For most faculties, the difficulty with evaluation lies in developing appropriate and useful questions.
Due to the present difficulties with economic evaluation, geological evaluation remains the primary method used during the target selection phase (Zhao and Zhang 1999; Wang et al. 2009; Liu et al. 2001; Chen et al. 2012b; Hou et al. 2014).
There are several difficulties associated with evaluation of the Widal test.
However, since one subject had difficulties with the evaluation, which was apparent by observing that the anchor was consistently not found (receiving a score greater than 50 in two instances), the scores from this subject were removed from the analysis.
One of the difficulties with this evaluation is that reproductive boundaries between morphologically defined coral species are often permeable, and morphology can be wildly variable.
Moreover, besides the difficulties with accurate preoperative evaluation of tumor extent, there are also difficulties with proper assessment of tumor grade and agressiveness [ 9].
Difficulties with postnatal toxicity evaluations include divergent differentiation of structure, function and physiology across species, lack of understanding of species differences in functional ontogeny, and lack of common end points and milestones across species.
One difficulty with these evaluations of the impact of taxon sampling on divergence time estimates is that they were not specifically designed to test this issue and thus are only marginal assessments.
He used several case studies and examples to conclude that UIC code 406 is a good methodology for evaluating the main corridor capacity, but it may encounter difficulties with node (station) capacity evaluation.
These were problems with energy and drive function, emotional functions and sensation of pain; difficulties with remunerative employment; general evaluations of mental health and physical health, social functioning and global disability evaluations.
