1 Subjects: “...observation...”

2 Subjects: “...concerns...”

3 Subjects: “...sliding mode observer...”

4 Subjects: “...sliding mode observer...”

5 Subjects: “...sliding mode observer...”

6 “... benefits from vast amounts of spatial data as well as people able to provide observations of geographic...”

7 “... to the utopian desire for environmental sustainability and the deviations from this scene observed in the real...”

8 “..., the issue of unequal access to care has become a shared concern in Europe, particularly socio-spatial...”