In update 46 of 12 June 2010 the Rainoff program for rainfall-runof relations simulated by a non-linear
reservoir with multiple outlets was modernized and an occasional problem of folder allocation under
Windows Vista was cured. On 10 July 2010 the guided input procedure of the SahysMod program was debugged
and extended as a result of comments made by Francesca Verones. On 20 July the procedure was further
streamlined and the network map was improved.
In update 45 of 05 April 2010 the a provision was made for downloading the SATEM and SURDEV publications.
In update 44 of 19 December 2009 the graphics part of the CumFreq, EnDrain, RainOff, SegReg and WellDrain
programs were given a new appearance.
In update 43 of 15 October 2009, all software programs were given extended explanations in
the status bar. The program EnDrain was given a floating figure to explain entrance
resistance. Thanks to the comments of Mrs. Birgit, the program SegReg was corrected for
an error of the Y-axis label in the second graph of calculated versus observed values.
By the end of October five downloadable PDF files were added to the
reports page while on 5 November the page on
consultancy reports was given more download options. The new
files refer water management and soil salinity in alluvial fans or inland delta's.
In update 42 of 12 February 2009 the programs SahysMod, SegReg, and Cumfreq have been updated
while minor inconveniences were removed.
On 11 April 2009 Segreg was given een extended list of explanations of output symbols.
On 29 April 2009 WellDrain was updated and an inconsistency in use of symbols was removed
thanks to comments of Richard Bartram.
There is now a floating explanatoray figure. The name WellDrainW was replaced by WellDrain.
On 30 April 2009 the same work was done on EnDrain.
On 21 May 2009 the CumFreq graphics for return period were improved.
In update 41 of 18 October 2008 the SahysModW program was adjusted to accommodate
random numbering of the nodes in the polygonal network.
On 23 October, the saving of the input files to the disc was brought under Windows/Delphi
so that the former DOS/TurboPascal format restrictions of file names and directory/folder
names were eliminated. The new program, version 1.3.1, is now called SahysMod instead of
SahysModW.
On 22 November the guided procedure for construction of the polygonal network was improved
thanks to the efforts of Mr. Tsegay Fithanegest.
In update 40 of 27 April 2008 the full screen output graphics of the SahysModW program,
which were based on DOS (TurboPascal), have been brought under Windows (Delphi) because
the graphics are not supported by Windows Vista. The new SahysModW version 1.1 is now
available for download.
All previous DOS versions of the CumFreq, SegReg, EnDrain, WellDrain, RainOff,
SaltMod and SahysMod programs have been removed and are no longer available.
On 15 May 2008 the SahysModW version 1.1 has been replaced by version 1.2 with
improved network making functions. A version with a polygonal network of more than
300 nodes can now be made available on request.
In update 39 of 10 December 2007, thanks to comments of Mr. Javier Sassi from, the SahysModW
program was adjusted to overcome certain inconveniences. On the FAQ's page a paper was
included on acid sulfate soils in Pulau Petak, South Kalimantan, Indonesia. In the list
of publications a download was given of a report on irrigation improvement in Egypt,
including water/salt balances and other information.
In update 38 of 20 November 2007 the SahysModW program was corrected for unforeseen
freezes, thanks to comments of Mr. M.Madyaka. On the FAQ's page questions on tidal irrigation
were dealt with.
In update 37 of 9 September 2007 Mr. Michael Siek of UNESCO-IHE the
suggestions for improvement of CumFreqW handling a larger data set, up to
2500 data, and for adding a threshold (cutoff value) was followed.
On 2 October, the CumFreq and SegReg programs were given the option to
copy and paste spreadsheet data. On 15 October, the program SegReg was given
improved graphics thanks to the comments of Mr. Sergio Alonso Oroza.
Further all windows programs (CumFreqW, EnDrainW, RainOffW, SaltModW, SahysModW,
SegRegW and WellDrainW) were improved regarding a dot/comma decimal separator
problem. Thanks Sergio for calling my attention to this.
In update 36 of 28 June 2007 the issue of "waterlogging" was added on the FAQ's page
(frequently asked questions).
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