The police in Hong Kong said in a statement that they had arrested a 55-year-old man on charges of "using a false instrument" involving a commodities trading company.
He devised and used the 'noematachograph', an instrument involving a helically moving horizontal cylinder mounted with ebonite and brass disks, electrodes, and a tuning fork.
Trained interviewers used a computerized data collection instrument (involving a five-step recall process: quick list, forgotten foods prompt, time and occasion prompt, details prompt, and final probe), along with aids such as photos of different seafood species.
Mastering such instruments involves a significant learning curve, he said.
Likewise, the playing of African musical instruments involves a whole combination of body movements.
Some musicologists say that playing an instrument involves incorporating an object into thought and emotion, and that to listen to music is to enter into a larger cognitive system comprised of many objects and many people.
Construction of an MAU instrument involves two tasks: creating a descriptive system - a set of questions whose answers describe a person's health state - and devising a scoring formula, which combines and reduces the answers to a single number which seeks to measure utility.
Assessing the validity of an instrument involves confirming the instrument's capability of measuring what it is intended to measure [ 23].
Assessment of the psychometric properties of a new instrument involves testing the instrument for: (1) validity, (2) reliability, and (3) acceptability [ 26- 28].
Defining an equivalence margin for different language versions of a HRQoL instrument involves specifying the magnitude of difference in scores between versions that is clinically unimportant (i.e. that would not adversely influence the results of research which pooled data from these versions [ 18]).
