AGMODELS-L: 199607XX
is the compilation of discussion during Jul 96
via AB4EL Web Digests @ 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.
End of Digest
>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
End of Digest
>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
End of Digest
>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
***********************************************************************
End of Digest
>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
Prepared by Steve Modena, AB4EL
Suggestions and comments to: modena@SunSITE.unc.edu