Sentence examples for a quite challenging problem from inspiring English sources

How to apply particle filtering approach in controller design: the controller design for nonlinear non-Gaussian systems is a quite challenging problem.

The working principle of ML estimation method based on maximizing the established likelihood function and maximizing this function formed for the parameter estimation of a three-parameter (3-p) Weibull distribution is a quite challenging problem.

Filtering does not solve the problem of collaborative flooding of DoS attacks and it is a quite challenging task to block spoofing attacks with multiple source addresses.

While the autonomic design is being adopted to a multitude of specific problems, designing a new Internet deeply employing autonomic ideas is a quite challenging task.

The optimization problem of Eq. 1 is fully non-linear and its real-time solution is a quite challenging task.

On-line identification of degrading and pinching hysteretic systems is quite a challenging problem because of its complexity.

The design of secure remote user authentication schemes based on elliptic curve crypto-graphy (ECC) for mobile applications is still quite a challenging problem, though many schemes have been published lately.

It can be quite a challenging problem for struggling web designers, but also for those who are more experienced, because it can be very easy to make a mistake here.

This is an interesting but may be a challenging problem.

Therefore, identifying an object with features is a challenging problem.

Lurking behind the spectre of population growth lies a more challenging problem: economic growth.