The study of the past may reveal truths, he allowed, but those truths are contingent, incomplete, and valid only "for the time being".
For standardized codes, such as ICD-9 and Current Procedural Terminology codes, the codes are ascertained to be valid for the time period the patient record is reported.
The assumption of constant rock temperature is valid for the time scale of (w^2/alpha), where w is the fracture aperture and (alpha) is the thermal diffusivity of the rock.
For our study, a prospective study design would also have limitations because HRQOL may change between the time of data capture and fracture and thus may no longer be valid for the time of fracture.
And a cohort study would also have limitations because QOL may change between the time of data capture and fracture, and thus may no longer be valid for the time of fracture.
Second, the results are only valid for the time span up to 2014.
The first advantage from this scheme is that the results concerning the power and the expected time are valid for any test statistic.
Results demonstrated that the proposed method was valid for the time-locked and phase-locked feature extraction and both the evoked response and phase reset contributed to the genesis of the P300 signal.
\end{aligned}$$\end{document} Thus, the equilibrium equation is approximately valid for the time-average pressure and stretch.
We continue to believe the investment themes we've suggested for some time are still valid in the longer run, but the current turmoil may be the prelude to major market disruptions in the meanwhile.
