In practice, it has been usually difficult to locate them.

Although the List currently includes numbers next to the names, those numbers change every time a new entry is made because the new name is inserted based upon alphabetical order.

It had been difficult to determine the exact number of displaced people because of the lack of a proper registration system and the unwillingness of displaced persons to come forward out of fear of reprisal and other reasons.

In the murky world of the Internet, attackers are difficult to identify.

It is difficult to quantify the precise impact of ISIS' efforts to promote its mission and recruit new members.

Most of the agreements are still new, and it would be difficult to identify areas that need improvement.

However, it was difficult to determine the exact molecular weight and number of amino acids in a protein.

But Yemen s population is close to that of Saudi Arabia, and its border is very hard to control.

The multidisciplinary nature of nuclear medicine makes it difficult for medical historians to determine the birthdate of nuclear medicine.

Such meetings aimed at identifying the best solutions to leave behind the difficult situation currently experienced by the Kingdom.

The number of segments is determined from the preceding Page Segments field.

It is difficult to judge who is right, and there are important experts on both sides of the debate.

Measuring language usage It is very difficult to determine what are the most popular of modern programming languages.

A number of serious weaknesses in the cipher have been identified.

With regard to emissions reductions, it was difficult to identify potential solutions owing to the absence of information on specific operations.

A number of caves of indeterminate type are in the vicinity of the mountain.

Limits on the number of centrifuges and where they could be housed might also be necessary.

The number of troops is specified by decree of the President of Russia.

The truth is that it is hard to identify any correlation between regulatory structure and success in heading off or responding to the financial crisis.

It can be difficult to construct a path to nuclear disarmament if we do not know more precisely what will be the end goal.

It is difficult to put an exact figure to women's NGOs, because even the Ministry of Planning, under whose jurisdiction they fall, does not know precisely how many there are of them.

The report noted that it was difficult to determine expected outputs for academic activities, and even more so to link such outputs with resources utilized (inputs).

Given this situation, it is very difficult to determine what goes on at the airports in Somalia, in particular with regard to the shipment of arms and weapons.

A number of anticipatory and reactive adaptations have been identified in key sectors.

The number of possible aggregations is determined by every possible combination of dimension granularities.

It may be difficult to accurately determine the depth of a burn on a single examination and repeated examinations over a few days may be necessary.

This respect is expressed clearly in the Ancient Egyptian theology and morality, but it is difficult to determine the extent of its application in the daily life of Egyptians.

It is difficult to determine from a statistical point of view, therefore, whether fraud involving identity theft is subsumed in fraud statistics generally.

It was also difficult to distinguish a minority group, as the population comprised a good number of Turks and Kurds.

If the subdevice is not specified, or if subdevice number 1 is specified, then any available subdevice is used.

Young children have difficult determining the location of leg pain, thus in this population, knee pain equals hip pain .

An elimination diet may be successful if a limited number of food allergies are identified.

Furthermore, the Group noted that, in a number of developing countries, it was difficult to participate in the recruitment process by electronic means.

Many labor movement campaigns have to do with limiting hours in the work place.

In such a situation, while it may enhance the competitiveness of the firm as such, it is difficult a priori to determine the impact on the home economy.

There are a number of blood tests available that try to determine the degree of hepatic fibrosis and alleviate the need for biopsy.

Options for changes in the number and weight of the factors for equitable geographical distribution have been undertaken in a number of studies by the Secretariat at the request of the General Assembly.

A number of important precedents has been set of resolving specific situations in rough diamond trade.

Given the short time since the practice was suspended, covering only two sessional periods, it is difficult to determine a trend and draw conclusions on the direct financial impact.

Halving the number of people living in poverty by 2015 would therefore be a difficult task.

Most measurements are from birds raised in captivity, so determining if there are any major differences in measurements between wild and captive condors is difficult.

Individuals within organizations Because many different individuals in large organizations contribute in many ways to the decisions and policies, it is difficult even in principle to identify who should be accountable for the results.

Although it might be desirable to investigate the possibility of identifying these two different types of uses empirically, it is difficult to think of a methodology that would allow such a distinction to be made in a systematic way.

That's hard to say.

When you combine these actions with those of members of the police force carrying out killings outside their own code of conduct it is often very difficult to identify exactly who is responsible.