The phrase "a challenging analysis of" is correct and usable in written English.
It can be used when discussing a complex or difficult examination of a particular subject or topic.
Example: "The paper presents a challenging analysis of the economic impacts of climate change on developing countries."
Alternatives: "a difficult examination of" or "a rigorous assessment of".
Patent analysis, although useful in forecasting technology development trends, has posed a challenging analysis task since the volume and diversity of new patent applications has surpassed the ability of regular firms and research teams to process and identify relevant information.
Third, lack of intervention considering timing and number of follow up visits in accordance with the observational nature caused relatively limited follow-up data and the frequency of patient visits to be not uniform with considerable loss to follow up rate challenging analysis of sleep and mood variables.
Robert Putnam, the Harvard professor renowned for his challenging analysis of social trends, lectured Thursday night at Washington's Kennedy Center to an audience that included two Catholic cardinals and a motley group of very religious and distinctly non-religious people.
RPPA can also be used for the challenging analysis of small numbers of cells of human biopsies (Paweletz et al, 2001; Agari et al, 2012) and samples from formalin-fixed, paraffin-embedded tissue (Wolff et al, 2011a).
A more challenging analysis is that of sequential rejuvenations, for which there is no periodic interval for which the overall system state is reset, even though the instants of rejuvenation are periodic.
This is not a particularly challenging analysis, although nevertheless important.
Additionally, analyzing external data is more challenging than analysis of results of a carefully designed experiment or trial, because one has no impact on how and what type of information was collected.
The study of the maps μ↦F is a challenging problem of functional analysis.
For these reasons, the parameter estimation problem is still a bottleneck and a challenging task of computational analysis of systems biology [ 1, 11].
Analysis of images of arrays on wet paper was more challenging than analysis of standard rigid arrays (e.g. DNA arrays).
