Mdd

Marcel Douwe Dekker (Mdd) (Delft 1964), Dutch systems engineer and conceptual artist participating in Wikipedia, Wikicommons, Wikiquote and Wiktionary, who started at the Dutch Wikipedia in September 2004.
After studying engineering, business administration and art I started in the early 1990s developing concepts across the fields of art, science, design and organization. This began with basic intuitive fascination for such things as expression, life, creation and destruction, and turned into investigating the process of systematization and visualization and the creation of a systematic world view.
The contributions I make to Wikipedia and Wikimedia Commons are part of my research & development as independent artist, in which I try to improve the representation on Wikipedia and Wikimedia Commons at the same time. I have uploaded over 3000 images here to Wikimedia, a large part just moved from Wikipedia, and another part found in older or new online source. Also, in 2008, I significantly contributed to the creation of categories for all diagrams with over 20.000 edits. This is part of the 150.000 contributions in total I made to several Wikipedia projects over the years. Over the years I started and developed a series of galleries at commons, which are intended to give an overview both thematically and historically of the particular subjects. This can be helpful to structure the representation of those subjects in corresponding Wikipedia articles.
Due to a lack of illustrations in particular fields of the formal sciences, I have been creating a series of illustrations. In between I have done some documentary and portrait photography for Wikipedia . Recently, I have been donating some of my earlier photography from the preinternet era (and have been writing corresponding Wikipedia articles). In recent years, focusing on the Netherlands, Wikimedia Commons has been granted a large donation of black and white images from social, political and cultural events. I think there are still large gabs of more recent preinternet events. It would be great if we together continue to make Wikimedia Commons a place to represent this era, and collect images of notable events.
Commons contributions : GalleriesEdit
 Visualization
 Main Chart, Diagram, Map and Technical drawing
 Acoustics diagram • Bar chart • Block diagram • Classification chart • Cluster diagram • Concept map (expanded) • Diagrams by period • Flow chart • Flow diagram • General diagram types • Graphs in graph theory • Logic diagram • Mathematical diagram • Medieval diagram • Network diagram • Pie chart • Plot• Specific diagram types • Table (information) • Tree diagram • Timeline • Train timetable
 Management, economics and other societal modelling
 Main Economic diagram, Management diagram
 Circular flow diagram • Cost accounting • Geographic diagram • History of accountancy • Old maps of Rotterdam • Organizational chart • Public administration diagram • Scientific management • Stock exchange • Stock certificates • Time clock
 Systems and software engineering
 Activity diagram • Class diagram • Composite structure diagram • Processdata diagram • Software design patterns • Systems engineering • Unified Modeling Language
 Technology and technical visualisation
 Abacus • Arithmetic • Automation • Bookcase • Machine shop • Patent drawing • Regent's Canal • Technical drawing
 Other galleries
 Designers
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Commons contributions : ImagesEdit
Software and enterprise engineering illustrationsEdit
Philosophy of science illustrationEdit
Documentary picturesEdit
Commons contributions : CategoriesEdit
 Science
Scientific books
 Category:Anatomy books • Category:Chemistry books • Category:Economy books • Category:Physics books • Category:Scientific books • Category:Scientific journals • Category:Scientific literature
Scientists categories
 Category:Applied scientists • Category:Artificial intelligence researchers • Category:Chaos theorists • Category:Charles Sanders Peirce • Category:Cognitive scientists • Category:Complex systems scientists • Category:Control theorists • Category:Cyberneticists • Category:Decision making • Category:Engineers from Mexico • Category:Nicholas Oresme • Category:Operations researchers • Category:Physicists from Mexico • Category:Scientists from Suriname • Category:Scientists from Ecuador • Category:Scientists from Turkey • Category:Systems biologists • Category:Systems engineers • Category:Systems psychologists • Category:Systems scientists
 Systems theory
Systems theory categories
 Category:Conceptual systems • Category:Information systems • Category:Logicians • Category:Operations research • Category:Physical systems • Category:Scientific modeling • Category:Systems • Category:Systems biology • Category:Systems dynamics • Category:Systems theory diagrams • Category:Systems scientists
Systems engineering Categories
 Category:Business process modeling • Category:Business Process Modeling Notation • Category:Configuration management • Category:Space system configurations • Category:Systems engineers • Category:Systems engineering • Category:Diagrams from Systems Engineering Fundamentals • Category:Information technology management • Category:Requirements analysis • Category:Systems Development Life Cycle • Category:Work breakdown structures
 Software engineering
General categories
 Category:Computer science diagrams • Category:Computer scientists from the Netherlands • Category:Data model (GIS) • Category:Data modeling • Category:Data types • Category:Dynamic Systems Development Method • Category:Enterprise architecture • Category:Enterprise modelling • Category:EXPRESS • Category:Integrated Enterprise Modeling • Category:IDEF • Category:IDEF0 • Category:IDEF1X • Category:IDEF3 • Category:IDEF5 • Category:Jackson Structured Programming • Category:Extended Enterprise Modeling Language • Category:LePUS3 • Category:Modeling languages • Category:NIAM • Category:Objectoriented design • Category:Object role modeling • Category:Ontology (computer science) • Category:SADT • Category:Serviceoriented architecture • Category:Serviceoriented modeling • Category:Software configurations • Category:Software development methodology • Category:Software development process • Category:Structured analysis • Category:Zachman Framework
Specific software engineering diagram categories
 Category:Component diagrams • Category:Composite structure diagrams • Category:Computer architecture diagrams • Category:Computer arithmetic • Category:Computer charts • Category:Computer network diagrams • Category:Computer science charts • Category:Computer science flowcharts • Category:Computer science graphs • Category:Computer science venn diagrams • Category:Interaction overview diagrams • Category:Logical computer diagrams • Category:NassiShneiderman diagrams • Category:Object diagrams • Category:Processdata diagram • Category:Package diagrams • Category:Sequence diagrams • Category:Spiral model of Boehm • Category:Timestate diagrams • Category:UML Activity diagrams • Category:UML Communication diagrams • Category:UML State diagrams • Category:Use Case diagrams
 Visualization
General categories
 Category:Data visualization • Category:Diagram legends • Category:Diagrams by theme • Category:Diagrams by type • Category:Engineering diagrams • Category:Geographic information systems • Category:History of visualization • Category:Information visualization • Category:Map legends • Category:Plots by type • Category:Scientific visualization • Category:Thermodynamic diagrams • Category:Viewpoints • Category:Visual analytics • Category:Visualization •
Specific categories
 Category:3D area charts • Category:3D bar charts • Category:3D line charts • Category:3D phase diagrams • Category:3D pie charts • Category:3D Spectrogram • Category:3D tree diagrams • Category:Acoustics diagrams • Category:Actor diagrams • Category:Agricultural charts • Category:Agricultural diagrams • Category:Agricultural illustrations • Category:Agricultural machine illustrations • Category:Agricultural maps • Category:Agricultural stamps • Category:Agricultural tools illustrations • Category:Agriculture in heraldry • Category:Alphabet charts • Category:Anthropology diagrams • Category:Archaeological diagrams • Category:Astronomy cluster diagrams • Category:Brainstorming • Category:Beef illustrations • Category:Bubble maps • Category:Cattle illustrations • Category:Cereals illustrations • Category:Clusters • Category:Cluster diagrams • Category:Context diagrams • Category:Countryside illustrations • Category:Crop illustrations • Category:Cycle diagrams • Category:Decision diagrams • Category:Decomposition diagrams • Category:Deployment diagrams • Category:Economic bar charts • Category:Economic block diagrams • Category:Economic charts • Category:Economic circular flow diagrams • Category:Economic diagrams • Category:Economic graphs • Category:Economic illustrations • Category:Economic pie charts • Category:Explanatory diagrams • Category:Existential graphs • Category:Fault tree diagrams • Category:Flow maps • Category:Fruit illustrations • Category:Function block diagrams • Category:Functional flow block diagrams • Category:GDP bar charts • Category:Heat exchanger diagrams • Category:Image compressing • Category:Ladder diagrams • Category:Line charts • Category:Livestock diagrams • Category:Livestock illustrations • Category:Maize illustrations • Category:Management charts • Category:Management graphs • Category:Management icons • Category:N2 Charts • Category:National Geologic Map Database Project • Category:Neural network diagrams • Category:Nolan charts • Category:Organizational charts • Category:Organizational timelines • Category:Parse trees • Category:PERT charts • Category:Plough illustrations • Category:Process diagrams • Category:Run charts • Category:Sankey diagrams • Category:Smith charts • Category:Snellen charts • Category:Sociological bar charts • Category:Sociological charts • Category:Spiral curves • Category:Spiral diagrams • Category:Square of opposition • Category:Star plots • Category:Steam generator diagrams • Category:Stellation diagrams • Category:Strasburgers flower diagrams • Category:Structure charts • Category:Systems theory diagrams • Category:Thermodynamic diagrams • Category:Time diagrams • Category:Timing diagrams • Category:Triangular diagrams • Category:Truth tables • Category:Violin plots • Category:Web maps • Category:Wikimedia organizational charts • Category:Wikipedia diagrams • Category:Wikipedia decision diagrams
 Visualization history
Categories
 Category:Diagrams by century made • Category:Ancient diagrams • Category:Medieval diagrams • Category:16thcentury diagrams • Category:17thcentury diagrams • Category:18thcentury diagrams • Category:19thcentury diagrams • Category:19thcentury flower diagrams • Category:20thcentury diagrams • Category:1900s diagrams • Category:1910s diagrams • Category:1910s technical drawings • Category:1920s diagrams • Category:1920s technical drawings • Category:1930s diagrams • Category:1930s technical drawings • Category:1940s diagrams • Category:1940s technical drawings • Category:1950s diagrams • Category:1960s diagrams • Category:1970s diagrams • Category:1980s diagrams • Category:1990s diagrams • Category:21stcentury diagrams • Category:2000 diagrams • Category:2001 diagrams • Category:2002 diagrams • Category:2003 diagrams • Category:2004 diagrams • Category:2005 diagrams • Category:2006 diagrams • Category:2007 diagrams • Category:2008 diagrams
.
See alsoEdit
 Template:UsefulobjectUS, see also here
 Template:PDUSnot renewed, link to double check, and example how to explain.
 Mdd user statistics on Commons at wikiscan.org
External linksEdit
 Marcel Douwe Dekker homepage (now partly in English).