The phrase "a well defined area" is correct and usable in written English.
It can be used when describing a specific, clearly outlined space or region, often in contexts like geography, planning, or research.
Example: "The research focused on a well defined area of the forest that had been affected by the recent wildfire."
Alternatives: "a clearly delineated area" or "a precisely specified area."
A primary requirement is evidence of a widely recognized and significant impact on a well defined area of investigation.
The quality and the impact factor of the journals and the impact of the papers within a well defined area of investigation will be considered.
Each of these groups has a well defined area.
MammoSite (Proxima Therapeutics, Alpharetta, GA, USA) is a newly developed device for brachytherapy, which delivers an accelerated dose of radiation to a well defined area of the breast.
24 25 Briefly, before participants were recruited, water samples and their geographical coordinates were collected for 5966 contiguous wells in a well defined area of 25 km.
Within a well defined area (municipality of Velsen) it serves a population of around 62,000 people with a total of 25 GPs and eight nurses.
This is a very well defined area in the delay-Doppler plane that is given by the sequential tracking process of the particle filter as explained in Section "IP-LPF algorithm".
By the afternoon of August 30 the system continued to show strong convection and had developed a broad but well defined area of low to mid level cyclonic turning.
The optimal FPG that was predictive of IGT was less well defined (area under the curve, 0.54).
This well defined area consists of 4 parallel streets each less than 400 meters long restricted by law (area and time period).
Jacobson and Zuker [ 20] later used dot plots to predict well defined areas in a viral genome, suggesting that the amount of cluttering in dot plots reflect the impossibility of accurate structure predictions.
