“…However, results of key indicators like participation in learning activities often vary remarkably between different data sources. Stating that these differences are due to varying concepts and methods is not enough. …”

“…Discretion over these resources varies considerably, and so does sub-central governments’ power to shape public service delivery. …”

“…The coverage and classification of special R&D institutes continues to vary between countries. The coverage and quality of the data is clearly improving but considerable further progress will be needed before the R&D statistics for service industries can be used for integrated economic studies. …”

“…The composition of milk varies among different species, and milk quality is affected by several factors, i.e., season, climate, feeding management, and stage of lactation, as well as heat-treatments and technological processes. …”

“…This work highlights the many uses of these reactors, which have very different designs, use highly varied quantities of radioactive substances with varying levels of risk for safety and radiation protection, and which - in many cases because they are old or have been shut down - require appropriate measures to control the ageing or obsolescence of some of their equipment, as well as, on an organisational and human level, to ensure that they continue to be operated safely. …”

“…The results of that code, formerly shown separately, also appear in line and in this way the user can vary the parameters of the specific problem and explore immediately how the solutions vary in response. …”