Due to the heterogeneous nature of these aggregates, experimental techniques such as X-ray crystallography and NMR have had difficulty characterizing their structures.
SECSTR (Fodje and Al-Karadaghi, 2002) is another variant which improves the detection and assignment of π-helices which both DSSP and STRIDE have difficulty characterizing (Martin et al., 2005).
In fact, Rourke (1988) suggested that specific poor mathematical achievement can be related to so-called non-verbal learning difficulties characterized by poor visuo-spatial organization skill.
To evaluate the application of NPPV, using the Bilevel mode, in patients with IMV weaning difficulties, characterized by spontaneous ventilation failure during a spontaneous breathing trial (SBT).
The apraxia group consisted of 9 males and 5 females, aged 3.9 6.6 years (M = 4.5, SD = 0.8) with confirmed moderate to severe speech difficulties, characterized by focal motor planning deficits (apraxia), in the absence of known neurological disorders, neuromuscular deficits (dysarthria), or hearing problems.
Another limitation of our study is that we used a broad definition of SCALE-UP 'users' because almost all faculty members make modifications and have difficulties characterizing their use.
The ORIG criteria described by Rothan-Tondeur and colleagues [ 38] are specifically adapted for use in the nursing homes, taking into account the diagnostic difficulties characterizing this clinical setting.
Item difficulty was characterized by calculating the proportion of test takers who achieved a passing score for each item.
Increasing levels of difficulty were characterized by an increasing size of the stimulus set and progression from single to multiple choice reactions.
Increasing levels of difficulty are characterized for example by overlap between appointments, the difference between fixed and variable appointments as well as appointments, which cannot be included in the solution.
