However, due to access restrictions, lack of regulations and the difficulty of data collection on private property, the impact of management practices and in particular pesticide use has seldom been assessed in private gardens.
Current officials at various federal agencies have said that they have had difficulty getting data on the performance of federal student loans.
National governments, health care facilities, and other stakeholders with fewer resources may have difficulty collecting data on intentional explosive incidents.
Yet, despite the primordial importance of these attitudes, the country teams had some difficulty obtaining data on this subject and dealing systematically with it in their knowledge aggregation exercises.
The researchers, in their article, noted some difficulties: Their analysis is based on data that was available, not on surveys or measurements they took.
Hence, the difficulty of evaluating capital flows based on data mostly from the 1990s and early 2000s.
FBI agents have had difficulty accessing data stored on the cellphone Mateen used during the massacre because it was damaged by water and blood, a law enforcement official said.
Jun. 15, 2016, 8 03 p.m. FBI agents reviewing Omar Mateen's electronic communications and call records have had difficulty accessing data stored on the cellphone he used during the Sunday massacre because it was damaged by water and blood, a law enforcement official said Wednesday.
The company dismissed quality problems as the cause of its difficulties because data on service complaints showed steady improvement during the period.
This was also the experience of the researchers in this study, who had difficulties obtaining data on former teachers from educational authorities.
