On ModelWorks
Contents
1. The second disk is organized for development work Complement it with the compiler from the MacMETH distribution disk and you have a fully functional ModelWorks If you have a hard disk simply copy the content of this disk into a folder on your hard disk and you are all set to O eAlthough there are no version conflicts to older ModelWorks libraries of this release it is recommended to recompile the model definition programs in order to warrant correct functioning of models The latter is especially important if your model definition programs use some of the newer features which were not yet present in release 1 1 On ModelWorks READ ME Page 17 Sat 1 Jul 2006 Release Notes for Version 1 3 October 1989 The new version is fully compatible with previous versions but offers many new features in particular via the client interface to fully support batch simulations e g you can dump the graph onto the stash file for later inspection The client interface of ModelWorks Version 1 3 is fully upward compatible same symbol files with the previous versions However this interface has been substantially extended For Modula 2 programmers Please don t ask us how we accomplished this This means that no ModelWorks model definition program made with ModelWorks 1 1 needs to be recompiled or changed in any way in order to work with version 1 3 Note this is not true for the release 1 2 to be on the safe side recompile your models made with ve2. ModelWorks without a manual we also avoid reading boring manuals modeling and simulation are based on concepts which require a bit of study We made lots of efforts to provide you a manual worth reading The following explanations on the manual may help you to decide how to use the ModelWorks manual It consists mainly of the following four parts 1 The Tutorial explains the basic concepts and features of ModelWorks together with a step by step guided tour to learn the elementary usage of ModelWorks The Tutorial is a MUST for everybody interested in using ModelWorks 2 For any serious modelling work to be done with ModelWorks e g if you have decided to use it throughout a research project such as your dissertation you should also read the second section Theory It explains all theoretical concepts ModelWorks is based on This section is highly recommended for researchers planning to use ModelWorks in a large research projects 3 The third section Reference contains a detailed description of all features of ModelWorks It is only to be consulted as needs arise 4 The fourth section Appendix contains first a most useful section featuring sample models from very basic to rather advanced complex models full listings featuring every detail Again this section is highly recommended for researchers planning to use ModelWorks in their research projects This section contains also detailed explanations of auxiliary libraries e g mathemat
3. elt supports now multi level programming as for instance needed by the RAMSES shell RAMSES stands for Research Aids for Modeling and Simulation of Environmental Systems For instance with this new version it is now possible to call a sub program which contains in its body another call to RunSimMaster Previous versions of ModelWorks did not allow to call RunSimMaster from within RunSimMaster This offers the possibility to load respectively unload dynamically several layers of a model e g sub models one on top of the other into the simulation environment The RAMSES shell offers the following five sessions Programming Modeling Experiment Definition Simulation and Post simulation Analysis RAMSES makes extensively use of multi level programing This allows for particular efficient model loading Because of the substantial advantages use if possible the RAMSES shell to run ModelWorks On ModelWorks READ ME Page 15 Sat 1 Jul 2006 Release Notes for Version 2 0 May 1990 This version is upward compatible with the previous version 1 3a from January 1990 It also uses the Dialog Machine version 2 0 and MacMETH version 2 6 elt offers the new possibility declare models and model objects as well as to remove models and model objects dynamically Thus a stage for interactive modelling is set Note that this implies that it is now possible to call RunSimMaster from SimMaster without passing as actual parameter the procedure which declares
4. s tm ta Sim 6 2837 Current lime 724 0 xDot Yie RTt temp x interpolates growth rate for any temp While running this model you may edit the function RTt as you can modify a value of any ordinary model parameter E g you may want to change the last data pair 50 0 0 25 to temp 60 0 C and a growth rate gr 0 1 This can be easily acchieved by means of the menu command Edit under the added ModelWorks menu TableFunctions just beside the Simulation menu Try it to see it eAll Known bugs have been fixed On ModelWorks READ ME Page 23 Sat 1 Jul 2006 Release Notes for Version 1 0 April 1988 The version has been based on the new version 1 0 of the Dialog Machine This has certain consequences Zoom boxes are available for all windows Module DMFiles supports now fully the HFS Hierarchical file system In particular searching for already existing files is done according to the paths given within the MacMETH User profile and if the file can be found in any of the folders its path is available in the returned file name lt is now possible to use module DMEditFields featuring modeless dialogs Module DM2DGraphs is distributed too You may use it to plot your own charts of the simulation results ModelWorks computes There are less bugs within the new version of the Dialog Machine However the new version works best with the new Finder and Systems files and therefore requires more memory and disk space a
5. the latter is not included before it starts to record the simulation results This allows to store all information and specifications necessary to define a single simulation run or a whole experiment on the stash file In particular different from earlier versions all results produced by an experiment consisting of several simulation runs are now fully written to the stash file Windows can now be arranged in two different modes stacked and tiled The commands are Tile windows and Stack windows and are available under the menu Windows The stacked window arrangement corresponds to the start up arrangement except for the opening of the graph and table window The latter will always be opened by the command Stack windows The command Tile windows will rearrange the windows so that they do no longer overlap and make optimal use of the used computer screen This implies a deactivation of several columns shown in the stacked state just the most important columns are shown i e for all objects just the identifiers and the current values for models the integration method for state variables the initial values for parameters their values and for monitoring variables the currently activated monitoring The actual tile arrangement varies from screen to screen Neither tiling nor stacking of the windows will affect the current values of the model objects different from menu command Reset all in previous versions which was a mean to rearrange
6. the windows to the original start up arrangement but which also implied a resetting of all object values The client interface of ModelWorks Version 1 2 is fully upward compatible same symbol files with the previous version 1 1 i e no ModelWorks model definition program made with ModelWorks 1 1 needs to be recompiled or changed in any way in order to work with version 1 2 ModelWorks 1 2 will work on any Macintosh computer with at least 512 KB memory also on the new 68030 Macs like the Macllx cx and SE 80 with a system version 2 0 or later and Finder version 4 1 or later and is compatible with MacMETH V2 5 1 needed for 68030 Macs and the latest MacMETH V2 6 Simply install this version follow same procedure as described under Release Notes for Version 1 1 and continue your work that s it On ModelWorks READ ME Page 19 Sat 1 Jul 2006 Release Notes for Version 1 1 October 1988 The version is based on the version 1 0 of the Dialog Machine same as ModelWorks V1 0 but uses the new MacMETH 2 5 This new version of ModelWorks offers several new features among others an additional Runge Kutte integration method with variable step length variable coincidence interval length a new module called TabFunc for functions only defined by a set of data pairs to be linearly interpolated during simulation replaces module Tables released with ModelWorks 1 0 It may be used to declare table functions to interpolate values wi
7. ModelWorks 1987 2006 Andreas Fischlin Olivier Roth Dimitrios Gyalistras Markus Ulrich and swiss Federal Institute of Technology Zurich ETHZ Switzerland A Fischlin July 2006 What Is ModelWorks ModelWorks is a modelling and simulation environment programmed in Modula 2 WIRTH 1985 1988 specifically designed to be run interactively on modern working Stations and personal computers and is one of the tools contained in the set RAMSES Research Aids for the Modelling and Simulation of Environmental Systems FISCHLIN 1991 It offers a handy user interface allowing for efficient alterations of model and simulation run parameter values and other specifications interesting for executing simulation experiments Moreover ModelWorks supports modular modelling by featuring a coupling mechanism between submodels and an unrestricted number of so called model objects such as state variables model parameters etc FISCHLIN et al 1994 This allows to build models of any complexity in a well structured way The software imposes no limits on the number of models nor model objects nor on the structure of the model equations or the model architecture limits are solely determined by the physical memory and execution speed of the used computer Yet rigorous mathematical formalisms are available and provide a solid basis despite the pitfalls lurking because of the complexity of the system structure On ModelWorks READ ME Page 1 Sat 1 Ju
8. cPaint etc Installation of client monitoring Installation of a consistency testing procedure It tests before any simulations are started whether parameter settings do satisfy consistency conditions otherwise no simulations are executed Full support for the programming of experiments is now offered via the client interface For instance a sensitivity analysis can be easily programmed with new procedures accessing any value associated with models or model objects i e so called Get and Set procedures to change an integration method of a model e g between runs the initial value of a state variable etc As arule everything you could previously control and edit interactively from within the simulation environment can now also be programmed via the client interface This means full support for lengthy simulations at night no longer requiring attendance by the simulationist Stash filing format is made such that a post run analysis utility can read it for later interactive inspection of simulation results next morning This utility will be available from us on special request Even graphs can be written onto the stash file Implementation restriction graphs are written in the so called RTF format this requires the use of applications like WriteNow Microsoft Word or MacWrite II to open and interprete fully a stash file which contains a graph On ModelWorks READ ME Page 18 Sat 1 Jul 2006 Release Notes for Version 1 2 A
9. construct a phase portrait by changing the initial conditions of state variables during the experiment or to identify model parameters while computing a performance index based on a simulation run The experiment procedure can be freely programmed and contains typically calls to the procedure SimRun The following example shows an experiment used to run several simulations while changing the model parameter p1 from run to run CONST maxRuns 3 VAR runNo 1 maxRuns PROCEDURE MyExperiment BEGIN FOR runNo 1 TO maxRuns DO SimRun END runNo 0 END MyExperiment Whereby the procedure to initialize a run may have been programmed as follows PROCEDURE Init BEGIN CASE runNo OF Le Ole UU if 22 Lee Leo i of DLS 2 0 ELSE END CASE END Init Calling SimRun results in the same action as if the user would have selected the menu command Run simulation under menu Simulation All the program modes apply as well to an experiment as to a simple simulation run however note that the experiment may only be stopped during a simulation run not during another lengthy modeller defined computation such as a parameter identifcation On ModelWorks READ ME Page 25 Sat 1 Jul 2006
10. del definition program uses this new model The growth rate R in the model is not a constant model parameter but varies with the temperature T and is expressed as a function of T The function R T is only determined by some discrete measurements which are contained as data pairs in this table T Teer EAN 0 00 00 T is a sinusoidal forcing function of the form Tit Tm t Tar Sino r28327t 24s 0 where Tm is the mean temperature and Ta is the amplitude within the temperature fluctuates during its diurnal cycle The model equation continuous time dx t dt RATC E The following statements contained in the procedure which declares the model will install the function R T t VAR RiGee TabrPunc the table TUNGCCLON Riri ey 7 tempVect grVect ARRAY 0 7 1 OF REAL used to pass the data to the function tempVect 0 tempVect 1 0 0 grVect 0 O03 GCEVEC ELLs 0 0 Oaoa On ModelWorks READ ME Page 22 Sat 1 Jul 2006 tempVect 2 10 0 GrVeEce 2 s 0 207 tempVect 30 20 0 Grvece Si 4 D175 tempVect 4 30 0 grVect 4 0 19 tempVect 5 40 0 GEVeECE 5 t 20 26 tempVect 6 50 0 GLVEece 6 Us oy DeclTabF RTt tempVect grVect 7 TRUE RECS Grown rate vs temperature Temperavure Groowe Tracey TCT Nii y 03205 OO Oy ORO asics This will allow to model the differential equation with the following statement in procedure Dynamic temp
11. e IDA ETHZ 37 pp WIRTH N 1985 Programing in Modula 2 Springer Berlin a o 3rd corr edition 202 pp WIRTH N 1988 Programing in Modula 2 Springer Berlin a o 4th edition 182pp WIRTH N GUTKNECHT J HEIZ W SCHAR H R SEILER H VETTERLI C amp FISCHLIN A 1992 MacMETH 3 2 A Fast Modula 2 Language System For the Apple Macintosh User Manual Departement Informatik ETH Z rich 4th completely revised edition Release 3 2 116 pp On ModelWorks READ ME Page 9 Sat 1 Jul 2006 On the History of ModelWorks ModelWorks has been designed originally by Markus Ulrich and Andreas Fischlin the later versions by Andreas Fischlin Olivier Roth and Dimitrios Gyalistras all from the Swiss Federal Institute of Technology Zurich in Switzerland ETHZ Thanks to the thorough testing and using by Thomas Nemecek many important improvements and extensions of ModelWorks became possible Later several other Ph D students and many scientific collaborators in particular Frank Thommen Jurg Thoeny Harald Bugmann Daniel Perruchoud and Thomas J Loeffler made partly extensive use of ModelWorks and helped to enhance the implementation and further its quality Together with the Dialog Machine the first versions of ModelWorks have been developed during the pilot project CELTIA Computer Aided Explorative Learning and Teaching with Interactive Animated simulation under the auspices of Prof Walter schaufelberger at the Proj
12. e redistribute it exactly in the form as you received it on the disk where you found this document All rights are reserved and any modifications are handled solely by the listed persons respectively institutions Authors and ETH Zurich claim all copyrights ModelWorks for the Macintosh comes as part of the RAMSES package It contains all software needed to edit compile and execute models see also topic Where to obtain ModelWorks For the IBM PC version however you have to purchase additional licenses in particular you require Windows and the Logitec Modula 2 development system There is also an old GEM version available where you require other licenses However all other underlying software i e the Dialog Machine and the auxiliary library are also available as freeware together with ModelWorks On ModelWorks READ ME Page 5 Sat 1 Jul 2006 Hardware Requirements In order to run ModelWorks on a Macintosh you require at least 512K of RAM memory and at least two 800 KB floppies for serious work however we recommend a hard disk the RAMSES package to which ModelWorks belongs requires uncompressed about 10 MB of hard disk space and at least 1 MB RAM preferably 4 MB For the IBM PC version under Windows you require at least 8 MBytes RAM and a graphics monitor with at least EGA resolution and a large hard disk For the IBM PC version under GEM you require at least 640 KByte RAM anda graphics monitor with at lea
13. ect Centre IDA at ETH The Dialog Machine has been designed by Andreas Fischlin and been implemented by Andreas Fischlin Alex Itten yd rai and Klara Vancso during the pilot project CELTIA at the Project Centre IDA at The later versions of ModelWorks have been developed during a research project funded by two grants from the Swiss National Science Foundation and the Systems Ecology Group of the ETHZ under the direction of Andreas Fischlin The two IBM PC implementations under GEM respectively Windows have been developed by Daniel Keller Project Centre IDA Institute of Automatic Control Theory at ETHZ and Thomas Wegmuller who also made the port of ModelWorks from the Macintosh to the IBM PC several times ModelWorks can be easily ported to every machine on which the Dialog Machine is available since it is simply a Dialog Machine program The following chapters of this ReadMe contain all Release Notes which have been added in the past to every release of ModelWorks It may be useful to trace exact properties of the various versions of ModelWorks On ModelWorks READ ME Page 10 Sat 1 Jul 2006 Release Notes for Version 3 0 3 June 2002 e No changes on the functionality of ModelWorks were made Only cosmetic fixes were made Known bugs Problem When using cursor keys to scroll in an I O window at the end of a list of model objects the scrolling stops although there are actually still some objects present Solution Use
14. h on the distribution diskette is locked open whole Never work on your original distribution diskette Step 2 In case you should not have the Desk Accessory MockWrite in your System on the hard disk included check under your Apple menu use the Font DA Mover to move it from the System contained on the ModelWorks disk into your System on your hard disk Step 3 Destroy the System Folder contained in the newly created folder RAMSES on your hard disk by dragging it into the trash can Step 4 If you wish to develop your own models you need also the MacMETH compiler This compiler is contained on the MacMETH distribution diskette which you have to obtain separately sorry from the following address Institut fur Informatik ETH Zurich ETH Zentrum CH 8092 Zurich Switzerland Do copy the file Compile contained in the folder SysProg on the MacMETH distribution disk into the folder Tools within your folder RAMSES Make sure you copy only the file Compile and no other file into your RAMSES folder Check also that the MacMETH version is 2 5 or later Procedure B Floppy disk only system On ModelWorks READ ME Page 20 Sat 1 Jul 2006 Step 1 Make first a working copy of the original ModelWorks distribution disk STORE the original ModelWorks disk in a safe place Make sure the write protection latch on the distribution diskette is locked open whole Never work on your original distribution diskette Step 2 Drag all files contained i
15. ical functions random number generators statistical analysis routines graphic utilities etc which are likely to be of high demand in a simulation environment At the end come quick reference listings for the convenient usage of all software i e of all auxiliary library modules the Dialog Machine and ModelWorks for the readers convenience Finally note there is also a separate document FISCHLIN et al 1995 with the file name RAMSES Install amp Tech Report distributed again in electronic form as part of RAMSES wich explains the installation the usage of the underlying MacMETH language system WIRTH et al 1992 information on the use of the Dialog Machine FISCHLIN amp SCHAUFELBERGER 1987 FISCHLIN et al 1987 KELLER 1989 together with ModelWorks how to make stand alone applications etc On ModelWorks READ ME Page 4 Sat 1 Jul 2006 Licensing Copyrights and Other Legal Stuff ModelWorks is FreeWare but not public domain software and is distributed on a non profit and non commercial basis only We just thought that there might be some other members of the scientific community out there who would be interested to share with us some of the more practical results from our research ModelWorks may not be redistributed for profit or sold by any means without prior written consent by the authors You are entitled to give a copy of this software to anybody you wish but make sure to distribute it unmodified only Pleas
16. l 2006 What Makes ModelWorks Unique First ModelWorks supports modular modeling With ModelWorks you can formulate and integrate models of the three standard model formalisms i e systems of coupled ordinary differential equations DESS Differential Equation System Specification difference equations SQM Sequential Machines or continuous time discrete event systems DEVS Discrete Event System Specification Hence models of a single or mixed type in any combination such as continuous time or discrete time alone or continuous and discrete time mixed with each other can be easily implemented Each model can have its own integration routine functioning on a different time step depending on precision and efficiency requirements Furthermore it is possible to declare or remove dynamically models and model objects in the middle of a simulation run models can generate new models with a structure depending on the obtained simulation results and added to the simulation experiment without having to interrupt the ongoing runs etc e Another of ModelWorks main strength is its open system architecture which allows you to extend it freely in any way ModelWorks does not feature a simulation language but offers the means to formulate models and to control simulation experiments within a high level programming language The hereby gained access to the power of an ordinary programming language is particularly important if you work with n
17. l you let choose from additional integration methods if you have decided for the larger version On ModelWorks READ ME Page 21 Sat 1 Jul 2006 e The folder M2 MiniLib contains the following modules MathLib OBMcontains fast routines which do not use SANE useful on Macs without a mathematical coprocessor Is the default MathLib OBM SANE contains slow but precise routines which do use SANE Depending on your preference you may choose between a fast but less precise does not use SANE or slow but precise uses SANE method to compute the MathLib functions like Ln Sin Cos etc In order to work with SANE or without follow these steps Rename first MathLib OBM the version present on the original disk to MathLib OBM NOSANE and then rename the file MathLib OBM SANE to MathLib OBM That s it From now on all computations using MathLib routines will be made either with SANE or without SANE You may any time switch back and forth between the two versions by renaming the file you wish to use to MathLib OBM thats the one ModelWorks will be using In case you should get confused which file is which read the Information on the files by selecting the Get Info command under the Finder menu File That s it you are now ready to work through the tutorial and you will be able to develop your own models with ModelWorks Have fun The module TabFunc is optional and will be linked to your model program only if you use it The following ModelWorks mo
18. models Instead you may pass a procedure which installs menus and menu commands where the latter allow to declare models and model objects Calls to the procedures which declare model objects DeclISV DecIP and DecIMV can be preceeded by a call to the new procedure SelectModel This procedure specifies the model to which subsequently declared model objects will belong On ModelWorks READ ME Page 16 Sat 1 Jul 2006 Release Notes for Version 1 3a January 1990 Compared with version 1 3 from October 1989 this version has only minor differencies to the previous version in respect to the functionality of ModelWorks The major difference is that ModelWorks 1 3a is now based on the Dialog Machine version 2 0 which offers substantial enhancements compared with older versions of the Dialog Machine and MacMETH version 2 6 eMany auxiliary modules have been added to the run time library such as calendar functions portable random number generators a module to read measured data into a model etc ModelWorks is now distributed on two diskettes The first contains only all documentations the sample models and a system folder The system folder is only of use if you have no hard disk The file System contains the desk accessory MockWrite which is distributed as shareware If you use it please do not forget to pay the author Print whatever you need copy any sample model you wish into your work folder but otherwise just archive this disk
19. n the folder Sample Models except for GrassCows MOD Logistic MOD and Logistic OBM from your ModelWorks working disk into the trash can In case you would need any of these files at some later time for instance as a template to start writing a new model you will have to copy that file from your original disk onto your working disk again Step 3 If you wish to develop your own models you need also the compiler from MacMETH This compiler is contained on the MacMETH distribution diskette which you have to obtain separately sorry from the following address Institut fur Informatik ETH Zurich ETH Zentrum CH 8092 Zurich Switzerland Do copy the file Compile contained in the folder SysProgs on the MacMETH distribution disk into the folder Tools on your ModelWorks working disk Make sure you copy only the file Compile and no other file onto your working disk Check also that the MacMETH version is 2 5 or later Note there will not be much working space left on your working disk This will require you to remove older files first from your working disk before you can start with a new project Otherwise there is no way than to add some more disk space onto your system In the latter case don t forget to modify the User Profile file accordingly Instructions on how to do it can be found in the MacMETH manual and in the ModelWorks Manual Appendix Procedure A as well as B Step F This step is common to both installation procedures described ab
20. nd finally The Macintosh with only 64K ROMs are no longer supported elf only discrete time models are installed the global simulation parameters simulation time begin and end integration step and monitoring interval are all rounded to the nearest integer and it is no longer possible to enter fractional values either via the user or the client interface All known bugs have been fixed in particular the procedure SimBase SetIntegrationStep functions now properly and the integration is performed correctly if only discrete time models are installed and the monitoring interval is different from 1 On ModelWorks READ ME Page 24 Sat 1 Jul 2006 Release Notes for Version 0 6 Januar 1988 The user interface has been changed by altering existing and introducing new menu commands Simulations on the Macintosh II with a color monitor are now supported The client interface has been modified by introducing the following identifiers SimMaster SimRun SimBase DeclExperiment These two new procedures exported both by module SimBase and SimMaster respectively they can be used to define any kind of experiment calling any times a whole simulation run The client modeller has to install into ModelWorks an experiment procedure by calling DeclExperiment This experiment can be executed once ModelWorks is active by the user by selecting the menu command Execute Experiment under menu Simulation This feature may be used for instance to
21. ne a port of ModelWorks to a new machine where the Dialog Machine is available is relatively simple Currently it is possible to port without having to change the source code at all large computer models developed on either a Mac an IBM PC or a Unix machine among all three platforms On ModelWorks READ ME Page 2 Sat 1 Jul 2006 e Finally there is also the so called Easy ModelWorks a simple tool for full interactive modeling of DESS and SQM systems Easy ModelWorks provides only a small subset of the functionality of the full fledged ModelWorks but the latter is often only needed by the sophisticated simulationist Since Easy ModelWorks models can be transformed into an ordinary ModelWorks model with a single command Easy ModelWorks provides also an easy and efficient entry into the world of ModelWorks Easy Modelworks On ModelWorks READ ME Page 3 Sat 1 Jul 2006 How to Learn More on ModelWorks A full fledged manual which describes the both the implementation of ModelWorks for the Macintosh as well as the IBM PC is available as part of this software release see folder MW within folder Docu and double click the file MModelWorks Manual sea It can be printed on any laser or inkjet printer instructions provided when you unpack the sea Be warned we do not expect you to be able to use ModelWorks without reading the essential parts of the manual Although you may comprehend the Standard user interface of
22. on standard model formalisms e g recursively defined model equations or if you want to customize the display of simulation results or if you wish to perform a particular sensitivity analysis or parameter identification at the end of a modelling and simulation study With ModelWorks your investments are protected since you will not have to switch to completely new simulation tools in order to accomplish such tasks e Thirdly ModelWorks provides interactive simulation since it is based on the Dialog Machine FISCHLIN amp SCHAUFELBERGER 1987 FISCHLIN et al 1987 KELLER 1989 a user dialog controlling software layer between application and system software In general the Dialog Machine substantially facilitates the programming of interactive programs on modern working stations with a windowing system a pointing device such as a mouse and a graphical user interface FISCHLIN et al 1987 Thanks to the open system architecture and the Dialog Machine you can also freely customize the user interface by extending the provided standard user interface or by completely replacing the latter with your own satisfying your specific needs This may facilitate the controlling of simulation experiments or the programming of special purpose animations or allow you to quickly transform a research model into a demo version with a simple and robust user interface which may then be used by practitioners and extension services Thanks to the Dialog Machi
23. ove Depending on your preferences it is possible to install ModelWorks with a full run time system or only with a smaller portion of it in case of memory limitations i e if your Mac should have less than 1 MByte RAM and it is also possible to switch between a MathLib which uses SANE Standard Apple Numerics Environment or not Note these installations are not final they can be reverted any time you wish e The folder RAMSESLIib contains the following modules SimLibS OBMCurrent default version of basic integration routines on original disk identical to the file SimLibS OBM no Aux see below SimLibS OBM no Aux Version of basic integration routines which will NOT call SimLibAux0 OBM see below results in a ModelWorks requiring little memory SimLiobS OBM Aux0 Version of basic integration routines which will call SimLibAux0 OBM see below results in a ModelWorks requiring more memory SimLibAux0 OBMcontains a variable step length integration method You may now simply choose your preferred version of ModelWorks large or small by removing first SimLibS OBM drag to trash second duplicate either SimLibS OBM Aux0 or SimLibS OBM no Aux depending on your preference and finally renaming the new copy to SimLibS OBM That s it All the rest will be taken care of by ModelWorks automatically For instance the dialog box which lets you select an integration method will look differently accordingly to your current installation i e it wil
24. pril 1989 The new version is fully compatible with previous versions but offers the following new features in the simulation environment Printing of the graph with the new menu commands Print graph and Page setup under menu File previously Control Support of transfer of the graph into the clipboard via the newly introduced menu Edit with the standard commands Undo Cut Copy and Paste To obtain more space on the menubar for the installation of additional menus by the modeller the previous menus Setup and Reset have been merged into a single menu Settings lt is now possible to enter and define so called project descriptions i e a project title comments on the current project and a project footer with the menu command Project description under menu Settings The project footer is by default updated by ModelWorks and contains the date time and simulation run number of the current simulation session This feature is optional and can be turned on or off Moreover this command also allows to control the new project documentation on the stash file see below for the various ModelWorks object classes ModelWorks will now write additional information and data onto the stash file Besides the project descriptors current date time and simulation run it will record the global simulation parameters and all data for the models state variables model parameters and monitorable variables by default
25. rsion 1 2 ModelWorks 1 3 will work on any Macintosh computer with at least 512 KB memory also on the new 68030 Macs like the Macllx cx and SE 30 with a system version 2 0 or later and Finder version 4 1 or later and is compatible with MacMETH V2 5 1 needed for 68030 Macs and the latest MacMETH V2 6 Simply install this version follow same procedure as described under Release Notes for Version 1 1 and continue your work that s it The new features are too numerous and too powerful to explain here please consult the manual Most of them are avialable either from within the simulation environment or via the client interface whenever meaningful the user and the client interface offer the same functions To mention just some of the most important new features they are Full control over curve attributes color here called stain style of drawing lines plotting symbols etc to associate permanently certain colors with particular variables or to hide temporarily a curve section etc Full control over appearance of all windows size position columns displayed etc Customization of graph The new optional module SimGraphUtils featuring drawing of observation results independently of simulation runs but in the same graph as ModelWorks draws Error bars can be displayed and it is also possible to draw anything you want into the graph by means of module DMWindowlO for customization of simulation results even pictures made with Ma
26. st EGA resolution and a hard disk For more details on hard and software requirements see FISCHLIN ef al 1995 On ModelWorks READ ME Page 6 Sat 1 Jul 2006 Where to Get ModelWorks ModelWorks can be obtained via anonymous ftp from the host ftp atitlan ethz ch in the directory pub mac RAMSES or pub pc MW WINDOWS or pub unix RASS Furthermore ModelWorks is also available via www Please visit our home page http www sysecol ethz ch Finally the Macintosh version is available on CD Apprentice at a bargain price from Celestin Company Inc 5652 NE Meadow Road Kingston Washington 98346 9505 Phone 360 297 8091 Fax 360 29 8092 http www celestin com For a list of products send and E mail to info celestin com On ModelWorks READ ME Page 7 Sat 1 Jul 2006 How to Feedback lf you do use ModelWorks please let us know We from the systems ecology group would like to hear from you and your experiences We welcome bug reports but please send us bug reports only by using electronic mail Send messages to the following internet address mailto ramses env ethz ch Attach if possible an enclosure containing the full source code of the model definition program which produced the bug If possible we will attempt to resolve the problem and answer your request However please be patient we are only a research institution Thank you For nostalgic users our ordinary mail address would be Systems Ecolog
27. th a particular method of extrapolation or no extrapolation whatsoever plus an interactive editor to change any of the values defining the function from within the simulation environment features a graph of the table function ModelWorks Version 1 1 is fully upward compatible with the previous version 1 0 i e no ModelWorks model definition program made with ModelWorks 1 0 needs to be recompiled or changed in any way in order to work with version 1 1 Simply install this version and continue your work that s it eIn order to run the ModelWorks sample model Logistic as described in the ModelWorks Tutorial you don t have to install first ModelWorks simply run the RMSMacMETH shell contained on the disk on which you found this document double click or open the application RMSMacMETH as any other Macintosh application Then choose the command Execute under the menu File and open in the folder Sample Models the file Logistic OBM eTo fully install ModelWorks follow one of the procedures described below Depending whether you have additional disk space available such as a hard disk follow procedure A otherwise only one 800K Byte floppy disk drive available follow procedure B Procedure A Hard disk system Step 1 Copy the content of the ModelWorks distribution diskette fully onto your Hard disk into a new folder you could name something like RAMSES STORE the original ModelWorks disk in a safe place Make sure the write protection latc
28. the scroll buttons at the top right corner of the I O window to scroll to the end of the list Then all objects will become accessible On ModelWorks READ ME Page 11 Sat 1 Jul 2006 Release Notes for Version 3 0 May 2000 e Support for the Batch Dialog Machine added When launching any MDP Model Definition Program written for ModelWorks in the so called batch mode of the Dialog Machine either a single simulation run or the structured experiment if installed is executed Upon termination of this experiment the MDP is automatically quit This means even on an interactive personal computer like a Macintosh or an IBM PC any ModelWorks MDP simulation experiment can be solved without any user interaction The Dialog Machine 3 0 features now a batch mode which behaves on an interactive machine exactly the same way as it does on a RASS host RASS RAmses Simulation Server RAMSES Research Aids for Modeling and Simulation of Environmental Systems Note in the batch mode any interactive elements of the graphical user interface are still fully managed and displayed if the host runs an intercative Dialog Machine In contrast to the ordinary interactive mode however any dialog is answered by the Dialog Machine itself given there is a default answer possible Otherwise the execution comes to a standstill The mode supports an easier development and or debugging of MDPs which are planned to be executed under RASS Moreover interac
29. tive machines can be treated like simulation servers running only in batch mode On ModelWorks READ ME Page 12 Sat 1 Jul 2006 Release Notes for Version 2 2 January 1997 March 1999 e No changes on the functionality of ModelWorks were made Each release is only due to bug fixes On ModelWorks READ ME Page 13 Sat 1 Jul 2006 Release Notes for Version 2 2 April 1996 e Supports now continuous time discrete event systems DEVS Discrete Event System Specification see new optional module SimEvents from ModelWorks client interface and the auxiliary library modules Queues StateEvents RandGen RandGen0O RandGen1 StatLio Confidence Histograms and StochStat which support the implementation of DEVS see e g sample model Diversity CarPollution or ForestYield Full dynamic model and model object management i e declaration and removal of models plus model objects at run time in the middle of simulation experiments see e g sample model ForestYield e Complex experiments like interactive parameter identification interactive construction of phase portraits are now supported e Client and user interface provide same functionality On ModelWorks READ ME Page 14 Sat 1 Jul 2006 Release Notes for Version 2 02 November 1990 This version is upward compatible with the previous version 1 3a from January 1990 It also uses the Dialog Machine version 2 02 and MacMETH version 2 6 2 also compatible with V 2 6
30. y ETHZ re ModelWorks Institute of Integrative Biology Ecology Evolution Infectious Disease Universitatstrasse 16 CHN E 35 1 CH 8092 Zurich SWITZERLAND ta a On ModelWorks READ ME Page 8 Sat 1 Jul 2006 Cited References FISCHLIN A amp SCHAUFELBERGER W 1987 Arbeitsplatzrechner im technisch naturwissenschaftlichen Hochschulunterricht Bulletin SEV VSE 78 1 15 21 FISCHLIN A MANSOUR M A RIMVALL M amp SCHAUFELBERGER W 1987 Simulation and computer aided control system design in engineering education In Troch ed Simulation of Control Systems IFAC IMACS Proceedings 13 51 60 FISCHLIN A 1991 Interactive Modeling and Simulation of Environmental Systems on Working Stations In Moller D P F amp Richter O eds Analysis of dynamic systems in medicine biology and ecology Informatik Fachberichte 275 131 145 FISCHLIN A GYALISTRAS D amp LOEFFLER T J 1995 Installation Guide and Technical Reference of the RAMSES Software Version 2 2 For Apple Macintosh Computers Technical Systems Ecology Report Swiss Federal Institute of Technology Zurich 44pp FISCHLIN A GYALISTRAS D ROTH O ULRICH M THOENY J amp NEMECEK T BUGMANN H amp THOMMEN F 1994 Model Works an interactive simulation environment for personal computers and workstations Systems Ecology Report No 14 324pp KELLER D 1989 Introduction to the Dialog Machine Report No 5 Project Centr
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