#koolitus #overalleesti (at Overall Eesti AS)
Ma tean ta tegelt ootab mind. Varsti varsti kannata veel veits (at Overall Eesti AS)
Hello, dear (at Overall Eesti AS)
Oli juba ju
Reading Emotional Design
Toimetatud (roogitud) lugemist
Assignment 2: Complete map.
Would have been useful to participate on all lectures. It is not so healthy to take all this in within very limited time period.
Assignment 2: State Transition Diagrams, Petri nets
So far I’ve been filling the concept map while reading the text. This time will give a try to first take some notes, then build a map on the basis of these notes.
Here we go.
First, was the task? According to our course blog to
explain, using a concept map, how state transition diagrams and Petri nets can be used in human-computer interaction.
Strongly suggested readings for these tasks were:
How STD and Petri nets can be used to make computer more usable?
Just Enough Structured Analysis, Chapter 13: State-Transition Diagrams by Ed Yourdon
Extending State Transition Diagrams for the Specification of Human-Computer Interaction
by Anthony I. Wasserman (1985)
Notes on Chapter 13:
state-transition diagrams - modeling tool - for describing the required behaviour of real-time-systems + the human interface portion of many on-line systems
highlights time-dependent behaviour of a system. What kind of a system? Real time systems dealing with high-speed external sources of data. State represents some behaviour of the system that is observable and that lasts for some finite period of time.
Dozens of different states.
A system in order to change from one state to another has to have conditions that cause that change. A condition is an event detected by a system. The event is seen as signal, interrupt, or arrival of a packet of data. An input? So it sort of sets a goal to achieve? It has to take the actions, when it changes state.
STD used conjointly with DFD (dataflow diagram) to show sequence of activities within the system.
Notes on Wasserman very brief.
User Software Engineering general method for the specification of HCI
USE transition diagrams provide effective methods and tools for the engineering of Interactive systems.
Petri net also known as Place/transition net or P/T net is mathematical modeling language. Petri nets were invented in 1939 by Carl Adam Petri at age 13
for process analysis
Notes on process of mapping itself. If process of constructing a concept map is interrupted for couple of hours, it is easier to get back on track than with notes in written form. I struggled to connect notions.
Assignment 2: Interface Efficiency, KLM, GOMS