Sentence examples for and difficult to determine from inspiring English sources

In general, the effective stiffness is a complex parameter and difficult to determine.

Accurate information on catchment level sediment budgets is rare and difficult to determine.

The distributions of some of random variables are quite complicated and difficult to determine using ordinary statistical models.

Conditions for heat transport from the furnace to the sensor are variable and difficult to determine; therefore, the accurate identification of the atmosphere temperature is not possible.

Furthermore, since the coefficients of the GCE are unknown and difficult to determine, we present the minimum risk window estimator (MRWE) as an alternative estimator.

However, due to the complexities of wound healing, and different effects of EGF on the various processes that constitute wound healing, an optimal EGF therapeutic regimen is unknown and difficult to determine experimentally.

It still depends on the independent noise and the signal and is difficult to determine in experiments.

In many reported cases patients have used other medications, making cause and effect difficult to determine.

Many no doubt will play around with publication dates, which admittedly are more and more difficult to determine in an age of virtual publication.

With every upturn being followed by deeper falls, investors are increasingly wary as it becomes more and more difficult to determine what might happen next.

In HDSS, maternal mortality is rare and, thus, difficult to determine in small sample sizes (27).