Does the computation for diminishing value depreciation shown in http://www.ird.govt.nz/tool-for-business/examples/example-diminishing-value.html
apply to Australia?

Base value × (days held/365) × (200%/asset’s effective life)

this is the method as prescribed by the ATO. the example you have seems to follow the same accounting principal. the gibberish about 200% / effective life is there to give you the depreciation rate:

eg
effective life for a laptop computer per ATO = 3 yrs

200% / 3 years = 66.67% depreciation rate.

you can self-assess the effective life if you want but its easier to use the ATO effective life tables.

have fun with it!!!

bc