Feature: Measurement Standards, Reference Materials and Cryogenics to Support Measurement Reliability

Reference Sheet for International Measurement Standards

Performance criteria for reference measurement procedures and reference materials.

The concept of metrological traceability of measurement results to property values assigned to measurement standards of higher metrological order or to the International System of Units (SI) through sequential calibrations, using reference materials and reference measurement procedures, plays a key role in ensuring that end user measurement procedures perform at an acceptable level in the clini...

Measurements and Measurement Standards

Measurement and standard reference materials in clinical chemistry.

The concepts of the measurement system based upon four parameters-length (meter), mass (kilogram), time (second), and temperature (kelvin) -are developed. The proper daily operation of an analytic laboratory depends upon these basic measurements and others derived from them, eg., the liter. An additional component of chemical measurement which directly influences accuracy is the purity of the s...

Susceptibility and Measurement Reliability

In this chapter, we report the concept and results of an empirical study that explored the effects of immersion and pictorial realism on the sense of presence in a virtual environment (VE). The VE used was similar to a typical industrial application. Seventy-seven participants each experienced one of four settings with varied combinations of immersion and pictorial realism, displayed in a proje...