Chris Karakas Work linux rpm mathematics computer graphics AMANDA lyx lyxtox jade sgml document processing php-nuke backup vfat filesystem book programming management block SAP meteosat moon sun virus virus info tips tricks web radio user friendly comic strip module treemenu php class dynamic php sitemap node dynamic menu tree programming php manual pear manual rdf forums newsfeed phpbb linux tools R/2 R/3 RK/P CO PS MM FI SD IS-RE hidden-line algorithm visibility offset curves patterns research papers neural networks linear association linear separation learning rules Hebb relaxation delta Greville perceptron Ho-Kashyap linear programming linear inequalities neural Thessaloniki Kaiserslautern university 0.16 10.08.2006 CK RPMs for GTK 2, MySQL Administrator, MySQL Query Browser, Dia, GIMP, gtkhtml 0.15 07.07.2006 CK RPMs for Code::Blocks 0.14 13.03.2006 CK Corrected typos, links. Added new Index. Added sections: Disclaimer, Formats, License, Conventions 0.13 25.08.2005 CK wxGTK RPM packages 0.12 23.05.2005 CK Graphviz RPMs 0.11 06.04.2005 CK Section on RPMs 0.10 02.11.2004 CK New versions of the PHP and PEAR manual modules for PHP-Nuke 0.09 28.07.2004 CK Alternative URLs for other continents in Meteosat block for PHP-Nuke 0.08 25.06.2004 CK NukeAutumn theme for PHP-Nuke 0.07 08.06.2004 CK PHP manual module for PHP-Nuke, rdf-nuke.php script for newsfeeds of PHP-Nuke Forums 0.06 19.02.2004 CK New version 2.0 of PHP-Nuke book, initial public presentation of LyX-to-X project and my Jade installation notes 0.05 01.12.2003 CK Added info on Moon and Sun PHP-Nuke and Virus Info blocks 0.04 25.08.2003 CK PHP-Nuke stuff put in a separate chapter. 0.03 15.07.2003 CK GNU/Linux Tools Summary 0.02 02.06.2003 CK CSS, image captions, text update, footer, index. ChrisKarakasThis is a summary of my work. In you can find links to the various formats of this document.In you can read a tabular overview of my SAP R/2 and R/3 projects, which span a spectrum of various modules like RK/P, CO, PS, FI, MM, SD, IS-RE.In I present my LyX-to-X project, describing my method of document processing with LyX and SGML. Further you can read my Jade installation notes, a collection of Linux Tips and Tricks, a GNU/Linux Tools Summary and a document on how to use AMANDA to do correct incremental backups of vfat filesystems. You can also find a section with links to my binary and source RPM packages of interesting software for LINUX.In I present a book on the management and programming of PHP-Nuke; some PHPNuke blocks: for Meteosat images, for the daily User Friendly comic strip, for Web Radio and one for dynamic menu blocks using the Treemenu class; the rdf-nuke.php script that creates highly customizable newsfeeds from PHP-Nuke Forums; the NukeAutumn theme for PHP-Nuke; and the manual modules: PHP manual as a PHP-Nuke module and PEAR Manual module for PHP-Nuke.In I briefly discuss my Master's Thesis on neural networks and learning rules. It's about Hebb, Delta, Greville, Perceptron, Ho-Kashyap, Relaxation and Linear Programming learning rules for linear association and/or separation.In you can find hard links to some computer graphics papers of mine, discussing hidden line algorithms, visibility and offset curves. This is a summary summarydocument. It is divided in chapters chaptersthat hold references referencesto individual individualdocumentsdocuments describing some work workof mine. If you are interested in some specific specificarea,area go to the appropriate chapterchapter and follow the links linksthere. No liability liabilityfor the contents of this documents can be accepted. Use the concepts, examples and other content at your own risk. As this is work in progress,document there may be errors and inaccuracies, that may of course be damaging to your system. Proceed with caution, and although this is highly unlikely, the author does not take any responsibility for that.All copyrights are held by their respective owners, unless specifically noted otherwise. Use of a term in this document documentshould not be regarded as affecting the validity validityof any trademark trademarkor service mark.markNaming of particular products or brands should not be seen as endorsements.endorsements For the sake of completeness,completeness and for the case casethat you are interested in some other formats formatsof this summary summarydocument, here they are:HTML (HyperText Markup Language), many HTML HTMLfiles files(one for every section), for viewing viewingwith any browserHTML (HyperText Markup Language), one big HTML HTMLfileTXT (ASCII Text)RTF (Rich Text Format)PDF (Portable Document Format)PS.GZ (Compressed Postscript)SGML (Standard Generalized Markup Language)LYX (LaTeX frontend LyX) In order to get correct page numbers in Microsoft Word, type the following after opening the document: CTRL END CTRL A F9 In Word Viewer 97, you must instead do: CTRL END ALT V N ALT V P See The OpenJade RTF backend for more details. If you want to download the HTML or RTF formats for offline reading, you will need to download the images as well - PNG for HTML and BMP for RTF, including the callouts! To save you the hassle, I have compiled the following zipped tar archives for offline reading: TAR.GZ (Compressed TAR Archive), many HTML files with images TAR.GZ (Compressed TAR Archive), one big HTML file with images TAR.GZ (Compressed TAR Archive), SGML file with images TAR.GZ (Compressed TAR Archive), RTF file with imagesA tarball tarballcontaining all the above is also available:available TAR.GZ (Compressed TAR Archive), All filesThe newest versions versionsof all the documents documentspresented here contain containsome major improvements improvementsover older ones:New professional professionallook through CSS.CSSNew footer footericons.icons If you click clickon them, they will validate validatethe current currentpage pagefor HTML HTMLand CSS CSSrespectively.HTML code codethat validates as HTML HTML4.01 transitional.transitional Copyright Copyright© 2002-2006 Chris Karakas. All rights reserved. admonitions Admonitions are little pictures picturesused to emphasize emphasizesomething of importanceimportance to the reader.reader The four types typesused are: Using a hammer to put together your computer is bad. Do not hit your thumb with the hammer, it hurts! Watch where you're swinging that hammer! Hitting your thumb with a hammer may lead to an unwanted trip to the hospital! Do not, under any circumstances, admit that you hit your own thumb with a hammer. The ridicule you will face is astounding! access  keys keys Access Access keys keysenable enable navigation navigationthrough the document,document without relying on a mouse.mouse The following following keys keyshave been given special special meaning meaningin this document:documentP Previous Previouspage.N Next Nextpage.H Home Homeof the document document(Table of Contents).U Up (takes you one level levelup the section sectionhierarchy).If you also happen to be reading readingthe document documentfrom its original originallocation, then the following following access access keys keyscan also be used:S Start Start(takes you to the author's start startpage).T The current current(“This”) page,page without the Sitemenu Sitemenuon the left.leftM The current current page pagein a frameset,frameset where the left left frame framecontains a Menu.Menu To use the access keys, you have to simultaneously press a modifier key, which may vary from browser to browser. For example in NN6+/Mozilla, the modifier key is ALT, so you have to use ALT N to go to the next page, and ALT P to come back. In other browsers such as IE6, the access keys just give focus to the associated link, so the sequence becomes ALT N Enter . Try it, you'll like it! ]]> ]]> ]]> ]]> Inline graphic

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I am a freelancer,freelancer an IT ITConsultant specialized specializedin SAP R/3 R/3and R/2R/2. I have worked on numerous database databaseand SAP SAPrelated projects.projects For this area,area the term termERP (Enterprise Resource ResourcePlanning) has been established.established The following followingdocuments documentsdescribe some aspects aspectsof my ERP ERPwork:workSAP R/2 and R/3 projects.

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Some texts textsfrom my ongoing ongoingproject " Sleepless SleeplessChrisChris" belong here. For example:exampledocument processing with LyX and SGML: describes my LyX-to-X LyX-to-Xproject,project a collection collectionof sedsed, awkawk and shell shellscripts and DSSSL DSSSLstylesheets that let you write in LyXLyX, then publish publishin HTML,HTML PDF,PDF PS,PS RTF RTFand TXT TXTformats formatsautomatically. But that's not all: the scripts scriptsenable enablethe use of MathematicsMathematics, bibliographic bibliographicdatabases and automatic automaticIndex generation generationprocedures, transparently transparentlyfor the user,user all controlled controlledfrom one source sourceand one click clickof a button.button If you ever wondered how the documents documentson this website websiteare made, this 200 page pageguide will tell you all the gory gorydetails.details Moreover, now you can grab your free copy of the LyX-to-X scripts and start startproducing producingprofessionally formatted documents documentsyourself!Jade installation notes: describes my first steps,steps back in 2001, in creating a document documentprocessingprocessing system systemwith JadeJade and SGMLSGML on Linux.Linux It is this frustrating frustratingexperience experiencethat gave birth birthto the collection collectionof scripts scriptsthat comprise comprisemy LyX-to-X project above.Linux Tips and Tricks: A loose loosecollection of subjects subjectsthat have more or less to do with Linux.LinuxGNU/Linux Tools Summary: A work workin progress,progress by Gareth Anderson,Anderson to become a HOWTO HOWTOof the Linux Documentation Project. I host hostthe official,official “ bleeding bleedingedgeedge” version versionand I help with the conversion conversionto DocBook DocBookSGML SGML(and other formats) from the LyX LyXsources sourcesas described in document processing with LyX and SGML.Using AMANDA to backup vfat filesystems.My self-compiled self-compiledRPM packages,packages see .

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I compile compilebinary and source sourceRPM packagespackages for the software softwareI need and don't have on my SuSESuSE Linux Linuxsystem system- either because the available availableversion from SuSE SuSEis too old, or because there is no package packageavailable availableat all. Of course courseone can use the usual 3-line mantra:mantra to install installa package packagefrom source,source but having a RPM RPMpackage packagehelps keep tracktrack of the files filesinstalled on a system,system as well as their dependencies.dependenciesI offer offerbinary and source sourceRPMs RPMsfor the following followingsoftware,software as well as any dependent dependentpackages:packagesLyX, a LaTeXLaTeX and DocBookDocBook editor.editorGNU MP library (GMP), a free freelibrary libraryfor arbitrary arbitraryprecision arithmetic,arithmetic operating operatingon signed integers,integers rational rationalnumbers, and floating floatingpoint pointnumbers.Octave, a high-level high-levellanguage, primarily intended intendedfor numerical numericalcomputations.computationsYacas, (Yet Another Computer ComputerAlgebra AlgebraSystem), a small and highly flexible flexiblegeneral-purpose general-purposecomputer computeralgebra computer algebrasystem and programming programminglanguage.po4a, (po for anything) project projectgoal goalis to ease translations translations(and more interestingly, the maintenance maintenanceof translations) using gettext tools toolson areas areaswhere they were not expected expectedlike documentation.documentationpoedit, a cross-platformcross-platform gettext gettextcatalogs (.po files) editor.editorAnjuta, a versatile versatileIntegrated Development DevelopmentEnvironment (IDE) for C++ C++and C++ on GNU/Linux.Graphviz, an open opensource graph graphvisualization software.software See How to use Graphviz to generate complex graphs for a tutorial.tutorialwxWidgets (wxGTK), a single,single easy-to-use easy-to-useAPI for writing writingGUI GUIapplications on multiple multipleplatforms.platformsCode::Blocks, a free C++C++ IDEIDE, built specifically to meet the most demanding needs of its users.GTK+ 2 (package gtk2), a multi-platformplatformmulti-platform toolkittoolkit for creating graphical user interfacesinterfaces. Offering a complete set of widgetswidgets, GTK+GTK is suitable for projects ranging from small one-off projects to complete application suitessuites, application.MySQL Administrator, a powerful visual administrationadministration consoleconsole that enables you to easily administer your MySQL environmentenvironment, MySQL and gain significantly better visibilityvisibility into how your databasesdatabases are operating.MySQL Query Browser, a visualvisual tooltool, visual for creating, executing, and optimizing SQL queriesSQL, queries for your MySQLMySQL Database Serverserver, database. The MySQL Query BrowserQuery Browser, MySQLbrowser, query gives you a complete set of drag-and-dropdrag-and-drop tools to visually buildbuild, visually, analyzeanalyze and managemanage your queriesqueries.gtkhtml, a HTML rendering/editingediting librarylibrary, rendering designed to be easily embeddedembedded into applications that require lightweightlightweight HTML functionalityfunctionality, HTML. Many programs that use GTK+, like the MySQL Query Browser, need the gtkhtml2gtkhtml2 packagepackage.Dia, is inspired by the commercial WindowsWindows program 'Visio'Visio, though more geared towards informal diagramsdiagrams for casual use. It can be used to draw many different kinds of diagrams. It currently has special objects to help draw entityentity relationshiprelationship diagrams, UML diagrams, flowchartsflowcharts, network diagramsdiagrams, networks, and many other diagrams.The GIMP, (GNUGNU Image Manipulation Program) is a powerful image compositioncomposition, image and editing programprogram, editing, which can be extremely useful for creating logoslogos and other graphics for Web pages. The GIMPGIMP has many of the tools and filtersfilters you would expect to find in similar commercial offeringsofferings, and some interesting extras as well. The GIMP provides a large image manipulation toolboxtoolbox, image manipulation, including channelchannel operations and layerslayers, effectseffects, sub-pixelpixel imaging and anti-aliasingaliasing, and conversionsconversions, all with multi-level undoundo.Use the commandcommandto installinstall the binary binaryRPMs.RPMs I used the build package packageof SuSE SuSEto compile compilemy own source sourceRPMs RPMsfrom source, as described for example examplein Compiling SuSE Source Packages. Note Notethat up to and including version version9.0, SuSESuSE uses the usedforbuildusedforbuild string stringon a comment commentline lineof the specspec file fileto list listall needed files filesfor a successful successfulcompilation of the package.packageThe packages packagesare build buildfor SuSE SuSE9.0. To rebuildrebuild a package packagefor your own version versionof (SuSE) Linux,Linux use the source sourceRPMs RPMsand the build buildand/or rpmbuildrpmbuild commands,commands as described in How to compile an older version for a newer system in RPM.

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Here is some work workfrom my involvement involvementin PHP-Nuke:PHP-Nuke: Management and Programming. This is a book bookon PHP-Nuke PHP-Nukethat I have written writtentogether with Claudio ClaudioErbaErba of spaghettibrain. It started as a translation translationof Claudio's original originalwork workin italian italian(see this PHP-Nuke book translation thread at nukeforums). Meanwhile, I added a whole lot of material materialto it - and Claudio Claudioupgradedupgraded his part too, so that, taken together, you now have the most complete completeguide to PHP-Nuke PHP-Nuke(more than 500 pages!) at your disposal! disposal!Also available availableas a PHP-Nuke Module! See the Formats section for a list listof all available availableformats.This document documentis also an official officialHOWTO HOWTOof the Linux Documentation Project. Translators Translatorsto other languages languageswanted! Contact Contactme at my PHP-Nuke Forum if you are interested in translating translatingit. Be prepared preparedfor some hard work.work :-)User Friendly Comic Block for PHP-Nuke. This PHP-Nuke PHP-Nukeblock blockwill display displaythe daily comic from the well-known well-knownUser Friendly site.site Read the source code of the UserFriendly Comic Block for PHP-Nuke online.onlineMeteosat Block for PHP-Nuke. This PHP-Nuke PHP-Nukeblock blockwill display displaythe most recent images of the World and Europe taken by Meteosat. Read the source code of the Meteosat Block for PHP-Nuke online.online It now contains URL URLexamples for Meteosat Meteosatimages imagesof other parts of the world worldas well: North Northand Central CentralAmericaAmerica, South SouthAmericaAmerica, East EastAsiaAsia, Central CentralAsiaAsia, AfrikaAfrika and AustraliaAustralia. Web Radio Block for PHP-Nuke. This PHP-Nuke PHP-Nukeblock blockwill display displaysome links to web radio stations as well as an embedded embeddedRealPlayer console.console Clicking on a link linkwill play that station's music musicin a separate RealPlayerRealPlayer window.window Pressing the Play button buttonof the embedded embeddedconsole will play the music musicof the first link.link Of course,course you may change changethis behaviour behaviour;-). Read the source code of the Web Radio Block for PHP-Nuke online.onlineTreemenu block for PHP-Nuke: in this document documentI describe the adaptation adaptationof Treemenu (a dynamic dynamicmenu written writtenas a PHP class) to PHP-Nuke PHP-Nukefor the creation creationof a dynamic menu block. The administrator administratorneeds only edit edita plain text textfile (sitemap.txt) to reflect reflectthe required tree treestructure. The (sub)tree nodes nodesexpand expandand collapse collapsethrough user userinteraction very intuitiveintuitively. You can read the docs online here and download the Treemenu block code.Moon & Sun block for PHP-Nuke. This PHP-Nuke PHP-Nukeblock blockwill display displaythe current images of the moon and sun, taken by the U.S.U.S. Naval NavalObservatory and the NASANASA Goddard GoddardSpace Flight FlightCenter . Read the source code of the Moon and Sun Block for PHP-Nuke online.onlineVirus Info block for PHP-Nuke. This PHP-Nuke PHP-Nukeblock blockwill display displaythe current top viruses and worms, powered poweredby Trend TrendMicro. It is a nice educative educativeexample exampleof how you can include includeJavascript code codein a PHP-Nuke PHP-Nukeblock.block Read the source code of the Virus Info Block for PHP-Nuke online.onlineI have also left leftthe cachingcaching code codeintact, but commented.commented If you have CacheLite installed, you can uncomment uncommentit and cache cachethe block's contents contentswith it - another nice educative educativeexercise! Of course,course the block blockwill work workfine without caching cachingtoo. For more information informationon caching cachingwith PHP-Nuke,PHP-Nuke see How to accelerate PHP-Nuke. PHP Manual module for PHP-Nuke. New version versionavailable.available Contains the PHP PHPManual Manualas of Oct. 13th, 2004. The whole PHP manual as a PHP-Nuke PHP-Nukemodule, ready to be used on your PHP-Nuke PHP-Nukesite! CompleteComplete with all links! No use of iframesiframes is made, so this module moduleis browser-independent.browser-independent Full customization customizationcontrol provided through CSSCSS for thorough adaptation adaptationto your personal personaltheme.theme A must-have must-havefor every technically-oriented technically-orientedPHP-Nuke site.sitePEAR Manual module for PHP-Nuke: First public publicrelease releaseavailable.available Contains the PEAR PEARManual as of Oct. 3rd, 2004. The whole PEAR manual as a PHP-Nuke PHP-Nukemodule, ready to be used on your PHP-Nuke PHP-Nukesite! CompleteComplete with all links! No use of iframesiframes is made, so this module moduleis browser-independent.browser-independent Full customization customizationcontrol provided through CSSCSS for thorough adaptation adaptationto your personal personaltheme.theme A must-have must-havefor every technically-oriented technically-orientedPHP-Nuke site.siterdf-nuke.php. I have glued gluedthe famous famousrdf.php for phpBBphpBB and backendforums.php backendforums.phpof nukecops nukecopstogether to create createan RSS newsfeed of any combination of PHP-Nuke Forums on a site. Upload Uploadthe rdf-nuke.php file fileto your PHP-Nuke PHP-Nukeroot rootdirectory directoryand enjoy enjoythe all-round all-roundsyndication of any and all forums forumson your site sitein any combination combinationand variation: variation:from one single singleforum to three in a bundle bundle- you define definehow long should be the description descriptionof the latest posts postssyndicated, the number numberof news newsitemsitems, and can even specify specifythat the forum forumname or post postdate datebe included in the title titleof each news newsitem!NukeAutumn theme for PHP-Nuke. I have created a theme,theme NukeAutumn,NukeAutumn that is identical identicalto the NukeNewsNukeNews theme,theme but incorporates the "falling leaves" effect effectof the Javascript Javascriptdiscussed in How to use Javascript in the body of the PHP-Nuke page. You only need to extract extractthe archive archivein the PHP-Nuke PHP-Nukeroot rootdirectory directory(i.e. where also config.php config.phpis in). It will automatically automaticallycreate createa folder folderthemes/NukeAutumn with all necessarynecessary files filesin it. To see the Autumn Autumneffect,effect just choose NukeAutumn NukeAutumnas your theme.theme

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I hold a degree degreein pure mathematics from the University of Thessaloniki, Greece,Greece a diploma diplomaand a M.Sc.M.Sc in industrial mathematics from the University of Kaiserslautern, Germany.Germany Here is some mathematics mathematicswork workof mine: Master's Master'sThesis ().

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My Master's thesis (called “ diploma diplomaworkwork” in german) at Kaiserslautern Kaiserslauterndealt with the mathematical mathematicalaspects of some neural networks, the exact exacttitle being being“ Neural Neurallearninglearning rules rulesfor linear linearassociation and separationseparation”. After giving a formal formalmathematical mathematicaldefinition of neural neuralnetworks, I consider the linear linearassociation problem problemand some so-called “ learning learningrulesrules” for its solution:solutionHebb's ruleHebb's ruleDelta ruleDelta ruleGeneralized inverses generalized inversesinverse, generalizedand the Greville algorithmI show that the Greville Grevillealgorithm has the same general generalform as the DeltaDelta rule rulebut does not have its limitations limitationsregarding orthogonality orthogonality(Hebb) or linear linearindependence (Delta) of the input inputvectors and infinite infiniterepetition of the learning learningprocess (in fact,fact it converges to a solution solutionafter a finitefinite number numberof steps,steps so that the input inputvectors need only presented once to the network). Continuing from linear linearassociation to linear linearseparation,separation I consider the Perceptron rulerulePerceptron rulethe relaxation rulerelaxation rulethe Ho-Kashyap ruleHo-Kashyap ruleI give a generalized generalizedconvergence proof prooffor the Perceptron Perceptronlearning rule.rule I present corrected proofs proofsof the relaxation relaxationand Ho-Kashyap Ho-Kashyaprules rulesand touchtouch on a solution solutionby linear linearprogrammingprogramming. As you can read in a 1997 paper by Prof. G. Labonté, the scientific scientificcommunity communitydid not seem to realize that the relaxation relaxationmethod can be used in the context contextof neural neuralnetworks. In my 1992 Master's thesis, I devote a whole chapter (5.2, pp.30-37) to the treatment treatmentof the relaxation relaxationmethod for the linear linearseparation separationproblem which is fundamental fundamentalto neural neuralnetworks (you can transform transforma non-linear non-linearseparationseparation problem problemto a linear linearone, using an aproppriate non-linear non-lineartransformation of the input inputspace). Finally all methods methodsare investigated theoretically theoreticallyas well as practically regarding their asymptotic asymptotictime timebehaviour.behaviourIf you are interested in a printed printedcopy copyof my Master's Master'sthesis (in german) and the source sourcecode code(FORTRAN), you can buy buyit online:online Master's thesis on Neural Networks. The following followingtable tablecontains the key keydata:data EAN 9783898112338 ISBN 3-89811-233-0 Libri 6758517

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I have done some work workon computer computergraphics that should go here. During my studies studiesat Kaiserslautern Kaiserslautern, I developed developedsome hidden-line hidden-linealgorithms,algorithms which I published in the following followingtwo research researchpapers:C. KarakasKarakas, “ Hidden-line Hidden-linealgorithm based on range rangesearchingrange searching”, Comput.-Aided Des. vol. 23 no.10 (1991) pp.684-691C. KarakasKarakas, “ Applications Applicationsof visibility visibilityon the computation computationof offset offsetcurveoffset curvecurve patternspatterns”, Comput. & Graphics vol. 16 no. 2 (1992) pp. 159-165I have a faible faiblefor visualizationvisualization, so I added graphics graphicsto the Mortgage Calculator of David Tufts,Tufts at the bottom bottomof the page,page the first one displaying the remaining balance,balance the second showing the interplay interplayof monthly monthlypaid interestinterest vs. monthly monthlypaid principal,principal both on a month/money coordinate coordinatesystem.system You can see the source code here. It's a nice example exampleof dynamic dynamicweb graphicsgraphics using PHP and the PHPlot Library. &appendix; &bibliography; &index;