The phrase "theoretical instrument" is correct and usable in written English.
It can be used to refer to a concept, model, or tool that is based on theory rather than concrete evidence. Example: "The theoretical instrument of Maslow's hierarchy of needs is often used to understand human motivation and behavior."
It discusses the regulatory issues, as they arise from the liberalization of the network industries, and presents the concepts and theoretical instruments with respect to electricity and gas regulation in Europe.
The dissertation prospectus is specific to each discipline, but in its broadest outline it is a document that explains in detail the thesis project, the critical and theoretical instruments used to approach it, the existing scholarship on the subject, and the original contribution that the proposed project entails.
Rather than aiming to develop instruments which assess all of the five steps of EBP, it may be that instruments are designed for specific purposes, such as the evaluation of EBP theoretical courses (instrument to assess cognitive skills), or the evaluation of EBP in clinical practice (instruments to assess performance based skills and application).
Particle size distributions obtained from MEAS measurements compare well with those obtained using a scanning mobility particle sizer (SMPS; TSI 3936), validating theoretical calculations of instrument transfer functions.
The five related instruments were reviewed on definitions of constructs and sub-constructs, designs of instruments, theoretical bases, samples, validity and reliability processes.
For this purpose, we used theoretical models and instruments that have been contrasted in prior literature.
He claims that normal science can succeed in making progress only if there is a strong commitment by the relevant scientific community to their shared theoretical beliefs, values, instruments and techniques, and even metaphysics.
Subsequently, part 2 discusses the theoretical area and instruments applied to answer the problem at hand, which are founded in the nature of service quality and customer satisfaction, and rise to a research model.
In fact, the analysis of cultural codes that the Pictures Artists inherited from Conceptual Art was taken up by a new generation who wielded them ever more potently as theoretical and political instruments of dissent.
Newton's pessimism was unfounded: although his calculations had suggested a deviation of less than 2 minutes of arc (for an idealised three-mile high mountain), this angle, though very slight, was within the theoretical capability of instruments of his day.
