Dario Hidalgo, a transport expert with EMBARQ in Bogotá who has evaluated Delhi's BRT, says typical obstacles include a difficulty in establishing bus lanes, jurisdictional overlaps between city agencies, competing fleets of privately owned "incumbent" bus services, and a lack of expertise among planning agencies charged with implementing high-speed service and infrastructure.
18 Limitations of prospective studies include a difficulty in controlling for bias and a loss to follow-up.
Obstacles to complex trials include a difficulty to make experimental practice changes, ideological resistance to or ignorance of trials, unknown levels of generalizability, and costs.
If the constellation of the manic depressive includes a difficulty in integrating a part of his or her history, society's neglect of this dimension can only make things worse.
But the current open-ended system includes a difficulty score that accounts for more than one-third of the final tally – and Biles' "d-score" for the all-around was 2.7 points greater than any of her competitors (compared to 0.6 higher in Rio).
Challenges noted during the initial studies included (a) difficulty in achieving optimum dilution and residence time while sustaining isokinetic sampling for high flue gas velocities; (b) inaccuracies in measurement and control of sampling system flow rates to maintain a balanced flow system; and (c) particle depositions in several system components.
The script also includes a difficulty on the part of the detectives in coping and dealing this new form of cyber-crime and differentiating the truth from the hoax; Leight said, "Their biggest frustration is trying to understand what's real and what isn't.
The two-parameter logistic model includes a difficulty parameter and discrimination parameter for each item.
We then adopted those items which included a difficulty level of 0 and a discrimination power of 2 or higher.
Exposure to trauma in childhood predicts life-long problems in social relationships, including a difficulty trusting others, poor-quality relationships, and an elevated risk of re-victimization and developing a variety of chronic physical health problems [ 28, 29].
