Sisi's time in Pennsylvania is controversial because of an ambiguous 11-page essay (pdf) he wrote there.
However, sentence boundary identification is challenging because punctuation marks are often ambiguous [20].
Yet, the understanding of the current, technology-driven changes in value creation [40, 41, 42] is still rather ambiguous [43].
Generally, few studies have investigated associations between different headache types and personality, and the results have been ambiguous [48].
Note further that the categorization of incidents and identification of victims, in particular, may sometimes be ambiguous [29].
Although blue wavelength fundus autofluorescence (FAF) can help discriminate between active and atrophic lesions, findings can sometimes be ambiguous [5].
The objects of sensory perception are collectively referred to as becoming since they are changing and ambiguous (508d).
However, the substitutional doping mechanism and the electronic structure evolution of a metal into the aluminosilicates are still ambiguous [32, 33].
Although most studies describe surface roughness rather than wettability as the dominant factor for bacterial adhesion, the data on this matter is somewhat ambiguous [9 11, 20, 32 37].
Ozonation is one of the techniques suggested for tertiary treatment to remove micropollutants from wastewater [1, 4, 5], but the ecotoxicological consequences of wastewater ozonation are ambiguous [6].
With two eyes (and a normal binocular visual system) (Sacks, 2006), the twigs are seen as a much less ambiguous 3D structure.
