The phrase "a valid system of" is correct and usable in written English.
You can use it when discussing the legitimacy or effectiveness of a particular system, often in contexts like science, technology, or philosophy.
Example: "In order to ensure accurate results, we must establish a valid system of measurement."
Alternatives: "an acceptable framework for" or "a legitimate method of".
If a valid system for neutralization of chlorhexidine was used in suspension tests, 4% chlorhexidine revealed only little activity within 5 min against different strains of vancomycin-susceptible and-resistant Enterococcus spp. [ 10].
The POSSUM system was a valid system to evaluate the risk adjusted comparison of surgical outcomes in gastric cancer surgery [ 18, 19].
Emphasizing that history is dependent upon human value judgments of past experiences that cannot be verified by direct perception, he sought to objectify history through the use of a universally valid system of historical values.
While Rickert does not believe that significant progress in the historical sciences of culture can be expected from the development of psychology, he believes that a philosophy of history grounded in an unconditionally valid system of values (Rickert 1924a, 118) would be of paramount importance.
Here, we assume that an adversary gains access to the biohash vector of a valid system user and the corresponding secret key and estimates a new real-valued feature vector from the binary biohash in order to authenticate to the system.
In order to invert the quantization process, an adversary who possesses the biohash (b) of a valid system user and corresponding random projection matrix (R) uses an arbitrary biometric feature vector x f to simulate the biometric hashing procedure through random projection and obtain an intermediate vector z f =R x f.
Considering that, the use of marginal donors can be a valid system in order to supply the lack of organs.
We have then used these utilities to generate a context-appropriate and valid system of scoring policymakers' engagement with research in the development of policy.
We live, we are told, in a multicultural society, and all cultures, it is supposed, have their own equally valid system of morality.
For example, a lord in the 18th century who treated his maid according to the accepted norms of that time for example, by treating her as if she was invisible may not have (intentionally) disrespected her with regard to the socially valid system of norms and values.
