Sentence examples for many difficult problems from inspiring English sources

Many difficult problems may be attacked under this framework, which might lead to even greater advances".

The origin of the runes offers many difficult problems and has been hotly argued by scholars and others.

PAGE C4 Not a New Era Yet Though Slobodan Milosevic has been ousted in Serbia, many difficult problems remain in place in the Balkan region.

America has been facing many difficult problems, to some of which it has not yet found solutions.

In fact, there are many difficult problems to overcome in the design of medical information systems for efficient knowledge extraction.

Although key definitions are adopted by XML Schema, validating hierarchical key constraints over XML document faces many difficult problems.

These problems are interesting in applications and raise many difficult mathematical problems.

In recent years, these problems have received considerable attention and raised many difficult mathematical problems.

These problems with variable exponent are interesting in applications and raise many difficult mathematical problems.

The study of various mathematical problems with variable exponent are interesting in applications and raise many difficult mathematical problems.

The use of heat pumps in cold climates poses many difficult technological problems.