Therefore, Eq. (13) can be rewritten as Using Eq. (14) in Eq. (5), The reverse order of the multiplication in Eq. (15) is equal to a change of reference from (x,y,z) to (x,-y,-z), changing the extraordinary axis from θ in the old coordinate to θ in the new coordinate and switching the input/output plane as shown in Fig. 1.c relative to Fig. 1.a).
The orthogonality of the basis is preserved by performing a change of reference in the time.
In this description nonlinearity of the problem derives essentially from the change of reference, from the global fixed frame to the local one, the strain energy being governed by their relative rotations.
We should note that, our term of 'an increase of air pollen counts' means a change of pollen counts from the reference level (0 pollen) to a higher level (eg, 1 10 pollen grains), which does not indicate any temporal change as which pollen level comes first.
It is recognized that transformations that decouple forces and linear strains from moments and angular strains cannot be described as a mere change of reference point.
Students change their frame of reference from dependent students who expect to know the right answer, to semi-autonomous novice clinicians who can accept clinical uncertainty and work without being distressed by their limitations [ 37].
These results are in line with the view of a progressive visuomotor transformation in the dorsal visual stream, that changes the frame of reference from the retinocentric one, typically used by the visual system, to the arm-centred one, typically used by the motor system.
Finally, in response to our pilot results, we have changed the time frame of reference from the original "past 7 days" to "past 2 weeks" at follow, so as to facilitate our samples' understanding on the items.
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The reference to Iran as an "Islamic Republic," and the direct statement about not threatening Iran, diplomats said, offered a first clear signal from the Obama administration that it would not pursue a change of government in Iran.
