visualizing systems

Download Visualizing Systems

Post on 30-Apr-2015

437 views

Category:

Design

3 download

Embed Size (px)

DESCRIPTION

Concise overview of 4 different types of diagrams for visualizing systems followed by brief treatment of animated approaches to explaining systems.

TRANSCRIPT

  • 1. Visualizing SystemsAn overview of the options Tim Sheiner, all rights reserved
  • 2. A system is an interconnected setof elements that is coherentlyorganized in a way that achievessomething.Donella Meadows, Thinking in Systems Tim Sheiner, all rights reserved
  • 3. Show me a picture Tim Sheiner, all rights reserved
  • 4. Tim Sheiner, all rights reserved
  • 5. Tim Sheiner, all rights reserved
  • 6. Concept Structure Dynamics Behavior Tim Sheiner, all rights reserved
  • 7. Visualizing System Behavior Tim Sheiner, all rights reserved
  • 8. Graphs Most standardized system visual Used to present recorded data Taught in schools, used (and abused) by large number of disciplines Lots of software tools available for drawing these Several roughly synonymous names graph chart plot Abstracted, non-representational view Many types: line, bar, dot, spider, etc. All based on cartesian system (x vs y) Tim Sheiner, all rights reserved
  • 9. Line Graph Conventions axis Plot of y=x title 5 y (units)dependent variable axis 0 7 Origin x (units) independent variable Tim Sheiner, all rights reserved
  • 10. Complex Example This is actually 3 graphs displayed on top of each other: 2 line charts and 1 bar2 y-axes chart key Tim Sheiner, all rights reserved
  • 11. Independent Variable not always Time In drug development an important relationship is the response (dependent variable) or outcome that occurs for a given dose (independent variable) of a drug Dose vs Response Tim Sheiner, all rights reserved
  • 12. Simple plots are never true best fit This graph actually displays a great recorded value deal of qualifying information uncertainty Tim Sheiner, all rights reserved
  • 13. System response is probabilistic Probable Response at Dose log10-4 Progesterone (M) 50 40 % Inhibition 30 Tim Sheiner, all rights reserved
  • 14. Visualizing System Dynamics Tim Sheiner, all rights reserved
  • 15. Flow Diagrams Represent system dynamics in a static form Some standardized conventions standard generic flow chart conventions detailed standards for engineering flow disciplines like electronics attempts at standardization for systems theory Range from representational to schematic Tim Sheiner, all rights reserved
  • 16. Generic Flow Chart Conventions Start A Process Step 1 Process Step 2 Process Step 2 No Decision End Yes A Ive run out of space, find a similar symbol elsewhere in drawing to continue flow Tim Sheiner, all rights reserved
  • 17. Example of Electronics Conventions Tim Sheiner, all rights reserved
  • 18. Heating Dynamics Representationally Decision Signal Heat Tim Sheiner, all rights reserved
  • 19. Heating Dynamics as Stocks & Flows An existing standard for representing flow in classical system thinking literature. Difficult to parse? Tim Sheiner, all rights reserved
  • 20. Heating Dynamics as Flow Schematic Feedback: Classic Example Thermostat regulating room temperature (via a heater) Desired temperature e.g. 68 . . is indicated by adjusting the . Alternative temperature control lever external electrical source . . . sends current to. . . which in turn moves the bi-metal coil; increasing the desired temperature