > could be adapted to this task? At this stage, we are looking for something > simple (e.g., an Excel spreadsheet) that maybe could be added to in the > future as needed. Any info would be much appreciated. Thanks! > > Roberto D. Sainz > Dept. of Animal Science > Univ. of California > Davis, CA 95616 > Tel. (916) 752-0526 > Fax (916) 752-0175 > Email rdsainz@ucdavis.edu >
Date: Wed, 26 Feb 1997 08:35:20 -0800 From: Richard Brazil <rbrazil@RANCHVISION.COM> Subject: Farm Models Dear Roberto, Have you looked at Ranch Vision? I believe it is exactly the tool you're looking for. Ranch Vision creates a computer model of grazing livestock operations and tracks them up to five years into the future. It analyses up to eighteen different cattle, sheep and/or goat enterprises simultaneously. Ranch Vision provides you with outputs on virtually every facet of the ranch business including such things as herd numbers, monthly and annual cash flow, sales, purchases, enterprise gross margins, enterprise efficiency, grazing demands, profit/loss, replacement costs, break-even values, and numerous measures of profitability, solvency, financial efficiency, liquidity and much more. Ranch Vision is a fully equipped stand alone program for Windows with an extensive Help system that walks you through every step. I think you'll find it is exceedingly easy to use and provides you with tremendous information concerning grazing livestock operations. Several at UCD have contributed to its development including Jim Fadel and Jim Oltjen. Its on the web at http://www.ranchvision.com I don't think you'll be disappointed. Richard M. Brazil, DVM Advanced Veterinary Services P.O Box 437 Potter Valley, CA 95469 phone (707) 462-0408 email rbrazil@ranchvision.com > From: Roberto D. Sainz <rdsainz@UCDAVIS.EDU> > To: AGMODELS-L@crcvms.unl.edu > Subject: Farm models > Date: Martes 25 de Febrero de 1997 1:05 PM > > Dear Ag modellers, > > I am new to this list, and have no idea what topics have been discussed. My > modelling experience has been focussed on the individual animal, so > farm-level modelling is new to me. I am involved in a project that requires > setting up simple models of extensive livestock (cattle, sheep, camelids) > production systems in Latin America, in order to identify weaknesses in > these systems. Do any of you have any suggestions about current models that > could be adapted to this task? At this stage, we are looking for something > simple (e.g., an Excel spreadsheet) that maybe could be added to in the > future as needed. Any info would be much appreciated. Thanks! > > Roberto D. Sainz > Dept. of Animal Science > Univ. of California > Davis, CA 95616 > Tel. (916) 752-0526 > Fax (916) 752-0175 > Email rdsainz@ucdavis.edu > --------------------------------

>From LISTSERV@crcvms.unl.edu Fri Feb 28 13:57:59 1997
Date: Fri, 28 Feb 1997 05:03:41 -0600
Subject: AGMODELS-L Digest - 26 Feb 1997 to 27 Feb 1997




Date: Fri, 28 Feb 1997 05:03:41 -0600 Reply-To: Agmodels-L Discussion List <AGMODELS-L@CRCVMS.UNL.EDU> Sender: Agmodels-L Discussion List <AGMODELS-L@CRCVMS.UNL.EDU> From: Automatic digest processor <LISTSERV@CRCVMS.UNL.EDU> Subject: AGMODELS-L Digest - 26 Feb 1997 to 27 Feb 1997 To: Recipients of AGMODELS-L digests <AGMODELS-L@CRCVMS.UNL.EDU> There is one message totalling 98 lines in this issue. Topics of the day: 1. Interpolation methods continued
Date: Thu, 27 Feb 1997 11:20:12 -0600 From: "D.Hartkamp (NRG - CIMMYT, INT.)" <dhartkamp@CIMMYT.MX> Subject: Re: Interpolation methods continued Hi Ranjan, Some time pased before I could respond to your comment. It doesn't seem as simple as that. There is still debate on the most important factor that influences the choice of the spatial interpolator: Collins and Bolstad, 1996: data characteristics (range, variance and correlation with other variables) are most important. These characteristics change with temporal and spatial scale, therefore the choice is temporal and spatial scale dependent. MacEachen and Davidson, 1987: data measurement accuracy, data density and distribution have most influence on interpolation accuracy. These are different viewpoints. Dewi Hartkamp CIMMYT Mexico ---------- From: Ranjan Muttiah[SMTP:muttiah@brcsun0.tamu.edu] Sent: Thursday, January 30, 1997 5:22 PM To: Multiple recipients of list Subject: Re: Interpolation methods continued Accuracy of a surface makes sense with respect to all the data you have. At a certain level (may be watershed/regional level) measurement of noise may be minimal than other levels where more accurate measurements may be neccessary (ex., bowen ratio at the watershed level vs. weighing lysimeter at the field scale level for ET measurements). So I would say accuracy of a surface is resolution independent and a function of the number of data points (ex., the GCV uses this concept). begin 600 WINMAIL.DAT M>)\^(@\1`0:0" `$```````!``$``0>0!@`(````Y 0```````#H``$-@ 0` M`@````(``@`!!) &`!0!```!````# ````,``# #````"P`/#@`````"`?\/ M`0```$,`````````@2L?I+ZC$!F=;@#=`0]4`@````!A9VUO9&5L0AA'X%6;0> `C N'89)!4!D<F\'D&XG!4 1L!/@(+\>L"*0!W +4!XP(O%T M$8#Y(5%4: 20'C $`"*0'E#V; ,@#;!B(^ >, (@(['_'C $8!/ )' C0!=! M`' %0+YF`- @< 7 (\(D<&X:<#D*4&YC!Y$ELA%P;VG[*! E<&8EHR 0(^ ' M,2>1W1/0V)7(I^/\P&9SH$<-0? M(2!%20!XNBGW;]$=\1]A=Q^C>E! (3[E_PJ%:YLD@1_Q!O! ] N .F?[+!,M M@&944"<`,'(I``J%_R6R6@`&T#$Q*0$M4T:4>I7!);)'0U8@=1&P(Z+_)(%G M`2@0!3""(!TLC&]H/Q=I3VI9%L$`D/ ``P`0$ `````#`!$0`0```$ `!S! IQ_@`T22\`4 `"#! Q_@`T22\`1X`/0`!````!0```%)%.B `````6^@` ` end --------------------------------

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Prepared by Steve Modena, AB4EL
Suggestions and comments to: modena@SunSITE.unc.edu