Numerous studies substantiate the difficulties faced by women entrepreneurs in accessing finances (Hisrich and Brush, 1984; Carter and Marlow, 2007; Anshu, 2012) including the difficulties to track and approach banks for lending services (Hisrich and Brush, 1984).
Studies comparing the performance of philopatric birds with that of long-distance dispersers hardly exist, mainly because of the difficulties to track birds [20].
In addition, dogs seem to have especial difficulties to track the reward when both containers crossed their path during displacement.
It was found that the proposed method tracked better than the three-point-weighting method, and it was capable of improving the deficiency of perturbation and observation method that has difficulty to track from the open-circuit voltage (on the right hand side of the P V curve) as well as enhancing the precision of the three-point-weighting method in the case of zero-weight.
Recently, tremendous progress has been achieved in the genetic characterization of rare mitochondrial disorders, yet their management remains challenging because of the difficulty to track their progression and the absence of proven therapies (DiMauro and Mancuso, 2007; Orsucci et al., 2009; Pfeffer et al., 2013; Schapira, 2012).
One of the difficulties is to track the complicated topological deformations of the interfaces between different phases.
Railway is envisaged as the transportation mode of the future, but in spite of its advantages, its development is not exempt from technical difficulties that lead to track deterioration.
As maternal deaths are relatively rare events, in order to overcome the difficulty in estimation and to track quality of service delivery, examining near-miss events has the potential to complement the maternal death reviews [ 5].
In addition, daily diaries have been used to track sleep difficulty [ 11], daytime sleepiness and tiredness, difficulty maintaining sleep, early morning awakenings [ 12], sleep disturbance [ 13- 15], and sleep symptoms [ 16].
The fact that they were able to travel for many days across hundreds of miles of desert through Niger and Libya to reach their target without being stopped, illustrates the severe difficulties facing anyone now seeking to track them down.
Butterflies seemed to cause him particular difficulty, as it's tough to track how many of them are flying around.
