hci in multimedia learning 2012
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Apa HCI itu?
HCI = Human Computer Interaction
(IMK = Interaksi Manusia Komputer)
Peran HCI adalah untuk meningkatkan
kualitas interaksi antara manusia dan sistem
komputer
Terutama permasalahan yg dihadapi user
ketika berinteraksi dg multiple channels ofcommunication
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Pertimbangan Praktis HCI dari
Sistem Multimedia
1. User Types and capabilities
2. Mental Models
3. Memory
4. Navigation
5. Training
6. Ergonomics & environment
7. Prototyping
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1: User types
Four main types of user:
Novice = pemula
Casual = cukupan
Experienced = berpengalaman
Professional = ahli
The above will be included in one of the
following:Discretionary (flexible=bebas memilih)
Non-Discretionary (wajib = tidak bisa memilih)
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2: Mental Models
Model mental adalah representasi konseptual dari
seseorang guna memahami lingkungan (sistem).
Contoh: bayangkan cara kerja telepon, cara
gunakan solder. Model mental berisi model structural dan
functional
how it works
knowing how to use it Model mental akan berkembang dengan
sendirinya melalui interaksi (meski tidak akurat).
Perlu desain interface dan feedback yg baik untuk
membentuk model mental yang akurat.
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Gunakan Simbol (Metaphors)
Meaningless information is more difficult to
remembergunakan contoh kehidupan
sehari-hari
Concepts are more difficult than objects toremembergunakan visual, animation
Analogies, metaphors and icons are therefore
better for to help explain the workings of asystem
Meaning is taken more quickly and is easier to
maintain in memory
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4: Navigation
Problems of spatial disorientation
Assessing much information
Distraction from goal directives
Complexity in the interface
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Solutions to assist navigation
Guided Tours
Useful for learning specific topic
Provide different tours for specialist interests
Can leave tour at any point and then return later
History Lists
Text and Graphics
Use graphical miniatures rather than text namesKeep cache of last few nodes permanently visible
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Solutions to assist navigation
Book marks
smaller and more manageable than history lists
depends on user to specify
need to be able to remove as well as add
Backtrack
not always consistent
should always be available should always be activated in same way
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Solutions to assist navigation
Overview Diagrams
Global and local overview
Meta-navigation using viewports over parts of
structureDifferent overviews
Nutrition structured by vitamins, food source, disease
Landmark nodes - Home, Topic menus
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5: Training
Usability criteria:
how long does it take to learn
the speed of performance
what is the rate of errors
how easy is the recovery
subjective satisfaction
how much is remembered how much is unused
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6: Ergonomics & environment
Health and safety requirements
Task requirements
Visual display
Keyboard requirements
Workstation layout and posture
Lighting
Room climateNoise
Personal space
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7: Prototyping
Interactive product design and construction is
labour and time intensive
So you cannot afford many mistakes
Prototyping as an iterative approach can be
useful in managing blocks of work
User centred design approach
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User Feedback & Design
Early or Late?
Early user feedback gives you time to incorporate
changes
Late user feedback is more precise, since theproduct is nearly ready
Analytic or informal?
Analysis of user feedback may be necessary
Informal feedback may be all that is required
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Design rules in use
Desain rule ini merupakan: principles for user
interface design sebagaimana digunakan di
industry
The information is split into Input/Output
Dialogue
Conceptual modelGeneral
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Dialogue
Use of menus and prompts
Context-dependent messages
User control
Natural response time
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General
Easy to use, "user friendly"
Make it as simple as possible (but no simpler)
Follow standards wherever applicable
The key is to understand the users needs and
the users types of conceptual models
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Summary
Sangatlah penting dalam pengembangan
pembelajaran berbasis multimedia (PBM)
untuk memperhatikan HCI guna meningkatan
kualitas interaksi antara pengguna danprogram.
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Diskusi
Diskusikan bagaimana 8 prinsip multimedia
pembelajaran oleh Mayer bila
diimplementasikan dengan memperhatikan
HCI ini.
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