The phrase "qualitative increase" is correct and usable in written English.
It can be used when discussing improvements or enhancements in quality rather than quantity.
Example: "The new training program resulted in a qualitative increase in employee performance and satisfaction."
Alternatives: "improvement in quality" or "enhancement in quality."
The qualitative increase of the mean clusters size and the decrease of their surface density increasing the annealing time t and/or temperature T are evident.
Furthermore, there was no effect on locomotor function in healthy animals which received the composite hydrogel, although a qualitative increase in ED-1 staining was apparent.
The changes experienced during educational process, quantitative and qualitative increase in the numbers of faculties and departments, national organizations and international information and experience transfers have been evaluated with several dimensions.
The energy saved at every step of the digital manufacturing process, from reduction in materials used, to less energy expended in making the product, if applied across the global economy, adds up to a qualitative increase in energy efficiency beyond anything imaginable in the First and Second Industrial Revolutions.
Fig. 3C illustrates a qualitative increase in sarcolemmal-bound utrophin in the tibialis anterior (TA) and EDL muscles after repeat dosing with SMT C1100 following muscle sectioning.
During the ischaemia analysis, it was observed that the epoetin delta treatment caused a qualitative increase in lectin-positive vasculature that was completely distinct from the hyperfluorescent pre-retinal neovasculature.
25 Quantitative data in this study showed little change in children's self-perceptions, although parents/carers did report qualitative increases in children's confidence.
Qualitative increases in the levels of chanoclavine-I (2) were observed in response to growth at decreasing temperatures and may correspond to improved folding of the proteins responsible for the conversion of N-Me-DMAT (1) into chanoclavine-I (2; see Figure S2).
Increasing the exposure time to both air and oxygen plasma brought about quantitative rather than qualitative changes (increase in edge recession, growth of pits in diameter, depth and concentration).
The effect of varying either the replication degree (n) or intrusion tolerance threshold (f) alone has the same qualitative effect (increase versus decrease) in resilience as in reliability.
Triangulation of data by location, ethnographers and qualitative methods increased the trustworthiness of findings.
