Sentence examples for difficult problems associated with from inspiring English sources

Petri-nets have proven to be a promising technique to solve many difficult problems associated with the modeling, formal analysis, design and coordination control of discrete event systems.

As a result, the number of frozen embryos accumulates constantly; the most difficult problems associated with a long duration of embryo cryopreservation are the increase of "unclaimed" embryos and the associated ethical, legal, and economic pressures.

In general, the most difficult problem associated with the recycling of any solid-waste material is finding applications and suitable markets.

The choice of model complexity, or the number of populations required to explain structure in a data set, is a difficult problem associated with the inference of population structure.

The amount of data required for resolution of difficult phylogenetic problems associated with short internodes, especially those deep in a tree can represent a particularly difficult challenge [ 5- 7] that often requires massive amounts of sequence data to resolve.

There are two approaches that can be taken to address the more difficult computing problems associated with larger computational dimensions.

Releasing large marine organisms captured on longline gear can often be difficult due to problems associated with the use of conventional line cutters.

However, comprehensive understanding of the effects of microgravity on biological systems is difficult due to technical problems associated with spaceflight experiments.

In the cases, where low yield of products were obtained, the steric effects of substituents attached on aryl group of boronic acids and some practical problems associated with difficult chromatographic purification are suggested to be the possible issues [36].

A spokesperson said: "We recognise that the existing legislative framework makes it difficult to resolve many of the problems associated with fly grazing.

Many GPs do feel involved in this stage, but they find the psychosocial problems associated with it quite difficult.