Ergonomics of human-system interaction - Usability: Definitions and concepts1 Scope This document provides a framework for understanding the concept of usability and applying it to situations where people use interactive systems, and other types of systems (including built environments), and products (including industrial and consumer products) and services (including technical and personal services). NOTE In this document, the phrase object of interest refers to the system, product or service for which usability is being

For shared flues

including both developers and end-users of applications that handle metadata for resources of any kind

and is relevant for the assessment of the economic performance of new buildings over their life cycle as well as existing buildings over their remaining service life and end of life stage

BS 7669-3 provides guidance on the installation and erection procedures for vehicle safety fences

This standard applies for fire-fighting centrifugal pumps with priming devices for use under ambient temperatures between -15 °C and 40 °C

Code of practice for thermal insulation of pipework and equipment in the temperature range of -100 degrees C to +870 degrees C

The equipment assembly may also include circuits for displaying readings

installers and testers of anchors

The sweeper’s ability to remove and capture particulate matter and coarse size fractions is assessed using procedures and equipment to determine the amount of a test material (consisting of particulate matter and coarser size fractions) the sweeper is able to remove from a test surface during a controlled test run

4‑Dinitrotoluene 2

or the water content

or items of information