Sentence examples for problem has appeared from inspiring English sources

Since this problem has appeared quite recently, there may be something that requires therapeutic help.

Meanwhile another problem has appeared on some of the new models: yellow discoloration under the screen.

All recalled vehicles must be repaired, regardless of whether a problem has appeared, and there is no time limit on the repair.

But in the past two years, another problem has appeared: China is struggling to mine enough coal to satisfy all the coal-fired plants.

Relatively little work on this problem has appeared in the literature, see, e.g., [27], [28].

Several solution concepts for multiobjective optimization problem have appeared in the literature viz.

Recently, some existence results for fractional boundary value problem have appeared in the literature (see, e.g., [15 17]).

Now a catalogue of problems has appeared over the past 18 months, which, from a forensic investigation of the building, appear to be the result of serious defects in design and construction.

A growing interest for using optimization techniques in railroad problems has appeared in the operation research literature (see, e.g., Brannlund et al. ([1998]) and Cordeau et al. ([1998])).

Urban problems have appeared.

The biggest problems have appeared in the biggest chains.