AGMODELS-L: 199607XX

is the compilation of discussion during Jul 96

via AB4EL Web Digests @ SunSITE

AGROMOMY Homepage @ SunSITE


>From root@crcnis1.unl.edu Fri Jul  5 10:46 EDT 1996
Date: Fri, 5 Jul 1996 09:34:01 -0500
Message-Id: <199607051434.AA20145@crcnis1.unl.edu>
Subject: AGMODELS-L digest 536

Contents:
RE: Can anybody help this person? (Jill Lee <jlee@asrr.arsusda.gov>)



Date: Fri, 5 Jul 1996 10:13:07 -0400 From: Jill Lee <jlee@asrr.arsusda.gov> Subject: RE: Can anybody help this person? ---------- From: Larry Pendarvis[SMTP:un@digital.net] Sent: Saturday, June 29, 1996 8:58 AM To: Multiple recipients of list Subject: Re: Can anybody help this person? ---------- Forwarded message ---------- Date: Tue, 2 Jul 1996 13:31:44 -0400 From: Lsmathis@aol.com To: agref@nal.usda.gov Subject: feed blending linear program Greetings, I am trying to get information via the net for friends who are missionaries running an orphanage and training farm in Honduras. Would you have any suggestion as to where they might find a linear program for feed blending? The Episcopal Agricultural School and Farm in Talanga, Honduras teaches poor boys unable to pay for advanced schooling. They are then able to take improved methods of agriculture back to their communities as well as find good jobs in agriculture. The farm raises chickens, pigs and cattle, both beef and dairy, in commercial quantities to feed the boys at the other two centers (the orphanage for boys age five to fifteen, and a vocational training institute) in addition to the farm. They want to reduce the cost of feed and have multiple sources of supply. We would like to obtain a linear program for feed blending that will allow us to balance protein, energy, calcium, fibre and other characteristics of materials at the minimum cost. We would like to obtain the desired minimums and maximums of each for each type of animal as well as characteristics of food sources. We need the program to be able to run on a PC. We have a 386 available to us at the farm. We currently have Windows 3.1 and DOS 6. Our e-mail address is el%hogar%sdnhon@sdnhq.undp.org Pete Kyle, Co-executive Director El Hogar de Amor y Esperanza Apartado Postal 764 Tegucigalpa, DC Honduras (504)-32-9214 Thank you very much for any help you might be able to provide. Laurelle Mathis
End of Digest
>From root@crcnis1.unl.edu Sat Jul  6 10:46 EDT 1996
Date: Sat, 6 Jul 1996 09:34:13 -0500
Message-Id: <199607061434.AA04415@crcnis1.unl.edu>
Subject: AGMODELS-L digest 537

Contents:
Can anybody help this person? (Jill Lee <jlee@asrr.arsusda.gov>)
FW: feed blending linear program (fwd) (Jill Lee <jlee@asrr.arsusda.gov>)



Date: Fri, 5 Jul 1996 11:34:04 -0400 From: Jill Lee <jlee@asrr.arsusda.gov> Subject: Can anybody help this person? ---------- Forwarded message ---------- Date: Tue, 2 Jul 1996 13:31:44 -0400 From: Lsmathis@aol.com To: agref@nal.usda.gov Subject: feed blending linear program Greetings, I am trying to get information via the net for friends who are missionaries running an orphanage and training farm in Honduras. Would you have any suggestion as to where they might find a linear program for feed blending? The Episcopal Agricultural School and Farm in Talanga, Honduras teaches poor boys unable to pay for advanced schooling. They are then able to take improved methods of agriculture back to their communities as well as find good jobs in agriculture. The farm raises chickens, pigs and cattle, both beef and dairy, in commercial quantities to feed the boys at the other two centers (the orphanage for boys age five to fifteen, and a vocational training institute) in addition to the farm. They want to reduce the cost of feed and have multiple sources of supply. We would like to obtain a linear program for feed blending that will allow us to balance protein, energy, calcium, fibre and other characteristics of materials at the minimum cost. We would like to obtain the desired minimums and maximums of each for each type of animal as well as characteristics of food sources. We need the program to be able to run on a PC. We have a 386 available to us at the farm. We currently have Windows 3.1 and DOS 6. Our e-mail address is el%hogar%sdnhon@sdnhq.undp.org Pete Kyle, Co-executive Director El Hogar de Amor y Esperanza Apartado Postal 764 Tegucigalpa, DC Honduras (504)-32-9214 Thank you very much for any help you might be able to provide. Laurelle Mathis
Date: Fri, 5 Jul 1996 13:58:37 -0400 From: Jill Lee <jlee@asrr.arsusda.gov> Subject: FW: feed blending linear program (fwd) ---------- From: Carol Singer[SMTP:csinger@nal.usda.gov] Sent: Friday, July 05, 1996 5:43 AM To: jlee@asrr.arsusda.gov Subject: feed blending linear program (fwd) Here's the e-mail message I got. I'd certainly appreciate any help you can give me on this! Carol Singer ------------------------------------------------------------------------------ Carol A. Singer Internet: csinger@nal.usda.gov D.C. Reference Center Telephone: (202) 720-3434 National Agricultural Library Fax: (202) 720-3200 ------------------------------------------------------------------------------ ---------- Forwarded message ---------- Date: Tue, 2 Jul 1996 15:20:01 -0400 (EDT) From: NAL Reference <agref@nal.usda.gov> To: Carol Singer <csinger@nal.usda.gov> Subject: feed blending linear program (fwd) ---------- Forwarded message ---------- Date: Tue, 2 Jul 1996 13:31:44 -0400 From: Lsmathis@aol.com To: agref@nal.usda.gov Subject: feed blending linear program Greetings, I am trying to get information via the net for friends who are missionaries running an orphanage and training farm in Honduras. Would you have any suggestion as to where they might find a linear program for feed blending? The Episcopal Agricultural School and Farm in Talanga, Honduras teaches poor boys unable to pay for advanced schooling. They are then able to take improved methods of agriculture back to their communities as well as find good jobs in agriculture. The farm raises chickens, pigs and cattle, both beef and dairy, in commercial quantities to feed the boys at the other two centers (the orphanage for boys age five to fifteen, and a vocational training institute) in addition to the farm. They want to reduce the cost of feed and have multiple sources of supply. We would like to obtain a linear program for feed blending that will allow us to balance protein, energy, calcium, fibre and other characteristics of materials at the minimum cost. We would like to obtain the desired minimums and maximums of each for each type of animal as well as characteristics of food sources. We need the program to be able to run on a PC. We have a 386 available to us at the farm. We currently have Windows 3.1 and DOS 6. Our e-mail address is el%hogar%sdnhon@sdnhq.undp.org Pete Kyle, Co-executive Director El Hogar de Amor y Esperanza Apartado Postal 764 Tegucigalpa, DC Honduras (504)-32-9214 Thank you very much for any help you might be able to provide. Laurelle Mathis
End of Digest
>From root@crcnis1.unl.edu Sun Jul  7 10:47 EDT 1996
Date: Sun, 7 Jul 1996 09:34:19 -0500
Message-Id: <199607071434.AA11763@crcnis1.unl.edu>
Subject: AGMODELS-L digest 538

Contents:
     Re: FW: feed blending linear program (fwd) ("Samuel O. Ogunbo" <C519117@MIZZOU1.missouri.edu>)



Date: Sat, 06 Jul 96 22:27:31 CDT From: "Samuel O. Ogunbo" <C519117@MIZZOU1.missouri.edu> Subject: Re: FW: feed blending linear program (fwd) There is a software called Power Feed Formulation designed to compute the least cost balanced feed mix for swine, poultry or any livestock. This I think is what you need. However, the software costs $25 and $50 for DOS and Windows version respectively. The address to send any inquiry to is: prosoft@epic.net The mailing address is: Pro Solutions Software 27 School St., Grace Village, 1115 QC, Philippines Tel: (632) 812-7995 or (632) 365-1751 I have not tested this software myself but hope to get it sometime. Goodluck. Sam.
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>From root@crcnis1.unl.edu Mon Jul  8 10:47 EDT 1996
Date: Mon, 8 Jul 1996 09:34:53 -0500
Message-Id: <199607081434.AA24201@crcnis1.unl.edu>
Subject: AGMODELS-L digest 539

Contents:
unsubscribe (warf@compusmart.ab.ca (Western Aquatic Research Facility))



Date: Sun, 7 Jul 1996 15:48:11 GMT From: warf@compusmart.ab.ca (Western Aquatic Research Facility) Subject: unsubscribe unsubscribe
End of Digest
>From root@crcnis1.unl.edu Tue Jul  9 10:49 EDT 1996
Date: Tue, 9 Jul 1996 09:35:40 -0500
Message-Id: <199607091435.AA17147@crcnis1.unl.edu>
Subject: AGMODELS-L digest 540

Contents:
 (Huang Neng Geng <asb67036@ait.ac.th>)
RE: Artificial neural network (ypachepsky@asrr.arsusda.gov)



Date: Sun, 9 Jul 1995 22:39:27 +0700 (GMT+0700) From: Huang Neng Geng <asb67036@ait.ac.th> Subject: Dear Friends, I am a new commer. I am a master student in Asian Institute of Technology, Bangkok, Thailand, majored in aquaculture. I am interested in neural network and it's application in aquaculture and environment, especially in environment impact assessment of aquaculture. I hope it will become the topic of my master thesis. Whould you any one please give me some information such as list of books and reference. Thanks a lot. Huang reply email address: asb967036@rccvax.ait.ac.th
Date: Mon, 8 Jul 96 13:31:42 PDT From: ypachepsky@asrr.arsusda.gov Subject: RE: Artificial neural network Dear Huang You might want to check the following books and papers: Alexander, I., and H. Morton. 1990. An introduction to neural computing. Chapman and Hall, London. Deck, S.H., C.T. Morrow, P.H. Heinemann, H.J. Sommer III. 1995. Comparison of a neural network and traditional classifier for machine vision inspection of potatoes. Applied Engineering in Agriculture, Vol. 11(2):319-326. Elizondo, D.A., R.W. McClendon, and G. Hoogenboom. 1994. Neural network models for predicting flowering and physiological maturity of soybeans. Transactions of ASAE Vol. 37(3):981-988. Gimblett, R.H. and G.L. Ball. 1995. Neural Network architectures for monitoring and simulating changes in forest resource management. AI Applications, Vol. 9(2)103-123. Guan, T.B, and G.Z. Gertner. 1995. Modeling individual tree survival probability with a random optimization procedure: An artificial nerual network approach. AI Applications Vol. 9(2):39-52. Joerding, W.H., Ying Li, and D.L. Young. 1994. Feedforward neural network estimation of a crop yield response function. J. Agric. and Applied Econ. Vol. 26(1):252-263. Lein, J.K., 1995. Mapping environmental carrying capacity using an aritificial neural network: a first experiment. Land Degradation & Rehabilitation, Vol.(6):17-28. Maren, A.J., C.T.Harston, and R.M.Pap. 1990. Handbook of Neural Computing Applications. Academic Press, San Diego. McCord N.M., and W.T.Illingworth. 1990. A Practical Guide to Neural Nets. Addison -Wesley, Reading, Mass. Pachepsky Ya. A., D. Timlin, and G. Varallyay. 1996. Artificial neural networks to estimate soil water retention from easily measurable data. Soil Science Soc. Am. J, 60:727-733. Pattie, D.C., and Glenn Haas. 1996. Forecasting Wilderness Recreation and Use: Neural Network vs. Regression. AI Applications, Vol.10(1):67-74 You also might try the Internet resources on artificial intelligence starting with http://www.ieee.org/nnc/research/othernnsoc.html With he best regards Yakov Pachepsky ---------------Original Message--------------- Dear Friends, I am a new commer. I am a master student in Asian Institute of Technology, Bangkok, Thailand, majored in aquaculture. I am interested in neural network and it's application in aquaculture and environment, especially in environment impact assessment of aquaculture. I hope it will become the topic of my master thesis. Whould you any one please give me some information such as list of books and reference. Thanks a lot. Huang reply email address: asb967036@rccvax.ait.ac.th ----------End of Original Message---------- ------------------------------------- Name: yakov pachepsky E-mail: ypachepsky@asrr.arsusda.gov (yakov pachepsky) Remote Sensing and Modeling Laboratory USDA:ARS:BA:NRI:RMSL Bldg 007 Rm 008 BARC-WEST Beltsville, MD 20705 Tel 301-504-74-68 Fax 301-504-58-23 -------------------------------------
End of Digest
>From root@crcnis1.unl.edu Wed Jul 10 10:50 EDT 1996
Date: Wed, 10 Jul 1996 09:36:24 -0500
Message-Id: <199607101436.AA10663@crcnis1.unl.edu>
Subject: AGMODELS-L digest 541

Contents:
unsubscribe (dhale <dhale@clark.edu>)
unsubscribe (dhale <dhale@clark.edu>)
unsubscribe (dhale <dhale@clark.edu>)
unsubscribe (dhale <dhale@clark.edu>)
introduction ("Abraham Singels" <ABRAM@landbou.uovs.ac.za>)
Agmodels: Where do I begin? ("Jack McKenzie" <mckenzie@ilink.nis.za>)
Re: Agmodels: Where do I begin? (mckinion@marlin.csrumsu.ars.ag.gov (James McKinion))



Date: Wed, 10 Jul 1996 01:51:31 -0700 (PDT) From: dhale <dhale@clark.edu> Subject: unsubscribe unsubscribe
Date: Wed, 10 Jul 1996 01:52:18 -0700 (PDT) From: dhale <dhale@clark.edu> Subject: unsubscribe unsubscribe agmodel-l dhale
Date: Wed, 10 Jul 1996 01:53:18 -0700 (PDT) From: dhale <dhale@clark.edu> Subject: unsubscribe signoff agmodel-l dhale
Date: Wed, 10 Jul 1996 01:54:21 -0700 (PDT) From: dhale <dhale@clark.edu> Subject: unsubscribe signoff agmodels-l dhale@clark.edu
Date: Wed, 10 Jul 1996 14:11:13 GMT2 From: "Abraham Singels" <ABRAM@landbou.uovs.ac.za> Subject: introduction Dear Agmodellers I am a new subscriber to this list. A brief introduction of myself as requested: Areas of interest : Wheat and maize modelling, application of models to crop forecasting, agricultural risk management and irrigation planning. Work mainly with the PUTU family of models developed by our department (Prof De Jager et. al.). Consist of N and non-N versions of wheat and maize, a generic waterbalance model and a model for natural grassland. (See e.g. Agric Systems 37: 25-38) Currently struggling to develop a simple, accurate simulation of the waterbalance above water tables of varying depth over time. Investigating the benefit of climate forecasts to crop production using models. Abraham Singels Departement of Agrometeorology University of the Orange Free State P.O. Box 339 Bloemfontein 9300 South Africa Tel : 0027 (0)51 4012656 Fax : 0027 (0)51 4480692 E-mail : abram@landbou.uovs.ac.za
Date: Wed, 10 Jul 1996 15:10:46 +0000 From: "Jack McKenzie" <mckenzie@ilink.nis.za> Subject: Agmodels: Where do I begin? A rather broad (and dumb) question: where does one begin looking for information about agmodelling? A sort of "Idiots Introduction to Agricultural Modelling" would be useful. I am a horticulturist with little/no agmodelling experience. It appears to be more the domain of crop scientists, pathoglogists, economists and foresters (alright, don't shoot). ********************************************************* Jack McKenzie <mckenzie@ilink.nis.za> Personal: http://www.nis.za/homepgs/mckenzie/home.htm S.A. AGRIWEB: http://www2.nis.za/jm/agriweb.htm S.A. JOBWEB: http://www2.nis.za/jm/jobweb.htm
Date: Wed, 10 Jul 1996 07:44:00 -0600 From: mckinion@marlin.csrumsu.ars.ag.gov (James McKinion) Subject: Re: Agmodels: Where do I begin? >A rather broad (and dumb) question: where does one begin looking for >information about agmodelling? Jack, You might find the following references helpful: Wisiol,K and Hesketh. Plant Growth Modeling for Resource Management. Volume I, Current Models and Methods. CRC Press, Inc. Boca Raton, FL. 1987. Wisiol,K and Hesketh. Plant Growth Modeling for Resource Management. Volume II, Quantifying Plant Processes. CRC Press, Inc. Boca Raton, FL. 1987. Whisler, F. D. et. al. Crop simulation Models. IN: Advances in Agronomy, Volume 40. Academic Press. 1986 Briones, A. A. and Briones, A. M. An Introduction to the Elements of Agrotechnology Transfer. University of the Philipine Los Banos College, Laguna, Phillipines. 1991. These contain many references to other works and should prove a useful introduction to the types of crop (plant) modeling that have been accomplished. James Dr. James M. McKinion Ph. 601-324-4375 USDA-ARS FAX 601-324-4371 Crop Simulation Research Unit Email mckinion@csrumsu.ars.ag.gov P. O. BOX 5367 Mississippi State, MS 39762 USA
End of Digest
>From root@crcnis1.unl.edu Thu Jul 11 10:51 EDT 1996
Date: Thu, 11 Jul 1996 09:37:13 -0500
Message-Id: <199607111437.AA00782@crcnis1.unl.edu>
Subject: AGMODELS-L digest 542

Contents:
Re: Agmodels: Where do I begin? ("Don Wauchope" <don@tifton.cpes.peachnet.edu>)
Re: Agmodels: Where do I begin? ("Donald MacKerron" <dmacke@scri.sari.ac.uk>)



Date: Wed, 10 Jul 1996 10:49:45 +0000 From: "Don Wauchope" <don@tifton.cpes.peachnet.edu> Subject: Re: Agmodels: Where do I begin? > Subject: Agmodels: Where do I begin? Some basicl references in the "soil and water" area, with a bias toward agrichemicals and water quality: DeCoursey, D. G. (Ed.) Proceedings of the International Symposium on water Quality Modeling of Agricultural Non-Point Sources, in 2 vols. USDA-Agricultural Research Service publ. ARS-81, 1990, 875 pp. I don't know how to tell you how to get a copy... W. Knisel, CREAMS, a field scale model for chemicals, runoff and erosion from agricultural management systems, USDA Conserv. Res. Rept. No 26 (1980). Dated but still a prime source on most processes. H.H. Cheng (Ed), Pesticides in the Soil Environment--Processes, Impacts, and Modeling, Madison, WI, Soil Science Society of America Book Series No. 2 (1990). Very strong, very authoritative. A classic. Cohen, S.Z, R.D. Wauchope, A. W. Klein, C. V. Eadsforth and R. Graney "Offsite transport of pesticides in water-- mathematical models of pesticide leaching and runoff" J. Pure Applied Chem. 67: 2109-2148. Will be happy to send you a copy if interested. But this field is changing so rapidly it is already out of date. Don Wauchope phone (912) 386-3892
Date: Thu, 11 Jul 1996 07:49:23 GMT From: "Donald MacKerron" <dmacke@scri.sari.ac.uk> Subject: Re: Agmodels: Where do I begin? Dear Jack, There are very many reviews on this subject. However, if you want to see the range of approaches and the range of sophistication that can be used on just a single crop then you could find the two following books interesting: 1. Modelling and Parameterization of the Soil-Plant-Atmosphere System: A Comparison of Potato Growth Models. Editors - P Kabat, B Marshall, B J van den Broek, J Vos, H van Keulen. Wageningen Pers, Wageningen, 1995. 513 pp. ISBN 90-74134-16-5 In this book eight different models ranging in complexity were compared in a modelling case study. Data sets for the comparison case study were provided by the Scottish Crop Research institute and focussed primarily on water balance, potential yield, water-constrained yield, and nitrogen-constrained yield. 2. Potato Ecology and Modelling of Crops under Conditions limiting Growth. (Proceedings of the Second International Potato Modelling Conference held in Wageningen 17 - 19 May 1994). Editors - A J Haverkort and D K L MacKerron. Kluwer Academic Publishers, Dordrecht, 1995. 379 pp. ISBSN 0-7923-3412-4. (Current issues in production Ecology Volume 3.) In this book the effects of constraints on growth are considered in 'paired' chapters, the first dealing with the physiology or the pathology involved and the second with progress made in modelling the effects. it includes examples of the use of models in practice (decision support systems0 and in science (modelling sustainability and agro0ecological zoning). Have a good read! Donald MacKerron Best wishes, Donald MacKerron Tel: +44 (0)1382 562731 FAX: +44 (0)1382 562426 E-mail: D.MacKerron@scri.sari.ac.uk
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>From root@crcnis1.unl.edu Fri Jul 12 10:51 EDT 1996
Date: Fri, 12 Jul 1996 09:37:25 -0500
Message-Id: <199607121437.AA19253@crcnis1.unl.edu>
Subject: AGMODELS-L digest 543

Contents:
NEEDED:  one slightly used Turf growth model ("Ken Rojas" <Kenr@gpsr.colostate.edu>)
RE: NEEDED: one slightly used Turf growth model  (ypachepsky@asrr.arsusda.gov)



Date: Thu, 11 Jul 1996 17:58:02 +0000 From: "Ken Rojas" <Kenr@gpsr.colostate.edu> Subject: NEEDED: one slightly used Turf growth model Howday- As the subject says, I'm looking for a turf growth model. We are branching out on our simulations, and would like to link a turf model into our system. The system that it will be included in is the RZWQM (Root Zone Water Quality Model), which is a process based simluation model. Although, the turf model doesn't have to be process based, an empirical model will suffice. If the latter is available please provide source of information as to application zone. Please send replies to my personal email address NOT to AGMODELS-L, there's enough extraneous traffic already. Thanks, Ken ===================================================== Ken Rojas -- CS Catagory 6 Interests in: Hydrology / Environmental Physics Great Plains System Research Unit - USDA-ARS 301 S. Howes St. P.O. Box E Fort Collins, CO 80522 phone: (970) 490-8326 // fax : (970) 490-8310 E-mail: KENR@GPSR.COLOSTATE.EDU ATTMail: A03KROJAS =====================================================
Date: Thu, 11 Jul 96 20:16:01 PDT From: ypachepsky@asrr.arsusda.gov Subject: RE: NEEDED: one slightly used Turf growth model Basil, Toni was right? Yakov ---------------Original Message--------------- Howday- As the subject says, I'm looking for a turf growth model. We are branching out on our simulations, and would like to link a turf model into our system. The system that it will be included in is the RZWQM (Root Zone Water Quality Model), which is a process based simluation model. Although, the turf model doesn't have to be process based, an empirical model will suffice. If the latter is available please provide source of information as to application zone. Please send replies to my personal email address NOT to AGMODELS-L, there's enough extraneous traffic already. Thanks, Ken ===================================================== Ken Rojas -- CS Catagory 6 Interests in: Hydrology / Environmental Physics Great Plains System Research Unit - USDA-ARS 301 S. Howes St. P.O. Box E Fort Collins, CO 80522 phone: (970) 490-8326 // fax : (970) 490-8310 E-mail: KENR@GPSR.COLOSTATE.EDU ATTMail: A03KROJAS ===================================================== ----------End of Original Message---------- ------------------------------------- Name: yakov pachepsky E-mail: ypachepsky@asrr.arsusda.gov (yakov pachepsky) Remote Sensing and Modeling Laboratory USDA:ARS:BA:NRI:RMSL Bldg 007 Rm 008 BARC-WEST Beltsville, MD 20705 Tel 301-504-74-68 Fax 301-504-58-23 -------------------------------------
End of Digest
>From root@crcnis1.unl.edu Sat Jul 13 16:33 EDT 1996
Date: Sat, 13 Jul 1996 09:37:48 -0500
Message-Id: <199607131437.AA03758@crcnis1.unl.edu>
Subject: AGMODELS-L digest 544

Contents:
Job Position Open - Research Leader of USDA-ARS NSERL (Dennis C Flanagan <flanagan@ecn.purdue.edu>)



Date: Fri, 12 Jul 1996 15:48:31 -0500 (EST) From: Dennis C Flanagan <flanagan@ecn.purdue.edu> Subject: Job Position Open - Research Leader of USDA-ARS NSERL JOB OPEN - RESEARCH LEADER - NATIONAL SOIL EROSION RESEARCH LABORATORY For your information, the Research Leader's position at the USDA-ARS National Soil Erosion Research Laboratory is currently open and applications are being sought. Closing date for applications for the position is August 2, 1996. The position is listed as Interdisciplinary: Supervisory Soil Scientist/ Soil Physicist/Agricultural Engineering. Salary Range: $61348 - $93,811 per year. This is a permanent full-time position at the GS 14/15 level. The incumbent will be the Research Leader of the National Soil Erosion Research Laboratory (NSERL). Specifically, the incumbent will plan and conduct research to: (1) discover new knowledge and develop new science for soil erosion, (2) improve soil erosion prediction for the United States' crops, soils, climates, land uses and topography, and (3) develop and evaluate conservation and management practices for the control of soil erosion. If you or someone you know would be interested in applying for the position, see the position description on the WWW at: http://www.ars.usda.gov/afm/d6n105.html or for application forms and more detailed information, contact: submit applications to: Cheryl Brown Yolanda G. Wilson USDA, ARS, MWA USDA-REE-ARS Location Support Staff Human Resources Division 1196 Building SOIL 6305 Ivy Lane, Room 322 West Lafayette, IN 47907-1196 Greenbelt, MD 20770-1435 Phone: (317) 494-9726 FAX: (317) 494-1705 email: cheryl@ecn.purdue.edu
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>From root@crcnis1.unl.edu Mon Jul 15 09:50 EDT 1996
Date: Mon, 15 Jul 1996 08:35:58 -0500
Message-Id: <199607151335.AA22481@crcnis1.unl.edu>
Subject: AGMODELS-L digest 545

Contents:
RE: Agmodels: Where do I begin? ("Scott M. Swinton" <swintons@pilot.msu.edu>)



Date: Mon, 15 Jul 1996 09:33:37 -0600 (CST) From: "Scott M. Swinton" <swintons@pilot.msu.edu> Subject: RE: Agmodels: Where do I begin? On modeling references, Jack McKenzie's query has gotten a number of replies, many quite specific to certain research areas. For general background, there are several books on agricultural simulation modeling written in the 1970's and early 1980's (notably Dent & Blackie's "Systems Simulation in Agriculture (1979)). But my favorite overview article is still: G.M. van Dyne & Z. Abramsky, "Agricultural systems Models and Modelling: An Overview." Chapter 2 in G.E. Dalton's _Study of Agricultural Systems_ Applied Science, London, 1975. It gives a good typology of ag systems models in the first dozen pages, before launching into an exhaustive review of the literature at that point in time. --Scott Swinton *********************************************************************** Scott Swinton E-mail: swintons@pilot.msu.edu Dept. of Agricultural Economics Phone: 517-353-7218 Michigan State University Fax: 517-432-1800 E. Lansing, MI 48824-1039 ***********************************************************************
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>From root@crcnis1.unl.edu Tue Jul 16 20:43 EDT 1996
Date: Tue, 16 Jul 1996 19:29:38 -0500
Message-Id: <199607170029.AA20184@crcnis1.unl.edu>
Subject: AGMODELS-L digest 546

Contents:
Model for Coliform (rama@brcsun0.tamu.edu (Ramanarayanan Tharacad))
 (Han-e Zhou <han@ksu.edu>)
 (setna@starnet.net.ar)
Neural networks ("Abraham Singels" <ABRAM@landbou.uovs.ac.za>)
Re: your mail (Han-e Zhou <han@ksu.edu>)
strawberry model (Han-e Zhou <han@ksu.edu>)



Date: Sat, 13 Jul 1996 17:30:47 -0500 From: rama@brcsun0.tamu.edu (Ramanarayanan Tharacad) Subject: Model for Coliform We have an interesting problem in our hand. We are attempting to analyze the effect of a new animal carcass handling plant on the health of the recieving river system. The waster water from the plant will be irrigated to a coastal Bermuda grass field. The runoff from the field will get into the stream and eventually into the river system. I came across some models to transport of coliform in the stream (e.g. QUAL2E), but we are looking for a model to predict the 'edge-of-the-field' loading to the stream from the Bermuda field. Any leads or directions are most welcome. Thanks. T.S. Ramanarayanan
Date: Mon, 15 Jul 1996 16:00:32 -0500 (CDT) From: Han-e Zhou <han@ksu.edu> Subject: Dear Agmedellers, Does anyone have information about strawberry model or other horticulture crop models? Any help would be appreciated. Han-E Zhou Horticulture Department Plant Science Center Kansas State University
Date: Mon, 15 Jul 1996 21:27:55 +0300 From: setna@starnet.net.ar Subject: PLS UNSUBSCRIBE SETNA@STARNET.NET.AR
Date: Tue, 16 Jul 1996 12:07:46 GMT2 From: "Abraham Singels" <ABRAM@landbou.uovs.ac.za> Subject: Neural networks Hi everybody I am interested in looking into the use of neural network methods in crop modeling (especially crop forecasting ). Is there any suggestions on an introductory publication on the topic? I am also looking for an easy to use, freely available software package (preferably available from the Web or FTP) to explore the possibilities of Neural networks. Thanks. Abraham Singels Departement of Agrometeorology University of the Orange Free State P.O. Box 339 Bloemfontein 9300 South Africa Tel : 0027 (0)51 4012656 Fax : 0027 (0)51 4480692 E-mail : abram@landbou.uovs.ac.za
Date: Tue, 16 Jul 1996 12:29:59 -0500 (CDT) From: Han-e Zhou <han@ksu.edu> Subject: Re: your mail help Does anyone have information about strawberry model or other horticulture crop models? Any help would be appreciated. Han-E Zhou Horticulture Department Plant Science Center Kansas State University
Date: Tue, 16 Jul 1996 15:59:32 -0500 (CDT) From: Han-e Zhou <han@ksu.edu> Subject: strawberry model help Does anyone have information about strawberry model or other horticulture crop models? Any help would be appreciated. Han-E Zhou Horticulture Department Plant Science Center Kansas State University
End of Digest
>From root@crcnis1.unl.edu Wed Jul 17 20:42 EDT 1996
Date: Wed, 17 Jul 1996 19:30:12 -0500
Message-Id: <199607180030.AA04732@crcnis1.unl.edu>
Subject: AGMODELS-L digest 547

Contents:
Re: Neural networks (Daniel Fuka <dan@quetzalcoatl.com>)
 Albert = FYI =[ERic] Neural networks -Reply (Eric Champagne <CHAMPAGNEE@em.agr.ca>)



Date: Tue, 16 Jul 1996 20:41:50 -0600 From: Daniel Fuka <dan@quetzalcoatl.com> Subject: Re: Neural networks Hi there, A fairly well rounded software package that is available through the net is the Stuttgart Neural Network Simulator. It is available at: http://www.informatik.uni-stuttgart.de/ipvr/bv/projekte/snns/snns.html It is supported on several different platforms (UNIX based) and there is a batch job builder for MS windows that allows you to work on a PC and throw the jobs onto your machine of choice. There is also a nice web users manual linked to the pages so you can determine if the software is right for you without having to load and fiddle with it. If you recieve any other information on freely available NN software, please forward it to me. I am sending this reply to the list so that others who are interested in NN/AI can wander through the pages. Hope this is of some help, Daniel R. Fuka Quetzal Computational Associates, Inc. dan@quetzalcoatl.com
Date: Wed, 17 Jul 1996 09:06:09 -0400 From: Eric Champagne <CHAMPAGNEE@em.agr.ca> Subject: Albert = FYI =[ERic] Neural networks -Reply Albert - I thought I would pass this along to you , if you haven't already seen it. Eric C. >>> Daniel Fuka <dan@quetzalcoatl.com> 07/16/96 10:pm >>> NEURAL NETWORKS Hi there, A fairly well rounded software package that is available through the net is the Stuttgart Neural Network Simulator. It is available at: http://www.informatik.uni-stuttgart.de/ipvr/bv/projekte/snns/snns.html It is supported on several different platforms (UNIX based) and there is a batch job builder for MS windows that allows you to work on a PC and throw the jobs onto your machine of choice. There is also a nice web users manual linked to the pages so you can determine if the software is right for you without having to load and fiddle with it. If you recieve any other information on freely available NN software, please forward it to me. I am sending this reply to the list so that others who are interested in NN/AI can wander through the pages. Hope this is of some help, Daniel R. Fuka Quetzal Computational Associates, Inc. dan@quetzalcoatl.com
End of Digest
>From root@crcnis1.unl.edu Thu Jul 18 20:51 EDT 1996
Date: Thu, 18 Jul 1996 19:38:47 -0500
Message-Id: <199607190038.AA27112@crcnis1.unl.edu>
Subject: AGMODELS-L digest 548

Contents:
Job announcement (PhD) (Joachim Benz <benz@wiz.uni-kassel.de>)
NLEAP Model with SI Units (bechini@imiucca.csi.unimi.it (Luca Bechini))



Date: Thu, 18 Jul 1996 16:25:32 +0200 (GMT+0200) From: Joachim Benz <benz@wiz.uni-kassel.de> Subject: Job announcement (PhD) Position available ------------------ In the research project "Synthese und Konsistenzpruefung komplexer modular-hierarchischer Oekosystemmodelle" (more information you can find at: http://dino.wiz.uni-kassel.de/ecobas.html) we offer 1 position for PhD students (BAT IIa/2). The position is initially limited to 1.5 years. This research project is a cooperation between the university of Kassel, faculty of agriculture, international rural development and environmental protection and the university of Rostock, faculty of computer science, both in Germany. The job location is Witzenhausen (a satellite campus of the university of Kassel), some 30km east of Kassel. Tasks within the project include: - development of algorithms for the synthesis and the consistency check of complex mathematical models (in cooperation with the team in Rostock), - optimization of the design of the ECOBAS database (database for the documentation of mathematical formulations of ecological processes), - development of interfaces for the tools for model-construction and consistency check and - maintenance and extension of the ECOBAS database Required qualifications: A completed degree in computer science or in a ecology related discipline. Experience with mathematical modelling in ecology and/or databases is desirable as its familiarity with UNIX. Good knowledge of German language is necessary. Applications should be sent until 1. September 1996 to: Dr. Joachim Benz Universitaet Gesamthochschule Kassel Fachbereich 11 Nordbahnhofstr. 1a D-37213 Witzenhausen Germany Tel.: +49-5542-98-1560 Fax: +49-5542-98-1552 Email: benz@wiz.uni-kassel.de --------------------------------------------------------------------- The university of Kassel is committed to increase the number of women within its staff. Therefore women are encouraged to apply for the offered positions. With equal qualifications disabled applicants will be preferred. ---------------------------------------------------------------------
Date: Thu, 18 Jul 1996 17:48:46 +0100 From: bechini@imiucca.csi.unimi.it (Luca Bechini) Subject: NLEAP Model with SI Units Some questions about NLEAP model: 1. Does anybody know if a version with SI Units of NLEAP model has been released? The version of the model that is described in the book "Managing Nitrogen for Groundwater Quality and Farm Profitability" (ed. by Follet R.F., Keeney D.R. and Cruse R.M., SSSA, 1991) uses Acceptable Unit. 2. Where is it possible to find it? (e.g. some Web site?). Thank you very much Luca ======================================== Luca Bechini, PhD student Institute of Agronomy Via Celoria, 2 Faculty of Agriculture 20133 MILANO University of Milan ITALY tel + 39 - 2 - 70.600.164 fax + 39 - 2 - 70.633.243 e-mail: bechini@imiucca.csi.unimi.it ========================================
End of Digest
>From root@crcnis1.unl.edu Fri Jul 26 09:16 EDT 1996
Date: Fri, 26 Jul 1996 08:02:20 -0500
Message-Id: <199607261302.AA12697@crcnis1.unl.edu>
Subject: AGMODELS-L digest 549

Contents:
CFP: Ecological Goal Functions: workshop and e-mail conference (Meinolf Asshoff <MEINOLF@pz-oekosys.uni-kiel.d400.de>)



Date: Fri, 26 Jul 1996 14:50:08 +0200 From: Meinolf Asshoff <MEINOLF@pz-oekosys.uni-kiel.d400.de> Subject: CFP: Ecological Goal Functions: workshop and e-mail conference CALL FOR PARTICIPATION WORKSHOP Unifying Goal Functions, August 30th - September 4th Salzau The Project Center for Ecosystem Research at the University of Kiel will host an international workshop to discuss and evaluate the current status of the debate on basic principles of ecosystem organization: the role of ecological goal functions in theory and ecosystem management. On http://www.pz-oekosys.uni-kiel.de/~maren-l/ you can get all the informations about the workshop. The web page contains an invitation to participate in the e-mail conference which will provide some input to the discussion and the workshop program. Any person who is interested can submit contributions to the workshop coordinator. The incoming mail will be made available on the Forum page. Best regards Maren Leupelt (Workshop Secretariat) Maren Leupelt, Project Center for Ecosystem Research Schauenburgerstr. 112, D - 24118 Kiel FAX: 0431/880-4083 --- Meinolf Asshoff meinolf@pz-oekosys.uni-kiel.d400.de Ecosystem Research Centre http://www.pz-oekosys.uni-kiel.de University of Kiel Schauenburgerstr. 112 "If I had a completely new idea, D-24118 Kiel I would not be able to understand it" GERMANY (Piaget)
End of Digest
>From root@crcnis1.unl.edu Wed Jul 31 01:37 EDT 1996
Date: Wed, 31 Jul 1996 00:25:29 -0500
Message-Id: <199607310525.AA20122@crcnis1.unl.edu>
Subject: AGMODELS-L digest 550

Contents:
Erosion indicators (Peter Grace <Peter.Grace@adl.soils.csiro.au>)



Date: Wed, 31 Jul 1996 14:39:16 +0930 (CST) From: Peter Grace <Peter.Grace@adl.soils.csiro.au> Subject: Erosion indicators Hi all, We are developing a series of indicators for land degradation and whilst we can use algorithms from EPIC and Perfect (for example), we are trying to get hold of some simplified code for erosion. Quantification is not essential, moreso ratings or developing an index. I would appreciate any words of wisdom from people in a similar situation. Peter Grace Land Assessment and Policy Unit CRC Soil and Land Management and Dept Soil Science, U. Adelaide PMB 2 Glen Osmond South Australia 5064
End of Digest
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